mmc-utils: RPMB: add HMAC SHA256 support

RPMB requires digital signature of the message.  Take the implementation
of HMAC SHA256 from this place https://github.com/ogay/hmac.git



Actually this is BSD license, IANAL but according to my understanding
nothing terrible will happen if we provide all the original copyrights.
Signed-off-by: Roman Pen <r.peniaev@gmail.com>
Cc: Ben Gardiner <bengardiner@nanometrics.ca>
Signed-off-by: Chris Ball <chris@printf.net>

3rdparty/hmac_sha/hmac_sha2.c

+/*
+ * HMAC-SHA-224/256/384/512 implementation
+ * Last update: 06/15/2005
+ * Issue date:  06/15/2005
+ *
+ * Since this code has been incorporated into a GPLv2 project, it is
+ * distributed under GPLv2 inside mmc-utils.  The original BSD license
+ * that the code was released under is included below for clarity.
+ *
+ * Copyright (C) 2005 Olivier Gay <olivier.gay@a3.epfl.ch>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <string.h>
+
+#include "hmac_sha2.h"
+
+/* HMAC-SHA-224 functions */
+
+void hmac_sha224_init(hmac_sha224_ctx *ctx, const unsigned char *key,
+                      unsigned int key_size)
+{
+    unsigned int fill;
+    unsigned int num;
+
+    const unsigned char *key_used;
+    unsigned char key_temp[SHA224_DIGEST_SIZE];
+    int i;
+
+    if (key_size == SHA224_BLOCK_SIZE) {
+        key_used = key;
+        num = SHA224_BLOCK_SIZE;
+    } else {
+        if (key_size > SHA224_BLOCK_SIZE){
+            num = SHA224_DIGEST_SIZE;
+            sha224(key, key_size, key_temp);
+            key_used = key_temp;
+        } else { /* key_size > SHA224_BLOCK_SIZE */
+            key_used = key;
+            num = key_size;
+        }
+        fill = SHA224_BLOCK_SIZE - num;
+
+        memset(ctx->block_ipad + num, 0x36, fill);
+        memset(ctx->block_opad + num, 0x5c, fill);
+    }
+
+    for (i = 0; i < (int) num; i++) {
+        ctx->block_ipad[i] = key_used[i] ^ 0x36;
+        ctx->block_opad[i] = key_used[i] ^ 0x5c;
+    }
+
+    sha224_init(&ctx->ctx_inside);
+    sha224_update(&ctx->ctx_inside, ctx->block_ipad, SHA224_BLOCK_SIZE);
+
+    sha224_init(&ctx->ctx_outside);
+    sha224_update(&ctx->ctx_outside, ctx->block_opad,
+                  SHA224_BLOCK_SIZE);
+
+    /* for hmac_reinit */
+    memcpy(&ctx->ctx_inside_reinit, &ctx->ctx_inside,
+           sizeof(sha224_ctx));
+    memcpy(&ctx->ctx_outside_reinit, &ctx->ctx_outside,
+           sizeof(sha224_ctx));
+}
+
+void hmac_sha224_reinit(hmac_sha224_ctx *ctx)
+{
+    memcpy(&ctx->ctx_inside, &ctx->ctx_inside_reinit,
+           sizeof(sha224_ctx));
+    memcpy(&ctx->ctx_outside, &ctx->ctx_outside_reinit,
+           sizeof(sha224_ctx));
+}
+
+void hmac_sha224_update(hmac_sha224_ctx *ctx, const unsigned char *message,
+                        unsigned int message_len)
+{
+    sha224_update(&ctx->ctx_inside, message, message_len);
+}
+
+void hmac_sha224_final(hmac_sha224_ctx *ctx, unsigned char *mac,
+                       unsigned int mac_size)
+{
+    unsigned char digest_inside[SHA224_DIGEST_SIZE];
+    unsigned char mac_temp[SHA224_DIGEST_SIZE];
+
+    sha224_final(&ctx->ctx_inside, digest_inside);
+    sha224_update(&ctx->ctx_outside, digest_inside, SHA224_DIGEST_SIZE);
+    sha224_final(&ctx->ctx_outside, mac_temp);
+    memcpy(mac, mac_temp, mac_size);
+}
+
+void hmac_sha224(const unsigned char *key, unsigned int key_size,
+          const unsigned char *message, unsigned int message_len,
+          unsigned char *mac, unsigned mac_size)
+{
+    hmac_sha224_ctx ctx;
+
+    hmac_sha224_init(&ctx, key, key_size);
+    hmac_sha224_update(&ctx, message, message_len);
+    hmac_sha224_final(&ctx, mac, mac_size);
+}
+
+/* HMAC-SHA-256 functions */
+
+void hmac_sha256_init(hmac_sha256_ctx *ctx, const unsigned char *key,
+                      unsigned int key_size)
+{
+    unsigned int fill;
+    unsigned int num;
+
+    const unsigned char *key_used;
+    unsigned char key_temp[SHA256_DIGEST_SIZE];
+    int i;
+
+    if (key_size == SHA256_BLOCK_SIZE) {
+        key_used = key;
+        num = SHA256_BLOCK_SIZE;
+    } else {
+        if (key_size > SHA256_BLOCK_SIZE){
+            num = SHA256_DIGEST_SIZE;
+            sha256(key, key_size, key_temp);
+            key_used = key_temp;
+        } else { /* key_size > SHA256_BLOCK_SIZE */
+            key_used = key;
+            num = key_size;
+        }
+        fill = SHA256_BLOCK_SIZE - num;
+
+        memset(ctx->block_ipad + num, 0x36, fill);
+        memset(ctx->block_opad + num, 0x5c, fill);
+    }
+
+    for (i = 0; i < (int) num; i++) {
+        ctx->block_ipad[i] = key_used[i] ^ 0x36;
+        ctx->block_opad[i] = key_used[i] ^ 0x5c;
+    }
+
+    sha256_init(&ctx->ctx_inside);
+    sha256_update(&ctx->ctx_inside, ctx->block_ipad, SHA256_BLOCK_SIZE);
+
+    sha256_init(&ctx->ctx_outside);
+    sha256_update(&ctx->ctx_outside, ctx->block_opad,
+                  SHA256_BLOCK_SIZE);
+
+    /* for hmac_reinit */
+    memcpy(&ctx->ctx_inside_reinit, &ctx->ctx_inside,
+           sizeof(sha256_ctx));
+    memcpy(&ctx->ctx_outside_reinit, &ctx->ctx_outside,
+           sizeof(sha256_ctx));
+}
+
+void hmac_sha256_reinit(hmac_sha256_ctx *ctx)
+{
+    memcpy(&ctx->ctx_inside, &ctx->ctx_inside_reinit,
+           sizeof(sha256_ctx));
+    memcpy(&ctx->ctx_outside, &ctx->ctx_outside_reinit,
+           sizeof(sha256_ctx));
+}
+
+void hmac_sha256_update(hmac_sha256_ctx *ctx, const unsigned char *message,
+                        unsigned int message_len)
+{
+    sha256_update(&ctx->ctx_inside, message, message_len);
+}
+
+void hmac_sha256_final(hmac_sha256_ctx *ctx, unsigned char *mac,
+                       unsigned int mac_size)
+{
+    unsigned char digest_inside[SHA256_DIGEST_SIZE];
+    unsigned char mac_temp[SHA256_DIGEST_SIZE];
+
+    sha256_final(&ctx->ctx_inside, digest_inside);
+    sha256_update(&ctx->ctx_outside, digest_inside, SHA256_DIGEST_SIZE);
+    sha256_final(&ctx->ctx_outside, mac_temp);
+    memcpy(mac, mac_temp, mac_size);
+}
+
+void hmac_sha256(const unsigned char *key, unsigned int key_size,
+          const unsigned char *message, unsigned int message_len,
+          unsigned char *mac, unsigned mac_size)
+{
+    hmac_sha256_ctx ctx;
+
+    hmac_sha256_init(&ctx, key, key_size);
+    hmac_sha256_update(&ctx, message, message_len);
+    hmac_sha256_final(&ctx, mac, mac_size);
+}
+
+/* HMAC-SHA-384 functions */
+
+void hmac_sha384_init(hmac_sha384_ctx *ctx, const unsigned char *key,
+                      unsigned int key_size)
+{
+    unsigned int fill;
+    unsigned int num;
+
+    const unsigned char *key_used;
+    unsigned char key_temp[SHA384_DIGEST_SIZE];
+    int i;
+
+    if (key_size == SHA384_BLOCK_SIZE) {
+        key_used = key;
+        num = SHA384_BLOCK_SIZE;
+    } else {
+        if (key_size > SHA384_BLOCK_SIZE){
+            num = SHA384_DIGEST_SIZE;
+            sha384(key, key_size, key_temp);
+            key_used = key_temp;
+        } else { /* key_size > SHA384_BLOCK_SIZE */
+            key_used = key;
+            num = key_size;
+        }
+        fill = SHA384_BLOCK_SIZE - num;
+
+        memset(ctx->block_ipad + num, 0x36, fill);
+        memset(ctx->block_opad + num, 0x5c, fill);
+    }
+
+    for (i = 0; i < (int) num; i++) {
+        ctx->block_ipad[i] = key_used[i] ^ 0x36;
+        ctx->block_opad[i] = key_used[i] ^ 0x5c;
+    }
+
+    sha384_init(&ctx->ctx_inside);
+    sha384_update(&ctx->ctx_inside, ctx->block_ipad, SHA384_BLOCK_SIZE);
+
+    sha384_init(&ctx->ctx_outside);
+    sha384_update(&ctx->ctx_outside, ctx->block_opad,
+                  SHA384_BLOCK_SIZE);
+
+    /* for hmac_reinit */
+    memcpy(&ctx->ctx_inside_reinit, &ctx->ctx_inside,
+           sizeof(sha384_ctx));
+    memcpy(&ctx->ctx_outside_reinit, &ctx->ctx_outside,
+           sizeof(sha384_ctx));
+}
+
+void hmac_sha384_reinit(hmac_sha384_ctx *ctx)
+{
+    memcpy(&ctx->ctx_inside, &ctx->ctx_inside_reinit,
+           sizeof(sha384_ctx));
+    memcpy(&ctx->ctx_outside, &ctx->ctx_outside_reinit,
+           sizeof(sha384_ctx));
+}
+
+void hmac_sha384_update(hmac_sha384_ctx *ctx, const unsigned char *message,
+                        unsigned int message_len)
+{
+    sha384_update(&ctx->ctx_inside, message, message_len);
+}
+
+void hmac_sha384_final(hmac_sha384_ctx *ctx, unsigned char *mac,
+                       unsigned int mac_size)
+{
+    unsigned char digest_inside[SHA384_DIGEST_SIZE];
+    unsigned char mac_temp[SHA384_DIGEST_SIZE];
+
+    sha384_final(&ctx->ctx_inside, digest_inside);
+    sha384_update(&ctx->ctx_outside, digest_inside, SHA384_DIGEST_SIZE);
+    sha384_final(&ctx->ctx_outside, mac_temp);
+    memcpy(mac, mac_temp, mac_size);
+}
+
+void hmac_sha384(const unsigned char *key, unsigned int key_size,
+          const unsigned char *message, unsigned int message_len,
+          unsigned char *mac, unsigned mac_size)
+{
+    hmac_sha384_ctx ctx;
+
+    hmac_sha384_init(&ctx, key, key_size);
+    hmac_sha384_update(&ctx, message, message_len);
+    hmac_sha384_final(&ctx, mac, mac_size);
+}
+
+/* HMAC-SHA-512 functions */
+
+void hmac_sha512_init(hmac_sha512_ctx *ctx, const unsigned char *key,
+                      unsigned int key_size)
+{
+    unsigned int fill;
+    unsigned int num;
+
+    const unsigned char *key_used;
+    unsigned char key_temp[SHA512_DIGEST_SIZE];
+    int i;
+
+    if (key_size == SHA512_BLOCK_SIZE) {
+        key_used = key;
+        num = SHA512_BLOCK_SIZE;
+    } else {
+        if (key_size > SHA512_BLOCK_SIZE){
+            num = SHA512_DIGEST_SIZE;
+            sha512(key, key_size, key_temp);
+            key_used = key_temp;
+        } else { /* key_size > SHA512_BLOCK_SIZE */
+            key_used = key;
+            num = key_size;
+        }
+        fill = SHA512_BLOCK_SIZE - num;
+
+        memset(ctx->block_ipad + num, 0x36, fill);
+        memset(ctx->block_opad + num, 0x5c, fill);
+    }
+
+    for (i = 0; i < (int) num; i++) {
+        ctx->block_ipad[i] = key_used[i] ^ 0x36;
+        ctx->block_opad[i] = key_used[i] ^ 0x5c;
+    }
+
+    sha512_init(&ctx->ctx_inside);
+    sha512_update(&ctx->ctx_inside, ctx->block_ipad, SHA512_BLOCK_SIZE);
+
+    sha512_init(&ctx->ctx_outside);
+    sha512_update(&ctx->ctx_outside, ctx->block_opad,
+                  SHA512_BLOCK_SIZE);
+
+    /* for hmac_reinit */
+    memcpy(&ctx->ctx_inside_reinit, &ctx->ctx_inside,
+           sizeof(sha512_ctx));
+    memcpy(&ctx->ctx_outside_reinit, &ctx->ctx_outside,
+           sizeof(sha512_ctx));
+}
+
+void hmac_sha512_reinit(hmac_sha512_ctx *ctx)
+{
+    memcpy(&ctx->ctx_inside, &ctx->ctx_inside_reinit,
+           sizeof(sha512_ctx));
+    memcpy(&ctx->ctx_outside, &ctx->ctx_outside_reinit,
+           sizeof(sha512_ctx));
+}
+
+void hmac_sha512_update(hmac_sha512_ctx *ctx, const unsigned char *message,
+                        unsigned int message_len)
+{
+    sha512_update(&ctx->ctx_inside, message, message_len);
+}
+
+void hmac_sha512_final(hmac_sha512_ctx *ctx, unsigned char *mac,
+                       unsigned int mac_size)
+{
+    unsigned char digest_inside[SHA512_DIGEST_SIZE];
+    unsigned char mac_temp[SHA512_DIGEST_SIZE];
+
+    sha512_final(&ctx->ctx_inside, digest_inside);
+    sha512_update(&ctx->ctx_outside, digest_inside, SHA512_DIGEST_SIZE);
+    sha512_final(&ctx->ctx_outside, mac_temp);
+    memcpy(mac, mac_temp, mac_size);
+}
+
+void hmac_sha512(const unsigned char *key, unsigned int key_size,
+          const unsigned char *message, unsigned int message_len,
+          unsigned char *mac, unsigned mac_size)
+{
+    hmac_sha512_ctx ctx;
+
+    hmac_sha512_init(&ctx, key, key_size);
+    hmac_sha512_update(&ctx, message, message_len);
+    hmac_sha512_final(&ctx, mac, mac_size);
+}
+
+#ifdef TEST_VECTORS
+
+/* IETF Validation tests */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+void test(const char *vector, unsigned char *digest,
+          unsigned int digest_size)
+{
+    char output[2 * SHA512_DIGEST_SIZE + 1];
+    int i;
+
+    output[2 * digest_size] = '\0';
+
+    for (i = 0; i < (int) digest_size ; i++) {
+       sprintf(output + 2*i, "%02x", digest[i]);
+    }
+
+    printf("H: %s\n", output);
+    if (strcmp(vector, output)) {
+        fprintf(stderr, "Test failed.\n");
+        exit(1);
+    }
+}
+
+int main(void)
+{
+    static const char *vectors[] =
+    {
+        /* HMAC-SHA-224 */
+        "896fb1128abbdf196832107cd49df33f47b4b1169912ba4f53684b22",
+        "a30e01098bc6dbbf45690f3a7e9e6d0f8bbea2a39e6148008fd05e44",
+        "7fb3cb3588c6c1f6ffa9694d7d6ad2649365b0c1f65d69d1ec8333ea",
+        "6c11506874013cac6a2abc1bb382627cec6a90d86efc012de7afec5a",
+        "0e2aea68a90c8d37c988bcdb9fca6fa8",
+        "95e9a0db962095adaebe9b2d6f0dbce2d499f112f2d2b7273fa6870e",
+        "3a854166ac5d9f023f54d517d0b39dbd946770db9c2b95c9f6f565d1",
+        /* HMAC-SHA-256 */
+        "b0344c61d8db38535ca8afceaf0bf12b881dc200c9833da726e9376c2e32cff7",
+        "5bdcc146bf60754e6a042426089575c75a003f089d2739839dec58b964ec3843",
+        "773ea91e36800e46854db8ebd09181a72959098b3ef8c122d9635514ced565fe",
+        "82558a389a443c0ea4cc819899f2083a85f0faa3e578f8077a2e3ff46729665b",
+        "a3b6167473100ee06e0c796c2955552b",
+        "60e431591ee0b67f0d8a26aacbf5b77f8e0bc6213728c5140546040f0ee37f54",
+        "9b09ffa71b942fcb27635fbcd5b0e944bfdc63644f0713938a7f51535c3a35e2",
+        /* HMAC-SHA-384 */
+        "afd03944d84895626b0825f4ab46907f15f9dadbe4101ec682aa034c7cebc59c"
+        "faea9ea9076ede7f4af152e8b2fa9cb6",
+        "af45d2e376484031617f78d2b58a6b1b9c7ef464f5a01b47e42ec3736322445e"
+        "8e2240ca5e69e2c78b3239ecfab21649",
+        "88062608d3e6ad8a0aa2ace014c8a86f0aa635d947ac9febe83ef4e55966144b"
+        "2a5ab39dc13814b94e3ab6e101a34f27",
+        "3e8a69b7783c25851933ab6290af6ca77a9981480850009cc5577c6e1f573b4e"
+        "6801dd23c4a7d679ccf8a386c674cffb",
+        "3abf34c3503b2a23a46efc619baef897",
+        "4ece084485813e9088d2c63a041bc5b44f9ef1012a2b588f3cd11f05033ac4c6"
+        "0c2ef6ab4030fe8296248df163f44952",
+        "6617178e941f020d351e2f254e8fd32c602420feb0b8fb9adccebb82461e99c5"
+        "a678cc31e799176d3860e6110c46523e",
+        /* HMAC-SHA-512 */
+        "87aa7cdea5ef619d4ff0b4241a1d6cb02379f4e2ce4ec2787ad0b30545e17cde"
+        "daa833b7d6b8a702038b274eaea3f4e4be9d914eeb61f1702e696c203a126854",
+        "164b7a7bfcf819e2e395fbe73b56e0a387bd64222e831fd610270cd7ea250554"
+        "9758bf75c05a994a6d034f65f8f0e6fdcaeab1a34d4a6b4b636e070a38bce737",
+        "fa73b0089d56a284efb0f0756c890be9b1b5dbdd8ee81a3655f83e33b2279d39"
+        "bf3e848279a722c806b485a47e67c807b946a337bee8942674278859e13292fb",
+        "b0ba465637458c6990e5a8c5f61d4af7e576d97ff94b872de76f8050361ee3db"
+        "a91ca5c11aa25eb4d679275cc5788063a5f19741120c4f2de2adebeb10a298dd",
+        "415fad6271580a531d4179bc891d87a6",
+        "80b24263c7c1a3ebb71493c1dd7be8b49b46d1f41b4aeec1121b013783f8f352"
+        "6b56d037e05f2598bd0fd2215d6a1e5295e64f73f63f0aec8b915a985d786598",
+        "e37b6a775dc87dbaa4dfa9f96e5e3ffddebd71f8867289865df5a32d20cdc944"
+        "b6022cac3c4982b10d5eeb55c3e4de15134676fb6de0446065c97440fa8c6a58"
+    };
+
+    static char *messages[] =
+    {
+        "Hi There",
+        "what do ya want for nothing?",
+        NULL,
+        NULL,
+        "Test With Truncation",
+        "Test Using Larger Than Block-Size Key - Hash Key First",
+        "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."
+    };
+
+    unsigned char mac[SHA512_DIGEST_SIZE];
+    unsigned char *keys[7];
+    unsigned int keys_len[7] = {20, 4, 20, 25, 20, 131, 131};
+    unsigned int messages2and3_len = 50;
+    unsigned int mac_224_size, mac_256_size, mac_384_size, mac_512_size;
+    int i;
+
+    for (i = 0; i < 7; i++) {
+        keys[i] = malloc(keys_len[i]);
+        if (keys[i] == NULL) {
+            fprintf(stderr, "Can't allocate memory\n");
+            return 1;
+        }
+    }
+
+    memset(keys[0], 0x0b, keys_len[0]);
+    strcpy((char *) keys[1], "Jefe");
+    memset(keys[2], 0xaa, keys_len[2]);
+    for (i = 0; i < (int) keys_len[3]; i++)
+        keys[3][i] = (unsigned char) i + 1;
+    memset(keys[4], 0x0c, keys_len[4]);
+    memset(keys[5], 0xaa, keys_len[5]);
+    memset(keys[6], 0xaa, keys_len[6]);
+
+    messages[2] = malloc(messages2and3_len + 1);
+    messages[3] = malloc(messages2and3_len + 1);
+
+    if (messages[2] == NULL || messages[3] == NULL) {
+        fprintf(stderr, "Can't allocate memory\n");
+        return 1;
+    }
+
+    messages[2][messages2and3_len] = '\0';
+    messages[3][messages2and3_len] = '\0';
+
+    memset(messages[2], 0xdd, messages2and3_len);
+    memset(messages[3], 0xcd, messages2and3_len);
+
+    printf("HMAC-SHA-2 IETF Validation tests\n\n");
+
+    for (i = 0; i < 7; i++) {
+        if (i != 4) {
+            mac_224_size = SHA224_DIGEST_SIZE;
+            mac_256_size = SHA256_DIGEST_SIZE;
+            mac_384_size = SHA384_DIGEST_SIZE;
+            mac_512_size = SHA512_DIGEST_SIZE;
+        } else {
+            mac_224_size = 128 / 8; mac_256_size = 128 / 8;
+            mac_384_size = 128 / 8; mac_512_size = 128 / 8;
+        }
+
+        printf("Test %d:\n", i + 1);
+
+        hmac_sha224(keys[i], keys_len[i], (unsigned char *) messages[i],
+                    strlen(messages[i]), mac, mac_224_size);
+        test(vectors[i], mac, mac_224_size);
+        hmac_sha256(keys[i], keys_len[i], (unsigned char *) messages[i],
+                    strlen(messages[i]), mac, mac_256_size);
+        test(vectors[7 + i], mac, mac_256_size);
+        hmac_sha384(keys[i], keys_len[i], (unsigned char *) messages[i],
+                    strlen(messages[i]), mac, mac_384_size);
+        test(vectors[14 + i], mac, mac_384_size);
+        hmac_sha512(keys[i], keys_len[i], (unsigned char *) messages[i],
+                    strlen(messages[i]), mac, mac_512_size);
+        test(vectors[21 + i], mac, mac_512_size);
+    }
+
+    printf("All tests passed.\n");
+
+    return 0;
+}
+
+#endif /* TEST_VECTORS */
+

3rdparty/hmac_sha/hmac_sha2.h

+/*
+ * HMAC-SHA-224/256/384/512 implementation
+ * Last update: 06/15/2005
+ * Issue date:  06/15/2005
+ *
+ * Since this code has been incorporated into a GPLv2 project, it is
+ * distributed under GPLv2 inside mmc-utils.  The original BSD license
+ * that the code was released under is included below for clarity.
+ *
+ * Copyright (C) 2005 Olivier Gay <olivier.gay@a3.epfl.ch>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef HMAC_SHA2_H
+#define HMAC_SHA2_H
+
+#include "sha2.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    sha224_ctx ctx_inside;
+    sha224_ctx ctx_outside;
+
+    /* for hmac_reinit */
+    sha224_ctx ctx_inside_reinit;
+    sha224_ctx ctx_outside_reinit;
+
+    unsigned char block_ipad[SHA224_BLOCK_SIZE];
+    unsigned char block_opad[SHA224_BLOCK_SIZE];
+} hmac_sha224_ctx;
+
+typedef struct {
+    sha256_ctx ctx_inside;
+    sha256_ctx ctx_outside;
+
+    /* for hmac_reinit */
+    sha256_ctx ctx_inside_reinit;
+    sha256_ctx ctx_outside_reinit;
+
+    unsigned char block_ipad[SHA256_BLOCK_SIZE];
+    unsigned char block_opad[SHA256_BLOCK_SIZE];
+} hmac_sha256_ctx;
+
+typedef struct {
+    sha384_ctx ctx_inside;
+    sha384_ctx ctx_outside;
+
+    /* for hmac_reinit */
+    sha384_ctx ctx_inside_reinit;
+    sha384_ctx ctx_outside_reinit;
+
+    unsigned char block_ipad[SHA384_BLOCK_SIZE];
+    unsigned char block_opad[SHA384_BLOCK_SIZE];
+} hmac_sha384_ctx;
+
+typedef struct {
+    sha512_ctx ctx_inside;
+    sha512_ctx ctx_outside;
+
+    /* for hmac_reinit */
+    sha512_ctx ctx_inside_reinit;
+    sha512_ctx ctx_outside_reinit;
+
+    unsigned char block_ipad[SHA512_BLOCK_SIZE];
+    unsigned char block_opad[SHA512_BLOCK_SIZE];
+} hmac_sha512_ctx;
+
+void hmac_sha224_init(hmac_sha224_ctx *ctx, const unsigned char *key,
+                      unsigned int key_size);
+void hmac_sha224_reinit(hmac_sha224_ctx *ctx);
+void hmac_sha224_update(hmac_sha224_ctx *ctx, const unsigned char *message,
+                        unsigned int message_len);
+void hmac_sha224_final(hmac_sha224_ctx *ctx, unsigned char *mac,
+                       unsigned int mac_size);
+void hmac_sha224(const unsigned char *key, unsigned int key_size,
+                 const unsigned char *message, unsigned int message_len,
+                 unsigned char *mac, unsigned mac_size);
+
+void hmac_sha256_init(hmac_sha256_ctx *ctx, const unsigned char *key,
+                      unsigned int key_size);
+void hmac_sha256_reinit(hmac_sha256_ctx *ctx);
+void hmac_sha256_update(hmac_sha256_ctx *ctx, const unsigned char *message,
+                        unsigned int message_len);
+void hmac_sha256_final(hmac_sha256_ctx *ctx, unsigned char *mac,
+                       unsigned int mac_size);
+void hmac_sha256(const unsigned char *key, unsigned int key_size,
+                 const unsigned char *message, unsigned int message_len,
+                 unsigned char *mac, unsigned mac_size);
+
+void hmac_sha384_init(hmac_sha384_ctx *ctx, const unsigned char *key,
+                      unsigned int key_size);
+void hmac_sha384_reinit(hmac_sha384_ctx *ctx);
+void hmac_sha384_update(hmac_sha384_ctx *ctx, const unsigned char *message,
+                        unsigned int message_len);
+void hmac_sha384_final(hmac_sha384_ctx *ctx, unsigned char *mac,
+                       unsigned int mac_size);
+void hmac_sha384(const unsigned char *key, unsigned int key_size,
+                 const unsigned char *message, unsigned int message_len,
+                 unsigned char *mac, unsigned mac_size);
+
+void hmac_sha512_init(hmac_sha512_ctx *ctx, const unsigned char *key,
+                      unsigned int key_size);
+void hmac_sha512_reinit(hmac_sha512_ctx *ctx);
+void hmac_sha512_update(hmac_sha512_ctx *ctx, const unsigned char *message,
+                        unsigned int message_len);
+void hmac_sha512_final(hmac_sha512_ctx *ctx, unsigned char *mac,
+                       unsigned int mac_size);
+void hmac_sha512(const unsigned char *key, unsigned int key_size,
+                 const unsigned char *message, unsigned int message_len,
+                 unsigned char *mac, unsigned mac_size);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !HMAC_SHA2_H */
+

3rdparty/hmac_sha/sha2.h

+/*
+ * FIPS 180-2 SHA-224/256/384/512 implementation
+ * Last update: 02/02/2007
+ * Issue date:  04/30/2005
+ *
+ * Since this code has been incorporated into a GPLv2 project, it is
+ * distributed under GPLv2 inside mmc-utils.  The original BSD license
+ * that the code was released under is included below for clarity.
+ *
+ * Copyright (C) 2005, 2007 Olivier Gay <olivier.gay@a3.epfl.ch>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef SHA2_H
+#define SHA2_H
+
+#define SHA224_DIGEST_SIZE ( 224 / 8)
+#define SHA256_DIGEST_SIZE ( 256 / 8)
+#define SHA384_DIGEST_SIZE ( 384 / 8)
+#define SHA512_DIGEST_SIZE ( 512 / 8)
+
+#define SHA256_BLOCK_SIZE  ( 512 / 8)
+#define SHA512_BLOCK_SIZE  (1024 / 8)
+#define SHA384_BLOCK_SIZE  SHA512_BLOCK_SIZE
+#define SHA224_BLOCK_SIZE  SHA256_BLOCK_SIZE
+
+#ifndef SHA2_TYPES
+#define SHA2_TYPES
+typedef unsigned char uint8;
+typedef unsigned int  uint32;
+typedef unsigned long long uint64;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    unsigned int tot_len;
+    unsigned int len;
+    unsigned char block[2 * SHA256_BLOCK_SIZE];
+    uint32 h[8];
+} sha256_ctx;
+
+typedef struct {
+    unsigned int tot_len;
+    unsigned int len;
+    unsigned char block[2 * SHA512_BLOCK_SIZE];
+    uint64 h[8];
+} sha512_ctx;
+
+typedef sha512_ctx sha384_ctx;
+typedef sha256_ctx sha224_ctx;
+
+void sha224_init(sha224_ctx *ctx);
+void sha224_update(sha224_ctx *ctx, const unsigned char *message,
+                   unsigned int len);
+void sha224_final(sha224_ctx *ctx, unsigned char *digest);
+void sha224(const unsigned char *message, unsigned int len,
+            unsigned char *digest);
+
+void sha256_init(sha256_ctx * ctx);
+void sha256_update(sha256_ctx *ctx, const unsigned char *message,
+                   unsigned int len);
+void sha256_final(sha256_ctx *ctx, unsigned char *digest);
+void sha256(const unsigned char *message, unsigned int len,
+            unsigned char *digest);
+
+void sha384_init(sha384_ctx *ctx);
+void sha384_update(sha384_ctx *ctx, const unsigned char *message,
+                   unsigned int len);
+void sha384_final(sha384_ctx *ctx, unsigned char *digest);
+void sha384(const unsigned char *message, unsigned int len,
+            unsigned char *digest);
+
+void sha512_init(sha512_ctx *ctx);
+void sha512_update(sha512_ctx *ctx, const unsigned char *message,
+                   unsigned int len);
+void sha512_final(sha512_ctx *ctx, unsigned char *digest);
+void sha512(const unsigned char *message, unsigned int len,
+            unsigned char *digest);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !SHA2_H */
+

Makefile

 CC ?= gcc
 AM_CFLAGS = -D_FILE_OFFSET_BITS=64 -D_FORTIFY_SOURCE=2
 CFLAGS ?= -g -O2
-objects = mmc.o mmc_cmds.o
+objects = \
+	mmc.o \
+	mmc_cmds.o \
+	3rdparty/hmac_sha/hmac_sha2.o \
+	3rdparty/hmac_sha/sha2.o
 
 CHECKFLAGS = -Wall -Werror -Wuninitialized -Wundef
 
@@ -28,7 +32,7 @@ all: $(progs) manpages
 ifdef C
 	$(check) $<
 endif
-	$(CC) $(CPPFLAGS) $(CFLAGS) $(DEPFLAGS) -c $<
+	$(CC) $(CPPFLAGS) $(CFLAGS) $(DEPFLAGS) -c $< -o $@
 
 mmc: $(objects)
 	$(CC) $(CFLAGS) -o $@ $(objects) $(LDFLAGS) $(LIBS)