#include <stddef.h>
#include <stdint.h>

Include dependency graph for bfcodec.h:

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Functions
BFCODEC_API C_BLOWFISH *	bfcodec_init (void)
	Allocate and initialise a Blowfish codec with pi-derived P and S boxes.

BFCODEC_API void	bfcodec_expand_key (C_BLOWFISH blf, const uint8_t key, size_t key_len)
	Expand key into the codec state (XOR P with key bytes, then expand via encrypt).

BFCODEC_API void	bfcodec_decrypt (C_BLOWFISH blf, uint8_t data, size_t len, const uint8_t iv[8])
	Decrypt data in place using CBC with the given 8-byte IV.

BFCODEC_API void	bfcodec_encrypt (C_BLOWFISH blf, uint8_t data, size_t len, const uint8_t iv[8])
	Encrypt data in place using CBC with the given 8-byte IV.

Function Documentation

◆ bfcodec_decrypt()

BFCODEC_API void bfcodec_decrypt	(	C_BLOWFISH *	blf,
		uint8_t *	data,
		size_t	len,
		const uint8_t	iv[8]
	)

Decrypt data in place using CBC with the given 8-byte IV.

Parameters

blf	Codec instance with key already expanded.
data	Buffer to decrypt in place.
len	Length of data in bytes; must be a multiple of 8.
iv	Initialisation vector; exactly 8 bytes.

BFCODEC_API void bfcodec_encrypt	(	C_BLOWFISH *	blf,
		uint8_t *	data,
		size_t	len,
		const uint8_t	iv[8]
	)

Encrypt data in place using CBC with the given 8-byte IV.

Parameters

blf	Codec instance with key already expanded.
data	Buffer to encrypt in place.
len	Length of data in bytes; must be a multiple of 8.
iv	Initialisation vector; exactly 8 bytes.

BFCODEC_API void bfcodec_expand_key	(	C_BLOWFISH *	blf,
		const uint8_t *	key,
		size_t	key_len
	)

Expand key into the codec state (XOR P with key bytes, then expand via encrypt).

Parameters

blf	Codec instance from bfcodec_init().
key	Key bytes; key_len may be any positive length.
key_len	Length of key in bytes; key bytes are used big-endian in 32-bit chunks.

BFCODEC_API C_BLOWFISH * bfcodec_init ( void )

Allocate and initialise a Blowfish codec with pi-derived P and S boxes.