This patch extends sha256_generic.c to support SHA-224 as described in
FIPS 180-2 and RFC 3874. HMAC-SHA-224 as described in RFC4231 is then
supported through the hmac interface.

SHA-224 should be chosen as a hash algorithm when 112 bits of security
strength is required.

Patch includes test vectors for SHA-224 and HMAC-SHA-224 taken from the
above mentioned standards to the tcrypt test suite. The tests pass with
the vectors for SHA-224 and HMAC-SHA-224.

Patch generated against the 2.6.24-rc1 kernel and I have tested against
2.6.24-rc1-git14 which includes fix for scatter gather implementation
for HMAC. 

Please Apply.

Signed-off-by: Jonathan Lynch <[EMAIL PROTECTED]>

---

diff -uprN -X linux-2.6.24-rc1-vanilla/Documentation/dontdiff 
linux-2.6.24-rc1-vanilla/crypto/Kconfig linux-2.6.24-rc1/crypto/Kconfig
--- linux-2.6.24-rc1-vanilla/crypto/Kconfig     2007-11-05 17:12:50.291842000 
+0000
+++ linux-2.6.24-rc1/crypto/Kconfig     2007-11-05 18:18:31.571720000 +0000
@@ -91,7 +91,7 @@ config CRYPTO_SHA1
          SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
 
 config CRYPTO_SHA256
-       tristate "SHA256 digest algorithm"
+       tristate "SHA224 and SHA256 digest algorithm"
        select CRYPTO_ALGAPI
        help
          SHA256 secure hash standard (DFIPS 180-2).
@@ -99,6 +99,9 @@ config CRYPTO_SHA256
          This version of SHA implements a 256 bit hash with 128 bits of
          security against collision attacks.
 
+          This code also includes SHA-224, a 224 bit hash with 112 bits
+          of security against collision attacks.
+
 config CRYPTO_SHA512
        tristate "SHA384 and SHA512 digest algorithms"
        select CRYPTO_ALGAPI
diff -uprN -X linux-2.6.24-rc1-vanilla/Documentation/dontdiff 
linux-2.6.24-rc1-vanilla/crypto/sha256_generic.c 
linux-2.6.24-rc1/crypto/sha256_generic.c
--- linux-2.6.24-rc1-vanilla/crypto/sha256_generic.c    2007-11-05 
17:12:50.454842000 +0000
+++ linux-2.6.24-rc1/crypto/sha256_generic.c    2007-11-06 14:24:52.872908000 
+0000
@@ -9,6 +9,7 @@
  * Copyright (c) Jean-Luc Cooke <[EMAIL PROTECTED]>
  * Copyright (c) Andrew McDonald <[EMAIL PROTECTED]>
  * Copyright (c) 2002 James Morris <[EMAIL PROTECTED]>
+ * SHA224 Support Copyright 2007 Intel Corporation <[EMAIL PROTECTED]>
  *
  * 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
@@ -219,6 +220,22 @@ static void sha256_transform(u32 *state,
        memset(W, 0, 64 * sizeof(u32));
 }
 
+
+static void sha224_init(struct crypto_tfm *tfm)
+{
+       struct sha256_ctx *sctx = crypto_tfm_ctx(tfm);
+       sctx->state[0] = SHA224_H0;
+       sctx->state[1] = SHA224_H1;
+       sctx->state[2] = SHA224_H2;
+       sctx->state[3] = SHA224_H3;
+       sctx->state[4] = SHA224_H4;
+       sctx->state[5] = SHA224_H5;
+       sctx->state[6] = SHA224_H6;
+       sctx->state[7] = SHA224_H7;
+       sctx->count[0] = 0;
+       sctx->count[1] = 0;
+}
+
 static void sha256_init(struct crypto_tfm *tfm)
 {
        struct sha256_ctx *sctx = crypto_tfm_ctx(tfm);
@@ -295,8 +312,17 @@ static void sha256_final(struct crypto_t
        memset(sctx, 0, sizeof(*sctx));
 }
 
+static void sha224_final(struct crypto_tfm *tfm, u8 *hash)
+{
+       u8 D[SHA256_DIGEST_SIZE];
+
+       sha256_final(tfm, D);
+
+       memcpy(hash, D, SHA224_DIGEST_SIZE);
+       memset(D, 0, SHA256_DIGEST_SIZE);
+}
 
-static struct crypto_alg alg = {
+static struct crypto_alg sha256 = {
        .cra_name       =       "sha256",
        .cra_driver_name=       "sha256-generic",
        .cra_flags      =       CRYPTO_ALG_TYPE_DIGEST,
@@ -304,28 +330,58 @@ static struct crypto_alg alg = {
        .cra_ctxsize    =       sizeof(struct sha256_ctx),
        .cra_module     =       THIS_MODULE,
        .cra_alignmask  =       3,
-       .cra_list       =       LIST_HEAD_INIT(alg.cra_list),
+       .cra_list       =       LIST_HEAD_INIT(sha256.cra_list),
        .cra_u          =       { .digest = {
        .dia_digestsize =       SHA256_DIGEST_SIZE,
-       .dia_init       =       sha256_init,
-       .dia_update     =       sha256_update,
-       .dia_final      =       sha256_final } }
+       .dia_init       =       sha256_init,
+       .dia_update     =       sha256_update,
+       .dia_final      =       sha256_final } }
+};
+
+static struct crypto_alg sha224 = {
+       .cra_name       = "sha224",
+       .cra_driver_name = "sha224-generic",
+       .cra_flags      = CRYPTO_ALG_TYPE_DIGEST,
+       .cra_blocksize  = SHA224_BLOCK_SIZE,
+       .cra_ctxsize    = sizeof(struct sha256_ctx),
+       .cra_module     = THIS_MODULE,
+       .cra_alignmask  = 3,
+       .cra_list       = LIST_HEAD_INIT(sha224.cra_list),
+       .cra_u          = { .digest = {
+       .dia_digestsize = SHA224_DIGEST_SIZE,
+       .dia_init       = sha224_init,
+       .dia_update     = sha256_update,
+       .dia_final      = sha224_final } }
 };
 
 static int __init init(void)
 {
-       return crypto_register_alg(&alg);
+       int ret = 0;
+
+       ret = crypto_register_alg(&sha224);
+
+       if (ret < 0)
+               return ret;
+
+       ret = crypto_register_alg(&sha256);
+
+       if (ret < 0)
+               crypto_unregister_alg(&sha224);
+
+       return ret;
 }
 
 static void __exit fini(void)
 {
-       crypto_unregister_alg(&alg);
+       crypto_unregister_alg(&sha224);
+       crypto_unregister_alg(&sha256);
 }
 
 module_init(init);
 module_exit(fini);
 
 MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("SHA256 Secure Hash Algorithm");
+MODULE_DESCRIPTION("SHA-224 and SHA-256 Secure Hash Algorithm");
 
+MODULE_ALIAS("sha224");
 MODULE_ALIAS("sha256");
diff -uprN -X linux-2.6.24-rc1-vanilla/Documentation/dontdiff 
linux-2.6.24-rc1-vanilla/crypto/tcrypt.c linux-2.6.24-rc1/crypto/tcrypt.c
--- linux-2.6.24-rc1-vanilla/crypto/tcrypt.c    2007-11-05 17:12:50.468842000 
+0000
+++ linux-2.6.24-rc1/crypto/tcrypt.c    2007-11-06 10:20:30.985270000 +0000
@@ -12,6 +12,7 @@
  * Software Foundation; either version 2 of the License, or (at your option)
  * any later version.
  *
+ * 2007-11-06 Added SHA-224 and SHA-224-HMAC tests
  * 2006-12-07 Added SHA384 HMAC and SHA512 HMAC tests
  * 2004-08-09 Added cipher speed tests (Reyk Floeter <[EMAIL PROTECTED]>)
  * 2003-09-14 Rewritten by Kartikey Mahendra Bhatt
@@ -74,9 +75,9 @@ static char *xbuf;
 static char *tvmem;
 
 static char *check[] = {
-       "des", "md5", "des3_ede", "rot13", "sha1", "sha256", "blowfish",
-       "twofish", "serpent", "sha384", "sha512", "md4", "aes", "cast6",
-       "arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
+       "des", "md5", "des3_ede", "rot13", "sha1", "sha224", "sha256",
+       "blowfish", "twofish", "serpent", "sha384", "sha512", "md4", "aes",
+       "cast6", "arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
        "khazad", "wp512", "wp384", "wp256", "tnepres", "xeta",  "fcrypt",
        "camellia", "seed", NULL
 };
@@ -908,6 +909,8 @@ static void do_test(void)
 
                test_hash("md4", md4_tv_template, MD4_TEST_VECTORS);
 
+               test_hash("sha224", sha224_tv_template, SHA224_TEST_VECTORS);
+
                test_hash("sha256", sha256_tv_template, SHA256_TEST_VECTORS);
 
                //BLOWFISH
@@ -1053,6 +1056,8 @@ static void do_test(void)
                          HMAC_MD5_TEST_VECTORS);
                test_hash("hmac(sha1)", hmac_sha1_tv_template,
                          HMAC_SHA1_TEST_VECTORS);
+               test_hash("hmac(sha224)", hmac_sha224_tv_template,
+                         HMAC_SHA224_TEST_VECTORS);
                test_hash("hmac(sha256)", hmac_sha256_tv_template,
                          HMAC_SHA256_TEST_VECTORS);
                test_hash("hmac(sha384)", hmac_sha384_tv_template,
@@ -1097,10 +1102,14 @@ static void do_test(void)
                break;
 
        case 6:
-               test_hash("sha256", sha256_tv_template, SHA256_TEST_VECTORS);
+               test_hash("sha224", sha224_tv_template, SHA224_TEST_VECTORS);
                break;
 
        case 7:
+               test_hash("sha256", sha256_tv_template, SHA256_TEST_VECTORS);
+               break;
+
+       case 8:
                test_cipher("ecb(blowfish)", ENCRYPT, bf_enc_tv_template,
                            BF_ENC_TEST_VECTORS);
                test_cipher("ecb(blowfish)", DECRYPT, bf_dec_tv_template,
@@ -1111,7 +1120,7 @@ static void do_test(void)
                            BF_CBC_DEC_TEST_VECTORS);
                break;
 
-       case 8:
+       case 9:
                test_cipher("ecb(twofish)", ENCRYPT, tf_enc_tv_template,
                            TF_ENC_TEST_VECTORS);
                test_cipher("ecb(twofish)", DECRYPT, tf_dec_tv_template,
@@ -1122,14 +1131,14 @@ static void do_test(void)
                            TF_CBC_DEC_TEST_VECTORS);
                break;
 
-       case 9:
+       case 10:
                test_cipher("ecb(serpent)", ENCRYPT, serpent_enc_tv_template,
                            SERPENT_ENC_TEST_VECTORS);
                test_cipher("ecb(serpent)", DECRYPT, serpent_dec_tv_template,
                            SERPENT_DEC_TEST_VECTORS);
                break;
 
-       case 10:
+       case 11:
                test_cipher("ecb(aes)", ENCRYPT, aes_enc_tv_template,
                            AES_ENC_TEST_VECTORS);
                test_cipher("ecb(aes)", DECRYPT, aes_dec_tv_template,
@@ -1148,88 +1157,88 @@ static void do_test(void)
                            AES_XTS_DEC_TEST_VECTORS);
                break;
 
-       case 11:
+       case 12:
                test_hash("sha384", sha384_tv_template, SHA384_TEST_VECTORS);
                break;
 
-       case 12:
+       case 13:
                test_hash("sha512", sha512_tv_template, SHA512_TEST_VECTORS);
                break;
 
-       case 13:
+       case 14:
                test_deflate();
                break;
 
-       case 14:
+       case 15:
                test_cipher("ecb(cast5)", ENCRYPT, cast5_enc_tv_template,
                            CAST5_ENC_TEST_VECTORS);
                test_cipher("ecb(cast5)", DECRYPT, cast5_dec_tv_template,
                            CAST5_DEC_TEST_VECTORS);
                break;
 
-       case 15:
+       case 16:
                test_cipher("ecb(cast6)", ENCRYPT, cast6_enc_tv_template,
                            CAST6_ENC_TEST_VECTORS);
                test_cipher("ecb(cast6)", DECRYPT, cast6_dec_tv_template,
                            CAST6_DEC_TEST_VECTORS);
                break;
 
-       case 16:
+       case 17:
                test_cipher("ecb(arc4)", ENCRYPT, arc4_enc_tv_template,
                            ARC4_ENC_TEST_VECTORS);
                test_cipher("ecb(arc4)", DECRYPT, arc4_dec_tv_template,
                            ARC4_DEC_TEST_VECTORS);
                break;
 
-       case 17:
+       case 18:
                test_hash("michael_mic", michael_mic_tv_template, 
MICHAEL_MIC_TEST_VECTORS);
                break;
 
-       case 18:
+       case 19:
                test_hash("crc32c", crc32c_tv_template, CRC32C_TEST_VECTORS);
                break;
 
-       case 19:
+       case 20:
                test_cipher("ecb(tea)", ENCRYPT, tea_enc_tv_template,
                            TEA_ENC_TEST_VECTORS);
                test_cipher("ecb(tea)", DECRYPT, tea_dec_tv_template,
                            TEA_DEC_TEST_VECTORS);
                break;
 
-       case 20:
+       case 21:
                test_cipher("ecb(xtea)", ENCRYPT, xtea_enc_tv_template,
                            XTEA_ENC_TEST_VECTORS);
                test_cipher("ecb(xtea)", DECRYPT, xtea_dec_tv_template,
                            XTEA_DEC_TEST_VECTORS);
                break;
 
-       case 21:
+       case 22:
                test_cipher("ecb(khazad)", ENCRYPT, khazad_enc_tv_template,
                            KHAZAD_ENC_TEST_VECTORS);
                test_cipher("ecb(khazad)", DECRYPT, khazad_dec_tv_template,
                            KHAZAD_DEC_TEST_VECTORS);
                break;
 
-       case 22:
+       case 23:
                test_hash("wp512", wp512_tv_template, WP512_TEST_VECTORS);
                break;
 
-       case 23:
+       case 24:
                test_hash("wp384", wp384_tv_template, WP384_TEST_VECTORS);
                break;
 
-       case 24:
+       case 25:
                test_hash("wp256", wp256_tv_template, WP256_TEST_VECTORS);
                break;
 
-       case 25:
+       case 26:
                test_cipher("ecb(tnepres)", ENCRYPT, tnepres_enc_tv_template,
                            TNEPRES_ENC_TEST_VECTORS);
                test_cipher("ecb(tnepres)", DECRYPT, tnepres_dec_tv_template,
                            TNEPRES_DEC_TEST_VECTORS);
                break;
 
-       case 26:
+       case 27:
                test_cipher("ecb(anubis)", ENCRYPT, anubis_enc_tv_template,
                            ANUBIS_ENC_TEST_VECTORS);
                test_cipher("ecb(anubis)", DECRYPT, anubis_dec_tv_template,
@@ -1240,34 +1249,34 @@ static void do_test(void)
                            ANUBIS_CBC_ENC_TEST_VECTORS);
                break;
 
-       case 27:
+       case 28:
                test_hash("tgr192", tgr192_tv_template, TGR192_TEST_VECTORS);
                break;
 
-       case 28:
+       case 29:
 
                test_hash("tgr160", tgr160_tv_template, TGR160_TEST_VECTORS);
                break;
 
-       case 29:
+       case 30:
                test_hash("tgr128", tgr128_tv_template, TGR128_TEST_VECTORS);
                break;
                
-       case 30:
+       case 31:
                test_cipher("ecb(xeta)", ENCRYPT, xeta_enc_tv_template,
                            XETA_ENC_TEST_VECTORS);
                test_cipher("ecb(xeta)", DECRYPT, xeta_dec_tv_template,
                            XETA_DEC_TEST_VECTORS);
                break;
 
-       case 31:
+       case 32:
                test_cipher("pcbc(fcrypt)", ENCRYPT, 
fcrypt_pcbc_enc_tv_template,
                            FCRYPT_ENC_TEST_VECTORS);
                test_cipher("pcbc(fcrypt)", DECRYPT, 
fcrypt_pcbc_dec_tv_template,
                            FCRYPT_DEC_TEST_VECTORS);
                break;
 
-       case 32:
+       case 33:
                test_cipher("ecb(camellia)", ENCRYPT,
                            camellia_enc_tv_template,
                            CAMELLIA_ENC_TEST_VECTORS);
@@ -1293,16 +1302,21 @@ static void do_test(void)
                break;
 
        case 102:
+               test_hash("hmac(sha224)", hmac_sha224_tv_template,
+                       HMAC_SHA224_TEST_VECTORS);
+               break;
+
+       case 103:
                test_hash("hmac(sha256)", hmac_sha256_tv_template,
                          HMAC_SHA256_TEST_VECTORS);
                break;
 
-       case 103:
+       case 104:
                test_hash("hmac(sha384)", hmac_sha384_tv_template,
                          HMAC_SHA384_TEST_VECTORS);
                break;
 
-       case 104:
+       case 105:
                test_hash("hmac(sha512)", hmac_sha512_tv_template,
                          HMAC_SHA512_TEST_VECTORS);
                break;
@@ -1406,38 +1420,42 @@ static void do_test(void)
                if (mode > 300 && mode < 400) break;
 
        case 304:
-               test_hash_speed("sha256", sec, generic_hash_speed_template);
+               test_hash_speed("sha224", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 305:
-               test_hash_speed("sha384", sec, generic_hash_speed_template);
+               test_hash_speed("sha256", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 306:
-               test_hash_speed("sha512", sec, generic_hash_speed_template);
+               test_hash_speed("sha384", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 307:
-               test_hash_speed("wp256", sec, generic_hash_speed_template);
+               test_hash_speed("sha512", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 308:
-               test_hash_speed("wp384", sec, generic_hash_speed_template);
+               test_hash_speed("wp256", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 309:
-               test_hash_speed("wp512", sec, generic_hash_speed_template);
+               test_hash_speed("wp384", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 310:
-               test_hash_speed("tgr128", sec, generic_hash_speed_template);
+               test_hash_speed("wp512", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 311:
-               test_hash_speed("tgr160", sec, generic_hash_speed_template);
+               test_hash_speed("tgr128", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
        case 312:
+               test_hash_speed("tgr160", sec, generic_hash_speed_template);
+               if (mode > 300 && mode < 400) break;
+
+       case 313:
                test_hash_speed("tgr192", sec, generic_hash_speed_template);
                if (mode > 300 && mode < 400) break;
 
diff -uprN -X linux-2.6.24-rc1-vanilla/Documentation/dontdiff 
linux-2.6.24-rc1-vanilla/crypto/tcrypt.h linux-2.6.24-rc1/crypto/tcrypt.h
--- linux-2.6.24-rc1-vanilla/crypto/tcrypt.h    2007-11-05 17:12:50.492842000 
+0000
+++ linux-2.6.24-rc1/crypto/tcrypt.h    2007-11-05 18:18:31.610720000 +0000
@@ -173,6 +173,33 @@ static struct hash_testvec sha1_tv_templ
        }
 };
 
+
+/*
+ * SHA224 test vectors from from FIPS PUB 180-2
+ */
+#define SHA224_TEST_VECTORS     2
+
+static struct hash_testvec sha224_tv_template[] = {
+       {
+               .plaintext = "abc",
+               .psize  = 3,
+               .digest = { 0x23, 0x09, 0x7D, 0x22, 0x34, 0x05, 0xD8, 0x22,
+                       0x86, 0x42, 0xA4, 0x77, 0xBD, 0xA2, 0x55, 0xB3,
+                       0x2A, 0xAD, 0xBC, 0xE4, 0xBD, 0xA0, 0xB3, 0xF7,
+                       0xE3, 0x6C, 0x9D, 0xA7},
+       }, {
+               .plaintext =
+               "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
+               .psize  = 56,
+               .digest = { 0x75, 0x38, 0x8B, 0x16, 0x51, 0x27, 0x76, 0xCC,
+                       0x5D, 0xBA, 0x5D, 0xA1, 0xFD, 0x89, 0x01, 0x50,
+                       0xB0, 0xC6, 0x45, 0x5C, 0xB4, 0xF5, 0x8B, 0x19,
+                       0x52, 0x52, 0x25, 0x25 },
+               .np     = 2,
+               .tap    = { 28, 28 }
+       }
+};
+
 /*
  * SHA256 test vectors from from NIST
  */
@@ -753,6 +780,7 @@ static struct hash_testvec hmac_md5_tv_t
        },
 };
 
+
 /*
  * HMAC-SHA1 test vectors from RFC2202
  */
@@ -817,6 +845,121 @@ static struct hash_testvec hmac_sha1_tv_
        },
 };
 
+
+/*
+ * SHA224 HMAC test vectors from RFC4231
+ */
+#define HMAC_SHA224_TEST_VECTORS    4
+
+static struct hash_testvec hmac_sha224_tv_template[] = {
+       {
+               .key    = { 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
+                       0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
+                       0x0b, 0x0b, 0x0b, 0x0b },
+               .ksize  = 20,
+               /*  ("Hi There") */
+               .plaintext = { 0x48, 0x69, 0x20, 0x54, 0x68, 0x65, 0x72, 0x65 },
+               .psize  = 8,
+               .digest = { 0x89, 0x6f, 0xb1, 0x12, 0x8a, 0xbb, 0xdf, 0x19,
+                       0x68, 0x32, 0x10, 0x7c, 0xd4, 0x9d, 0xf3, 0x3f,
+                       0x47, 0xb4, 0xb1, 0x16, 0x99, 0x12, 0xba, 0x4f,
+                       0x53, 0x68, 0x4b, 0x22},
+       }, {
+               .key    = { 0x4a, 0x65, 0x66, 0x65 }, /* ("Jefe") */
+               .ksize  = 4,
+               /* ("what do ya want for nothing?") */
+               .plaintext = { 0x77, 0x68, 0x61, 0x74, 0x20, 0x64, 0x6f, 0x20,
+                       0x79, 0x61, 0x20, 0x77, 0x61, 0x6e, 0x74, 0x20,
+                       0x66, 0x6f, 0x72, 0x20, 0x6e, 0x6f, 0x74, 0x68,
+                       0x69, 0x6e, 0x67, 0x3f },
+               .psize  = 28,
+               .digest = { 0xa3, 0x0e, 0x01, 0x09, 0x8b, 0xc6, 0xdb, 0xbf,
+                       0x45, 0x69, 0x0f, 0x3a, 0x7e, 0x9e, 0x6d, 0x0f,
+                       0x8b, 0xbe, 0xa2, 0xa3, 0x9e, 0x61, 0x48, 0x00,
+                       0x8f, 0xd0, 0x5e, 0x44 },
+               .np = 4,
+               .tap    = { 7, 7, 7, 7 }
+       }, {
+               .key    = { 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa },
+               .ksize  = 131,
+               /* ("Test Using Larger Than Block-Size Key - Hash Key First") */
+               .plaintext = { 0x54, 0x65, 0x73, 0x74, 0x20, 0x55, 0x73, 0x69,
+                       0x6e, 0x67, 0x20, 0x4c, 0x61, 0x72, 0x67, 0x65,
+                       0x72, 0x20, 0x54, 0x68, 0x61, 0x6e, 0x20, 0x42,
+                       0x6c, 0x6f, 0x63, 0x6b, 0x2d, 0x53, 0x69, 0x7a,
+                       0x65, 0x20, 0x4b, 0x65, 0x79, 0x20, 0x2d, 0x20,
+                       0x48, 0x61, 0x73, 0x68, 0x20, 0x4b, 0x65, 0x79,
+                       0x20, 0x46, 0x69, 0x72, 0x73, 0x74 },
+               .psize  = 54,
+               .digest = { 0x95, 0xe9, 0xa0, 0xdb, 0x96, 0x20, 0x95, 0xad,
+                       0xae, 0xbe, 0x9b, 0x2d, 0x6f, 0x0d, 0xbc, 0xe2,
+                       0xd4, 0x99, 0xf1, 0x12, 0xf2, 0xd2, 0xb7, 0x27,
+                       0x3f, 0xa6, 0x87, 0x0e },
+       }, {
+               .key    = { 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+                       0xaa, 0xaa, 0xaa },
+               .ksize  = 131,
+               /* ("This is a test using a larger than block-size key and a")
+               (" larger than block-size data. The key needs to be")
+                       (" hashed before being used by the HMAC algorithm.") */
+               .plaintext = { 0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20,
+                       0x61, 0x20, 0x74, 0x65, 0x73, 0x74, 0x20, 0x75,
+                       0x73, 0x69, 0x6e, 0x67, 0x20, 0x61, 0x20, 0x6c,
+                       0x61, 0x72, 0x67, 0x65, 0x72, 0x20, 0x74, 0x68,
+                       0x61, 0x6e, 0x20, 0x62, 0x6c, 0x6f, 0x63, 0x6b,
+                       0x2d, 0x73, 0x69, 0x7a, 0x65, 0x20, 0x6b, 0x65,
+                       0x79, 0x20, 0x61, 0x6e, 0x64, 0x20, 0x61, 0x20,
+                       0x6c, 0x61, 0x72, 0x67, 0x65, 0x72, 0x20, 0x74,
+                       0x68, 0x61, 0x6e, 0x20, 0x62, 0x6c, 0x6f, 0x63,
+                       0x6b, 0x2d, 0x73, 0x69, 0x7a, 0x65, 0x20, 0x64,
+                       0x61, 0x74, 0x61, 0x2e, 0x20, 0x54, 0x68, 0x65,
+                       0x20, 0x6b, 0x65, 0x79, 0x20, 0x6e, 0x65, 0x65,
+                       0x64, 0x73, 0x20, 0x74, 0x6f, 0x20, 0x62, 0x65,
+                       0x20, 0x68, 0x61, 0x73, 0x68, 0x65, 0x64, 0x20,
+                       0x62, 0x65, 0x66, 0x6f, 0x72, 0x65, 0x20, 0x62,
+                       0x65, 0x69, 0x6e, 0x67, 0x20, 0x75, 0x73, 0x65,
+                       0x64, 0x20, 0x62, 0x79, 0x20, 0x74, 0x68, 0x65,
+                       0x20, 0x48, 0x4d, 0x41, 0x43, 0x20, 0x61, 0x6c,
+                       0x67, 0x6f, 0x72, 0x69, 0x74, 0x68, 0x6d, 0x2e },
+               .psize  = 152,
+               .digest = { 0x3a, 0x85, 0x41, 0x66, 0xac, 0x5d, 0x9f, 0x02,
+                       0x3f, 0x54, 0xd5, 0x17, 0xd0, 0xb3, 0x9d, 0xbd,
+                       0x94, 0x67, 0x70, 0xdb, 0x9c, 0x2b, 0x95, 0xc9,
+                       0xf6, 0xf5, 0x65, 0xd1 },
+       },
+};
+
 /*
  * HMAC-SHA256 test vectors from
  * draft-ietf-ipsec-ciph-sha-256-01.txt
diff -uprN -X linux-2.6.24-rc1-vanilla/Documentation/dontdiff 
linux-2.6.24-rc1-vanilla/include/crypto/sha.h 
linux-2.6.24-rc1/include/crypto/sha.h
--- linux-2.6.24-rc1-vanilla/include/crypto/sha.h       2007-11-05 
17:14:02.110724000 +0000
+++ linux-2.6.24-rc1/include/crypto/sha.h       2007-11-06 15:04:22.997509000 
+0000
@@ -8,6 +8,9 @@
 #define SHA1_DIGEST_SIZE        20
 #define SHA1_BLOCK_SIZE         64
 
+#define SHA224_DIGEST_SIZE     28
+#define SHA224_BLOCK_SIZE      64
+
 #define SHA256_DIGEST_SIZE      32
 #define SHA256_BLOCK_SIZE       64
 
@@ -23,6 +26,15 @@
 #define SHA1_H3                0x10325476UL
 #define SHA1_H4                0xc3d2e1f0UL
 
+#define SHA224_H0      0xc1059ed8UL
+#define SHA224_H1      0x367cd507UL
+#define SHA224_H2      0x3070dd17UL
+#define SHA224_H3      0xf70e5939UL
+#define SHA224_H4      0xffc00b31UL
+#define SHA224_H5      0x68581511UL
+#define SHA224_H6      0x64f98fa7UL
+#define SHA224_H7      0xbefa4fa4UL
+
 #define SHA256_H0      0x6a09e667UL
 #define SHA256_H1      0xbb67ae85UL
 #define SHA256_H2      0x3c6ef372UL

Signed-off-by: Jonathan Lynch <[EMAIL PROTECTED]>
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