obj-$(CONFIG_CRYPTO_MD5) += md5.o
obj-$(CONFIG_CRYPTO_SHA1) += sha1_generic.o
obj-$(CONFIG_CRYPTO_SHA256) += sha256_generic.o
-obj-$(CONFIG_CRYPTO_SHA512) += sha512.o
+obj-$(CONFIG_CRYPTO_SHA512) += sha512_generic.o
obj-$(CONFIG_CRYPTO_WP512) += wp512.o
obj-$(CONFIG_CRYPTO_TGR192) += tgr192.o
obj-$(CONFIG_CRYPTO_GF128MUL) += gf128mul.o
+++ /dev/null
-/* SHA-512 code by Jean-Luc Cooke <jlcooke@certainkey.com>
- *
- * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
- * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
- * Copyright (c) 2003 Kyle McMartin <kyle@debian.org>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/crypto.h>
-#include <linux/types.h>
-#include <crypto/sha.h>
-
-#include <asm/byteorder.h>
-
-struct sha512_ctx {
- u64 state[8];
- u32 count[4];
- u8 buf[128];
- u64 W[80];
-};
-
-static inline u64 Ch(u64 x, u64 y, u64 z)
-{
- return z ^ (x & (y ^ z));
-}
-
-static inline u64 Maj(u64 x, u64 y, u64 z)
-{
- return (x & y) | (z & (x | y));
-}
-
-static inline u64 RORu64(u64 x, u64 y)
-{
- return (x >> y) | (x << (64 - y));
-}
-
-static const u64 sha512_K[80] = {
- 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
- 0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
- 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
- 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
- 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
- 0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
- 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
- 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
- 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
- 0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
- 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
- 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
- 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
- 0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
- 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
- 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
- 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
- 0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
- 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
- 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
- 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
- 0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
- 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
- 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
- 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
- 0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
- 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,
-};
-
-#define e0(x) (RORu64(x,28) ^ RORu64(x,34) ^ RORu64(x,39))
-#define e1(x) (RORu64(x,14) ^ RORu64(x,18) ^ RORu64(x,41))
-#define s0(x) (RORu64(x, 1) ^ RORu64(x, 8) ^ (x >> 7))
-#define s1(x) (RORu64(x,19) ^ RORu64(x,61) ^ (x >> 6))
-
-static inline void LOAD_OP(int I, u64 *W, const u8 *input)
-{
- W[I] = __be64_to_cpu( ((__be64*)(input))[I] );
-}
-
-static inline void BLEND_OP(int I, u64 *W)
-{
- W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16];
-}
-
-static void
-sha512_transform(u64 *state, u64 *W, const u8 *input)
-{
- u64 a, b, c, d, e, f, g, h, t1, t2;
-
- int i;
-
- /* load the input */
- for (i = 0; i < 16; i++)
- LOAD_OP(i, W, input);
-
- for (i = 16; i < 80; i++) {
- BLEND_OP(i, W);
- }
-
- /* load the state into our registers */
- a=state[0]; b=state[1]; c=state[2]; d=state[3];
- e=state[4]; f=state[5]; g=state[6]; h=state[7];
-
- /* now iterate */
- for (i=0; i<80; i+=8) {
- t1 = h + e1(e) + Ch(e,f,g) + sha512_K[i ] + W[i ];
- t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
- t1 = g + e1(d) + Ch(d,e,f) + sha512_K[i+1] + W[i+1];
- t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
- t1 = f + e1(c) + Ch(c,d,e) + sha512_K[i+2] + W[i+2];
- t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
- t1 = e + e1(b) + Ch(b,c,d) + sha512_K[i+3] + W[i+3];
- t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
- t1 = d + e1(a) + Ch(a,b,c) + sha512_K[i+4] + W[i+4];
- t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
- t1 = c + e1(h) + Ch(h,a,b) + sha512_K[i+5] + W[i+5];
- t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
- t1 = b + e1(g) + Ch(g,h,a) + sha512_K[i+6] + W[i+6];
- t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
- t1 = a + e1(f) + Ch(f,g,h) + sha512_K[i+7] + W[i+7];
- t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
- }
-
- state[0] += a; state[1] += b; state[2] += c; state[3] += d;
- state[4] += e; state[5] += f; state[6] += g; state[7] += h;
-
- /* erase our data */
- a = b = c = d = e = f = g = h = t1 = t2 = 0;
-}
-
-static void
-sha512_init(struct crypto_tfm *tfm)
-{
- struct sha512_ctx *sctx = crypto_tfm_ctx(tfm);
- sctx->state[0] = SHA512_H0;
- sctx->state[1] = SHA512_H1;
- sctx->state[2] = SHA512_H2;
- sctx->state[3] = SHA512_H3;
- sctx->state[4] = SHA512_H4;
- sctx->state[5] = SHA512_H5;
- sctx->state[6] = SHA512_H6;
- sctx->state[7] = SHA512_H7;
- sctx->count[0] = sctx->count[1] = sctx->count[2] = sctx->count[3] = 0;
-}
-
-static void
-sha384_init(struct crypto_tfm *tfm)
-{
- struct sha512_ctx *sctx = crypto_tfm_ctx(tfm);
- sctx->state[0] = SHA384_H0;
- sctx->state[1] = SHA384_H1;
- sctx->state[2] = SHA384_H2;
- sctx->state[3] = SHA384_H3;
- sctx->state[4] = SHA384_H4;
- sctx->state[5] = SHA384_H5;
- sctx->state[6] = SHA384_H6;
- sctx->state[7] = SHA384_H7;
- sctx->count[0] = sctx->count[1] = sctx->count[2] = sctx->count[3] = 0;
-}
-
-static void
-sha512_update(struct crypto_tfm *tfm, const u8 *data, unsigned int len)
-{
- struct sha512_ctx *sctx = crypto_tfm_ctx(tfm);
-
- unsigned int i, index, part_len;
-
- /* Compute number of bytes mod 128 */
- index = (unsigned int)((sctx->count[0] >> 3) & 0x7F);
-
- /* Update number of bits */
- if ((sctx->count[0] += (len << 3)) < (len << 3)) {
- if ((sctx->count[1] += 1) < 1)
- if ((sctx->count[2] += 1) < 1)
- sctx->count[3]++;
- sctx->count[1] += (len >> 29);
- }
-
- part_len = 128 - index;
-
- /* Transform as many times as possible. */
- if (len >= part_len) {
- memcpy(&sctx->buf[index], data, part_len);
- sha512_transform(sctx->state, sctx->W, sctx->buf);
-
- for (i = part_len; i + 127 < len; i+=128)
- sha512_transform(sctx->state, sctx->W, &data[i]);
-
- index = 0;
- } else {
- i = 0;
- }
-
- /* Buffer remaining input */
- memcpy(&sctx->buf[index], &data[i], len - i);
-
- /* erase our data */
- memset(sctx->W, 0, sizeof(sctx->W));
-}
-
-static void
-sha512_final(struct crypto_tfm *tfm, u8 *hash)
-{
- struct sha512_ctx *sctx = crypto_tfm_ctx(tfm);
- static u8 padding[128] = { 0x80, };
- __be64 *dst = (__be64 *)hash;
- __be32 bits[4];
- unsigned int index, pad_len;
- int i;
-
- /* Save number of bits */
- bits[3] = cpu_to_be32(sctx->count[0]);
- bits[2] = cpu_to_be32(sctx->count[1]);
- bits[1] = cpu_to_be32(sctx->count[2]);
- bits[0] = cpu_to_be32(sctx->count[3]);
-
- /* Pad out to 112 mod 128. */
- index = (sctx->count[0] >> 3) & 0x7f;
- pad_len = (index < 112) ? (112 - index) : ((128+112) - index);
- sha512_update(tfm, padding, pad_len);
-
- /* Append length (before padding) */
- sha512_update(tfm, (const u8 *)bits, sizeof(bits));
-
- /* Store state in digest */
- for (i = 0; i < 8; i++)
- dst[i] = cpu_to_be64(sctx->state[i]);
-
- /* Zeroize sensitive information. */
- memset(sctx, 0, sizeof(struct sha512_ctx));
-}
-
-static void sha384_final(struct crypto_tfm *tfm, u8 *hash)
-{
- u8 D[64];
-
- sha512_final(tfm, D);
-
- memcpy(hash, D, 48);
- memset(D, 0, 64);
-}
-
-static struct crypto_alg sha512 = {
- .cra_name = "sha512",
- .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
- .cra_blocksize = SHA512_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct sha512_ctx),
- .cra_module = THIS_MODULE,
- .cra_alignmask = 3,
- .cra_list = LIST_HEAD_INIT(sha512.cra_list),
- .cra_u = { .digest = {
- .dia_digestsize = SHA512_DIGEST_SIZE,
- .dia_init = sha512_init,
- .dia_update = sha512_update,
- .dia_final = sha512_final }
- }
-};
-
-static struct crypto_alg sha384 = {
- .cra_name = "sha384",
- .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
- .cra_blocksize = SHA384_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct sha512_ctx),
- .cra_alignmask = 3,
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(sha384.cra_list),
- .cra_u = { .digest = {
- .dia_digestsize = SHA384_DIGEST_SIZE,
- .dia_init = sha384_init,
- .dia_update = sha512_update,
- .dia_final = sha384_final }
- }
-};
-
-MODULE_ALIAS("sha384");
-
-static int __init init(void)
-{
- int ret = 0;
-
- if ((ret = crypto_register_alg(&sha384)) < 0)
- goto out;
- if ((ret = crypto_register_alg(&sha512)) < 0)
- crypto_unregister_alg(&sha384);
-out:
- return ret;
-}
-
-static void __exit fini(void)
-{
- crypto_unregister_alg(&sha384);
- crypto_unregister_alg(&sha512);
-}
-
-module_init(init);
-module_exit(fini);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("SHA-512 and SHA-384 Secure Hash Algorithms");
--- /dev/null
+/* SHA-512 code by Jean-Luc Cooke <jlcooke@certainkey.com>
+ *
+ * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
+ * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
+ * Copyright (c) 2003 Kyle McMartin <kyle@debian.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/crypto.h>
+#include <linux/types.h>
+#include <crypto/sha.h>
+
+#include <asm/byteorder.h>
+
+struct sha512_ctx {
+ u64 state[8];
+ u32 count[4];
+ u8 buf[128];
+ u64 W[80];
+};
+
+static inline u64 Ch(u64 x, u64 y, u64 z)
+{
+ return z ^ (x & (y ^ z));
+}
+
+static inline u64 Maj(u64 x, u64 y, u64 z)
+{
+ return (x & y) | (z & (x | y));
+}
+
+static inline u64 RORu64(u64 x, u64 y)
+{
+ return (x >> y) | (x << (64 - y));
+}
+
+static const u64 sha512_K[80] = {
+ 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
+ 0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
+ 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
+ 0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
+ 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
+ 0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
+ 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
+ 0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
+ 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
+ 0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
+ 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
+ 0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
+ 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
+ 0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
+ 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
+ 0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
+ 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
+ 0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
+ 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
+ 0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
+ 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
+ 0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
+ 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
+ 0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
+ 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
+ 0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
+ 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,
+};
+
+#define e0(x) (RORu64(x,28) ^ RORu64(x,34) ^ RORu64(x,39))
+#define e1(x) (RORu64(x,14) ^ RORu64(x,18) ^ RORu64(x,41))
+#define s0(x) (RORu64(x, 1) ^ RORu64(x, 8) ^ (x >> 7))
+#define s1(x) (RORu64(x,19) ^ RORu64(x,61) ^ (x >> 6))
+
+static inline void LOAD_OP(int I, u64 *W, const u8 *input)
+{
+ W[I] = __be64_to_cpu( ((__be64*)(input))[I] );
+}
+
+static inline void BLEND_OP(int I, u64 *W)
+{
+ W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16];
+}
+
+static void
+sha512_transform(u64 *state, u64 *W, const u8 *input)
+{
+ u64 a, b, c, d, e, f, g, h, t1, t2;
+
+ int i;
+
+ /* load the input */
+ for (i = 0; i < 16; i++)
+ LOAD_OP(i, W, input);
+
+ for (i = 16; i < 80; i++) {
+ BLEND_OP(i, W);
+ }
+
+ /* load the state into our registers */
+ a=state[0]; b=state[1]; c=state[2]; d=state[3];
+ e=state[4]; f=state[5]; g=state[6]; h=state[7];
+
+ /* now iterate */
+ for (i=0; i<80; i+=8) {
+ t1 = h + e1(e) + Ch(e,f,g) + sha512_K[i ] + W[i ];
+ t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
+ t1 = g + e1(d) + Ch(d,e,f) + sha512_K[i+1] + W[i+1];
+ t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
+ t1 = f + e1(c) + Ch(c,d,e) + sha512_K[i+2] + W[i+2];
+ t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
+ t1 = e + e1(b) + Ch(b,c,d) + sha512_K[i+3] + W[i+3];
+ t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
+ t1 = d + e1(a) + Ch(a,b,c) + sha512_K[i+4] + W[i+4];
+ t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
+ t1 = c + e1(h) + Ch(h,a,b) + sha512_K[i+5] + W[i+5];
+ t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
+ t1 = b + e1(g) + Ch(g,h,a) + sha512_K[i+6] + W[i+6];
+ t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
+ t1 = a + e1(f) + Ch(f,g,h) + sha512_K[i+7] + W[i+7];
+ t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
+ }
+
+ state[0] += a; state[1] += b; state[2] += c; state[3] += d;
+ state[4] += e; state[5] += f; state[6] += g; state[7] += h;
+
+ /* erase our data */
+ a = b = c = d = e = f = g = h = t1 = t2 = 0;
+}
+
+static void
+sha512_init(struct crypto_tfm *tfm)
+{
+ struct sha512_ctx *sctx = crypto_tfm_ctx(tfm);
+ sctx->state[0] = SHA512_H0;
+ sctx->state[1] = SHA512_H1;
+ sctx->state[2] = SHA512_H2;
+ sctx->state[3] = SHA512_H3;
+ sctx->state[4] = SHA512_H4;
+ sctx->state[5] = SHA512_H5;
+ sctx->state[6] = SHA512_H6;
+ sctx->state[7] = SHA512_H7;
+ sctx->count[0] = sctx->count[1] = sctx->count[2] = sctx->count[3] = 0;
+}
+
+static void
+sha384_init(struct crypto_tfm *tfm)
+{
+ struct sha512_ctx *sctx = crypto_tfm_ctx(tfm);
+ sctx->state[0] = SHA384_H0;
+ sctx->state[1] = SHA384_H1;
+ sctx->state[2] = SHA384_H2;
+ sctx->state[3] = SHA384_H3;
+ sctx->state[4] = SHA384_H4;
+ sctx->state[5] = SHA384_H5;
+ sctx->state[6] = SHA384_H6;
+ sctx->state[7] = SHA384_H7;
+ sctx->count[0] = sctx->count[1] = sctx->count[2] = sctx->count[3] = 0;
+}
+
+static void
+sha512_update(struct crypto_tfm *tfm, const u8 *data, unsigned int len)
+{
+ struct sha512_ctx *sctx = crypto_tfm_ctx(tfm);
+
+ unsigned int i, index, part_len;
+
+ /* Compute number of bytes mod 128 */
+ index = (unsigned int)((sctx->count[0] >> 3) & 0x7F);
+
+ /* Update number of bits */
+ if ((sctx->count[0] += (len << 3)) < (len << 3)) {
+ if ((sctx->count[1] += 1) < 1)
+ if ((sctx->count[2] += 1) < 1)
+ sctx->count[3]++;
+ sctx->count[1] += (len >> 29);
+ }
+
+ part_len = 128 - index;
+
+ /* Transform as many times as possible. */
+ if (len >= part_len) {
+ memcpy(&sctx->buf[index], data, part_len);
+ sha512_transform(sctx->state, sctx->W, sctx->buf);
+
+ for (i = part_len; i + 127 < len; i+=128)
+ sha512_transform(sctx->state, sctx->W, &data[i]);
+
+ index = 0;
+ } else {
+ i = 0;
+ }
+
+ /* Buffer remaining input */
+ memcpy(&sctx->buf[index], &data[i], len - i);
+
+ /* erase our data */
+ memset(sctx->W, 0, sizeof(sctx->W));
+}
+
+static void
+sha512_final(struct crypto_tfm *tfm, u8 *hash)
+{
+ struct sha512_ctx *sctx = crypto_tfm_ctx(tfm);
+ static u8 padding[128] = { 0x80, };
+ __be64 *dst = (__be64 *)hash;
+ __be32 bits[4];
+ unsigned int index, pad_len;
+ int i;
+
+ /* Save number of bits */
+ bits[3] = cpu_to_be32(sctx->count[0]);
+ bits[2] = cpu_to_be32(sctx->count[1]);
+ bits[1] = cpu_to_be32(sctx->count[2]);
+ bits[0] = cpu_to_be32(sctx->count[3]);
+
+ /* Pad out to 112 mod 128. */
+ index = (sctx->count[0] >> 3) & 0x7f;
+ pad_len = (index < 112) ? (112 - index) : ((128+112) - index);
+ sha512_update(tfm, padding, pad_len);
+
+ /* Append length (before padding) */
+ sha512_update(tfm, (const u8 *)bits, sizeof(bits));
+
+ /* Store state in digest */
+ for (i = 0; i < 8; i++)
+ dst[i] = cpu_to_be64(sctx->state[i]);
+
+ /* Zeroize sensitive information. */
+ memset(sctx, 0, sizeof(struct sha512_ctx));
+}
+
+static void sha384_final(struct crypto_tfm *tfm, u8 *hash)
+{
+ u8 D[64];
+
+ sha512_final(tfm, D);
+
+ memcpy(hash, D, 48);
+ memset(D, 0, 64);
+}
+
+static struct crypto_alg sha512 = {
+ .cra_name = "sha512",
+ .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
+ .cra_blocksize = SHA512_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sha512_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_alignmask = 3,
+ .cra_list = LIST_HEAD_INIT(sha512.cra_list),
+ .cra_u = { .digest = {
+ .dia_digestsize = SHA512_DIGEST_SIZE,
+ .dia_init = sha512_init,
+ .dia_update = sha512_update,
+ .dia_final = sha512_final }
+ }
+};
+
+static struct crypto_alg sha384 = {
+ .cra_name = "sha384",
+ .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
+ .cra_blocksize = SHA384_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sha512_ctx),
+ .cra_alignmask = 3,
+ .cra_module = THIS_MODULE,
+ .cra_list = LIST_HEAD_INIT(sha384.cra_list),
+ .cra_u = { .digest = {
+ .dia_digestsize = SHA384_DIGEST_SIZE,
+ .dia_init = sha384_init,
+ .dia_update = sha512_update,
+ .dia_final = sha384_final }
+ }
+};
+
+static int __init init(void)
+{
+ int ret = 0;
+
+ if ((ret = crypto_register_alg(&sha384)) < 0)
+ goto out;
+ if ((ret = crypto_register_alg(&sha512)) < 0)
+ crypto_unregister_alg(&sha384);
+out:
+ return ret;
+}
+
+static void __exit fini(void)
+{
+ crypto_unregister_alg(&sha384);
+ crypto_unregister_alg(&sha512);
+}
+
+module_init(init);
+module_exit(fini);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("SHA-512 and SHA-384 Secure Hash Algorithms");
+
+MODULE_ALIAS("sha384");
+MODULE_ALIAS("sha512");
projects / linux-flexiantxendom0-natty.git / commitdiff