Block ciphers

Data Structures
struct	blockCipher
	Holds information and pointers to code specific to each cipher. More...
struct	blockCipherContext
	Holds a pointer to a blockcipher as well as its parameters. More...
Files
file	aes.h
	AES block cipher, as specified by NIST FIPS 197.
file	beecrypt.h
	BeeCrypt API, headers.
file	blockmode.h
	Blockcipher operation modes.
file	blockpad.h
	Blockcipher padding algorithms.
file	blowfish.h
	Blowfish block cipher.
Typedefs
typedef int(*	blockCipherSetup )(blockCipherParam *, const byte *, size_t, cipherOperation)
	Prototype definition for a setup function.
typedef void	blockCipherParam
	Placeholder type definition for blockcipher parameters.
typedef int(*	blockCipherSetIV )(blockCipherParam *, const byte *)
	Prototype definition for an initialization vector setup function.
typedef int(*	blockCipherSetCTR )(blockCipherParam *, const byte *, size_t)
	Prototype definition for an initialization vector setup function.
typedef int(*	blockCipherRawcrypt )(blockCipherParam *, uint32_t *, const uint32_t *)
	Prototype for a raw encryption or decryption function.
typedef int(*	blockCipherModcrypt )(blockCipherParam *, uint32_t *, const uint32_t *, unsigned int)
	Prototype for a encryption or decryption function which operates on multiple blocks in a certain mode.
Enumerations
enum	cipherOperation { NOCRYPT, ENCRYPT, DECRYPT }
	Specifies whether to perform encryption or decryption. More...

---

Typedef Documentation

int(* blockCipherModcrypt)(blockCipherParam *bp, uint32_t *dst, const uint32_t *src, unsigned int nblocks)

Prototype for a encryption or decryption function which operates on multiple blocks in a certain mode.

Parameters:

	bp	The blockcipher's parameters.
	dst	The ciphertext address; must be aligned on 32-bit boundary.
	src	The cleartext address; must be aligned on 32-bit boundary.
	nblocks	The number of blocks to process.

Return values:

	0	on success.
	-1	on failure.

void blockCipherParam

Placeholder type definition for blockcipher parameters.

See also:

aesParam, blowfishParam.

int(* blockCipherRawcrypt)(blockCipherParam *bp, uint32_t *dst, const uint32_t *src)

Prototype for a raw encryption or decryption function.

Parameters:

	bp	The blockcipher's parameters.
	dst	The ciphertext address; must be aligned on 32-bit boundary.
	src	The cleartext address; must be aligned on 32-bit boundary.

Return values:

	0	on success.
	-1	on failure.

int(* blockCipherSetCTR)(blockCipherParam *bp, const byte *nivz, size_t counter)

Prototype definition for an initialization vector setup function.

Parameters:

	bp	The blockcipher's parameters.
	nivz	The concatenation of the Nonce, IV and padding Zero bytes.
	counter	The blockciphers' counter value.

Note:

nivz length must be equal to the cipher's block size.

Return values:

	0	on success.
	-1	on failure.

int(* blockCipherSetIV)(blockCipherParam *bp, const byte *iv)

Prototype definition for an initialization vector setup function.

Parameters:

	bp	The blockcipher's parameters.
	iv	The blockciphers' IV value.

Note:

iv length must be equal to the cipher's block size.

Return values:

	0	on success.
	-1	on failure.

typedef int(* blockCipherSetup)(blockCipherParam *, const byte *, size_t, cipherOperation)

Prototype definition for a setup function.

---

Enumeration Type Documentation

enum cipherOperation

Specifies whether to perform encryption or decryption.

Enumerator:

NOCRYPT
ENCRYPT
DECRYPT