# cryptofun

Crypto algorithms from scratch. Academic purposes only.


## RSA
https://en.wikipedia.org/wiki/RSA_(cryptosystem)#
- [x] GenerateKeyPair
- [x] Encrypt
- [x] Decrypt
- [x] Blind
- [x] Blind Signature
- [x] Unblind Signature
- [x] Verify Signature
- [x] Homomorphic Multiplication

## Paillier
https://en.wikipedia.org/wiki/Paillier_cryptosystem
- [x] GenerateKeyPair
- [x] Encrypt
- [x] Decrypt
- [x] Homomorphic Addition

## Shamir Secret Sharing
https://en.wikipedia.org/wiki/Shamir%27s_Secret_Sharing
- [x] create secret sharing from NumOfSecretsNeed, NumOfShares, RandPointP, SecretToShare
- [x] Lagrange Interpolation to restore the secret from the shares

## ECC