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Minor changes to SHA hash functions

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This commit is contained in:
Ondrej Zajicek (work)
2015-11-24 13:47:28 +01:00
parent 12d752ef24
commit 5126380bea
7 changed files with 518 additions and 521 deletions
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72
lib/sha1.h
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@@ -17,70 +17,70 @@
#include "nest/bird.h"
#define SHA1_SIZE 20 /* Size of the SHA1 hash in its binary representation */
#define SHA1_HEX_SIZE 41 /* Buffer length for a string containing SHA1 in hexadecimal format. */
#define SHA1_BLOCK_SIZE 64 /* SHA1 splits input to blocks of this size. */
/*
* Internal SHA1 state.
* You should use it just as an opaque handle only.
*/
struct sha1_context {
u32 h0,h1,h2,h3,h4;
u32 nblocks;
byte buf[64];
int count;
} ;
u32 h0, h1, h2, h3, h4;
byte buf[SHA1_BLOCK_SIZE];
uint nblocks;
uint count;
};
void sha1_init(struct sha1_context *hd); /* Initialize new algorithm run in the @hd context. **/
void sha1_init(struct sha1_context *ctx); /* Initialize new algorithm run in the @ctx context. **/
/*
* Push another @inlen bytes of data pointed to by @inbuf onto the
* SHA1 hash currently in @hd. You can call this any times you want on
* the same hash (and you do not need to reinitialize it by
* @sha1_init()). It has the same effect as concatenating all the data
* together and passing them at once.
* Push another @len bytes of data pointed to by @buf onto the SHA1 hash
* currently in @ctx. You can call this any times you want on the same hash (and
* you do not need to reinitialize it by @sha1_init()). It has the same effect
* as concatenating all the data together and passing them at once.
*/
void sha1_update(struct sha1_context *hd, const byte *inbuf, uint inlen);
void sha1_update(struct sha1_context *ctx, const byte *buf, uint len);
/*
* No more @sha1_update() calls will be done. This terminates the hash
* and returns a pointer to it.
* No more @sha1_update() calls will be done. This terminates the hash and
* returns a pointer to it.
*
* Note that the pointer points into data in the @hd context. If it ceases
* to exist, the pointer becomes invalid.
*
* To convert the hash to its usual hexadecimal representation, see
* <<string:mem_to_hex()>>.
* Note that the pointer points into data in the @ctx context. If it ceases to
* exist, the pointer becomes invalid.
*/
byte *sha1_final(struct sha1_context *hd);
byte *sha1_final(struct sha1_context *ctx);
/*
* A convenience one-shot function for SHA1 hash.
* It is equivalent to this snippet of code:
* A convenience one-shot function for SHA1 hash. It is equivalent to this
* snippet of code:
*
* sha1_context hd;
* sha1_init(&hd);
* sha1_update(&hd, buffer, length);
* memcpy(outbuf, sha1_final(&hd), SHA1_SIZE);
* sha1_context ctx;
* sha1_init(&ctx);
* sha1_update(&ctx, buffer, length);
* memcpy(outbuf, sha1_final(&ctx), SHA1_SIZE);
*/
void sha1_hash_buffer(byte *outbuf, const byte *buffer, uint length);
/*
* SHA1 HMAC message authentication. If you provide @key and @data,
* the result will be stored in @outbuf.
* SHA1 HMAC message authentication. If you provide @key and @data, the result
* will be stored in @outbuf.
*/
void sha1_hmac(byte *outbuf, const byte *key, uint keylen, const byte *data, uint datalen);
/*
* The HMAC also exists in a stream version in a way analogous to the
* plain SHA1. Pass this as a context.
* The HMAC also exists in a stream version in a way analogous to the plain
* SHA1. Pass this as a context.
*/
struct sha1_hmac_context {
struct sha1_context ictx;
struct sha1_context octx;
};
void sha1_hmac_init(struct sha1_hmac_context *hd, const byte *key, uint keylen); /* Initialize HMAC with context @hd and the given key. See sha1_init(). */
void sha1_hmac_update(struct sha1_hmac_context *hd, const byte *data, uint datalen); /* Hash another @datalen bytes of data. See sha1_update(). */
byte *sha1_hmac_final(struct sha1_hmac_context *hd); /* Terminate the HMAC and return a pointer to the allocated hash. See sha1_final(). */
void sha1_hmac_init(struct sha1_hmac_context *ctx, const byte *key, uint keylen); /* Initialize HMAC with context @ctx and the given key. See sha1_init(). */
void sha1_hmac_update(struct sha1_hmac_context *ctx, const byte *data, uint datalen); /* Hash another @datalen bytes of data. See sha1_update(). */
byte *sha1_hmac_final(struct sha1_hmac_context *ctx); /* Terminate the HMAC and return a pointer to the allocated hash. See sha1_final(). */
#define SHA1_SIZE 20 /* Size of the SHA1 hash in its binary representation **/
#define SHA1_HEX_SIZE 41 /* Buffer length for a string containing SHA1 in hexadecimal format. **/
#define SHA1_BLOCK_SIZE 64 /* SHA1 splits input to blocks of this size. **/
#endif /* _BIRD_SHA1_H_ */