typedef struct bfish bfish_t
A blowfish-structure which must be initiated with bfish_init()
before use.
typedef struct bfblk bfblk_t
A blowfish-block that is used for en-/decrypting data.
BFISH_BLOCKSZ 8 BFISH_MAX_KEY_LEN 56 BFISH_MIN_KEY_LEN 4
size_t bfish_buflen(len)
Returns the required buffer length for encryption of data. In
other words, this macro returns the closest upper multiple of
eight.
void bfish_deblock(bfish_t *bf, bfblk_t *blk)
Decrypts a blowfish-block of eight bytes. [bf] is a initiated
blowfish-structure and [blk] is a blowfish-block of bytes.
void bfish_enblock(bfish_t *bf, bfblk_t *blk)
Encrypts a blowfish-block of eight bytes. [bf] is a initiated
blowfish-structure and [blk] is a blowfish-block of bytes.
void bfish_decrypt(bfish_t *bf, void *buf, size_t len)
This is a convenience-function that decrypts a buffer of [len]
number of bytes. [bf] is a pointer to a initiated blowfish-
structure and [buf] is a pointer to the data to be encrypted.
[len] must be a multipler of eight, if [buf] is a correct blow-
fish encrypted string of bytes.
This functions decrypts to the buffer in place.
void bfish_encrypt(bfish_t *bf, const void *buf, size_t len)
This is a convenience-function that encrypts a buffer of [len]
number of bytes. [bf] is a pointer to a initiated blowfish-
structure and [buf] is a pointer to the data to be encrypted.
If [len] is -1, buf is assumed to be a null-terminated string,
and strlen() will be used to calculate the length of [buf].
This function encrypts to the buffer in place, so it MUST be of
enough space to hold the encrypted data (which might be more
than [len]). If encrypting a string of thirteen bytes, the
buffer needs to be at least sixteen bytes long, (see
the function bfish_buflen).
void bfish_init(bfish_t *bf, const void *key, size_t len)
Initiates a bluefish-structure for de-/encoding. [bf] is a
pointer to a allocated blowfish-structure. [key] is the byte-
string which will be used to do the encryption with. [len] is
the number of bytes at [key] that should be used.
If [len] is -1, [key] is assumed to be a null-terminated
string, and strlen() will be used to calculate its length.
size_t bfish_read(bfblk_t *blk, const void *buf, size_t len)
Reads max eight bytes (lesser if [len] < 8) from [buf] and puts
it in the blowfish-buffer at [blk]. The block are appended with
zeroes if [len] < 8.
void bfish_write(const bfblk_t *blk, void *buf)
Writes the eight byte long blowfish-block [blk] to the buffer
at [buf].