(chibi crypto rsa)

RSA public key cryptography implementation.

`(rsa-key-gen-from-primes bit-length p q . o)`

`(rsa-key-gen [bit-length])`

`(rsa-pub-key priv-key)`

Returns a copy of the given key with the private key, if any, removed.

`(pkcs1-pad bv)`

`(pkcs1-unpad bv)`

`(rsa-encrypt pub-key msg)`

Encrypts msg for the given public key pub-key. msg may be an integer or bytevector, in which case the result is of the same type, or a string, in which case the string is first coerced to a utf8 encoded bytevector.

`(rsa-decrypt priv-key cipher)`

Decrypts cipher using the given private key priv-key. cipher may be an integer or bytevector, in which case the result is of the same type, or a string, in which case the string is first coerced to a utf8 encoded bytevector.

`(rsa-sign priv-key msg)`

Signs msg using the given private key priv-key.

`(rsa-verify pub-key sig)`

Returns the verified (decrypted) message for the signature sig.

`(rsa-verify? pub-key msg sig)`

Returns true iff sig is a valid signature of msg for the given public key pub-key.