SHA1 Hashing and digest functions

SHA1 Hashing checking and HMAC Functions. More...

Functions
void	sha1sum2 (unsigned char *buff, const void *data, unsigned long len, const void *data2, unsigned long len2)
	Calculate the SHA1 hash accross 2 data chunks. More...
void	sha1sum (unsigned char *buff, const void *data, unsigned long len)
	Calculate the SHA1 hash. More...
int	sha1cmp (unsigned char *digest1, unsigned char *digest2)
	Compare two SHA1 hashes. More...
void	sha1hmac (unsigned char *buff, const void *data, unsigned long len, const void *key, unsigned long klen)
	Hash Message Authentication Codes (HMAC) SHA1. More...

Detailed Description

SHA1 Hashing checking and HMAC Functions.

Function Documentation

int sha1cmp	(	unsigned char *	digest1,
		unsigned char *	digest2
	)

Compare two SHA1 hashes.

Parameters

digest1	Digest to compare.
digest2	Digest to compare.

Returns

0 on equality.

Definition at line 233 of file util.c.

                                                                   {
    return (_digest_cmp(digest1, digest2, 20));
}

void sha1hmac	(	unsigned char *	buff,
		const void *	data,
		unsigned long	len,
		const void *	key,
		unsigned long	klen
	)

Hash Message Authentication Codes (HMAC) SHA1.

Parameters

buff	HMAC returned in this buffer (20 bytes).
data	Data to sign.
len	Length of data.
key	Key to signwith.
klen	Length of key.

Definition at line 302 of file util.c.

References sha1sum2().

                                                                                                                    {
    _hmac(buff, data, len, key, klen, sha1sum2, 20);
}

void sha1sum	(	unsigned char *	buff,
		const void *	data,
		unsigned long	len
	)

Calculate the SHA1 hash.

Parameters

buff	buffer to place the hash (20 bytes).
data	First data chunk to calculate.
len	Length of data.

Definition at line 173 of file util.c.

References sha1sum2().

                                                                              {
    sha1sum2(buff, data, len, NULL, 0);
}

void sha1sum2	(	unsigned char *	buff,
		const void *	data,
		unsigned long	len,
		const void *	data2,
		unsigned long	len2
	)

Calculate the SHA1 hash accross 2 data chunks.

Parameters

buff	buffer to place the hash (20 bytes).
data	First data chunk to calculate.
len	Length of data.
data2	Second data chunk to calculate.
len2	Length of data2.

Definition at line 156 of file util.c.

Referenced by get_ip6_addrprefix(), sha1hmac(), and sha1sum().

                                                                                                                      {
    SHA_CTX c;

    SHA_Init(&c);
    SHA_Update(&c, data, len);
    if (data2) {
        SHA_Update(&c, data2, len2);
    }
    SHA_Final(buff, &c);
}