minor edit, and adding to the end

.gitignore

@@ -2,5 +2,3 @@
 .DS_Store
 output
 __pycache__
-.ipynb_checkpoints
-

README.md

@@ -1,90 +1,36 @@
-# Evilnkode Project
+# Evil nKode
 
-This README provides instructions for setting up and running the `evilnkode` project using Conda, activating the environment, and executing the provided CLI scripts. It also covers how to access help for command-line options.
+Simulated nKode Cracker
 
-## Prerequisites
+## Installation
 
-- **Conda**: Ensure you have Conda installed (Miniconda or Anaconda). Download from [conda.io](https://conda.io).
+- Python version 3.10 or greater is required
+- Install anaconda (or your preferred tool for environment management)
 
-## Setting Up the Environment
-
-To set up the project environment using the provided `environment.yaml` file, follow these steps:
-
-1. **Install the environment**:
-   - Ensure you are in the project root directory where `environment.yaml` is located.
-   - Run the following command to create the `evilnkode` environment:
+### Using conda
 ```bash
-     conda env create -f environment.yaml
+conda env create -f environment.yml
+conda activate pynkode
 ```
-   - This will install all dependencies specified in `environment.yaml`.
 
-## Activating the Environment
-
-To activate the `evilnkode` environment, run:
+## Starting a Jupyter Notebook
 
+### Option 1: Using classic Jupyter Notebook
 ```bash
-conda activate evilnkode
+# Ensure your environment is activated
+# For conda: conda activate pynkode
+# For pyenv: (should be automatic if in the directory)
+
+# Start the Jupyter Notebook server
+jupyter notebook
 ```
 
-Once activated, your terminal prompt should change to include `(evilnkode)`, indicating the environment is active.
-
-## Running CLI Scripts
-
-The project includes two main CLI scripts: `cli.visualnkode` and `cli.benchmark_histogram`. Below are instructions to run each.
-
-### Running `cli.visualnkode`
-
-To execute the `visualnkode` CLI script:
-
+### Option 2: Using JupyterLab
 ```bash
-python -m cli.visualnkode
+# Ensure your environment is activated
+# Start JupyterLab
+jupyter lab
 ```
 
-- This command runs the `visualnkode` module from the `cli` package.
-- To view available options and arguments, use the `-help` flag:
-  ```bash
-  python -m cli.visualnkode -help
-  ```
-
-### Running `cli.benchmark_histogram`
-
-To execute the `benchmark_histogram` CLI script:
-
-```bash
-python -m cli.benchmark_histogram
-```
-
-- This command runs the `benchmark_histogram` module, which may generate output such as benchmark results or histograms. For example, it might produce output like:
-  ```
-  File exists: output/slidingtowershufflekeypad-6-8-4-5-4-4-10000/benchmark/slidingtowershufflekeypad-6-8-4-5-4-4-10000.pkl
-  Bench SlidingTowerShuffle Break 5
-  Bench SlidingTowerShuffle Replay 5
-  ```
-- To view available options and arguments, use the `-help` flag:
-  ```bash
-  python -m cli.benchmark_histogram -help
-  ```
-
-## Using the `-help` Flag
-
-Both CLI scripts (`cli.visualnkode` and `cli.benchmark_histogram`) support a `-help` flag to display available command-line options and their descriptions. Run the following to explore options for each script:
-
-```bash
-python -m cli.visualnkode -help
-python -m cli.benchmark_histogram -help
-```
-
-This will provide detailed information about parameters, flags, and usage for each script.
-
-## Project Structure
-
-Key files and directories in the project:
-
-- `environment.yaml`: Conda environment configuration file.
-- `cli/`: Contains CLI scripts (`visualnkode` and `benchmark_histogram`).
-- `output/`: Directory where script outputs, such as benchmark results, are stored.
-- `src/`: Source code for the project.
-- `tests/`: Test scripts for the project.
-- `requirements.txt`: Additional dependencies (if needed outside Conda).
-
-For further details, explore the project documentation in the `docs/` directory.
+## Notebooks
+- [evilnkode](notebooks/evilkode.ipynb)

cli/benchmark_histogram.py

@@ -1,115 +0,0 @@
-import argparse
-from src.benchmark import benchmark
-import matplotlib.pyplot as plt
-from pathlib import Path
-from statistics import mean
-from src.keypad.keypad import (
-    RandomSplitShuffleKeypad,
-    RandomShuffleKeypad,
-    SlidingSplitShuffleKeypad,
-    SlidingTowerShuffleKeypad,
-)
-
-
-def bench_histogram(data, title, number_of_keys, properties_per_key, passcode_len, max_tries_before_lockout, complexity,
-                    disparity, run_count, save_path: Path = None):
-    min_val = min(data)
-    max_val = max(data)
-    bins = range(min_val, max_val + 2)
-    plt.hist(data, bins=bins, edgecolor='black')
-    plt.title(title)
-    plt.xlabel('# of Login Observations')
-    plt.ylabel('Simulations')
-    text = (f"number_of_keys={number_of_keys}\n"
-            f"properties_per_key={properties_per_key}\n"
-            f"passcode_len={passcode_len}\n"
-            f"max_tries_before_lockout={max_tries_before_lockout}\n"
-            f"complexity={complexity}\n"
-            f"disparity={disparity}\n"
-            f"run_count={run_count}")
-    plt.text(0.95, 0.95, text, transform=plt.gca().transAxes, fontsize=10,
-             verticalalignment='top', horizontalalignment='right', bbox=dict(facecolor='white', alpha=0.5))
-    if save_path:
-        save_path = save_path / "histogram"
-        save_path.mkdir(parents=True, exist_ok=True)
-        filename = (f"{title.replace(' ', '_')}_keys{number_of_keys}_"
-                    f"props{properties_per_key}_pass{passcode_len}_tries{max_tries_before_lockout}_"
-                    f"comp{complexity}_disp{disparity}_runs{run_count}.png")
-        plt.savefig(save_path / filename, bbox_inches='tight', dpi=300)
-    plt.close()
-
-
-def main():
-    parser = argparse.ArgumentParser(description='Benchmark Keypad Shuffle')
-    parser.add_argument('--shuffle_type', type=str,
-                        choices=['RandomSplitShuffle', 'RandomShuffle', 'SlidingSplitShuffle', 'SlidingTowerShuffle'],
-                        default='SlidingTowerShuffle', help='Type of keypad shuffle')
-    parser.add_argument('--number_of_keys', type=int, default=6, help='Number of keys')
-    parser.add_argument('--properties_per_key', type=int, default=8, help='Properties per key')
-    parser.add_argument('--passcode_len', type=int, default=4, help='Passcode length')
-    parser.add_argument('--max_tries_before_lockout', type=int, default=5, help='Max tries before lockout')
-    parser.add_argument('--complexity', type=int, default=4, help='Complexity')
-    parser.add_argument('--disparity', type=int, default=4, help='Disparity')
-    parser.add_argument('--run_count', type=int, default=10000, help='Number of runs')
-    parser.add_argument('--output_dir', type=str, default='./output',
-                        help='Output directory for histograms')
-
-    args = parser.parse_args()
-
-    shuffle_classes = {
-        'RandomSplitShuffle': RandomSplitShuffleKeypad,
-        'RandomShuffle': RandomShuffleKeypad,
-        'SlidingSplitShuffle': SlidingSplitShuffleKeypad,
-        'SlidingTowerShuffle': SlidingTowerShuffleKeypad
-    }
-
-    keypad_class = shuffle_classes[args.shuffle_type]
-    keypad = keypad_class.new_keypad(args.number_of_keys, args.properties_per_key)
-
-    shuffle_type = str(type(keypad)).lower().split('.')[-1].replace("'>", "")
-    run_name = f"{shuffle_type}-{args.number_of_keys}-{args.properties_per_key}-{args.passcode_len}-{args.max_tries_before_lockout}-{args.complexity}-{args.disparity}-{args.run_count}"
-    save_path = Path(args.output_dir) / run_name
-    bench_result = benchmark(
-        number_of_keys=args.number_of_keys,
-        properties_per_key=args.properties_per_key,
-        passcode_len=args.passcode_len,
-        max_tries_before_lockout=args.max_tries_before_lockout,
-        run_count=args.run_count,
-        complexity=args.complexity,
-        disparity=args.disparity,
-        keypad=keypad,
-        file_path=save_path,
-    )
-
-    print(f"Bench {args.shuffle_type} Break {mean(bench_result.iterations_to_break)}")
-    print(f"Bench {args.shuffle_type} Replay {mean(bench_result.iterations_to_replay)}")
-
-    bench_histogram(
-        bench_result.iterations_to_break,
-        f"{args.shuffle_type} Break",
-        args.number_of_keys,
-        args.properties_per_key,
-        args.passcode_len,
-        args.max_tries_before_lockout,
-        args.complexity,
-        args.disparity,
-        args.run_count,
-        save_path
-    )
-
-    bench_histogram(
-        bench_result.iterations_to_replay,
-        f"{args.shuffle_type} Replay",
-        args.number_of_keys,
-        args.properties_per_key,
-        args.passcode_len,
-        args.max_tries_before_lockout,
-        args.complexity,
-        args.disparity,
-        args.run_count,
-        save_path,
-    )
-
-
-if __name__ == "__main__":
-    main()

cli/visualnkode.py

@@ -1,253 +0,0 @@
-import json
-from typing import Iterable
-from dataclasses import dataclass, asdict
-from src.evilnkode import Observation
-from src.utils import observations, passcode_generator
-from pathlib import Path
-from PIL import Image, ImageDraw, ImageFont
-from src.keypad.keypad import (
-    BaseKeypad,
-    SlidingSplitShuffleKeypad,
-    SlidingTowerShuffleKeypad,
-    RandomShuffleKeypad,
-    RandomSplitShuffleKeypad,
-)
-import argparse
-
-
-@dataclass
-class ObservationSequence:
-    target_passcode: list[int]
-    observations: list[Observation]
-
-
-def new_observation_sequence(
-        keypad: BaseKeypad,
-        passcode_len: int,
-        complexity: int,
-        disparity: int,
-        numb_runs: int,
-) -> ObservationSequence:
-    passcode = passcode_generator(keypad.k, keypad.p, passcode_len, complexity, disparity)
-    obs_gen = observations(
-        keypad=keypad,
-        target_passcode=passcode,
-        number_of_observations=numb_runs,
-    )
-    return ObservationSequence(target_passcode=passcode, observations=[obs for obs in obs_gen])
-
-
-def _next_json_filename(base_dir: Path) -> Path:
-    """Find the next available observation_X.json file in base_dir."""
-    counter = 1
-    while True:
-        candidate = base_dir / f"observation_{counter}.json"
-        if not candidate.exists():
-            return candidate
-        counter += 1
-
-
-def save_observation_sequence_to_json(seq: ObservationSequence,
-                                      filename: Path) -> None:
-    filename.parent.mkdir(parents=True, exist_ok=True)
-
-    with filename.open("w", encoding="utf-8") as f:
-        json.dump(asdict(seq), f, indent=4)
-
-
-# ---------- Helpers ----------
-def _load_font(preferred: str, size: int) -> ImageFont.FreeTypeFont | ImageFont.ImageFont:
-    """Try a preferred TTF, fall back to common monospace, then PIL default."""
-    candidates = [
-        preferred,
-        "DejaVuSansMono.ttf",  # common on Linux
-        "Consolas.ttf",  # Windows
-        "Menlo.ttc", "Menlo.ttf",  # macOS
-        "Courier New.ttf",
-    ]
-    for c in candidates:
-        try:
-            return ImageFont.truetype(c, size)
-        except Exception:
-            continue
-    return ImageFont.load_default()
-
-
-def _text_size(draw: ImageDraw.ImageDraw, text: str, font: ImageFont.ImageFont) -> tuple[int, int]:
-    """Get (w, h) using font bbox for accurate layout."""
-    left, top, right, bottom = draw.textbbox((0, 0), text, font=font)
-    return int(right - left), int(bottom - top)
-
-
-def _join_nums(nums: Iterable[int]) -> str:
-    return " ".join(str(n) for n in nums)
-
-
-def _next_available_path(path: Path) -> Path:
-    """If path exists, append _1, _2, ..."""
-    if not path.exists():
-        return path
-    base, suffix = path.stem, path.suffix or ".png"
-    i = 1
-    while True:
-        candidate = path.with_name(f"{base}_{i}{suffix}")
-        if not candidate.exists():
-            return candidate
-        i += 1
-
-
-# ---------- Core rendering ----------
-def render_observation_to_png(
-        target_passcode: list[int],
-        obs: Observation,
-        out_path: Path,
-        *,
-        header_font_name: str = "DejaVuSans.ttf",
-        body_font_name: str = "DejaVuSans.ttf",
-        header_size: int = 28,
-        body_size: int = 24,
-        margin: int = 32,
-        row_padding_xy: tuple[int, int] = (16, 12),  # (x, y) padding inside row box
-        row_spacing: int = 14,
-        header_spacing: int = 10,
-        section_spacing: int = 18,
-        bg_color: str = "white",
-        fg_color: str = "black",
-        row_fill: str = "#f7f7f7",
-        row_outline: str = "#222222",
-):
-    """
-    Render a single observation:
-    - Top lines:
-        Target Passcode: {target}
-        Selected Keys:   {selected keys}
-    - Then a stack of row boxes representing the keypad rows.
-    """
-    out_path.parent.mkdir(parents=True, exist_ok=True)
-    out_path = _next_available_path(out_path)
-
-    # Fonts
-    header_font = _load_font(header_font_name, header_size)
-    body_font = _load_font(body_font_name, body_size)
-
-    # Prepare strings
-    header1 = f"Target Passcode: {_join_nums(target_passcode)}"
-    header2 = f"Selected Keys:  {_join_nums(obs.key_selection)}"
-    row_texts = [_join_nums(row) for row in obs.keypad]
-
-    # Measure to compute canvas size
-    # Provisional image for measurement
-    temp_img = Image.new("RGB", (1, 1), bg_color)
-    d = ImageDraw.Draw(temp_img)
-
-    h1_w, h1_h = _text_size(d, header1, header_font)
-    h2_w, h2_h = _text_size(d, header2, header_font)
-
-    row_text_sizes = [_text_size(d, t, body_font) for t in row_texts]
-    row_box_widths = [tw + 2 * row_padding_xy[0] for (tw, th) in row_text_sizes]
-    row_box_heights = [th + 2 * row_padding_xy[1] for (tw, th) in row_text_sizes]
-
-    content_width = max([h1_w, h2_w] + (row_box_widths or [0]))
-    total_rows_height = sum(row_box_heights) + row_spacing * max(0, len(row_box_heights) - 1)
-
-    width = content_width + 2 * margin
-    height = (
-            margin
-            + h1_h
-            + header_spacing
-            + h2_h
-            + section_spacing
-            + total_rows_height
-            + margin
-    )
-
-    # Create final image
-    img = Image.new("RGB", (max(width, 300), max(height, 200)), bg_color)
-    draw = ImageDraw.Draw(img)
-
-    # Draw headers
-    x = margin
-    y = margin
-    draw.text((x, y), header1, font=header_font, fill=fg_color)
-    y += h1_h + header_spacing
-    draw.text((x, y), header2, font=header_font, fill=fg_color)
-    y += h2_h + section_spacing
-
-    # Draw row boxes with evenly spaced numbers
-    max_box_width = max(row_box_widths) if row_box_widths else 0
-    for row, box_h in zip(obs.keypad, row_box_heights):
-        box_left = x
-        box_top = y
-        box_right = x + max_box_width
-        box_bottom = y + box_h
-
-        # draw row rectangle
-        draw.rectangle(
-            [box_left, box_top, box_right, box_bottom],
-            fill=row_fill,
-            outline=row_outline,
-            width=2
-        )
-
-        # evenly spaced numbers
-        n = len(row)
-        if n > 0:
-            available_width = max_box_width - 2 * row_padding_xy[0]
-            spacing = available_width / (n + 1)
-
-            for idx, num in enumerate(row, start=1):
-                num_text = str(num)
-                num_w, num_h = _text_size(draw, num_text, body_font)
-                num_x = box_left + row_padding_xy[0] + spacing * idx - num_w / 2
-                num_y = box_top + (box_h - num_h) // 2
-                draw.text((num_x, num_y), num_text, font=body_font, fill=fg_color)
-
-        y = box_bottom + row_spacing
-
-    img.save(out_path, format="PNG")
-
-
-def _next_run_dir(base_dir: Path) -> Path:
-    """Find the next available run directory under base_dir (run_001, run_002, ...)."""
-    counter = 1
-    while True:
-        run_dir = base_dir / f"run_{counter:03d}"
-        if not run_dir.exists():
-            run_dir.mkdir(parents=True)
-            return run_dir
-        counter += 1
-
-
-def render_sequence_to_pngs(seq: ObservationSequence, out_dir: Path) -> None:
-    out_dir.mkdir(parents=True, exist_ok=True)
-    run_dir = _next_run_dir(out_dir)
-    for i, obs in enumerate(seq.observations, start=1):
-        filename = run_dir / f"observation_{i:03d}.png"
-        render_observation_to_png(seq.target_passcode, obs, filename)
-
-
-if __name__ == "__main__":
-    shuffle_classes = {
-        'RandomSplitShuffle': RandomSplitShuffleKeypad,
-        'RandomShuffle': RandomShuffleKeypad,
-        'SlidingSplitShuffle': SlidingSplitShuffleKeypad,
-        'SlidingTowerShuffle': SlidingTowerShuffleKeypad
-    }
-    parser = argparse.ArgumentParser(description="Generate and save observation sequences with optional PNG rendering.")
-    parser.add_argument("--number-of-keys", type=int, default=6, help="Number of keys in the keypad (default: 6)")
-    parser.add_argument("--properties-per-key", type=int, default=9, help="Properties per key (default: 9)")
-    parser.add_argument("--passcode-length", type=int, default=4, help="Length of the passcode (default: 4)")
-    parser.add_argument("--complexity", type=int, default=0, help="Complexity of the passcode (default: 0)")
-    parser.add_argument("--disparity", type=int, default=0, help="Disparity of the passcode (default: 0)")
-    parser.add_argument("--num-runs", type=int, default=50, help="Number of observations to generate (default: 50)")
-    parser.add_argument("--shuffle-type", type=str, default="SlidingTowerShuffle", choices=list(shuffle_classes.keys()),
-                        help="Keypad shuffle type: 'RandomShuffle' or 'SlidingTowerShuffle' (default: SlidingTowerShuffle)")
-    parser.add_argument("--output-dir", type=str, default="./output",
-                        help="Custom output directory for JSON and PNG files")
-    args = parser.parse_args()
-    keypad = shuffle_classes[args.shuffle_type].new_keypad(6, 9)
-    obs_seq = new_observation_sequence(keypad, 4, 0, 0, numb_runs=50)
-    shuffle_type = str(type(keypad)).lower().split('.')[-1].replace("'>", "")
-    output_dir = Path(args.output_dir)
-    save_observation_sequence_to_json(obs_seq, output_dir / "obs.json")
-    render_sequence_to_pngs(obs_seq, output_dir / "obs_png")

docs/nkode_analysis.md

@@ -3,18 +3,17 @@
 Luke Oeding (Auburn University)
 
 ## What is an nKode?
-
 An nKode consists of a passcode $P$ selected utilizing the following setup:
 
-- a $k$ digit keypad, where each key has:
-- $p$ properties (position, central number, color, letter, emoji,...)
-- $m$ options for each property ($\#$ positions, $\#$ central numbers, $\#$ colors, $\#$ letters, $\#$ emoji, ... )
+* a $k$ digit keypad, where each key has:
+* $p$ properties (position, central number, color, letter, emoji,...)
+* $m$ options for each property (\# positions, \# central numbers, \# colors, \# letters, \# emoji, ... )
 
     - In principle the number of options for each property doesn't have to be the same, but for the sake of our analysis, we make this uniform choice.
     - Typically one wants to have all letters displayed exactly once on the keypad for any instance of a keypad, so we take $m = k$.
 
-- $\ell$ = length of the passcode, which is a sequence of $\ell$ letters (options) selected from any of the options.
-- a shuffling rule (the split-shuffle)
+* $\ell$ = length of the passcode, which is a sequence of $\ell$ letters (options) selected from any of the options. 
+* a shuffling rule (the split-shuffle)
 
 ## Split shuffling
 
@@ -84,6 +83,7 @@ We are interested in understanding the number of times an eavesdropping intruder
 
 [Brooks Brown says that the lower bound is $\min\{3,  s \log_2+1\}$, where $s$ is the number of attribute sets, for an nKode of complexity $c=1$, regardless of nKode length $l$, or the number of tiles $t$.]
 
+
 Regarding the eavesdropper attack we should also consider the case of a keystroke recorder that doesn't observe the labels on the keys of the nKode keypad. 
 Blind single attacks and repeated blind attempts that successfully log in, and learning the nKode. 
 
@@ -95,11 +95,16 @@ Blind single attacks and repeated blind attempts that successfully log in, and l
 
 The probability that a (blind) randomly entered key-string will yield a successful login:
 
-$R = \frac{\#(\text{passcodes that would yield a correct login})}{\#(\text{possible passcodes})}.$
+$
+R = \frac{\text{Num}(\text{passcodes that would yield a correct login})}{\text{Num}(\text{possible passcodes})}.
+$
 
+(Num stands for 'number of'.)
 This should be simply computed using the number of keys $k$ and the length $l$ of the passcode:
 
-$R = (1/k)^l.$
+$
+R = (1/k)^l.
+$
 
 For example, a 6 digit pin would yield a one-in-a-million chance of blindly hitting the correct passcode. 
 
@@ -138,9 +143,13 @@ For example,
 ### Guessing the passcode:
 
 The likelihood that a randomly chosen passcode will yield a successful login no matter what shuffle has been applied, i.e. so that the attacker can successfully log in as many times as they want:
-$1 / \#(\text{possible passcodes}).$
+$1 / \text{Num}(\text{possible passcodes}).$
 
-For example, when $k=m=10, p=7$ for $\ell = 4$ this probability is $(70)^{-4} \sim 4.16*10^{-8}$, or about 4 chances in 100 million, and for $\ell = 6$ this probability is $(70)^{-6} \sim 8.5*10^{-12}$, or about 8.5 chances in 1 trillion.
+For example, when $k=m=10, p=7$ for $\ell = 4$ this probability is 
+
+$(70)^{-4} \sim 4.16*10^{-8},$
+
+ or about 4 chances in 100 million, and for $\ell = 6$ this probability is $(70)^{-6} \sim 8.5*10^{-12}$, or about 8.5 chances in 1 trillion.  
 
 ## Multiple Blind Attempts
 
@@ -155,7 +164,6 @@ For example, when $k=10$ for $\ell = 4$ and $s=2$ this probability is $((10)^{-4
 For example, when $k=10$ for $\ell = 4$ and $s=3$ this probability is $((10)^{-4})^3 = 10^{-12}$, [same order of magnitude as a passcode of length 6], and for $\ell = 6$ this probability is $((10)^{-6})^3 = 10^{-18}$, or 1 chance in one billion billion. 
 
 ## Incorrect nKodes that still work
-
 We should also consider the number of nKodes that would yield a successful sequence of $s$ logins. [Add example]
 
 ## Longer passcodes might not always be more secure
@@ -185,3 +193,348 @@ If someone is able to observe the user typing the nKode, or record the keystroke
 ### Eye tracking
 
 Eye tracker on phone: How good would this need to be in order to see what attribute the user is searching for?
+
+# Higher Complexity
+
+## Dispersion
+Dispersion is an operation on a keypad that permutes properties in such a way that 2 observations of the nKode are sufficient to learn the passcode. It does this by applying a distinct rotation to each property. The authors note that this is possible when the number of keys is not larger than the number of properties per key, because this ensures that there are enough distinct rotations so that no repetitions occur.  There are more general permutations that can also have this property, and it seems that this is already implemented in the Enrollment_Login_Renewal. 
+
+## Split shuffle
+Split shuffle attempts to avoid the dispersion permutation of the keypad so as to increase the number of times an intruder would have to observe the nKode being entered.
+
+The properties are divided into 2 sets, each set will be shuffled by the same shuffle applied to all properties in that set of properties.
+
+Note: by observing both keypads (before and after a split-shuffle), one can learn both what the split was, and what the two shuffles were.
+
+We're intertested in studying how many observations an intruder must make in order to learn the passcode with the split shuffle in place. There are a few scenarios I can imagine. 
+
+    * No split (analyzed above).
+    * The split is determined once, and then the shuffles only happen on one side of the split.
+    * The split changes every time randomly.
+    * The split changes every time by a set strategy.
+
+Of course we can consider these questions each time the metaparameters change. Recall,  
+    * a $k$ digit keypad,
+    * $p$ properties (position, central number, color, letter, emoji,...)
+    * $m$ options for each property (\# positions, \# central numbers, \# colors, \# letters, \# emoji, ... ). typically  $m = k$.
+    * $\ell$ = length of the passcode, which is a sequence of $\ell$ letters (options) selected from any of the options. 
+
+Notice that when $k = 1$ the problem is nearly trivial. It doesn't matter what the properties are, the only thing the user is entering is $\ell$, and that can be observed in 1 try.
+
+When $k = 2$. Here's the case $p = 2$ and a 4 letter passcode.
+
+      
+|key   | p0 | p1 |
+|:----:|:--:|:--:|
+|key 0 | a0 | b0 |
+|key 1 | a1 | b1 |
+
+After a shuffle [attribute 1]
+
+|key   | p0 | p1 |
+|:----:|:--:|:--:|
+|key 0 | a0 | b1 |
+|key 1 | a1 | b0 |
+
+interaction:
+
+|what |  |||||
+|--------|--|--|--|--|--|
+|Passcode| a0|b1|a1|b0|
+|Display 1| 0|1|1|0|
+|Display 2| 0|0|1|1|
+
+The possible passcodes after display 1: 
+0{a0,b0},1{a1,b1},1{a1,b1},0{a0,b0}
+
+The possible passcodes after display 2: 
+0{a0,b1},0{a0,b1},1{a1,b0},1{a1,b0}
+
+Intersect:
+{a0},{b1},{a1},{b0}
+Passcode learned in 2.
+
+
+When $k = 2$. Here's the case $p = 4$ and a 4 letter passcode.
+
+
+|key   | p0 | p1 | p2 | p3 |
+|:----:|:--:|:--:|:--:|:--:|
+|key 0 | a0  | b0  | c0  | d0  |
+|key 1 | a1  | b1  | c1  | d1  |
+
+After a shuffle [attribute 1,2]
+
+|key   | p0 | p1 | p2 | p3 |
+|:----:|:--:|:--:|:--:|:--:|
+|key 0 | a0  | b1  | c1  | d0  |
+|key 1 | a1  | b0  | c0  | d1  |
+
+
+interaction:
+
+|what |  |||||
+|--------|--|--|--|--|--|
+|Passcode| a0|c1|c1|d0|
+|Display 1| 0|1|1|0|
+|Display 2| 0|0|0|0|
+
+The possible passcodes after display 1: 
+0{a0,b0,c0,d0},1{a1,b1,c1,d1},1{a1,b1,c1,d1},0{a0,b0,c0,d0}
+
+The possible passcodes after display 2: 
+0{a0,b1,c1,d0},0{a0,b1,c1,d0},0{a0,b1,c1,d0},0{a0,b1,c1,d0}
+
+Intersect:
+{a0,d0},{b1,c1},{b1,c1},{a0,d0}.
+
+Passcode is not learned yet.
+
+After a 2nd shuffle [attribute 1,3]
+
+|key   | p0 | p1 | p2 | p3 |
+|:----:|:--:|:--:|:--:|:--:|
+|key 0 | a0  | b1  | c0  | d1  |
+|key 1 | a1  | b0  | c1  | d0  |
+
+|what |  |||||
+|--------|--|--|--|--|--|
+|Passcode| a0|c1|c1|d0|
+|Display 1| 0|1|1|0|
+|Display 2| 0|0|0|0|
+|Display 3| 0|1|1|1|
+
+The possible passcodes after display 3: 
+0{a0,b1,c0,d1},1{a1,b0,c1,d0},1{a1,b0,c1,d0},1{a1,b0,c1,d0}
+
+Intersect:
+{a0},{c1},{c1},{d0}.
+
+Passcode learned in 3.
+
+
+Here's the case $p = 4$ and an 8 letter passcode.
+
+
+|key   | p0 | p1 | p2 | p3 |
+|:----:|:--:|:--:|:--:|:--:|
+|key 0 | a0  | b0  | c0  | d0  |
+|key 1 | a1  | b1  | c1  | d1  |
+
+Shuffle 1 [attribute 1,2]
+
+|key   | p0 | p1 | p2 | p3 |
+|:----:|:--:|:--:|:--:|:--:|
+|key 0 | a0  | b1  | c1  | d0  |
+|key 1 | a1  | b0  | c0  | d1  |
+
+Shuffle 2 [attribute 1,3]
+
+|key   | p0 | p1 | p2 | p3 |
+|:----:|:--:|:--:|:--:|:--:|
+|key 0 | a0  | b1  | c0  | d1  |
+|key 1 | a1  | b0  | c1  | d0  |
+
+interaction:
+
+|what |  ||||||||||
+|--------|--|--|--|--|--|--|--|--|--|--|
+|Passcode| a0|c1|c1|d0|b1|b0|a1|d0|
+|Display 1| 0| 1| 1| 0| 1| 0| 1| 0|
+|Display 2| 0| 0| 0| 0| 0| 1| 1| 0|
+|Display 3| 0| 1| 1| 1| 0| 1| 1| 1|
+
+The possible passcodes after display 1: 
+0{a0,b0,c0,d0},1{a1,b1,c1,d1},1{a1,b1,c1,d1},0{a0,b0,c0,d0},
+1{a1,b1,c1,d1},0{a0,b0,c0,d0},1{a1,b1,c1,d1},0{a0,b0,c0,d0}
+
+The possible passcodes after display 2: 
+0{a0,b1,c1,d0},0{a0,b1,c1,d0},0{a0,b1,c1,d0},0{a0,b1,c1,d0},
+0{a0,b1,c1,d0},1{a1,b0,c0,d1},1{a1,b0,c0,d1},0{a0,b1,c1,d0}
+
+Intersect:
+{a0,d0},{b1,c1},{b1,c1},{a0,d0},{b1,c1},{b0,c0},{a1,d1},{a0,d0}
+
+Passcode is not learned yet.
+
+The possible passcodes after display 3: 
+0{a0,b1,c0,d1},1{a1,b0,c1,d0},1{a1,b0,c1,d0},1{a1,b0,c1,d0},
+0{a0,b1,c0,d1},1{a1,b0,c1,d0},1{a1,b0,c1,d0},1{a1,b0,c1,d0}
+
+Intersect:
+{a0},{c1},{c1},{d0},{b1},{b0},{a1},{d0}
+
+Passcode learned in 3.
+
+
+Here's the case $p = 8$ and an 4 letter passcode.
+
+
+|key   | p0 | p1 | p2 | p3 | p4 | p5 | p6 | p7 |
+|:----:|:--:|:--:|:--:|:--:|:--:|:--:|:--:|:--:|
+|key 0 | a0  | b0  | c0  | d0  | e0  | f0  | g0  | h0  |
+|key 1 | a1  | b1  | c1  | d1  | e1  | f1  | g1  | h1  |
+
+Shuffle 1 [attribute 0,2,4,6] [a,c,e,g]
+
+|key   | p0 | p1 | p2 | p3 | p4 | p5 | p6 | p7 |
+|:----:|:--:|:--:|:--:|:--:|:--:|:--:|:--:|:--:|
+|key 0 | a1  | b0  | c1  | d0  | e1  | f0  | g1  | h0  |
+|key 1 | a0  | b1  | c0  | d1  | e0  | f1  | g0  | h1  |
+
+Shuffle 2 [attribute 2,3,4,5] [c,d,e,f]
+
+|key   | p0 | p1 | p2 | p3 | p4 | p5 | p6 | p7 |
+|:----:|:--:|:--:|:--:|:--:|:--:|:--:|:--:|:--:|
+|key 0 | a0  | b0  | c1  | d1  | e1  | f1  | g0  | h0  |
+|key 1 | a1  | b1  | c0  | d0  | e0  | f0  | g1  | h1  |
+
+Shuffle 3 [attribute 0,4,5,6] [a,e,f,g]
+
+|key   | p0 | p1 | p2 | p3 | p4 | p5 | p6 | p7 |
+|:----:|:--:|:--:|:--:|:--:|:--:|:--:|:--:|:--:|
+|key 0 | a1  | b0  | c0  | d0  | e1  | f1  | g1  | h0  |
+|key 1 | a0  | b1  | c1  | d1  | e0  | f0  | g0  | h1  |
+
+
+interaction:
+
+|what |  ||||||||||
+|--------|--|--|--|--|--|--|--|--|--|--|
+|Passcode| a1|c1|b0|h0|f0|e1|a1|d0|
+|Display 1| 1| 1| 0| 0| 0| 1| 1| 0|
+|Display 2| 0| 0| 0| 0| 0| 0| 0| 0|
+|Display 3| 1| 0| 0| 0| 1| 0| 1| 1|
+|Display 4| 0| 1| 0| 0| 1| 0| 0| 0|
+
+The possible passcodes from display 1:  
+`1{a1,b1,c1,d1,e1,f1,g1,h1},`  
+`1{a1,b1,c1,d1,e1,f1,g1,h1},`  
+`0{a0,b0,c0,d0,e0,f0,g0,h0},`  
+`0{a0,b0,c0,d0,e0,f0,g0,h0},`  
+`0{a0,b0,c0,d0,e0,f0,g0,h0},`  
+`1{a1,b1,c1,d1,e1,f1,g1,h1},`  
+`1{a1,b1,c1,d1,e1,f1,g1,h1},`  
+`0{a0,b0,c0,d0,e0,f0,g0,h0}`
+
+The possible passcodes from display 2:  
+`0{a1,b0,c1,d0,e1,f0,g1,h0},`  
+`0{a1,b0,c1,d0,e1,f0,g1,h0},`  
+`0{a1,b0,c1,d0,e1,f0,g1,h0},`  
+`0{a1,b0,c1,d0,e1,f0,g1,h0},`  
+`0{a1,b0,c1,d0,e1,f0,g1,h0},`  
+`0{a1,b0,c1,d0,e1,f0,g1,h0},`  
+`0{a1,b0,c1,d0,e1,f0,g1,h0},`  
+`0{a1,b0,c1,d0,e1,f0,g1,h0}`
+
+Intersect:  
+`1{a1,c1,e1,g1},`  
+`1{a1,c1,e1,g1},`  
+`0{b0,d0,f0,h0},`  
+`0{b0,d0,f0,h0},`  
+`0{b0,d0,f0,h0},`  
+`1{a1,c1,e1,g1},`  
+`1{a1,c1,e1,g1},`  
+`0{b0,d0,f0,h0}`  
+
+Passcode is not learned yet.
+
+Shuffle 2 [attribute 2,3,4,5] [c,d,e,f]
+
+|key   | p0 | p1 | p2 | p3 | p4 | p5 | p6 | p7 |
+|:----:|:--:|:--:|:--:|:--:|:--:|:--:|:--:|:--:|
+|key 0 | a0  | b0  | c1  | d1  | e1  | f1  | g0  | h0  |
+|key 1 | a1  | b1  | c0  | d0  | e0  | f0  | g1  | h1  |
+
+So before observing the input for the 3rd attempt:
+Hits for each key from prior information:
+[1001][1001]
+(1/2 are 1's are 1/2 are 0's for every key.)
+
+Now observe the sequence 10001011
+The possible passcodes from display 3:  
+`1{a1,b1,c0,d0,e0,f0,g1,h1},`  
+`0{a0,b0,c1,d1,e1,f1,g0,h0},`  
+`0{a0,b0,c1,d1,e1,f1,g0,h0},`  
+`0{a0,b0,c1,d1,e1,f1,g0,h0},`  
+`1{a1,b1,c0,d0,e0,f0,g1,h1},`  
+`0{a0,b0,c1,d1,e1,f1,g0,h0},`  
+`1{a1,b1,c0,d0,e0,f0,g1,h1},`  
+`1{a1,b1,c0,d0,e0,f0,g1,h1}`  
+
+Intersect with prior information:  
+`1{a1,g1},`  
+`0{c1,e1},`  
+`0{b0,h0},`  
+`0{b0,h0},`  
+`1{d0,f0},`  
+`0{c1,e1},`  
+`1{a1,g1},`  
+`1{d0,f0}`  
+
+Passcode not learned yet, but after one more shuffle, we think we would learn the passcode.
+
+Shuffle 3 [attribute 0,4,5,6] [a,e,f,g]
+
+|key   | p0 | p1 | p2 | p3 | p4 | p5 | p6 | p7 |
+|:----:|:--:|:--:|:--:|:--:|:--:|:--:|:--:|:--:|
+|key 0 | a1  | b0  | c0  | d0  | e1  | f1  | g1  | h0  |
+|key 1 | a0  | b1  | c1  | d1  | e0  | f0  | g0  | h1  |
+
+So before observing the input for the 4th attempt:  
+Hits for each key from prior information:  
+[0][10][0][0][0][10][0][01]  
+(So several of the correct keys are identified, only letters in positions 1,5,7 are unknown)
+
+
+The possible passcodes from display 4:   
+`0{a1,b0,c0,d0,e1,f1,g1,h0},`  
+`1{a0,b1,c1,d1,e0,f0,g0,h1},`  
+`0{a1,b0,c0,d0,e1,f1,g1,h0},`  
+`0{a1,b0,c0,d0,e1,f1,g1,h0},`  
+`1{a0,b1,c1,d1,e0,f0,g0,h1},`  
+`0{a1,b0,c0,d0,e1,f1,g1,h0},`  
+`0{a1,b0,c0,d0,e1,f1,g1,h0},`  
+`0{a1,b0,c0,d0,e1,f1,g1,h0},`  
+
+Intersect:  
+`{a1,g1},`  
+`{c1},`  
+`{b0,h0},`  
+`{b0,h0},`  
+`{f0},`  
+`{e1},`  
+`{a1,g1},`  
+`{d0}`  
+
+Passcode only paritally learned after 3 shuffles
+- uncertain about positions 0,2,3,6  = {a1 or g1}, {b0 or h0}
+- certain about positions 1,4,5,7 = c1,f0,e1,d0
+
+Shuffles:  
+[],   
+[attribute 0,2,4,6] [a c e g ]  
+[attribute 2,3,4,5] [  cdef  ]  
+[attribute 0,4,5,6] [a   efg ]  
+1,7 [b,h] - not shuffled 4 times, so the key pressed was always the same for the 3rd and 4th character.
+
+3 -- shuffled 1 time, not shuffled 3 times  
+4 -- shuffled 3 times, not shuffled 1 time  
+2,5,6 -- shuffled 2 times, not shuffled 2 times  
+
+Note that this passcode didn't use the letter g, 
+
+This experiment makes us think of two learning tasks. 
+1) The ability to learn any possible passcode character from observations of inputs
+2) The liklihood of learning a given passcode of a fixed length.
+3) Could you get the correct entry even with partial information?
+4) Probabilistic attack for guessing the correct sequence? 
+    First split shuffle evenly splits things, so you don't gain much. Subsequent shuffles will start to bias toward the correct passcode. The trade-off is that if you don't shuffle a position then the intruder can just use the same input as before and can enter the correct key without knowing the correct icon, but if you do shuffle, then the intruder learns more information.
+
+
+
+One key I’m understanding better now: There’s a trade-off between (1) information being learned by the intruder and (2) the chances that an intruder could key in a correct key-sequence for each subsequent observation / login attempt.
+
+If an attribute is not shuffled, then that increases the chance for (2), and if an attribute is shuffled that increases the chance for (1). 
+
+I think that when the selection of the sets is randomized like you’re doing, you’re getting the optimal trade-off between these two things. However, there’s also probably a strategy that might be even more optimal than just randomly choosing a split each time. If each shuffle chooses for its set of half of the attributes: half from the attributes that were previously shuffled and half from the attributes that weren’t shuffled in the previous shuffle. You could look back essentially log_2(p) steps (where p is the number of attributes) and similarly subdivide. This seems to be a way to balance the tradeoff for consecutive observations.

environment.yaml

@@ -1,544 +0,0 @@
-name: base
-channels:
-  - defaults
-dependencies:
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-  - ruamel.yaml=0.18.6=py312h80987f9_0
-  - ruamel.yaml.clib=0.2.8=py312h80987f9_0
-  - ruamel_yaml=0.17.21=py312h80987f9_0
-  - s3fs=2024.3.1=py312hca03da5_0
-  - safetensors=0.4.5=py312h7805bc0_1
-  - scikit-image=0.24.0=py312hd77ebd4_0
-  - scikit-learn=1.5.1=py312hd77ebd4_0
-  - scipy=1.13.1=py312ha409365_0
-  - scrapy=2.12.0=py312hca03da5_0
-  - seaborn=0.13.2=py312hca03da5_0
-  - semver=3.0.2=py312hca03da5_0
-  - send2trash=1.8.2=py312hca03da5_0
-  - service_identity=18.1.0=pyhd3eb1b0_1
-  - setuptools=75.1.0=py312hca03da5_0
-  - shellingham=1.5.0=py312hca03da5_0
-  - sip=6.7.12=py312h313beb8_0
-  - six=1.16.0=pyhd3eb1b0_1
-  - smart_open=5.2.1=py312hca03da5_0
-  - smmap=4.0.0=pyhd3eb1b0_0
-  - snappy=1.2.1=h313beb8_0
-  - sniffio=1.3.0=py312hca03da5_0
-  - snowballstemmer=2.2.0=pyhd3eb1b0_0
-  - sortedcontainers=2.4.0=pyhd3eb1b0_0
-  - soupsieve=2.5=py312hca03da5_0
-  - sphinx=7.3.7=py312hca03da5_0
-  - sphinxcontrib-applehelp=1.0.2=pyhd3eb1b0_0
-  - sphinxcontrib-devhelp=1.0.2=pyhd3eb1b0_0
-  - sphinxcontrib-htmlhelp=2.0.0=pyhd3eb1b0_0
-  - sphinxcontrib-jsmath=1.0.1=pyhd3eb1b0_0
-  - sphinxcontrib-qthelp=1.0.3=pyhd3eb1b0_0
-  - sphinxcontrib-serializinghtml=1.1.10=py312hca03da5_0
-  - spyder=6.0.1=py312hca03da5_0
-  - spyder-kernels=3.0.0=py312h989b03a_0
-  - sqlalchemy=2.0.34=py312hbe2cdee_0
-  - sqlite=3.45.3=h80987f9_0
-  - stack_data=0.2.0=pyhd3eb1b0_0
-  - statsmodels=0.14.2=py312ha86b861_0
-  - streamlit=1.40.1=py312hca03da5_0
-  - superqt=0.6.7=py312h989b03a_0
-  - sympy=1.13.2=py312hca03da5_0
-  - tabulate=0.9.0=py312hca03da5_0
-  - tapi=1100.0.11=h8754e6a_1
-  - tbb=2021.8.0=h48ca7d4_0
-  - tblib=1.7.0=pyhd3eb1b0_0
-  - tenacity=9.0.0=py312hca03da5_0
-  - terminado=0.17.1=py312hca03da5_0
-  - text-unidecode=1.3=pyhd3eb1b0_0
-  - textdistance=4.6.3=py312h989b03a_0
-  - threadpoolctl=3.5.0=py312h989b03a_0
-  - three-merge=0.1.1=pyhd3eb1b0_0
-  - tifffile=2023.4.12=py312hca03da5_0
-  - tinycss2=1.2.1=py312hca03da5_0
-  - tk=8.6.14=h6ba3021_0
-  - tldextract=5.1.2=py312hca03da5_0
-  - tokenizers=0.20.1=py312he2d9c3e_1
-  - toml=0.10.2=pyhd3eb1b0_0
-  - tomli=2.0.1=py312hca03da5_1
-  - tomlkit=0.13.2=py312hca03da5_0
-  - toolz=0.12.0=py312hca03da5_0
-  - tornado=6.4.1=py312h80987f9_0
-  - tqdm=4.66.5=py312h989b03a_0
-  - traitlets=5.14.3=py312hca03da5_0
-  - transformers=4.45.2=py312hca03da5_0
-  - truststore=0.8.0=py312hca03da5_0
-  - twisted=23.10.0=py312hca03da5_0
-  - typer=0.9.0=py312hca03da5_0
-  - typing-extensions=4.11.0=py312hca03da5_0
-  - typing_extensions=4.11.0=py312hca03da5_0
-  - tzdata=2024b=h04d1e81_0
-  - uc-micro-py=1.0.1=py312hca03da5_0
-  - ujson=5.10.0=py312h313beb8_0
-  - unicodedata2=15.1.0=py312h80987f9_0
-  - unidecode=1.3.8=py312hca03da5_0
-  - unixodbc=2.3.11=h1a28f6b_0
-  - urllib3=2.2.3=py312hca03da5_0
-  - utf8proc=2.6.1=h80987f9_1
-  - w3lib=2.1.2=py312hca03da5_0
-  - watchdog=4.0.1=py312h80987f9_0
-  - wcwidth=0.2.5=pyhd3eb1b0_0
-  - webencodings=0.5.1=py312hca03da5_2
-  - websocket-client=1.8.0=py312hca03da5_0
-  - werkzeug=3.0.6=py312hca03da5_0
-  - whatthepatch=1.0.2=py312hca03da5_0
-  - wheel=0.44.0=py312hca03da5_0
-  - widgetsnbextension=3.6.6=py312hca03da5_0
-  - wrapt=1.14.1=py312h80987f9_0
-  - wurlitzer=3.0.2=py312hca03da5_0
-  - xarray=2023.6.0=py312hca03da5_0
-  - xlwings=0.32.1=py312hca03da5_0
-  - xxhash=0.8.0=h1a28f6b_3
-  - xyzservices=2022.9.0=py312hca03da5_1
-  - xz=5.4.6=h80987f9_1
-  - yaml=0.2.5=h1a28f6b_0
-  - yaml-cpp=0.8.0=h313beb8_1
-  - yapf=0.40.2=py312hca03da5_0
-  - yarl=1.18.0=py312h80987f9_0
-  - zeromq=4.3.5=h313beb8_0
-  - zfp=1.0.0=h313beb8_0
-  - zict=3.0.0=py312hca03da5_0
-  - zipp=3.21.0=py312hca03da5_0
-  - zlib=1.2.13=h18a0788_1
-  - zlib-ng=2.0.7=h80987f9_0
-  - zope=1.0=py312hca03da5_1
-  - zope.interface=7.1.1=py312h80987f9_0
-  - zstandard=0.23.0=py312h1a4646a_1
-  - zstd=1.5.6=hfb09047_0
-  - pip:
-      - svgpathtools==1.7.0
-      - svgwrite==1.4.3
-prefix: /opt/homebrew/anaconda3

environment.yml

@@ -0,0 +1,125 @@
+name: evilnkode
+channels:
+  - defaults
+dependencies:
+  - anyio=4.6.2=py312hca03da5_0
+  - appnope=0.1.3=py312hca03da5_1001
+  - argon2-cffi=21.3.0=pyhd3eb1b0_0
+  - argon2-cffi-bindings=21.2.0=py312h80987f9_0
+  - asttokens=2.0.5=pyhd3eb1b0_0
+  - async-lru=2.0.4=py312hca03da5_0
+  - attrs=24.2.0=py312hca03da5_0
+  - babel=2.11.0=py312hca03da5_0
+  - beautifulsoup4=4.12.3=py312hca03da5_0
+  - bleach=6.2.0=py312hca03da5_0
+  - brotli-python=1.0.9=py312h313beb8_8
+  - bzip2=1.0.8=h80987f9_6
+  - ca-certificates=2024.12.31=hca03da5_0
+  - certifi=2024.12.14=py312hca03da5_0
+  - cffi=1.17.1=py312h3eb5a62_0
+  - charset-normalizer=3.3.2=pyhd3eb1b0_0
+  - comm=0.2.1=py312hca03da5_0
+  - debugpy=1.6.7=py312h313beb8_0
+  - decorator=5.1.1=pyhd3eb1b0_0
+  - defusedxml=0.7.1=pyhd3eb1b0_0
+  - executing=0.8.3=pyhd3eb1b0_0
+  - expat=2.6.3=h313beb8_0
+  - h11=0.14.0=py312hca03da5_0
+  - httpcore=1.0.2=py312hca03da5_0
+  - httpx=0.27.0=py312hca03da5_0
+  - idna=3.7=py312hca03da5_0
+  - ipykernel=6.29.5=py312hca03da5_0
+  - ipython=8.27.0=py312hca03da5_0
+  - jedi=0.19.1=py312hca03da5_0
+  - jinja2=3.1.4=py312hca03da5_1
+  - json5=0.9.25=py312hca03da5_0
+  - jsonschema=4.23.0=py312hca03da5_0
+  - jsonschema-specifications=2023.7.1=py312hca03da5_0
+  - jupyter-lsp=2.2.0=py312hca03da5_0
+  - jupyter_client=8.6.0=py312hca03da5_0
+  - jupyter_core=5.7.2=py312hca03da5_0
+  - jupyter_events=0.10.0=py312hca03da5_0
+  - jupyter_server=2.14.1=py312hca03da5_0
+  - jupyter_server_terminals=0.4.4=py312hca03da5_1
+  - jupyterlab=4.2.5=py312hca03da5_0
+  - jupyterlab_pygments=0.1.2=py_0
+  - jupyterlab_server=2.27.3=py312hca03da5_0
+  - libcxx=14.0.6=h848a8c0_0
+  - libffi=3.4.4=hca03da5_1
+  - libsodium=1.0.18=h1a28f6b_0
+  - markupsafe=2.1.3=py312h80987f9_0
+  - matplotlib-inline=0.1.6=py312hca03da5_0
+  - mistune=2.0.4=py312hca03da5_0
+  - nbclient=0.8.0=py312hca03da5_0
+  - nbconvert=7.16.4=py312hca03da5_0
+  - nbformat=5.10.4=py312hca03da5_0
+  - ncurses=6.4=h313beb8_0
+  - nest-asyncio=1.6.0=py312hca03da5_0
+  - notebook=7.2.2=py312hca03da5_1
+  - notebook-shim=0.2.3=py312hca03da5_0
+  - openssl=3.0.15=h80987f9_0
+  - overrides=7.4.0=py312hca03da5_0
+  - packaging=24.1=py312hca03da5_0
+  - pandocfilters=1.5.0=pyhd3eb1b0_0
+  - parso=0.8.3=pyhd3eb1b0_0
+  - pexpect=4.8.0=pyhd3eb1b0_3
+  - pip=24.2=py312hca03da5_0
+  - platformdirs=3.10.0=py312hca03da5_0
+  - prometheus_client=0.21.0=py312hca03da5_0
+  - prompt-toolkit=3.0.43=py312hca03da5_0
+  - prompt_toolkit=3.0.43=hd3eb1b0_0
+  - psutil=5.9.0=py312h80987f9_0
+  - ptyprocess=0.7.0=pyhd3eb1b0_2
+  - pure_eval=0.2.2=pyhd3eb1b0_0
+  - pycparser=2.21=pyhd3eb1b0_0
+  - pygments=2.15.1=py312hca03da5_1
+  - pysocks=1.7.1=py312hca03da5_0
+  - python=3.12.7=h99e199e_0
+  - python-dateutil=2.9.0post0=py312hca03da5_2
+  - python-fastjsonschema=2.20.0=py312hca03da5_0
+  - python-json-logger=2.0.7=py312hca03da5_0
+  - pytz=2024.1=py312hca03da5_0
+  - pyyaml=6.0.2=py312h80987f9_0
+  - pyzmq=25.1.2=py312h313beb8_0
+  - readline=8.2=h1a28f6b_0
+  - referencing=0.30.2=py312hca03da5_0
+  - requests=2.32.3=py312hca03da5_1
+  - rfc3339-validator=0.1.4=py312hca03da5_0
+  - rfc3986-validator=0.1.1=py312hca03da5_0
+  - rpds-py=0.10.6=py312h2aea54e_1
+  - send2trash=1.8.2=py312hca03da5_0
+  - setuptools=75.1.0=py312hca03da5_0
+  - six=1.16.0=pyhd3eb1b0_1
+  - sniffio=1.3.0=py312hca03da5_0
+  - soupsieve=2.5=py312hca03da5_0
+  - sqlite=3.45.3=h80987f9_0
+  - stack_data=0.2.0=pyhd3eb1b0_0
+  - terminado=0.17.1=py312hca03da5_0
+  - tinycss2=1.2.1=py312hca03da5_0
+  - tk=8.6.14=h6ba3021_0
+  - tornado=6.4.1=py312h80987f9_0
+  - traitlets=5.14.3=py312hca03da5_0
+  - typing-extensions=4.11.0=py312hca03da5_0
+  - typing_extensions=4.11.0=py312hca03da5_0
+  - tzdata=2024b=h04d1e81_0
+  - urllib3=2.2.3=py312hca03da5_0
+  - wcwidth=0.2.5=pyhd3eb1b0_0
+  - webencodings=0.5.1=py312hca03da5_2
+  - websocket-client=1.8.0=py312hca03da5_0
+  - wheel=0.44.0=py312hca03da5_0
+  - xz=5.4.6=h80987f9_1
+  - yaml=0.2.5=h1a28f6b_0
+  - zeromq=4.3.5=h313beb8_0
+  - zlib=1.2.13=h18a0788_1
+  - pip:
+      - contourpy==1.3.1
+      - cycler==0.12.1
+      - fonttools==4.55.3
+      - iniconfig==2.0.0
+      - kiwisolver==1.4.7
+      - matplotlib==3.9.3
+      - numpy==2.1.3
+      - pillow==11.0.0
+      - pluggy==1.5.0
+      - pyparsing==3.2.0
+      - pytest==8.3.4

src/benchmark.py

@@ -1,19 +1,84 @@
-from tqdm import tqdm
-from src.evilnkode import EvilNKode
+from src.evilkode import Observation, Evilkode
+from src.keypad import Keypad
+import random
 from dataclasses import dataclass
-from src.utils import observations, passcode_generator
-from src.keypad.keypad import BaseKeypad
+from statistics import mean, variance
+from enum import Enum
 from pathlib import Path
-import pickle
-
 
 @dataclass
 class Benchmark:
-    iterations_to_break: list[int]
-    iterations_to_replay: list[int]
+    mean: int
+    variance: int
+    runs: list[int]
+
+class ShuffleTypes(Enum):
+    FULL_SHUFFLE = "FULL_SHUFFLE"
+    SPLIT_SHUFFLE = "SPLIT_SHUFFLE"
+
+def observations(number_of_keys, properties_per_key, passcode_len, complexity: int, disparity: int, shuffle_type: ShuffleTypes):
+    k = number_of_keys
+    p = properties_per_key
+    n = passcode_len
+    passcode =  passcode_generator(k, p, n, complexity, disparity)
+    keypad = Keypad.new_keypad(k, p)
+
+    def obs_gen():
+        for _ in range(100):  # finite number of yields
+            yield Observation(
+                keypad=keypad.keypad.copy(),
+                key_selection=keypad.key_entry(target_passcode=passcode)
+            )
+            match shuffle_type:
+                case ShuffleTypes.FULL_SHUFFLE:
+                    keypad.full_shuffle()
+                case ShuffleTypes.SPLIT_SHUFFLE:
+                    keypad.split_shuffle()
+                case _:
+                    raise Exception(f"no shuffle type {shuffle_type}")
+
+    return obs_gen()
+
+def passcode_generator(k: int, p: int, n: int, c: int, d: int) -> list[int]:
+    assert n >= c
+    assert p*k >= c
+
+    assert n >= d
+    assert p >= d
+    passcode_prop = []
+    passcode_set = []
+    valid_choices = {i for i in range(k*p)}
+    repeat_set = n-d
+    repeat_prop = n-c
+    prop_added = set()
+    set_added = set()
+
+    for _ in range(n):
+        prop = random.choice(list(valid_choices))
+        prop_set = prop//p
+        passcode_prop.append(prop)
+        passcode_set.append(prop_set)
+
+        if prop in prop_added:
+            repeat_prop -= 1
+        if prop_set in set_added:
+            repeat_set -= 1
+
+        prop_added.add(prop)
+        set_added.add(prop_set)
+
+        if repeat_prop <= 0:
+            valid_choices -= prop_added
+
+        if repeat_set <= 0:
+            for el in valid_choices.copy():
+                if el // p in set_added:
+                    valid_choices.remove(el)
+
+    return passcode_prop
 
 
-def benchmark(
+def shuffle_benchmark(
         number_of_keys: int,
         properties_per_key: int,
         passcode_len: int,
@@ -21,44 +86,84 @@ def benchmark(
         run_count: int,
         complexity: int,
         disparity: int,
-        keypad: BaseKeypad,
-        file_path: Path = '../output',
+        shuffle_type: ShuffleTypes,
+        file_path: str = '../output',
         overwrite: bool = False
 ) -> Benchmark:
-    shuffle_type = str(type(keypad)).lower().split('.')[-1].replace("'>", "")
-    file_name = f"{shuffle_type}-{number_of_keys}-{properties_per_key}-{passcode_len}-{max_tries_before_lockout}-{complexity}-{disparity}-{run_count}.pkl"
-    full_path = Path(file_path) / "benchmark" / file_name
+    file_name = f"{shuffle_type.name.lower()}-{number_of_keys}-{properties_per_key}-{passcode_len}-{max_tries_before_lockout}-{complexity}-{disparity}-{run_count}.txt"
+    full_path = Path(file_path) / file_name
     if not overwrite and full_path.exists():
-        print(f"File exists: {full_path}")
-        with open(full_path, "rb") as fp:
-            return pickle.load(fp)
+        print(f"file exists {file_path}")
 
-    iterations_to_break = []
-    iterations_to_replay = []
-    for _ in tqdm(range(run_count)):
-        passcode = passcode_generator(number_of_keys, properties_per_key, passcode_len, complexity, disparity)
-        evilnkode = EvilNKode(
+        with open(full_path, "r") as fp:
+            runs = fp.readline()
+            runs = runs.split(',')
+            runs = [int(i) for i in runs]
+            return  Benchmark(
+                mean=mean(runs),
+                variance=variance(runs),
+                runs=runs
+            )
+    runs = []
+    for _ in range(run_count):
+        evilkode = Evilkode(
             observations=observations(
-                target_passcode=passcode,
-                keypad=keypad,
+                number_of_keys=number_of_keys,
+                properties_per_key=properties_per_key,
+                passcode_len=passcode_len,
+                complexity=complexity,
+                disparity=disparity,
+                shuffle_type=shuffle_type,
             ),
             number_of_keys=number_of_keys,
             properties_per_key=properties_per_key,
             passcode_len=passcode_len,
             max_tries_before_lockout=max_tries_before_lockout,
         )
-        evilout = evilnkode.run()
-        iterations_to_break.append(evilout.iterations_to_break)
-        iterations_to_replay.append(evilout.iterations_to_replay)
+        evilout = evilkode.run()
+        runs.append(evilout.iterations)
 
-    benchmark_result = Benchmark(
-        iterations_to_break=iterations_to_break,
-        iterations_to_replay=iterations_to_replay
+    full_path.parent.mkdir(parents=True, exist_ok=True)
+    with open(full_path, "w") as fp:
+       fp.write(",".join([str(i) for i in runs])),
+
+    return Benchmark(
+        mean=mean(runs),
+        variance=variance(runs),
+        runs=runs
     )
 
-    if file_path:
-        full_path.parent.mkdir(parents=True, exist_ok=True)
-        with open(full_path, "wb") as fp:
-            pickle.dump(benchmark_result, fp)
 
-    return benchmark_result
+def full_shuffle_benchmark(
+        number_of_keys: int,
+        properties_per_key: int,
+        passcode_len: int,
+        max_tries_before_lockout: int,
+        run_count: int,
+        complexity: int,
+        disparity: int,
+) -> Benchmark:
+    runs = []
+    for _ in range(run_count):
+        evilkode = Evilkode(
+            observations=observations(
+                number_of_keys=number_of_keys,
+                properties_per_key=properties_per_key,
+                passcode_len=passcode_len,
+                complexity=complexity,
+                disparity=disparity,
+                shuffle_type=ShuffleTypes.FULL_SHUFFLE,
+            ),
+            number_of_keys=number_of_keys,
+            properties_per_key=properties_per_key,
+            passcode_len=passcode_len,
+            max_tries_before_lockout=max_tries_before_lockout,
+        )
+        evilout = evilkode.run()
+        runs.append(evilout.iterations)
+
+    return Benchmark(
+        mean=mean(runs),
+        variance=variance(runs),
+        runs=runs
+    )

src/evilkode.py

@@ -12,19 +12,19 @@ class Observation:
     def property_list(self) -> list[set[int]]:
         return [set(self.keypad[idx]) for idx in self.key_selection]
 
-    @property
-    def flat_keypad(self) -> list[int]:
-        return [num for row in self.keypad for num in row]
-
 
 @dataclass
 class EvilOutput:
-    iterations_to_break: int
-    iterations_to_replay: int
+    possible_nkodes: list[list[int]]
+    iterations: int
+
+    @property
+    def number_of_possible_nkode(self):
+        return math.prod([len(el) for el in self.possible_nkodes])
 
 
 @dataclass
-class EvilNKode:
+class Evilkode:
     observations: Iterator[Observation]
     passcode_len: int
     number_of_keys: int
@@ -32,31 +32,17 @@ class EvilNKode:
     max_tries_before_lockout: int = 5
     possible_nkode = None
 
+
     def initialize(self):
         possible_values = set(range(self.number_of_keys * self.properties_per_key))
         self.possible_nkode = [possible_values.copy() for _ in range(self.passcode_len)]
 
     def run(self) -> EvilOutput:
         self.initialize()
-        iterations_to_replay = None
         for idx, obs in enumerate(self.observations):
-            if iterations_to_replay is None:
-                replay_possibilities = self.replay_attack(obs)
-                if replay_possibilities <= self.max_tries_before_lockout:
-                    iterations_to_replay = idx + 1
             if math.prod([len(el) for el in self.possible_nkode]) <= self.max_tries_before_lockout:
-                assert iterations_to_replay <= idx + 1
-                return EvilOutput(
-                    # possible_nkodes=[list(el) for el in self.possible_nkode],
-                    iterations_to_break=idx + 1,
-                    iterations_to_replay=iterations_to_replay
-                )
+                return EvilOutput(possible_nkodes=[list(el) for el in self.possible_nkode], iterations=idx+1)
             for jdx, props in enumerate(obs.property_list):
                 self.possible_nkode[jdx] = props.intersection(self.possible_nkode[jdx])
-        raise Exception("error in Evilkode, observations stopped yielding")
 
-    def replay_attack(self, obs: Observation) -> int:
-        possible_combos = 1
-        for el in self.possible_nkode:
-            possible_combos *= len({obs.flat_keypad.index(el2) // self.properties_per_key for el2 in el})
-        return possible_combos
+        raise Exception("error in Evilkode, observations stopped yielding")

src/keypad.py

@@ -0,0 +1,83 @@
+from dataclasses import dataclass
+
+import numpy as np
+
+@dataclass
+class Keypad:
+    keypad: np.ndarray
+    k: int # number of keys
+    p: int  # properties per key
+    keypad_cache: list #
+    max_cache_size: int = 100
+
+    @staticmethod
+    def new_keypad(k: int, p: int):
+        total_properties = k * p
+        array = np.arange(total_properties)
+        # Reshape into a 3x4 matrix
+        keypad = array.reshape(k, p)
+        set_view = keypad.T
+
+        for set_idx in set_view:
+            np.random.shuffle(set_idx)
+
+        return Keypad(keypad=set_view.T, k=k, p=p, keypad_cache=[])
+
+    def split_shuffle(self):
+        """
+        This is a modified split shuffle.
+        It doesn't shuffle the keys only the properties in the keys.
+        Shuffling the keys makes it hard for people to guess an nKode not a machine.
+        This split shuffle includes a cache to prevent the same configuration from being used.
+        This cache is not in any other implementation.
+        Testing suggests it's not necessary.
+        Getting the same keypad twice over 100 shuffles is very unlikely.
+        """
+        shuffled_sets = self._shuffle()
+        # Sort the shuffled sets by the first column
+        sorted_set = shuffled_sets[np.argsort(shuffled_sets[:, 0])]
+        while str(sorted_set) in self.keypad_cache:
+            # continue shuffling until we get a unique configuration
+            shuffled_sets = self._shuffle()
+            sorted_set = shuffled_sets[np.argsort(shuffled_sets[:, 0])]
+
+        self.keypad_cache.append(str(sorted_set))
+        self.keypad_cache = self.keypad_cache[:self.max_cache_size]
+        self.keypad = shuffled_sets
+
+
+    def _shuffle(self) -> np.ndarray:
+        column_permutation = np.random.permutation(self.p)
+        column_subset = column_permutation[:self.p // 2]
+        perm_indices = np.random.permutation(self.k)
+        shuffled_sets = self.keypad.copy()
+        shuffled_sets[:, column_subset] = shuffled_sets[perm_indices, :][:, column_subset]
+        return shuffled_sets
+
+    def full_shuffle(self):
+        shuffled_matrix = np.array([np.random.permutation(row) for row in self.keypad.T])
+        self.keypad = shuffled_matrix.T
+
+    def key_entry(self, target_passcode: list[int]) -> list[int]:
+        """
+        Given target_values, return the row indices they are in.
+        Assert that each element is >= 0 and < self.k * self.p.
+        """
+        # Convert the list to a NumPy array for vectorized checks
+        vals = np.array(target_passcode)
+
+        # Validate that each value is within the valid range
+        if np.any((vals < 0) | (vals >= self.k * self.p)):
+            raise ValueError("One or more values are out of the valid range.")
+
+        # Flatten the keypad to a 1D array
+        flat = self.keypad.flatten()
+
+        # Create an inverse mapping from value -> row index
+        inv_index = np.empty(self.k * self.p, dtype=int)
+        # Each value v is at position i in 'flat', so row = i // p
+        for i, v in enumerate(flat):
+            inv_index[v] = i // self.p
+
+        # Use the inverse mapping to get row indices for all target values
+        return inv_index[vals].tolist()

src/keypad/keypad.py

@@ -1,123 +0,0 @@
-from dataclasses import dataclass
-import numpy as np
-from src.keypad.tower_shuffle import TowerShuffle
-from abc import ABC, abstractmethod
-from typing import Self
-
-
-class BaseKeypad(ABC):
-    keypad: np.ndarray
-    k: int  # number of keys
-    p: int  # properties per key
-
-    @classmethod
-    def _build_keypad(cls, k: int, p: int) -> np.ndarray:
-        rng = np.random.default_rng()
-        total = k * p
-        array = np.arange(total)
-        keypad = array.reshape(k, p)
-        set_view = keypad.T.copy()
-        for set_idx in set_view:
-            rng.shuffle(set_idx)
-        return set_view.T
-
-    @classmethod
-    @abstractmethod
-    def new_keypad(cls, k: int, p: int) -> Self:
-        raise NotImplementedError
-
-    def key_entry(self, target_passcode: list[int]) -> list[int]:
-        vals = np.array(target_passcode)
-        if np.any((vals < 0) | (vals >= self.k * self.p)):
-            raise ValueError("One or more values are out of the valid range.")
-        flat = self.keypad.flatten()
-        inv_index = np.empty(self.k * self.p, dtype=int)
-        for i, v in enumerate(flat):
-            inv_index[v] = i // self.p
-        return inv_index[vals].tolist()
-
-    @abstractmethod
-    def shuffle(self):
-        pass
-
-    def keypad_mat(self) -> list[list[int]]:
-        return [el.tolist() for el in self.keypad]
-
-
-@dataclass
-class SlidingTowerShuffleKeypad(BaseKeypad):
-    keypad: np.ndarray
-    k: int  # number of keys
-    p: int  # properties per key
-    tower_shuffle: TowerShuffle
-
-    @classmethod
-    def new_keypad(cls, k: int, p: int) -> Self:
-        kp = cls._build_keypad(k, p)
-        return cls(keypad=kp, k=k, p=p, tower_shuffle=TowerShuffle.new(p))
-
-    def shuffle(self):
-        selected_positions = self.tower_shuffle.left_tower.tolist()
-        shift = np.random.randint(1, self.k)  # random int in [1, k-1]
-        new_key_idxs = np.roll(np.arange(self.k), shift)
-        shuffled_sets = self.keypad.copy()
-        shuffled_sets[:, selected_positions] = shuffled_sets[new_key_idxs, :][:, selected_positions]
-        self.keypad = shuffled_sets
-        self.tower_shuffle.shuffle()
-
-
-@dataclass
-class RandomShuffleKeypad(BaseKeypad):
-    keypad: np.ndarray
-    k: int  # number of keys
-    p: int  # properties per key
-
-    @classmethod
-    def new_keypad(cls, k: int, p: int) -> Self:
-        kp = cls._build_keypad(k, p)
-        return cls(keypad=kp, k=k, p=p)
-
-    def shuffle(self):
-        shuffled_matrix = np.array([np.random.permutation(row) for row in self.keypad.T])
-        self.keypad = shuffled_matrix.T
-
-
-@dataclass
-class RandomSplitShuffleKeypad(BaseKeypad):
-    keypad: np.ndarray
-    k: int  # number of keys
-    p: int  # properties per key
-
-    @classmethod
-    def new_keypad(cls, k: int, p: int) -> Self:
-        kp = cls._build_keypad(k, p)
-        return cls(keypad=kp, k=k, p=p)
-
-    def shuffle(self):
-        column_permutation = np.random.permutation(self.p)
-        column_subset = column_permutation[:self.p // 2]
-        new_key_idxs = np.random.permutation(self.k)
-        shuffled_sets = self.keypad.copy()
-        shuffled_sets[:, column_subset] = shuffled_sets[new_key_idxs, :][:, column_subset]
-        self.keypad = shuffled_sets
-
-
-@dataclass
-class SlidingSplitShuffleKeypad(BaseKeypad):
-    keypad: np.ndarray
-    k: int  # number of keys
-    p: int  # properties per key
-
-    @classmethod
-    def new_keypad(cls, k: int, p: int) -> Self:
-        kp = cls._build_keypad(k, p)
-        return cls(keypad=kp, k=k, p=p)
-
-    def shuffle(self):
-        selected_positions = np.random.permutation(self.p)
-        column_subset = selected_positions[:self.p // 2]
-        shift = np.random.randint(1, self.k)
-        new_key_idxs = np.roll(np.arange(self.k), shift)
-        shuffled_sets = self.keypad.copy()
-        shuffled_sets[:, column_subset] = shuffled_sets[new_key_idxs, :][:, column_subset]
-        self.keypad = shuffled_sets

src/keypad/tower_shuffle.py

@@ -1,82 +0,0 @@
-from dataclasses import dataclass
-import numpy as np
-
-
-@dataclass
-class Tower:
-    floors: list[np.ndarray]
-
-    def split_tower(self) -> tuple[np.ndarray, np.ndarray]:
-        discard = np.array([], dtype=int)
-        keep = np.array([], dtype=int)
-        balance = self.balance()
-        for idx, floor in enumerate(self.floors):
-            div = len(floor) // 2 + balance[idx]
-            floor_shuffle = np.random.permutation(len(floor))
-            keep = np.concatenate((keep, floor[floor_shuffle[:div]]))
-            discard = np.concatenate((discard, floor[floor_shuffle[div:]]))
-        diff = len(discard) - len(keep)
-        assert 0 <= diff <= 1
-        return keep, discard
-
-    def balance(self) -> list[int]:
-        odd_floors = np.array([idx for idx, el in enumerate(self.floors) if len(el) & 1])
-        balance = np.zeros(len(self.floors), dtype=int)
-        if len(odd_floors) == 0:
-            return balance.tolist()
-        shuffle = np.random.permutation(len(odd_floors))[:len(odd_floors) // 2]
-        odd_floors = odd_floors[shuffle]
-        balance[odd_floors] = 1
-        return balance.tolist()
-
-    def update_tower(self, keep: np.ndarray, other_discard: np.ndarray):
-        new_floors = []
-        for floor in self.floors:
-            new_floor = np.intersect1d(floor, keep)
-            if len(new_floor):
-                new_floors.append(new_floor)
-        self.floors = new_floors
-        self.floors.insert(0, other_discard)
-
-    def __str__(self):
-        str_val = ""
-        floor_numb = [i for i in reversed(range(len(self.floors)))]
-        for idx, val in enumerate(reversed(self.floors)):
-            str_val += f"Floor {floor_numb[idx]}: {val.tolist()}\n"
-        return str_val
-
-    def tolist(self) -> list[int]:
-        tower = []
-        for floor in self.floors:
-            tower.extend(floor.tolist())
-        return tower
-
-
-@dataclass
-class TowerShuffle:
-    # TODO: I don't think total_positions is used anywhere
-    total_positions: int
-    left_tower: Tower
-    right_tower: Tower
-
-    @classmethod
-    def new(cls, total_pos: int):
-        assert total_pos >= 3
-        rand_pos = np.random.permutation(total_pos)
-        return TowerShuffle(
-            total_positions=total_pos,
-            left_tower=Tower(floors=[rand_pos[:total_pos // 2]]),
-            right_tower=Tower(floors=[rand_pos[total_pos // 2:]]),
-        )
-
-    def shuffle(self):
-        left_keep, left_discard = self.left_tower.split_tower()
-        right_keep, right_discard = self.right_tower.split_tower()
-        self.left_tower.update_tower(left_keep, right_discard)
-        self.right_tower.update_tower(right_keep, left_discard)
-
-    def __str__(self):
-        return f"""Left Tower:
-{self.left_tower}
-Right Tower:
-{self.right_tower}"""

src/utils.py

@@ -1,66 +1,7 @@
-import random
 from math import factorial, comb
 
-from src.evilnkode import Observation
-from src.keypad.keypad import BaseKeypad
-from typing import Iterator
-
-
 def total_valid_nkode_states(k: int, p: int) -> int:
    return factorial(k) ** (p-1)
 
-
 def total_shuffle_states(k: int, p: int) -> int:
     return comb((p-1), (p-1) // 2) * factorial(k)
-
-
-def observations(target_passcode: list[int], keypad: BaseKeypad, number_of_observations: int = 100) -> Iterator[
-    Observation]:
-    def obs():
-        for _ in range(number_of_observations):
-            yield Observation(
-                keypad=keypad.keypad_mat(),
-                key_selection=keypad.key_entry(target_passcode=target_passcode)
-            )
-            keypad.shuffle()
-
-    return obs()
-
-
-def passcode_generator(k: int, p: int, n: int, c: int, d: int) -> list[int]:
-    assert n >= c
-    assert p * k >= c
-
-    assert n >= d
-    assert p >= d
-    passcode_prop = []
-    passcode_set = []
-    valid_choices = {i for i in range(k * p)}
-    repeat_set = n - d
-    repeat_prop = n - c
-    prop_added = set()
-    set_added = set()
-
-    for _ in range(n):
-        prop = random.choice(list(valid_choices))
-        prop_set = prop // p
-        passcode_prop.append(prop)
-        passcode_set.append(prop_set)
-
-        if prop in prop_added:
-            repeat_prop -= 1
-        if prop_set in set_added:
-            repeat_set -= 1
-
-        prop_added.add(prop)
-        set_added.add(prop_set)
-
-        if repeat_prop <= 0:
-            valid_choices -= prop_added
-
-        if repeat_set <= 0:
-            for el in valid_choices.copy():
-                if el // p in set_added:
-                    valid_choices.remove(el)
-
-    return passcode_prop

tests/test_benchmark.py

@@ -1,14 +1,6 @@
-from src.utils import passcode_generator
-from src.keypad.keypad import (
-    RandomShuffleKeypad,
-    RandomSplitShuffleKeypad,
-    SlidingTowerShuffleKeypad,
-    SlidingSplitShuffleKeypad
-)
-from src.benchmark import benchmark
+from src.benchmark import passcode_generator
 import pytest
 
-
 @pytest.mark.parametrize(
     "k, p, n, c, d, runs",
     [
@@ -21,26 +13,3 @@ def test_passcode_generator(k, p, n, c, d, runs):
         passcode_sets = [el//p for el in passcode]
         assert  c <= len(set(passcode))
         assert d <= len(set(passcode_sets))
-
-
-@pytest.mark.parametrize(
-    "number_of_keys,properties_per_key,passcode_len,max_tries_before_lockout,complexity,disparity,run_count,keypad",
-    [
-        (6, 8, 4, 5, 4, 4, 100, RandomShuffleKeypad),
-        (6, 8, 4, 5, 4, 4, 100, RandomSplitShuffleKeypad),
-        (6, 8, 4, 5, 4, 4, 100, SlidingSplitShuffleKeypad),
-        (6, 8, 4, 5, 4, 4, 100, SlidingTowerShuffleKeypad),
-    ]
-)
-def test_benchmark(number_of_keys, properties_per_key, passcode_len, max_tries_before_lockout, complexity, disparity,
-                   run_count, keypad):
-    benchmark(
-        number_of_keys=number_of_keys,
-        properties_per_key=properties_per_key,
-        passcode_len=passcode_len,
-        max_tries_before_lockout=max_tries_before_lockout,
-        run_count=run_count,
-        complexity=complexity,
-        disparity=disparity,
-        keypad=keypad.new_keypad(number_of_keys, properties_per_key)
-    )

tests/test_evilkode.py

@@ -1,34 +1,45 @@
 import random
 import pytest
 
-from src.evilnkode import EvilNKode
-from src.keypad.keypad import (
-    RandomShuffleKeypad,
-)
-from src.utils import observations
+from src.evilkode import Evilkode, Observation
+from src.keypad import Keypad
 
 
 @pytest.fixture
-def passcode(number_of_keys, properties_per_key, passcode_len):
-    return [random.randint(0, number_of_keys * properties_per_key - 1) for _ in range(passcode_len)]
+def observations(number_of_keys, properties_per_key, passcode_len):
+    k = number_of_keys
+    p = properties_per_key
+    n = passcode_len
+    nkode = [random.randint(0, k*p-1) for _ in range(n)]
+    keypad = Keypad.new_keypad(k, p)
+
+    def obs_gen():
+        for _ in range(100):  # finite number of yields
+            yield Observation(
+                keypad=keypad.keypad.copy(),
+                key_selection=keypad.key_entry(target_passcode=nkode)
+            )
+            keypad.split_shuffle()
+
+    return obs_gen()
+
 
 
 @pytest.mark.parametrize(
     "number_of_keys, properties_per_key, passcode_len",
     [
-        (5, 4, 4),  # Test case 1
+        (5, 3, 4),  # Test case 1
         (10, 5, 6),  # Test case 2
         (8, 4, 5),   # Test case 3
     ]
 )
-def test_evilkode(number_of_keys, properties_per_key, passcode_len, passcode):
-    keypad = RandomShuffleKeypad.new_keypad(number_of_keys, properties_per_key)
-    obs = observations(passcode, keypad)
-    evilkode = EvilNKode(
-        observations=obs,
+def test_evilkode(number_of_keys, properties_per_key, passcode_len, observations):
+    evilkode = Evilkode(
+        observations=observations,
         number_of_keys=number_of_keys,
         properties_per_key=properties_per_key,
         passcode_len=passcode_len,
     )
+
     evilout = evilkode.run()
-    assert evilout.iterations_to_break > 1
+    assert evilout.iterations > 1

tests/test_keypad.py

@@ -1,34 +1,31 @@
-import pytest
 import numpy as np
-from src.keypad.keypad import (
-    RandomSplitShuffleKeypad,
-    RandomShuffleKeypad,
-    SlidingSplitShuffleKeypad,
-    SlidingTowerShuffleKeypad,
-)
 
+from src.keypad import Keypad
 
-def test_key_entry():
-    keypad = RandomShuffleKeypad(
+def test_keypad():
+    keypad = Keypad(
         keypad=np.array([
             [8, 9, 10, 11],
             [0, 5, 2, 3],
             [4, 1, 6,7]
-        ]), k=3, p=4)
+        ]), k= 3, p=4, keypad_cache=[])
+
     assert keypad.key_entry([8, 5, 6, 11]) == [0,1,2,0]
 
+def test_split_shuffle():
+    p = 4  # properties_per_key
+    k = 3  # number_of_keys
+    keypad = Keypad.new_keypad(k, p)
+    print(keypad.keypad)
+    keypad.split_shuffle()
+    print(keypad.keypad)
 
-@pytest.mark.parametrize(
-    "keypad_type, number_of_keys, properties_per_key",
-    [
-        (RandomShuffleKeypad, 3, 4),
-        (RandomSplitShuffleKeypad, 3, 4),
-        (SlidingTowerShuffleKeypad, 3, 4),
-        (SlidingSplitShuffleKeypad, 3, 4),
-    ]
-)
-def test_keypad_shuffle(keypad_type, number_of_keys, properties_per_key):
-    keypad = keypad_type.new_keypad(number_of_keys, properties_per_key)
+
+def test_full_shuffle():
+    p = 4  # properties_per_key
+    k = 3  # number_of_keys
+    keypad = Keypad.new_keypad(k, p)
     print(keypad.keypad)
-    keypad.shuffle()
+    keypad.full_shuffle()
     print(keypad.keypad)
+

tests/test_tower_shuffle.py

@@ -1,9 +0,0 @@
-from src.keypad.tower_shuffle import TowerShuffle
-
-
-def test_tower_shuffle():
-    tower = TowerShuffle.new(13)
-    print(tower)
-    for _ in range(100):
-        tower.shuffle()
-        print(tower)