#include "config.h"#include <isc/assertions.h>#include <isc/md5.h>#include <isc/platform.h>#include <isc/string.h>#include <isc/types.h>#include <isc/util.h>Go to the source code of this file.
Defines | |
| #define | MD5STEP(f, w, x, y, z, in, s) (w += f(x,y,z) + in, w = (w<<s | w>>(32-s)) + x) |
| #define | F1(x, y, z) (z ^ (x & (y ^ z))) |
| #define | F2(x, y, z) F1(z, x, y) |
| #define | F3(x, y, z) (x ^ y ^ z) |
| #define | F4(x, y, z) (y ^ (x | ~z)) |
Functions | |
| static void | byteSwap (isc_uint32_t *buf, unsigned words) |
| void | isc_md5_init (isc_md5_t *ctx) |
| void | isc_md5_invalidate (isc_md5_t *ctx) |
| static void | transform (isc_uint32_t buf[4], isc_uint32_t const in[16]) |
| void | isc_md5_update (isc_md5_t *ctx, const unsigned char *buf, unsigned int len) |
| void | isc_md5_final (isc_md5_t *ctx, unsigned char *digest) |
Equivalent code is available from RSA Data Security, Inc. This code has been tested against that, and is equivalent, except that you don't need to include two pages of legalese with every copy.
To compute the message digest of a chunk of bytes, declare an MD5Context structure, pass it to MD5Init, call MD5Update as needed on buffers full of bytes, and then call MD5Final, which will fill a supplied 16-byte array with the digest.
Definition in file md5.c.
| #define F1 | ( | x, | |||
| y, | |||||
| z | ) | (z ^ (x & (y ^ z))) |
The four core functions - F1 is optimized somewhat
Definition at line 157 of file md5.c.
Referenced by transform().
| #define F2 | ( | x, | |||
| y, | |||||
| z | ) | F1(z, x, y) |
The four core functions - F1 is optimized somewhat
Definition at line 158 of file md5.c.
Referenced by transform().
| #define F3 | ( | x, | |||
| y, | |||||
| z | ) | (x ^ y ^ z) |
The four core functions - F1 is optimized somewhat
Definition at line 159 of file md5.c.
Referenced by transform().
| #define F4 | ( | x, | |||
| y, | |||||
| z | ) | (y ^ (x | ~z)) |
The four core functions - F1 is optimized somewhat
Definition at line 160 of file md5.c.
Referenced by transform().
This is the central step in the MD5 algorithm.
Definition at line 164 of file md5.c.
Referenced by transform().
| static void byteSwap | ( | isc_uint32_t * | buf, | |
| unsigned | words | |||
| ) | [static] |
| void isc_md5_init | ( | isc_md5_t * | ctx | ) |
Start MD5 accumulation. Set bit count to 0 and buffer to mysterious initialization constants.
Definition at line 138 of file md5.c.
References isc_md5_t::buf, and isc_md5_t::bytes.
Referenced by ATF_TC_BODY(), compute_secret(), hmacmd5_fromdns(), isc_hmacmd5_init(), and isc_hmacmd5_sign().
| void isc_md5_invalidate | ( | isc_md5_t * | ctx | ) |
| static void transform | ( | isc_uint32_t | buf[4], | |
| isc_uint32_t const | in[16] | |||
| ) | [static] |
The core of the MD5 algorithm, this alters an existing MD5 hash to reflect the addition of 16 longwords of new data. MD5Update blocks the data and converts bytes into longwords for this routine.
Definition at line 173 of file md5.c.
References F1, F2, F3, F4, and MD5STEP.
Referenced by isc_md5_final(), isc_md5_update(), and isc_sha1_update().
| void isc_md5_update | ( | isc_md5_t * | ctx, | |
| const unsigned char * | buf, | |||
| unsigned int | len | |||
| ) |
Update context to reflect the concatenation of another buffer full of bytes.
Definition at line 260 of file md5.c.
References isc_md5_t::buf, isc_md5_t::bytes, byteSwap(), isc_md5_t::in, and transform().
Referenced by ATF_TC_BODY(), compute_secret(), hmacmd5_fromdns(), isc_hmacmd5_init(), isc_hmacmd5_sign(), and isc_hmacmd5_update().
| void isc_md5_final | ( | isc_md5_t * | ctx, | |
| unsigned char * | digest | |||
| ) |
Final wrapup - pad to 64-byte boundary with the bit pattern 1 0* (64-bit count of bits processed, MSB-first)
Definition at line 299 of file md5.c.
References isc_md5_t::buf, isc_md5_t::bytes, byteSwap(), isc_md5_t::in, and transform().
Referenced by ATF_TC_BODY(), compute_secret(), hmacmd5_fromdns(), isc_hmacmd5_init(), and isc_hmacmd5_sign().