| /* |
| * This code implements the MD5 message-digest algorithm. |
| * The algorithm is due to Ron Rivest. This code was |
| * written by Colin Plumb in 1993, no copyright is claimed. |
| * This code is in the public domain; do with it what you wish. |
| * |
| * 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 MHD_MD5Init, call MHD_MD5Update as |
| * needed on buffers full of bytes, and then call MHD_MD5Final, which |
| * will fill a supplied 16-byte array with the digest. |
| */ |
| |
| #ifndef MHD_MD5_H |
| #define MHD_MD5_H |
| |
| #include "platform.h" |
| |
| #define MD5_BLOCK_SIZE 64 |
| #define MD5_DIGEST_SIZE 16 |
| #define MD5_DIGEST_STRING_LENGTH (MD5_DIGEST_SIZE * 2 + 1) |
| |
| struct MD5Context |
| { |
| uint32_t state[4]; /* state */ |
| uint64_t count; /* number of bits, mod 2^64 */ |
| uint8_t buffer[MD5_BLOCK_SIZE]; /* input buffer */ |
| }; |
| |
| /* |
| * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious |
| * initialization constants. |
| */ |
| void MHD_MD5Init (struct MD5Context *ctx); |
| |
| /* |
| * Update context to reflect the concatenation of another buffer full |
| * of bytes. |
| */ |
| void MHD_MD5Update (struct MD5Context *ctx, const unsigned char *input, size_t |
| len); |
| |
| /* |
| * Pad pad to 64-byte boundary with the bit pattern |
| * 1 0* (64-bit count of bits processed, MSB-first) |
| */ |
| void MD5Pad (struct MD5Context *ctx); |
| |
| /* |
| * Final wrapup--call MD5Pad, fill in digest and zero out ctx. |
| */ |
| void MHD_MD5Final (unsigned char digest[MD5_DIGEST_SIZE], struct |
| MD5Context *ctx); |
| |
| /* |
| * The core of the MD5 algorithm, this alters an existing MD5 hash to |
| * reflect the addition of 16 longwords of new data. MHD_MD5Update blocks |
| * the data and converts bytes into longwords for this routine. |
| */ |
| void MD5Transform (uint32_t state[4], const uint8_t block[MD5_BLOCK_SIZE]); |
| |
| #endif /* !MHD_MD5_H */ |