NaCl.Sign.Internal

Internals of crypto_sign.

Documentation

type SecretKey a = SizedByteArray CRYPTO_SIGN_SECRETKEYBYTES a

Secret key that can be used for creating a signature.

This type is parametrised by the actual data type that contains bytes. This can be, for example, a ByteString, but, since this is a secret key, it is better to use ScrubbedBytes.

toSecretKey :: ByteArrayAccess bytes => bytes -> Maybe (SecretKey bytes)

Convert bytes to a secret key.

type PublicKey a = SizedByteArray CRYPTO_SIGN_PUBLICKEYBYTES a

Public key that can be used for verifyiing a signature.

This type is parametrised by the actual data type that contains bytes. This can be, for example, a ByteString.

toPublicKey :: ByteArrayAccess bytes => bytes -> Maybe (PublicKey bytes)

Convert bytes to a public key.

keypair :: IO (PublicKey ByteString, SecretKey ScrubbedBytes)

Generate a new SecretKey together with its PublicKey.

Note: this function is not thread-safe (since the underlying C function is not thread-safe both in Sodium and in NaCl)! Either make sure there are no concurrent calls or see Crypto.Init in crypto-sodium to learn how to make this function thread-safe.

create

Arguments

:: (ByteArrayAccess skBytes, ByteArrayAccess pt, ByteArray ct)

=> SecretKey skBytes

Signer’s secret key

-> pt

Message to sign

-> IO ct

Sign a message.

open

Arguments

:: (ByteArrayAccess pkBytes, ByteArray pt, ByteArrayAccess ct)

=> PublicKey pkBytes

Signer’s public key

-> ct

Signed message

-> IO (Maybe pt)

Verify the signature of a signed message.