Module Cryptokit.Block

module Block: sig  end

The Block module provides classes that implements popular block ciphers, chaining modes, and wrapping of a block cipher as a general transform or as a hash function. The classes can be composed in a Lego-like fashion, facilitating the integration of new block ciphers, modes, etc.

class type block_cipher = object  end

Abstract interface for a block cipher.

Deriving transforms and hashes from block ciphers

class cipher : block_cipher -> Cryptokit.transform

Wraps a block cipher as a general transform.

class cipher_padded_encrypt : Cryptokit.Padding.scheme ->
       block_cipher -> Cryptokit.transform

Like Cryptokit.Block.cipher, but performs padding on the input data as specified by the first argument.

class cipher_padded_decrypt : Cryptokit.Padding.scheme ->
       block_cipher -> Cryptokit.transform

Like Cryptokit.Block.cipher, but removes padding on the output data as specified by the first argument.

class mac : ?iv:string ->
       ?pad:Cryptokit.Padding.scheme ->
       block_cipher -> Cryptokit.hash

Build a MAC (keyed hash function) from the given block cipher.

class mac_final_triple : ?iv:string ->
       ?pad:Cryptokit.Padding.scheme ->
       block_cipher ->
       block_cipher ->
       block_cipher -> Cryptokit.hash

Build a MAC (keyed hash function) from the given block ciphers c1, c2 and c3.

Some block ciphers: AES, DES, triple DES

class aes_encrypt : string -> block_cipher

The AES block cipher, in encryption mode.

class aes_decrypt : string -> block_cipher

The AES block cipher, in decryption mode.

class des_encrypt : string -> block_cipher

The DES block cipher, in encryption mode.

class des_decrypt : string -> block_cipher

The DES block cipher, in decryption mode.

class triple_des_encrypt : string -> block_cipher

The Triple-DES block cipher, in encryption mode.

class triple_des_decrypt : string -> block_cipher

The Triple-DES block cipher, in decryption mode.

Chaining modes

class cbc_encrypt : ?iv:string -> block_cipher -> block_cipher

Add Cipher Block Chaining (CBC) to the given block cipher in encryption mode.

class cbc_decrypt : ?iv:string -> block_cipher -> block_cipher

Add Cipher Block Chaining (CBC) to the given block cipher in decryption mode.

class cfb_encrypt : ?iv:string ->
       int -> block_cipher -> block_cipher

Add Cipher Feedback Block (CFB) to the given block cipher in encryption mode.

class cfb_decrypt : ?iv:string ->
       int -> block_cipher -> block_cipher

Add Cipher Feedback Block (CFB) to the given block cipher in decryption mode.

class ofb : ?iv:string ->
       int -> block_cipher -> block_cipher

Add Output Feedback Block (OFB) to the given block cipher.