ext: Pull in tinycrypt v0.2.6

Zephyr 1.9 moves to tinycrypt v0.2.7.  This introduces a breaking API
change.  This makes things challenging for mcuboot, which would like to
be able to work across multiple platforms.

To help with this, bring in the last working version of Tinycrypt v0.2.6
from https://github.com/01org/tinycrypt.  Tinycrypt is released under a
3-clause BSD-style license, with parts under the micro-ecc license,
which is a 2-clause license.  Please see ext/tinycrypt/LICENSE for
details.

Signed-off-by: David Brown <david.brown@linaro.org>
diff --git a/ext/tinycrypt/tests/test_hmac.c b/ext/tinycrypt/tests/test_hmac.c
new file mode 100644
index 0000000..38ccf9f
--- /dev/null
+++ b/ext/tinycrypt/tests/test_hmac.c
@@ -0,0 +1,360 @@
+/*  test_hmac.c - TinyCrypt implementation of some HMAC tests */
+
+/*
+ *  Copyright (C) 2015 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - 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.
+ *
+ *    - Neither the name of Intel Corporation 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+ */
+
+/*
+  DESCRIPTION
+  This module tests the following HMAC routines:
+
+  Scenarios tested include:
+  - HMAC tests (RFC 4231 test vectors)
+*/
+
+#include <tinycrypt/hmac.h>
+#include <tinycrypt/sha256.h>
+#include <tinycrypt/constants.h>
+#include <test_utils.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+
+uint32_t do_hmac_test(TCHmacState_t h, uint32_t testnum, const uint8_t *data,
+		      size_t datalen, const uint8_t *expected,
+		      size_t expectedlen)
+{
+        uint8_t digest[32];
+        uint32_t result = TC_PASS;
+
+        (void)tc_hmac_init(h);
+        (void)tc_hmac_update(h, data, datalen);
+        (void)tc_hmac_final(digest, TC_SHA256_DIGEST_SIZE, h);
+        result = check_result(testnum, expected, expectedlen,
+			      digest, sizeof(digest));
+        return result;
+}
+
+/*
+ * NIST test vectors for encryption.
+ */
+uint32_t test_1(void)
+{
+        uint32_t result = TC_PASS;
+
+        TC_PRINT("HMAC %s:\n", __func__);
+
+        const uint8_t key[20] = {
+	0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
+	0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b
+        };
+        const uint8_t data[8] = {
+	0x48, 0x69, 0x20, 0x54, 0x68, 0x65, 0x72, 0x65
+        };
+        const uint8_t expected[32] = {
+	0xb0, 0x34, 0x4c, 0x61, 0xd8, 0xdb, 0x38, 0x53, 0x5c, 0xa8, 0xaf, 0xce,
+	0xaf, 0x0b, 0xf1, 0x2b, 0x88, 0x1d, 0xc2, 0x00, 0xc9, 0x83, 0x3d, 0xa7,
+	0x26, 0xe9, 0x37, 0x6c, 0x2e, 0x32, 0xcf, 0xf7
+        };
+        struct tc_hmac_state_struct h;
+
+        (void)memset(&h, 0x00, sizeof(h));
+        (void)tc_hmac_set_key(&h, key, sizeof(key));
+        result = do_hmac_test(&h, 1, data, sizeof(data),
+			      expected, sizeof(expected));
+        TC_END_RESULT(result);
+        return result;
+}
+
+uint32_t test_2(void)
+{
+        uint32_t result = TC_PASS;
+
+        TC_PRINT("HMAC %s:\n", __func__);
+        const uint8_t key[4] = {
+                0x4a, 0x65, 0x66, 0x65
+        };
+        const uint8_t data[28] = {
+	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
+        };
+        const uint8_t expected[32] = {
+	0x5b, 0xdc, 0xc1, 0x46, 0xbf, 0x60, 0x75, 0x4e, 0x6a, 0x04, 0x24, 0x26,
+	0x08, 0x95, 0x75, 0xc7, 0x5a, 0x00, 0x3f, 0x08, 0x9d, 0x27, 0x39, 0x83,
+	0x9d, 0xec, 0x58, 0xb9, 0x64, 0xec, 0x38, 0x43
+        };
+        struct tc_hmac_state_struct h;
+
+        (void)memset(&h, 0x00, sizeof(h));
+        (void)tc_hmac_set_key(&h, key, sizeof(key));
+
+        result = do_hmac_test(&h, 2, data, sizeof(data),
+			      expected, sizeof(expected));
+        TC_END_RESULT(result);
+        return result;
+}
+
+uint32_t test_3(void)
+{
+        uint32_t result = TC_PASS;
+
+        TC_PRINT("HMAC %s:\n", __func__);
+        const uint8_t key[20] = {
+	0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+	0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa
+        };
+        const uint8_t data[50] = {
+	0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
+	0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
+	0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
+	0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd,
+	0xdd, 0xdd
+        };
+        const uint8_t expected[32] = {
+	0x77, 0x3e, 0xa9, 0x1e, 0x36, 0x80, 0x0e, 0x46, 0x85, 0x4d, 0xb8, 0xeb,
+	0xd0, 0x91, 0x81, 0xa7, 0x29, 0x59, 0x09, 0x8b, 0x3e, 0xf8, 0xc1, 0x22,
+	0xd9, 0x63, 0x55, 0x14, 0xce, 0xd5, 0x65, 0xfe
+        };
+        struct tc_hmac_state_struct h;
+
+        (void)memset(&h, 0x00, sizeof(h));
+        (void)tc_hmac_set_key(&h, key, sizeof(key));
+
+        result = do_hmac_test(&h, 3, data, sizeof(data),
+			      expected, sizeof(expected));
+        TC_END_RESULT(result);
+        return result;
+}
+
+uint32_t test_4(void)
+{
+        uint32_t result = TC_PASS;
+
+        TC_PRINT("HMAC %s:\n", __func__);
+        const uint8_t key[25] = {
+	0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
+	0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
+	0x19
+        };
+        const uint8_t data[50] = {
+	0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
+	0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
+	0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
+	0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd, 0xcd,
+	0xcd, 0xcd
+        };
+        const uint8_t expected[32] = {
+	0x82, 0x55, 0x8a, 0x38, 0x9a, 0x44, 0x3c, 0x0e, 0xa4, 0xcc, 0x81, 0x98,
+	0x99, 0xf2, 0x08, 0x3a, 0x85, 0xf0, 0xfa, 0xa3, 0xe5, 0x78, 0xf8, 0x07,
+	0x7a, 0x2e, 0x3f, 0xf4, 0x67, 0x29, 0x66, 0x5b
+        };
+        struct tc_hmac_state_struct h;
+
+        (void)memset(&h, 0x00, sizeof(h));
+        (void)tc_hmac_set_key(&h, key, sizeof(key));
+
+        result = do_hmac_test(&h, 4, data, sizeof(data),
+			      expected, sizeof(expected));
+        TC_END_RESULT(result);
+        return result;
+}
+
+uint32_t test_5(void)
+{
+        uint32_t result = TC_PASS;
+
+        TC_PRINT("HMAC %s:\n", __func__);
+        const uint8_t key[20] = {
+	0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
+	0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c
+        };
+        const uint8_t data[20] = {
+	0x54, 0x65, 0x73, 0x74, 0x20, 0x57, 0x69, 0x74, 0x68, 0x20, 0x54, 0x72,
+	0x75, 0x6e, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e
+        };
+        const uint8_t expected[32] = {
+	0xa3, 0xb6, 0x16, 0x74, 0x73, 0x10, 0x0e, 0xe0, 0x6e, 0x0c, 0x79, 0x6c,
+	0x29, 0x55, 0x55, 0x2b, 0xfa, 0x6f, 0x7c, 0x0a, 0x6a, 0x8a, 0xef, 0x8b,
+	0x93, 0xf8, 0x60, 0xaa, 0xb0, 0xcd, 0x20, 0xc5
+        };
+        struct tc_hmac_state_struct h;
+
+        (void)memset(&h, 0x00, sizeof(h));
+        (void)tc_hmac_set_key(&h, key, sizeof(key));
+
+        result = do_hmac_test(&h, 5, data, sizeof(data),
+			      expected, sizeof(expected));
+        TC_END_RESULT(result);
+        return result;
+}
+
+uint32_t test_6(void)
+{
+        uint32_t result = TC_PASS;
+
+        TC_PRINT("HMAC %s:\n", __func__);
+        const uint8_t key[131] = {
+	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
+        };
+        const uint8_t data[54] = {
+	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
+        };
+        const uint8_t expected[32] = {
+	0x60, 0xe4, 0x31, 0x59, 0x1e, 0xe0, 0xb6, 0x7f, 0x0d, 0x8a, 0x26, 0xaa,
+	0xcb, 0xf5, 0xb7, 0x7f, 0x8e, 0x0b, 0xc6, 0x21, 0x37, 0x28, 0xc5, 0x14,
+	0x05, 0x46, 0x04, 0x0f, 0x0e, 0xe3, 0x7f, 0x54
+        };
+        struct tc_hmac_state_struct h;
+
+        (void)memset(&h, 0x00, sizeof(h));
+        (void)tc_hmac_set_key(&h, key, sizeof(key));
+
+        result = do_hmac_test(&h, 6, data, sizeof(data),
+			      expected, sizeof(expected));
+        TC_END_RESULT(result);
+        return result;
+}
+
+uint32_t test_7(void)
+{
+        uint32_t result = TC_PASS;
+
+        TC_PRINT("HMAC %s:\n", __func__);
+        const uint8_t key[131] = {
+	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
+        };
+        const uint8_t data[152] = {
+	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
+        };
+        const uint8_t expected[32] = {
+	0x9b, 0x09, 0xff, 0xa7, 0x1b, 0x94, 0x2f, 0xcb, 0x27, 0x63, 0x5f, 0xbc,
+	0xd5, 0xb0, 0xe9, 0x44, 0xbf, 0xdc, 0x63, 0x64, 0x4f, 0x07, 0x13, 0x93,
+	0x8a, 0x7f, 0x51, 0x53, 0x5c, 0x3a, 0x35, 0xe2
+        };
+        struct tc_hmac_state_struct h;
+
+        (void)memset(&h, 0x00, sizeof(h));
+        (void)tc_hmac_set_key(&h, key, sizeof(key));
+
+        result = do_hmac_test(&h, 7, data, sizeof(data),
+			      expected, sizeof(expected));
+        TC_END_RESULT(result);
+        return result;
+}
+
+/*
+ * Main task to test AES
+ */
+int main(void)
+{
+        uint32_t result = TC_PASS;
+
+        TC_START("Performing HMAC tests (RFC4231 test vectors):");
+
+        result = test_1();
+        if (result == TC_FAIL) { /* terminate test */
+                TC_ERROR("HMAC test #1 failed.\n");
+                goto exitTest;
+        }
+        result = test_2();
+        if (result == TC_FAIL) { /* terminate test */
+                TC_ERROR("HMAC test #2 failed.\n");
+                goto exitTest;
+        }
+        result = test_3();
+        if (result == TC_FAIL) { /* terminate test */
+                TC_ERROR("HMAC test #3 failed.\n");
+                goto exitTest;
+        }
+        result = test_4();
+        if (result == TC_FAIL) { /* terminate test */
+                TC_ERROR("HMAC test #4 failed.\n");
+                goto exitTest;
+        }
+        result = test_5();
+        if (result == TC_FAIL) { /* terminate test */
+                TC_ERROR("HMAC test #5 failed.\n");
+                goto exitTest;
+        }
+        result = test_6();
+        if (result == TC_FAIL) { /* terminate test */
+                TC_ERROR("HMAC #6 test failed.\n");
+                goto exitTest;
+        }
+        result = test_7();
+        if (result == TC_FAIL) { /* terminate test */
+                TC_ERROR("HMAC test #7 failed.\n");
+                goto exitTest;
+        }
+
+        TC_PRINT("All HMAC tests succeeded!\n");
+
+exitTest:
+        TC_END_RESULT(result);
+        TC_END_REPORT(result);
+}