Crypto.Noise.Cipher

Classes

class Cipher c where

Typeclass for ciphers.

Associated Types

data Ciphertext c :: *

Represents encrypted data containing an authentication tag.

data SymmetricKey c :: *

Represents a symmetric key.

data Nonce c :: *

Represents a nonce.

Methods

cipherName :: proxy c -> ScrubbedBytes

Returns the name of the cipher. This is used when generating the handshake name.

cipherEncrypt :: SymmetricKey c -> Nonce c -> AssocData -> Plaintext -> Ciphertext c

Encrypts data.

cipherDecrypt :: SymmetricKey c -> Nonce c -> AssocData -> Ciphertext c -> Maybe Plaintext

Decrypts data. Will fail catastrophically if the authentication tag is invalid.

cipherZeroNonce :: Nonce c

Returns a Nonce set to zero.

cipherIncNonce :: Nonce c -> Nonce c

Increments a nonce.

cipherBytesToSym :: ScrubbedBytes -> SymmetricKey c

Imports a symmetric key. If the input is greater than 32 bytes, it is truncated.

cipherTextToBytes :: Ciphertext c -> ScrubbedBytes

Exports a Ciphertext. The authentication tag follows the actual ciphertext.

cipherBytesToText :: ScrubbedBytes -> Ciphertext c

Imports a Ciphertext.

Instances

Cipher AESGCM

Cipher ChaChaPoly1305

Types

newtype Plaintext

Represents plaintext which can be encrypted.

Constructors

Plaintext ScrubbedBytes

Instances

IsString Plaintext

newtype AssocData

Represents the associated data for AEAD.

Constructors

AssocData ScrubbedBytes