mirror of
https://github.com/rsmarples/dhcpcd.git
synced 2024-11-25 11:03:29 +08:00
c73ed17160
Implement RFC 2104 HMAC Keyed Hashing. Implement RFC 3118 Authentication for DHCP Messages and RFC 3315 Authentication options.
34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
/*
|
|
* 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 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.
|
|
*/
|
|
|
|
#ifndef MD5_H_
|
|
#define MD5_H_
|
|
|
|
#define MD5_DIGEST_LENGTH 16
|
|
#define MD5_BLOCK_LENGTH 64
|
|
|
|
typedef struct MD5Context {
|
|
uint32_t state[4]; /* state (ABCD) */
|
|
uint64_t count; /* number of bits, modulo 2^64 (lsb first) */
|
|
unsigned char buffer[MD5_BLOCK_LENGTH]; /* input buffer */
|
|
} MD5_CTX;
|
|
|
|
void MD5Init(MD5_CTX *);
|
|
void MD5Update(MD5_CTX *, const unsigned char *, size_t);
|
|
void MD5Final(unsigned char[MD5_DIGEST_LENGTH], MD5_CTX *);
|
|
#endif
|