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author | David S. Miller <davem@davemloft.net> | 2012-11-12 15:17:31 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2012-11-13 17:12:45 -0800 |
commit | 3a0d900a997f8ade1332b56cd952e44158770491 (patch) | |
tree | d9b0b8c117b3f7019476682ac065f8eaf883bba1 /crypt/sha256.c | |
parent | e27d476a652874ad8556fcdb06d877ebabb3e9c7 (diff) | |
download | glibc-3a0d900a997f8ade1332b56cd952e44158770491.zip glibc-3a0d900a997f8ade1332b56cd952e44158770491.tar.gz glibc-3a0d900a997f8ade1332b56cd952e44158770491.tar.bz2 |
Add support for sparc cryptographic hash opcodes.
* crypt/Makefile: Move test targets after toplevel Rules
inclusion. Grab any necessary sysdep routines when linking.
* crypt/md5.c (md5_process_block): Remove define, we will always
name it __md5_process_block.
(md5_finish_ctx): Update md5_process_block call.
(md5_stream): Likewise.
(md5_process_bytes): Likewise.
(md5_process_block): Rename to __md5_process_block and move to ...
* crypt/md5-block.c: ... here.
* crypt/sha256.c (sha256_process_block): Move to ...
* crypt/sha256-block.c: ... here.
* crypt/sha512.c (sha512_process_block): Move to ...
* crypt/sha512-block.c: ... here.
* locale/Makefile (CFLAGS-md5.c): Define to add crypt/ to include
path.
* sysdeps/sparc/sparc-ifunc.c (sparc_libc_ifunc): Define.
* sysdeps/sparc/sparc64/multiarch/Makefile
(libcrypt-sysdep_routines): Add crypto assembler sysdeps when in
crypt subdir.
(localedef-aux): Add md5 crypto assembler when in locale subdir.
* sysdeps/sparc/sparc32/sparcv9/multiarch/Makefile: Mirror sparc64
multiarch changes.
* sysdeps/sparc/sparc64/multiarch/md5-block.c: New file.
* sysdeps/sparc/sparc64/multiarch/md5-crop.S: New file.
* sysdeps/sparc/sparc64/multiarch/sha256-block.c: New file.
* sysdeps/sparc/sparc64/multiarch/sha256-crop.S: New file.
* sysdeps/sparc/sparc64/multiarch/sha512-block.c: New file.
* sysdeps/sparc/sparc64/multiarch/sha512-crop.S: New file.
* sysdeps/sparc/sparc32/sparcv9/multiarch/md5-block.c: New file.
* sysdeps/sparc/sparc32/sparcv9/multiarch/md5-crop.S: New file.
* sysdeps/sparc/sparc32/sparcv9/multiarch/sha256-block.c: New
file.
* sysdeps/sparc/sparc32/sparcv9/multiarch/sha256-crop.S: New file.
* sysdeps/sparc/sparc32/sparcv9/multiarch/sha512-block.c: New
file.
* sysdeps/sparc/sparc32/sparcv9/multiarch/sha512-crop.S: New file.
Diffstat (limited to 'crypt/sha256.c')
-rw-r--r-- | crypt/sha256.c | 102 |
1 files changed, 4 insertions, 98 deletions
diff --git a/crypt/sha256.c b/crypt/sha256.c index 61be6bc..aea9465 100644 --- a/crypt/sha256.c +++ b/crypt/sha256.c @@ -80,104 +80,8 @@ static const uint32_t K[64] = 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 }; - -/* Process LEN bytes of BUFFER, accumulating context into CTX. - It is assumed that LEN % 64 == 0. */ -static void -sha256_process_block (const void *buffer, size_t len, struct sha256_ctx *ctx) -{ - const uint32_t *words = buffer; - size_t nwords = len / sizeof (uint32_t); - uint32_t a = ctx->H[0]; - uint32_t b = ctx->H[1]; - uint32_t c = ctx->H[2]; - uint32_t d = ctx->H[3]; - uint32_t e = ctx->H[4]; - uint32_t f = ctx->H[5]; - uint32_t g = ctx->H[6]; - uint32_t h = ctx->H[7]; - - /* First increment the byte count. FIPS 180-2 specifies the possible - length of the file up to 2^64 bits. Here we only compute the - number of bytes. */ - ctx->total64 += len; - - /* Process all bytes in the buffer with 64 bytes in each round of - the loop. */ - while (nwords > 0) - { - uint32_t W[64]; - uint32_t a_save = a; - uint32_t b_save = b; - uint32_t c_save = c; - uint32_t d_save = d; - uint32_t e_save = e; - uint32_t f_save = f; - uint32_t g_save = g; - uint32_t h_save = h; - - /* Operators defined in FIPS 180-2:4.1.2. */ -#define Ch(x, y, z) ((x & y) ^ (~x & z)) -#define Maj(x, y, z) ((x & y) ^ (x & z) ^ (y & z)) -#define S0(x) (CYCLIC (x, 2) ^ CYCLIC (x, 13) ^ CYCLIC (x, 22)) -#define S1(x) (CYCLIC (x, 6) ^ CYCLIC (x, 11) ^ CYCLIC (x, 25)) -#define R0(x) (CYCLIC (x, 7) ^ CYCLIC (x, 18) ^ (x >> 3)) -#define R1(x) (CYCLIC (x, 17) ^ CYCLIC (x, 19) ^ (x >> 10)) - - /* It is unfortunate that C does not provide an operator for - cyclic rotation. Hope the C compiler is smart enough. */ -#define CYCLIC(w, s) ((w >> s) | (w << (32 - s))) - - /* Compute the message schedule according to FIPS 180-2:6.2.2 step 2. */ - for (unsigned int t = 0; t < 16; ++t) - { - W[t] = SWAP (*words); - ++words; - } - for (unsigned int t = 16; t < 64; ++t) - W[t] = R1 (W[t - 2]) + W[t - 7] + R0 (W[t - 15]) + W[t - 16]; - - /* The actual computation according to FIPS 180-2:6.2.2 step 3. */ - for (unsigned int t = 0; t < 64; ++t) - { - uint32_t T1 = h + S1 (e) + Ch (e, f, g) + K[t] + W[t]; - uint32_t T2 = S0 (a) + Maj (a, b, c); - h = g; - g = f; - f = e; - e = d + T1; - d = c; - c = b; - b = a; - a = T1 + T2; - } - - /* Add the starting values of the context according to FIPS 180-2:6.2.2 - step 4. */ - a += a_save; - b += b_save; - c += c_save; - d += d_save; - e += e_save; - f += f_save; - g += g_save; - h += h_save; - - /* Prepare for the next round. */ - nwords -= 16; - } - - /* Put checksum in context given as argument. */ - ctx->H[0] = a; - ctx->H[1] = b; - ctx->H[2] = c; - ctx->H[3] = d; - ctx->H[4] = e; - ctx->H[5] = f; - ctx->H[6] = g; - ctx->H[7] = h; -} - +void +sha256_process_block (const void *, size_t, struct sha256_ctx *); /* Initialize structure containing state of computation. (FIPS 180-2:5.3.2) */ @@ -312,3 +216,5 @@ __sha256_process_bytes (buffer, len, ctx) ctx->buflen = left_over; } } + +#include <sha256-block.c> |