sha1.c File Reference

#include "common.h"
#include "sha1.h"
#include "crypto.h"

Functions
int	hmac_sha1_vector (const u8 *key, size_t key_len, size_t num_elem, const u8 *addr[], const size_t *len, u8 *mac)
	hmac_sha1_vector - HMAC-SHA1 over data vector (RFC 2104) @key: Key for HMAC operations @key_len: Length of the key in bytes @num_elem: Number of elements in the data vector @addr: Pointers to the data areas @len: Lengths of the data blocks @mac: Buffer for the hash (20 bytes) Returns: 0 on success, -1 on failure More...
int	hmac_sha1 (const u8 *key, size_t key_len, const u8 *data, size_t data_len, u8 *mac)
	hmac_sha1 - HMAC-SHA1 over data buffer (RFC 2104) @key: Key for HMAC operations @key_len: Length of the key in bytes @data: Pointers to the data area @data_len: Length of the data area @mac: Buffer for the hash (20 bytes) Returns: 0 on success, -1 of failure More...
int	sha1_prf (const u8 *key, size_t key_len, const char *label, const u8 *data, size_t data_len, u8 *buf, size_t buf_len)
	sha1_prf - SHA1-based Pseudo-Random Function (PRF) (IEEE 802.11i, 8.5.1.1) @key: Key for PRF @key_len: Length of the key in bytes @label: A unique label for each purpose of the PRF @data: Extra data to bind into the key @data_len: Length of the data @buf: Buffer for the generated pseudo-random key @buf_len: Number of bytes of key to generate Returns: 0 on success, -1 of failure More...

Function Documentation

hmac_sha1()

int hmac_sha1	(	const u8 *	key,
		size_t	key_len,
		const u8 *	data,
		size_t	data_len,
		u8 *	mac
	)

hmac_sha1 - HMAC-SHA1 over data buffer (RFC 2104) @key: Key for HMAC operations @key_len: Length of the key in bytes @data: Pointers to the data area @data_len: Length of the data area @mac: Buffer for the hash (20 bytes) Returns: 0 on success, -1 of failure

References data, and hmac_sha1_vector().

hmac_sha1_vector()

int hmac_sha1_vector	(	const u8 *	key,
		size_t	key_len,
		size_t	num_elem,
		const u8 *	addr[],
		const size_t *	len,
		u8 *	mac
	)

hmac_sha1_vector - HMAC-SHA1 over data vector (RFC 2104) @key: Key for HMAC operations @key_len: Length of the key in bytes @num_elem: Number of elements in the data vector @addr: Pointers to the data areas @len: Lengths of the data blocks @mac: Buffer for the hash (20 bytes) Returns: 0 on success, -1 on failure

References len, os_memcpy, os_memset, SHA1_MAC_LEN, and sha1_vector().

Referenced by hmac_sha1(), and sha1_prf().

sha1_prf()

int sha1_prf	(	const u8 *	key,
		size_t	key_len,
		const char *	label,
		const u8 *	data,
		size_t	data_len,
		u8 *	buf,
		size_t	buf_len
	)

sha1_prf - SHA1-based Pseudo-Random Function (PRF) (IEEE 802.11i, 8.5.1.1) @key: Key for PRF @key_len: Length of the key in bytes @label: A unique label for each purpose of the PRF @data: Extra data to bind into the key @data_len: Length of the data @buf: Buffer for the generated pseudo-random key @buf_len: Number of bytes of key to generate Returns: 0 on success, -1 of failure

This function is used to derive new, cryptographically separate keys from a given key (e.g., PMK in IEEE 802.11i).

References data, hmac_sha1_vector(), len, os_memcpy, os_strlen, and SHA1_MAC_LEN.