Crypto.PubKey.RSA.OAEP

RSA OAEP mode http://en.wikipedia.org/wiki/Optimal_asymmetric_encryption_padding

Documentation

data OAEPParams hash seed output

Parameters for OAEP encryption/decryption

Constructors

OAEPParams

Fields

• oaepHash :: hash

  Hash function to use.

• oaepMaskGenAlg :: MaskGenAlgorithm seed output

  Mask Gen algorithm to use.

• oaepLabel :: Maybe ByteString

  Optional label prepended to message.

defaultOAEPParams :: (ByteArrayAccess seed, ByteArray output, HashAlgorithm hash) => hash -> OAEPParams hash seed output

Default Params with a specified hash function

OAEP encryption

encryptWithSeed

Arguments

:: HashAlgorithm hash

=> ByteString

Seed

-> OAEPParams hash ByteString ByteString

OAEP params to use for encryption

-> PublicKey

Public key.

-> ByteString

Message to encrypt

-> Either Error ByteString

Encrypt a message using OAEP with a predefined seed.

encrypt

Arguments

:: (HashAlgorithm hash, MonadRandom m)

=> OAEPParams hash ByteString ByteString

OAEP params to use for encryption.

-> PublicKey

Public key.

-> ByteString

Message to encrypt

-> m (Either Error ByteString)

Encrypt a message using OAEP

OAEP decryption

decrypt

Arguments

:: HashAlgorithm hash

=> Maybe Blinder

Optional blinder

-> OAEPParams hash ByteString ByteString

OAEP params to use for decryption

-> PrivateKey

Private key

-> ByteString

Cipher text

-> Either Error ByteString

Decrypt a ciphertext using OAEP

When the signature is not in a context where an attacker could gain information from the timing of the operation, the blinder can be set to None.

If unsure always set a blinder or use decryptSafer

decryptSafer

Arguments

:: (HashAlgorithm hash, MonadRandom m)

=> OAEPParams hash ByteString ByteString

OAEP params to use for decryption

-> PrivateKey

Private key

-> ByteString

Cipher text

-> m (Either Error ByteString)

Decrypt a ciphertext using OAEP and by automatically generating a blinder.