PMK.c File Reference

Implementation of HASH algorithms.

Copyright (c) 2016-2018 Microchip Technology Inc. and its subsidiaries.

#include "driver/include/m2m_types.h"
#include "drv_hash/crypto.h"

Macros
#define	A_SHA_DIGEST_LEN   20
#define	F1(x, y, z)   (((x) & (y)) | (~(x) & (z)))
#define	F2(x, y, z)   (((x) & (z)) | ((y) & ~(z)))
#define	F3(x, y, z)   ((x) ^ (y) ^ (z))
#define	F4(x, y, z)   (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
#define	F5(x, y, z)   ((y) ^ ((x) | ~(z)))
#define	SHA1_CH(x, y, z)   F1(x,y,z)
	SHA1 specific defines. More...
#define	SHA1_INERMEDIATE(A, B, C, D, E, W, K)
#define	SHA1_MAJ(x, y, z)   F4(x,y,z)
#define	SHA256_CAP_SIGMA0(x)   (SHA_ROTR(x, 2) ^ SHA_ROTR(x,13) ^ SHA_ROTR(x,22))
#define	SHA256_CAP_SIGMA1(x)   (SHA_ROTR(x, 6) ^ SHA_ROTR(x,11) ^ SHA_ROTR(x,25))
#define	SHA256_CH(x, y, z)   (z ^ (x & (y ^ z)))
#define	SHA256_MAJ(x, y, z)   ((x & y) | (z & (x | y)))
#define	SHA256_SMALL_SIGMA0(x)   (SHA_ROTR(x, 7) ^ SHA_ROTR(x,18) ^ SHA_SHR(x, 3))
	SHA256 specific defines. More...
#define	SHA256_SMALL_SIGMA1(x)   (SHA_ROTR(x,17) ^ SHA_ROTR(x,19) ^ SHA_SHR(x,10))
#define	SHA_PAD_BYTE   0x80
#define	SHA_PARITY(x, y, z)   F3(x,y,z)

Functions
void	DRV_hmac_sha1 (uint8 *pu8Key, uint32 u32KeyLength, uint8 *pu8Data, uint32 u32DataLength, uint8 *pu8Digest)
void	DRV_HMAC_Vector (tpfHash fpHash, uint8 *pu8Key, uint32 u32KeyLength, tstrBuffer *pstrInData, uint8 u8NumInputs, uint8 *pu8Out)
	Perform the HMAC operation on a given vector of data streams using the hash function passed to the DRV_HMAC_Vector. More...
void	DRV_SHA1_Hash (tstrHashContext *pstrSha1Context, uint8 u8Flags, uint8 *pu8Data, uint32 u32DataLength, uint8 *pu8Digest)
uint8	pbkdf2_sha1 (uint8 *key, uint8 key_len, uint8 *data, uint8 data_len, uint8 *digest)
	This function runs the PBKDF2 on the data with a given key. More...
uint8	pbkdf2_sha1_f (uint8 *key, uint8 key_length, uint8 *data, uint32 data_len, uint32 iterations, uint32 count, uint8 *digest)
	This function iterates the hashing of digest as per the key. More...
void	SHA1ProcessBlock (uint32 *pu32Sha1State, const uint8 *pu8MessageBlock)
void	Sha_HashFinish (tstrHashContext *pstrHashCxt, uint8 *pu8LengthPadding)
void	Sha_HashUpdate (tstrHashContext *pstrHashCxt, uint8 *pu8Data, uint32 u32DataLength)

#define A_SHA_DIGEST_LEN   20

Referenced by pbkdf2_sha1(), and pbkdf2_sha1_f().

#define F1	(		x,
			y,
			z
	)		(((x) & (y)) | (~(x) & (z)))

#define F2	(		x,
			y,
			z
	)		(((x) & (z)) | ((y) & ~(z)))

#define F3	(		x,
			y,
			z
	)		((x) ^ (y) ^ (z))

#define F4	(		x,
			y,
			z
	)		(((x) & (y)) | ((x) & (z)) | ((y) & (z)))

#define F5	(		x,
			y,
			z
	)		((y) ^ ((x) | ~(z)))

#define SHA1_CH	(		x,
			y,
			z
	)		F1(x,y,z)

SHA1 specific defines.

Referenced by SHA1ProcessBlock().

#define SHA1_INERMEDIATE	(		A,
			B,
			C,
			D,
			E,
			W,
			K
	)

Value:

{   \
    W += SHA_ROTL(A,5) + E  + K;    \
    E = D;      \
    D = C;      \
    C = SHA_ROTL(B,30); \
    B = A;              \
    A = W;              \
}

Referenced by SHA1ProcessBlock().

#define SHA1_MAJ	(		x,
			y,
			z
	)		F4(x,y,z)

Referenced by SHA1ProcessBlock().

#define SHA256_CAP_SIGMA0

(

x

)

(SHA_ROTR(x, 2) ^ SHA_ROTR(x,13) ^ SHA_ROTR(x,22))

#define SHA256_CAP_SIGMA1

(

x

)

(SHA_ROTR(x, 6) ^ SHA_ROTR(x,11) ^ SHA_ROTR(x,25))

#define SHA256_CH	(		x,
			y,
			z
	)		(z ^ (x & (y ^ z)))

#define SHA256_MAJ	(		x,
			y,
			z
	)		((x & y) | (z & (x | y)))

#define SHA256_SMALL_SIGMA0

(

x

)

(SHA_ROTR(x, 7) ^ SHA_ROTR(x,18) ^ SHA_SHR(x, 3))

SHA256 specific defines.

#define SHA256_SMALL_SIGMA1

(

x

)

(SHA_ROTR(x,17) ^ SHA_ROTR(x,19) ^ SHA_SHR(x,10))

#define SHA_PAD_BYTE   0x80

Referenced by Sha_HashFinish().

#define SHA_PARITY	(		x,
			y,
			z
	)		F3(x,y,z)

Referenced by SHA1ProcessBlock().

void DRV_hmac_sha1	(	uint8 *	pu8Key,
		uint32	u32KeyLength,
		uint8 *	pu8Data,
		uint32	u32DataLength,
		uint8 *	pu8Digest
	)

References DRV_HMAC_Vector(), DRV_SHA1_Hash(), tstrBuffer::pu8Data, and tstrBuffer::u16BufferSize.

Referenced by pbkdf2_sha1_f().

void DRV_HMAC_Vector	(	tpfHash	fpHash,
		uint8 *	pu8Key,
		uint32	u32KeyLength,
		tstrBuffer *	pstrInData,
		uint8	u8NumInputs,
		uint8 *	pu8Out
	)

Perform the HMAC operation on a given vector of data streams using the hash function passed to the DRV_HMAC_Vector.

References M2M_MEMSET, NULL, SHA_BLOCK_SIZE, SHA_FLAGS_FINISH, SHA_FLAGS_FULL_HASH, SHA_FLAGS_INIT, SHA_FLAGS_UPDATE, SHA_MAX_DIGEST_SIZE, and tstrHashContext::u8DigestSize.

Referenced by DRV_hmac_sha1().

void DRV_SHA1_Hash	(	tstrHashContext *	pstrSha1Context,
		uint8	u8Flags,
		uint8 *	pu8Data,
		uint32	u32DataLength,
		uint8 *	pu8Digest
	)

References tstrHashContext::au32HashState, tstrHashContext::fpHash, M2M_MEMSET, NULL, PUTU32, SHA1_DIGEST_SIZE, SHA1ProcessBlock(), SHA_BLOCK_SIZE, SHA_FLAGS_FINISH, SHA_FLAGS_INIT, SHA_FLAGS_UPDATE, Sha_HashFinish(), Sha_HashUpdate(), tstrHashContext::u32TotalLength, tstrHashContext::u8BlockSize, and tstrHashContext::u8DigestSize.

Referenced by DRV_hmac_sha1().

uint8 pbkdf2_sha1	(	uint8 *	key,
		uint8	key_len,
		uint8 *	data,
		uint8	data_len,
		uint8 *	digest
	)

This function runs the PBKDF2 on the data with a given key.

To obtain the PSK from the password, PBKDF2 is run on SSID (data) with password (key).

References A_SHA_DIGEST_LEN, and pbkdf2_sha1_f().

Referenced by m2m_wifi_connect(), and m2m_wifi_enable_ap().

uint8 pbkdf2_sha1_f	(	uint8 *	key,
		uint8	key_length,
		uint8 *	data,
		uint32	data_len,
		uint32	iterations,
		uint32	count,
		uint8 *	digest
	)

This function iterates the hashing of digest as per the key.

Returns

1 on success, 0 on failure.

References A_SHA_DIGEST_LEN, DRV_hmac_sha1(), and m2m_memcpy().

Referenced by pbkdf2_sha1().

void SHA1ProcessBlock	(	uint32 *	pu32Sha1State,
		const uint8 *	pu8MessageBlock
	)

References GETU32, SHA1_CH, SHA1_INERMEDIATE, SHA1_MAJ, SHA_PARITY, and SHA_ROTL.

Referenced by DRV_SHA1_Hash(), and SHA1_HashSW().

void Sha_HashFinish	(	tstrHashContext *	pstrHashCxt,
		uint8 *	pu8LengthPadding
	)

References tstrHashContext::au32HashState, tstrHashContext::au8CurrentBlock, tstrHashContext::fpHash, M2M_MEMCPY, M2M_MEMSET, NULL, SHA_PAD_BYTE, tstrHashContext::u32TotalLength, and tstrHashContext::u8BlockSize.

Referenced by DRV_SHA1_Hash(), MD4_Hash(), MD5_HashSW(), SHA1_HashSW(), SHA224_HashSW(), SHA256_HashSW(), and SHA512_HashSW().

void Sha_HashUpdate	(	tstrHashContext *	pstrHashCxt,
		uint8 *	pu8Data,
		uint32	u32DataLength
	)

References tstrHashContext::au32HashState, tstrHashContext::au8CurrentBlock, tstrHashContext::fpHash, M2M_MEMCPY, NULL, tstrHashContext::u32TotalLength, and tstrHashContext::u8BlockSize.

Referenced by DRV_SHA1_Hash(), MD4_Hash(), MD5_HashSW(), SHA1_HashSW(), SHA224_HashSW(), SHA256_HashSW(), and SHA512_HashSW().