implement api

core/api/user.go

@@ -0,0 +1,46 @@
+package api
+
+import (
+	m "go-nkode/models"
+	"go-nkode/util"
+)
+
+type User struct {
+	Username           string
+	EncipheredPasscode m.EncipheredNKode
+	UserKeys           UserCipherKeys
+	Interface          UserInterface
+	Renew              bool
+}
+
+func (u *User) DecipherMask(setVals []uint64, passcodeLen int) ([]uint64, error) {
+	return u.UserKeys.DecipherMask(u.EncipheredPasscode.Mask, setVals, passcodeLen)
+}
+
+func (u *User) RenewKeys(setXor []uint64, attrXor []uint64) error {
+	u.Renew = true
+	var err error
+	u.UserKeys.SetKey, err = util.XorLists(setXor, u.UserKeys.SetKey)
+	if err != nil {
+		return err
+	}
+	u.UserKeys.AlphaKey, err = util.XorLists(attrXor, u.UserKeys.AlphaKey)
+	return err
+}
+
+func (u *User) RefreshPasscode(passcodeAttrIdx []int, customerAttributes CustomerAttributes) error {
+	newKeys, err := NewUserCipherKeys(customerAttributes.KeypadSize, customerAttributes.SetVals, u.UserKeys.MaxNKodeLen)
+	if err != nil {
+		return err
+	}
+
+	encipheredPasscode, err := newKeys.EncipherNKode(passcodeAttrIdx, customerAttributes)
+	if err != nil {
+		return err
+	}
+
+	u.UserKeys = *newKeys
+	u.EncipheredPasscode = *encipheredPasscode
+	u.Renew = false
+	return nil
+}