moth/libctf/md5.h

43 lines
1.4 KiB
C

#ifndef MD5_H
#define MD5_H
#include <stdint.h>
/* The following tests optimise behaviour on little-endian
machines, where there is no need to reverse the byte order
of 32 bit words in the MD5 computation. By default,
HIGHFIRST is defined, which indicates we're running on a
big-endian (most significant byte first) machine, on which
the byteReverse function in md5.c must be invoked. However,
byteReverse is coded in such a way that it is an identity
function when run on a little-endian machine, so calling it
on such a platform causes no harm apart from wasting time.
If the platform is known to be little-endian, we speed
things up by undefining HIGHFIRST, which defines
byteReverse as a null macro. Doing things in this manner
insures we work on new platforms regardless of their byte
order. */
#define HIGHFIRST
#ifdef __i386__
#undef HIGHFIRST
#endif
#define MD5_DIGEST_LEN 16
#define MD5_HEXDIGEST_LEN (MD5_DIGEST_LEN * 2)
struct md5_context {
uint32_t buf[4];
uint32_t bits[2];
uint8_t in[64];
};
void md5_init(struct md5_context *ctx);
void md5_update(struct md5_context *ctx, const uint8_t *buf, size_t len);
void md5_final(struct md5_context *ctx, uint8_t *digest);
void md5_digest(const uint8_t *buf, size_t buflen, uint8_t *digest);
void md5_hexdigest(const uint8_t *buf, size_t buflen, char *hexdigest);
#endif /* !MD5_H */