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authorDavid S. Miller <davem@davemloft.net>2012-11-12 15:17:31 -0800
committerDavid S. Miller <davem@davemloft.net>2012-11-13 17:12:45 -0800
commit3a0d900a997f8ade1332b56cd952e44158770491 (patch)
treed9b0b8c117b3f7019476682ac065f8eaf883bba1 /crypt/sha256.c
parente27d476a652874ad8556fcdb06d877ebabb3e9c7 (diff)
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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.c102
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>