forked from Minki/linux
Staging: rt28x0: remove unused SHA256 code
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Bartlomiej Zolnierkiewicz
Greg Kroah-Hartman
parent
46ff62398c
commit
ef3e746815
@ -47,42 +47,7 @@ static const UINT32 SHA1_K[4] = {
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static const UINT32 SHA1_DefaultHashValue[5] = {
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0x67452301UL, 0xefcdab89UL, 0x98badcfeUL, 0x10325476UL, 0xc3d2e1f0UL
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};
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#endif /* SHA1_SUPPORT */
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#ifdef SHA256_SUPPORT
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/* SHA256 functions */
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#define Zsigma_256_0(x) (ROTR32(x,2) ^ ROTR32(x,13) ^ ROTR32(x,22))
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#define Zsigma_256_1(x) (ROTR32(x,6) ^ ROTR32(x,11) ^ ROTR32(x,25))
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#define Sigma_256_0(x) (ROTR32(x,7) ^ ROTR32(x,18) ^ SHR(x,3))
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#define Sigma_256_1(x) (ROTR32(x,17) ^ ROTR32(x,19) ^ SHR(x,10))
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/* SHA256 constants */
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static const UINT32 SHA256_K[64] = {
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0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL,
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0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL,
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0xd807aa98UL, 0x12835b01UL, 0x243185beUL, 0x550c7dc3UL,
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0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, 0xc19bf174UL,
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0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
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0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL,
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0x983e5152UL, 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL,
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0xc6e00bf3UL, 0xd5a79147UL, 0x06ca6351UL, 0x14292967UL,
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0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, 0x53380d13UL,
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0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
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0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL,
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0xd192e819UL, 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL,
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0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL,
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0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL,
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0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
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0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
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};
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static const UINT32 SHA256_DefaultHashValue[8] = {
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0x6a09e667UL, 0xbb67ae85UL, 0x3c6ef372UL, 0xa54ff53aUL,
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0x510e527fUL, 0x9b05688cUL, 0x1f83d9abUL, 0x5be0cd19UL
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};
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#endif /* SHA256_SUPPORT */
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#ifdef SHA1_SUPPORT
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/*
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========================================================================
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Routine Description:
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@ -310,226 +275,4 @@ VOID RT_SHA1 (
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} /* End of RT_SHA1 */
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#endif /* SHA1_SUPPORT */
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#ifdef SHA256_SUPPORT
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/*
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========================================================================
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Routine Description:
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Initial SHA256_CTX_STRUC
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Arguments:
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pSHA_CTX Pointer to SHA256_CTX_STRUC
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Return Value:
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None
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Note:
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None
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========================================================================
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*/
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VOID SHA256_Init (
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IN SHA256_CTX_STRUC *pSHA_CTX)
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{
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NdisMoveMemory(pSHA_CTX->HashValue, SHA256_DefaultHashValue,
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sizeof(SHA256_DefaultHashValue));
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NdisZeroMemory(pSHA_CTX->Block, SHA256_BLOCK_SIZE);
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pSHA_CTX->MessageLen = 0;
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pSHA_CTX->BlockLen = 0;
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} /* End of SHA256_Init */
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/*
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========================================================================
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Routine Description:
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SHA256 computation for one block (512 bits)
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Arguments:
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pSHA_CTX Pointer to SHA256_CTX_STRUC
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Return Value:
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None
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Note:
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None
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========================================================================
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*/
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VOID SHA256_Hash (
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IN SHA256_CTX_STRUC *pSHA_CTX)
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{
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UINT32 W_i,t;
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UINT32 W[64];
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UINT32 a,b,c,d,e,f,g,h,T1,T2;
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/* Prepare the message schedule, {W_i}, 0 < t < 15 */
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NdisMoveMemory(W, pSHA_CTX->Block, SHA256_BLOCK_SIZE);
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for (W_i = 0; W_i < 16; W_i++)
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W[W_i] = cpu2be32(W[W_i]); /* Endian Swap */
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/* End of for */
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/* SHA256 hash computation */
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/* Initialize the working variables */
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a = pSHA_CTX->HashValue[0];
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b = pSHA_CTX->HashValue[1];
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c = pSHA_CTX->HashValue[2];
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d = pSHA_CTX->HashValue[3];
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e = pSHA_CTX->HashValue[4];
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f = pSHA_CTX->HashValue[5];
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g = pSHA_CTX->HashValue[6];
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h = pSHA_CTX->HashValue[7];
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/* 64 rounds */
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for (t = 0;t < 64;t++) {
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if (t > 15) /* Prepare the message schedule, {W_i}, 16 < t < 63 */
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W[t] = Sigma_256_1(W[t-2]) + W[t-7] + Sigma_256_0(W[t-15]) + W[t-16];
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/* End of if */
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T1 = h + Zsigma_256_1(e) + Ch(e,f,g) + SHA256_K[t] + W[t];
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T2 = Zsigma_256_0(a) + Maj(a,b,c);
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h = g;
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g = f;
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f = e;
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e = d + T1;
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d = c;
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c = b;
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b = a;
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a = T1 + T2;
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} /* End of for */
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/* Compute the i^th intermediate hash value H^(i) */
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pSHA_CTX->HashValue[0] += a;
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pSHA_CTX->HashValue[1] += b;
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pSHA_CTX->HashValue[2] += c;
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pSHA_CTX->HashValue[3] += d;
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pSHA_CTX->HashValue[4] += e;
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pSHA_CTX->HashValue[5] += f;
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pSHA_CTX->HashValue[6] += g;
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pSHA_CTX->HashValue[7] += h;
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NdisZeroMemory(pSHA_CTX->Block, SHA256_BLOCK_SIZE);
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pSHA_CTX->BlockLen = 0;
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} /* End of SHA256_Hash */
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/*
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========================================================================
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Routine Description:
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The message is appended to block. If block size > 64 bytes, the SHA256_Hash
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will be called.
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Arguments:
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pSHA_CTX Pointer to SHA256_CTX_STRUC
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message Message context
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messageLen The length of message in bytes
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Return Value:
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None
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Note:
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None
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========================================================================
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*/
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VOID SHA256_Append (
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IN SHA256_CTX_STRUC *pSHA_CTX,
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IN const UINT8 Message[],
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IN UINT MessageLen)
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{
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UINT appendLen = 0;
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UINT diffLen = 0;
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while (appendLen != MessageLen) {
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diffLen = MessageLen - appendLen;
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if ((pSHA_CTX->BlockLen + diffLen) < SHA256_BLOCK_SIZE) {
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NdisMoveMemory(pSHA_CTX->Block + pSHA_CTX->BlockLen,
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Message + appendLen, diffLen);
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pSHA_CTX->BlockLen += diffLen;
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appendLen += diffLen;
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}
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else
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{
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NdisMoveMemory(pSHA_CTX->Block + pSHA_CTX->BlockLen,
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Message + appendLen, SHA256_BLOCK_SIZE - pSHA_CTX->BlockLen);
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appendLen += (SHA256_BLOCK_SIZE - pSHA_CTX->BlockLen);
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pSHA_CTX->BlockLen = SHA256_BLOCK_SIZE;
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SHA256_Hash(pSHA_CTX);
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} /* End of if */
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} /* End of while */
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pSHA_CTX->MessageLen += MessageLen;
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} /* End of SHA256_Append */
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/*
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========================================================================
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Routine Description:
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1. Append bit 1 to end of the message
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2. Append the length of message in rightmost 64 bits
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3. Transform the Hash Value to digest message
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Arguments:
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pSHA_CTX Pointer to SHA256_CTX_STRUC
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Return Value:
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digestMessage Digest message
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Note:
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None
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========================================================================
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*/
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VOID SHA256_End (
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IN SHA256_CTX_STRUC *pSHA_CTX,
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OUT UINT8 DigestMessage[])
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{
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UINT index;
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UINT64 message_length_bits;
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/* Append bit 1 to end of the message */
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NdisFillMemory(pSHA_CTX->Block + pSHA_CTX->BlockLen, 1, 0x80);
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/* 55 = 64 - 8 - 1: append 1 bit(1 byte) and message length (8 bytes) */
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if (pSHA_CTX->BlockLen > 55)
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SHA256_Hash(pSHA_CTX);
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/* End of if */
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/* Append the length of message in rightmost 64 bits */
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message_length_bits = pSHA_CTX->MessageLen*8;
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message_length_bits = cpu2be64(message_length_bits);
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NdisMoveMemory(&pSHA_CTX->Block[56], &message_length_bits, 8);
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SHA256_Hash(pSHA_CTX);
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/* Return message digest, transform the UINT32 hash value to bytes */
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for (index = 0; index < 8;index++)
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pSHA_CTX->HashValue[index] = cpu2be32(pSHA_CTX->HashValue[index]);
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/* End of for */
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NdisMoveMemory(DigestMessage, pSHA_CTX->HashValue, SHA256_DIGEST_SIZE);
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} /* End of SHA256_End */
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/*
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========================================================================
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Routine Description:
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SHA256 algorithm
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Arguments:
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message Message context
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messageLen The length of message in bytes
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Return Value:
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digestMessage Digest message
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Note:
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None
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========================================================================
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*/
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VOID RT_SHA256 (
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IN const UINT8 Message[],
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IN UINT MessageLen,
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OUT UINT8 DigestMessage[])
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{
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SHA256_CTX_STRUC sha_ctx;
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NdisZeroMemory(&sha_ctx, sizeof(SHA256_CTX_STRUC));
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SHA256_Init(&sha_ctx);
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SHA256_Append(&sha_ctx, Message, MessageLen);
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SHA256_End(&sha_ctx, DigestMessage);
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} /* End of RT_SHA256 */
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#endif /* SHA256_SUPPORT */
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/* End of crypt_sha2.c */
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@ -57,17 +57,6 @@ VOID HMAC_SHA1 (
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IN UINT MACLen);
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#endif /* SHA1_SUPPORT */
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#ifdef SHA256_SUPPORT
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#define HMAC_SHA256_SUPPORT
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VOID HMAC_SHA256 (
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IN const UINT8 Key[],
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IN UINT KeyLen,
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IN const UINT8 Message[],
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IN UINT MessageLen,
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OUT UINT8 MAC[],
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IN UINT MACLen);
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#endif /* SHA256_SUPPORT */
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#ifdef MD5_SUPPORT
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#define HMAC_MD5_SUPPORT
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VOID HMAC_MD5 (
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@ -50,7 +50,6 @@
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/* Algorithm options */
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#define SHA1_SUPPORT
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#define SHA256_SUPPORT
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#ifdef SHA1_SUPPORT
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#define SHA1_BLOCK_SIZE 64 /* 512 bits = 64 bytes */
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@ -79,31 +78,4 @@ VOID RT_SHA1 (
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OUT UINT8 DigestMessage[]);
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#endif /* SHA1_SUPPORT */
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#ifdef SHA256_SUPPORT
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#define SHA256_BLOCK_SIZE 64 /* 512 bits = 64 bytes */
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#define SHA256_DIGEST_SIZE 32 /* 256 bits = 32 bytes */
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typedef struct _SHA256_CTX_STRUC {
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UINT32 HashValue[8]; /* 8 = (SHA256_DIGEST_SIZE / 32) */
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UINT64 MessageLen; /* total size */
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UINT8 Block[SHA256_BLOCK_SIZE];
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UINT BlockLen;
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} SHA256_CTX_STRUC, *PSHA256_CTX_STRUC;
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VOID SHA256_Init (
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IN SHA256_CTX_STRUC *pSHA_CTX);
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VOID SHA256_Hash (
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IN SHA256_CTX_STRUC *pSHA_CTX);
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VOID SHA256_Append (
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IN SHA256_CTX_STRUC *pSHA_CTX,
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IN const UINT8 Message[],
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IN UINT MessageLen);
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VOID SHA256_End (
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IN SHA256_CTX_STRUC *pSHA_CTX,
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OUT UINT8 DigestMessage[]);
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VOID RT_SHA256 (
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IN const UINT8 Message[],
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IN UINT MessageLen,
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OUT UINT8 DigestMessage[]);
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#endif /* SHA256_SUPPORT */
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#endif /* __CRYPT_SHA2_H__ */
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