view libtomcrypt/src/mac/hmac/hmac_test.c @ 1790:42745af83b7d

Introduce extra delay before closing unauthenticated sessions To make it harder for attackers, introduce a delay to keep an unauthenticated session open a bit longer, thus blocking a connection slot until after the delay. Without this, while there is a limit on the amount of attempts an attacker can make at the same time (MAX_UNAUTH_PER_IP), the time taken by dropbear to handle one attempt is still short and thus for each of the allowed parallel attempts many attempts can be chained one after the other. The attempt rate is then: "MAX_UNAUTH_PER_IP / <process time of one attempt>". With the delay, this rate becomes: "MAX_UNAUTH_PER_IP / UNAUTH_CLOSE_DELAY".
author Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
date Wed, 15 Feb 2017 13:53:04 +0100
parents 6dba84798cd5
children
line wrap: on
line source

/* LibTomCrypt, modular cryptographic library -- Tom St Denis
 *
 * LibTomCrypt is a library that provides various cryptographic
 * algorithms in a highly modular and flexible manner.
 *
 * The library is free for all purposes without any express
 * guarantee it works.
 */
#include "tomcrypt.h"

/**
  @file hmac_test.c
  HMAC support, self-test, Tom St Denis/Dobes Vandermeer/Steffen Jaeckel
*/

#ifdef LTC_HMAC

#define LTC_HMAC_BLOCKSIZE hash_descriptor[hash].blocksize

/*
    TEST CASES SOURCE:

Network Working Group                                          P. Cheng
Request for Comments: 2202                                          IBM
Category: Informational                                        R. Glenn
                                                                   NIST
                                                         September 1997

                 Test Cases for HMAC-MD5 and HMAC-SHA-1

*******************************************************************************

Network Working Group                                            J. Kapp
Request for Comments: 2286                           Reaper Technologies
Category: Informational                                    February 1998

            Test Cases for HMAC-RIPEMD160 and HMAC-RIPEMD128

*******************************************************************************

Network Working Group                                         M. Nystrom
Request for Comments: 4231                                  RSA Security
Category: Standards Track                                  December 2005

     Identifiers and Test Vectors for HMAC-SHA-224, HMAC-SHA-256,
                     HMAC-SHA-384, and HMAC-SHA-512
*/

/**
  HMAC self-test
  @return CRYPT_OK if successful, CRYPT_NOP if tests have been disabled.
*/
int hmac_test(void)
{
 #ifndef LTC_TEST
    return CRYPT_NOP;
 #else
    unsigned char digest[MAXBLOCKSIZE];
    int i;

    static const unsigned char hmac_test_case_keys[][136] = {
        { /* 1 */
            0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
            0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b,
            0x0b, 0x0b, 0x0b, 0x0b
        },
#ifdef LTC_TEST_EXT
        { /* 2 */
            0x4a, 0x65, 0x66, 0x65
        },
        { /* 4 */
            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
        },
        { /* 5 */
            0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
            0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c,
            0x0c, 0x0c, 0x0c, 0x0c
        },
        { /* 3, 6, 7 */
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,

            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,

            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,

            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
            0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa
        }
#endif /* LTC_TEST_EXT */
    };


    static const unsigned char hmac_test_case_data[][153] = {
        {
            "Hi There"
        },
#ifdef LTC_TEST_EXT
        {
            "what do ya want for nothing?"
        },
        {
            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
        },
        {
            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
        },
        {
            "Test With Truncation"
        },
        {
            "Test Using Larger Than Block-Size Key - Hash Key First"
        },
        {
            "Test Using Larger Than Block-Size Key and Larger Than One Block-Size Data"
        },
        {
            "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."
        }
#endif /* LTC_TEST_EXT */
    };

    static const struct hmac_test_case {
        const char *num;
        const char *algo;
        const unsigned char *key;
        unsigned long keylen;
        const unsigned char *data;
        unsigned long datalen;
        unsigned char digest[MAXBLOCKSIZE];
    } cases[] = {
        /*
        RFC 2202 3. Test Cases for HMAC-SHA-1
        */
        { "rfc2202 3.1", "sha1",
            hmac_test_case_keys[0], 20,
            hmac_test_case_data[0], 8,
            {0xb6, 0x17, 0x31, 0x86, 0x55, 0x05, 0x72, 0x64,
             0xe2, 0x8b, 0xc0, 0xb6, 0xfb, 0x37, 0x8c, 0x8e,
             0xf1, 0x46, 0xbe, 0x00} },

#ifdef LTC_TEST_EXT
        { "rfc2202 3.2", "sha1",
            hmac_test_case_keys[1], 4,
            hmac_test_case_data[1], 28,
            {0xef, 0xfc, 0xdf, 0x6a, 0xe5, 0xeb, 0x2f, 0xa2,
             0xd2, 0x74, 0x16, 0xd5, 0xf1, 0x84, 0xdf, 0x9c,
             0x25, 0x9a, 0x7c, 0x79} },

        { "rfc2202 3.3", "sha1",
            hmac_test_case_keys[4], 20,
            hmac_test_case_data[2], 50,
            {0x12, 0x5d, 0x73, 0x42, 0xb9, 0xac, 0x11, 0xcd,
             0x91, 0xa3, 0x9a, 0xf4, 0x8a, 0xa1, 0x7b, 0x4f,
             0x63, 0xf1, 0x75, 0xd3} },

        { "rfc2202 3.4", "sha1",
            hmac_test_case_keys[2], 25,
            hmac_test_case_data[3], 50,
            {0x4c, 0x90, 0x07, 0xf4, 0x02, 0x62, 0x50, 0xc6,
             0xbc, 0x84, 0x14, 0xf9, 0xbf, 0x50, 0xc8, 0x6c,
             0x2d, 0x72, 0x35, 0xda} },

        { "rfc2202 3.5", "sha1",
            hmac_test_case_keys[3], 20,
            hmac_test_case_data[4], 20,
            {0x4c, 0x1a, 0x03, 0x42, 0x4b, 0x55, 0xe0, 0x7f, 0xe7, 0xf2,
             0x7b, 0xe1, 0xd5, 0x8b, 0xb9, 0x32, 0x4a, 0x9a, 0x5a, 0x04} },

        { "rfc2202 3.6", "sha1",
            hmac_test_case_keys[4], 80,
            hmac_test_case_data[5], 54,
            {0xaa, 0x4a, 0xe5, 0xe1, 0x52, 0x72, 0xd0, 0x0e,
             0x95, 0x70, 0x56, 0x37, 0xce, 0x8a, 0x3b, 0x55,
             0xed, 0x40, 0x21, 0x12} },

        { "rfc2202 3.7", "sha1",
            hmac_test_case_keys[4], 80,
           hmac_test_case_data[6], 73,
            {0xe8, 0xe9, 0x9d, 0x0f, 0x45, 0x23, 0x7d, 0x78, 0x6d,
             0x6b, 0xba, 0xa7, 0x96, 0x5c, 0x78, 0x08, 0xbb, 0xff, 0x1a, 0x91} },
#endif /* LTC_TEST_EXT */

        /*
        RFC 2202 2. Test Cases for HMAC-MD5
        */
        { "rfc2202 2.1", "md5",
            hmac_test_case_keys[0], 16,
            hmac_test_case_data[0], 8,
            {0x92, 0x94, 0x72, 0x7a, 0x36, 0x38, 0xbb, 0x1c,
             0x13, 0xf4, 0x8e, 0xf8, 0x15, 0x8b, 0xfc, 0x9d}  },

#ifdef LTC_TEST_EXT
        { "rfc2202 2.2", "md5",
            hmac_test_case_keys[1], 4,
            hmac_test_case_data[1], 28,
            {0x75, 0x0c, 0x78, 0x3e, 0x6a, 0xb0, 0xb5, 0x03,
             0xea, 0xa8, 0x6e, 0x31, 0x0a, 0x5d, 0xb7, 0x38} },

        { "rfc2202 2.3", "md5",
            hmac_test_case_keys[4], 16,
            hmac_test_case_data[2], 50,
            {0x56, 0xbe, 0x34, 0x52, 0x1d, 0x14, 0x4c, 0x88,
             0xdb, 0xb8, 0xc7, 0x33, 0xf0, 0xe8, 0xb3, 0xf6} },

        { "rfc2202 2.4", "md5",
            hmac_test_case_keys[2], 25,
            hmac_test_case_data[3], 50,
            {0x69, 0x7e, 0xaf, 0x0a, 0xca, 0x3a, 0x3a, 0xea,
             0x3a, 0x75, 0x16, 0x47, 0x46, 0xff, 0xaa, 0x79} },

        { "rfc2202 2.5", "md5",
            hmac_test_case_keys[3], 16,
            hmac_test_case_data[4], 20,
            {0x56, 0x46, 0x1e, 0xf2, 0x34, 0x2e, 0xdc, 0x00,
             0xf9, 0xba, 0xb9, 0x95, 0x69, 0x0e, 0xfd, 0x4c} },

        { "rfc2202 2.6", "md5",
            hmac_test_case_keys[4], 80,
            hmac_test_case_data[5], 54,
            {0x6b, 0x1a, 0xb7, 0xfe, 0x4b, 0xd7, 0xbf, 0x8f,
             0x0b, 0x62, 0xe6, 0xce, 0x61, 0xb9, 0xd0, 0xcd} },

        { "rfc2202 2.7", "md5",
            hmac_test_case_keys[4], 80,
           hmac_test_case_data[6], 73,
            {0x6f, 0x63, 0x0f, 0xad, 0x67, 0xcd, 0xa0, 0xee,
             0x1f, 0xb1, 0xf5, 0x62, 0xdb, 0x3a, 0xa5, 0x3e} },
#endif /* LTC_TEST_EXT */

        /*
        RFC 2286 2. Test Cases for HMAC-RIPEMD160
        */
        { "rfc2286 2.1", "rmd160",
            hmac_test_case_keys[0], 20,
            hmac_test_case_data[0], 8,
            {0x24, 0xcb, 0x4b, 0xd6, 0x7d, 0x20, 0xfc, 0x1a,
             0x5d, 0x2e, 0xd7, 0x73, 0x2d, 0xcc, 0x39, 0x37,
             0x7f, 0x0a, 0x56, 0x68} },

#ifdef LTC_TEST_EXT
        { "rfc2286 2.2", "rmd160",
            hmac_test_case_keys[1], 4,
            hmac_test_case_data[1], 28,
            {0xdd, 0xa6, 0xc0, 0x21, 0x3a, 0x48, 0x5a, 0x9e,
             0x24, 0xf4, 0x74, 0x20, 0x64, 0xa7, 0xf0, 0x33,
             0xb4, 0x3c, 0x40, 0x69} },

        { "rfc2286 2.3", "rmd160",
            hmac_test_case_keys[4], 20,
            hmac_test_case_data[2], 50,
            {0xb0, 0xb1, 0x05, 0x36, 0x0d, 0xe7, 0x59, 0x96,
             0x0a, 0xb4, 0xf3, 0x52, 0x98, 0xe1, 0x16, 0xe2,
             0x95, 0xd8, 0xe7, 0xc1} },

        { "rfc2286 2.4", "rmd160",
            hmac_test_case_keys[2], 25,
            hmac_test_case_data[3], 50,
            {0xd5, 0xca, 0x86, 0x2f, 0x4d, 0x21, 0xd5, 0xe6,
             0x10, 0xe1, 0x8b, 0x4c, 0xf1, 0xbe, 0xb9, 0x7a,
             0x43, 0x65, 0xec, 0xf4} },

        { "rfc2286 2.5", "rmd160",
            hmac_test_case_keys[3], 20,
            hmac_test_case_data[4], 20,
            {0x76, 0x19, 0x69, 0x39, 0x78, 0xf9, 0x1d, 0x90,
             0x53, 0x9a, 0xe7, 0x86, 0x50, 0x0f, 0xf3, 0xd8,
             0xe0, 0x51, 0x8e, 0x39} },

        { "rfc2286 2.6", "rmd160",
            hmac_test_case_keys[4], 80,
            hmac_test_case_data[5], 54,
            {0x64, 0x66, 0xca, 0x07, 0xac, 0x5e, 0xac, 0x29,
             0xe1, 0xbd, 0x52, 0x3e, 0x5a, 0xda, 0x76, 0x05,
             0xb7, 0x91, 0xfd, 0x8b} },

        { "rfc2286 2.7", "rmd160",
            hmac_test_case_keys[4], 80,
            hmac_test_case_data[6], 73,
            {0x69, 0xea, 0x60, 0x79, 0x8d, 0x71, 0x61, 0x6c,
             0xce, 0x5f, 0xd0, 0x87, 0x1e, 0x23, 0x75, 0x4c,
             0xd7, 0x5d, 0x5a, 0x0a} },
#endif /* LTC_TEST_EXT */

        /*
        RFC 2286 3. Test Cases for HMAC-RIPEMD128
        */
        { "rfc2286 3.1", "rmd128",
            hmac_test_case_keys[0], 16,
            hmac_test_case_data[0], 8,
            {0xfb, 0xf6, 0x1f, 0x94, 0x92, 0xaa, 0x4b, 0xbf,
             0x81, 0xc1, 0x72, 0xe8, 0x4e, 0x07, 0x34, 0xdb} },

#ifdef LTC_TEST_EXT
        { "rfc2286 3.2", "rmd128",
            hmac_test_case_keys[1], 4,
            hmac_test_case_data[1], 28,
            {0x87, 0x5f, 0x82, 0x88, 0x62, 0xb6, 0xb3, 0x34,
             0xb4, 0x27, 0xc5, 0x5f, 0x9f, 0x7f, 0xf0, 0x9b} },

        { "rfc2286 3.3", "rmd128",
            hmac_test_case_keys[4], 16,
            hmac_test_case_data[2], 50,
            {0x09, 0xf0, 0xb2, 0x84, 0x6d, 0x2f, 0x54, 0x3d,
             0xa3, 0x63, 0xcb, 0xec, 0x8d, 0x62, 0xa3, 0x8d} },

        { "rfc2286 3.4", "rmd128",
            hmac_test_case_keys[2], 25,
            hmac_test_case_data[3], 50,
            {0xbd, 0xbb, 0xd7, 0xcf, 0x03, 0xe4, 0x4b, 0x5a,
             0xa6, 0x0a, 0xf8, 0x15, 0xbe, 0x4d, 0x22, 0x94} },

        { "rfc2286 3.5", "rmd128",
            hmac_test_case_keys[3], 16,
            hmac_test_case_data[4], 20,
            {0xe7, 0x98, 0x08, 0xf2, 0x4b, 0x25, 0xfd, 0x03,
             0x1c, 0x15, 0x5f, 0x0d, 0x55, 0x1d, 0x9a, 0x3a} },

        { "rfc2286 3.6", "rmd128",
            hmac_test_case_keys[4], 80,
            hmac_test_case_data[5], 54,
            {0xdc, 0x73, 0x29, 0x28, 0xde, 0x98, 0x10, 0x4a,
             0x1f, 0x59, 0xd3, 0x73, 0xc1, 0x50, 0xac, 0xbb} },

        { "rfc2286 3.7", "rmd128",
            hmac_test_case_keys[4], 80,
            hmac_test_case_data[6], 73,
            {0x5c, 0x6b, 0xec, 0x96, 0x79, 0x3e, 0x16, 0xd4,
             0x06, 0x90, 0xc2, 0x37, 0x63, 0x5f, 0x30, 0xc5} },
#endif /* LTC_TEST_EXT */

        /*
        RFC 4231 4. Test Vectors
        Ch. 4.6 with truncated output left out to simplify tests
        */
        { "rfc4231 4.2", "sha224",
            hmac_test_case_keys[0], 20,
            hmac_test_case_data[0], 8,
            {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} },

#ifdef LTC_TEST_EXT
        { "rfc4231 4.3", "sha224",
            hmac_test_case_keys[1], 4,
            hmac_test_case_data[1], 28,
            {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} },

        { "rfc4231 4.4", "sha224",
            hmac_test_case_keys[4], 20,
            hmac_test_case_data[2], 50,
            {0x7f, 0xb3, 0xcb, 0x35, 0x88, 0xc6, 0xc1, 0xf6,
             0xff, 0xa9, 0x69, 0x4d, 0x7d, 0x6a, 0xd2, 0x64,
             0x93, 0x65, 0xb0, 0xc1, 0xf6, 0x5d, 0x69, 0xd1,
             0xec, 0x83, 0x33, 0xea} },

        { "rfc4231 4.5", "sha224",
            hmac_test_case_keys[2], 25,
            hmac_test_case_data[3], 50,
            {0x6c, 0x11, 0x50, 0x68, 0x74, 0x01, 0x3c, 0xac,
             0x6a, 0x2a, 0xbc, 0x1b, 0xb3, 0x82, 0x62, 0x7c,
             0xec, 0x6a, 0x90, 0xd8, 0x6e, 0xfc, 0x01, 0x2d,
             0xe7, 0xaf, 0xec, 0x5a} },

        { "rfc4231 4.7", "sha224",
            hmac_test_case_keys[4], 131,
            hmac_test_case_data[5], 54,
            {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} },

        { "rfc4231 4.8", "sha224",
            hmac_test_case_keys[4], 131,
            hmac_test_case_data[7], 152,
            {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} },
#endif /* LTC_TEST_EXT */

        { "rfc4231 4.2", "sha256",
            hmac_test_case_keys[0], 20,
            hmac_test_case_data[0], 8,
            {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} },

#ifdef LTC_TEST_EXT
        { "rfc4231 4.3", "sha256",
            hmac_test_case_keys[1], 4,
            hmac_test_case_data[1], 28,
            {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} },

        { "rfc4231 4.4", "sha256",
            hmac_test_case_keys[4], 20,
            hmac_test_case_data[2], 50,
            {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} },

        { "rfc4231 4.5", "sha256",
            hmac_test_case_keys[2], 25,
            hmac_test_case_data[3], 50,
            {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} },

        { "rfc4231 4.7", "sha256",
            hmac_test_case_keys[4], 131,
            hmac_test_case_data[5], 54,
            {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} },

        { "rfc4231 4.8", "sha256",
            hmac_test_case_keys[4], 131,
            hmac_test_case_data[7], 152,
            {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} },
#endif /* LTC_TEST_EXT */

        { "rfc4231 4.2", "sha384",
            hmac_test_case_keys[0], 20,
            hmac_test_case_data[0], 8,
            {0xaf, 0xd0, 0x39, 0x44, 0xd8, 0x48, 0x95, 0x62,
             0x6b, 0x08, 0x25, 0xf4, 0xab, 0x46, 0x90, 0x7f,
             0x15, 0xf9, 0xda, 0xdb, 0xe4, 0x10, 0x1e, 0xc6,
             0x82, 0xaa, 0x03, 0x4c, 0x7c, 0xeb, 0xc5, 0x9c,
             0xfa, 0xea, 0x9e, 0xa9, 0x07, 0x6e, 0xde, 0x7f,
             0x4a, 0xf1, 0x52, 0xe8, 0xb2, 0xfa, 0x9c, 0xb6} },

#ifdef LTC_TEST_EXT
        { "rfc4231 4.3", "sha384",
            hmac_test_case_keys[1], 4,
            hmac_test_case_data[1], 28,
            {0xaf, 0x45, 0xd2, 0xe3, 0x76, 0x48, 0x40, 0x31,
             0x61, 0x7f, 0x78, 0xd2, 0xb5, 0x8a, 0x6b, 0x1b,
             0x9c, 0x7e, 0xf4, 0x64, 0xf5, 0xa0, 0x1b, 0x47,
             0xe4, 0x2e, 0xc3, 0x73, 0x63, 0x22, 0x44, 0x5e,
             0x8e, 0x22, 0x40, 0xca, 0x5e, 0x69, 0xe2, 0xc7,
             0x8b, 0x32, 0x39, 0xec, 0xfa, 0xb2, 0x16, 0x49} },

        { "rfc4231 4.4", "sha384",
            hmac_test_case_keys[4], 20,
            hmac_test_case_data[2], 50,
            {0x88, 0x06, 0x26, 0x08, 0xd3, 0xe6, 0xad, 0x8a,
             0x0a, 0xa2, 0xac, 0xe0, 0x14, 0xc8, 0xa8, 0x6f,
             0x0a, 0xa6, 0x35, 0xd9, 0x47, 0xac, 0x9f, 0xeb,
             0xe8, 0x3e, 0xf4, 0xe5, 0x59, 0x66, 0x14, 0x4b,
             0x2a, 0x5a, 0xb3, 0x9d, 0xc1, 0x38, 0x14, 0xb9,
             0x4e, 0x3a, 0xb6, 0xe1, 0x01, 0xa3, 0x4f, 0x27} },

        { "rfc4231 4.5", "sha384",
            hmac_test_case_keys[2], 25,
            hmac_test_case_data[3], 50,
            {0x3e, 0x8a, 0x69, 0xb7, 0x78, 0x3c, 0x25, 0x85,
             0x19, 0x33, 0xab, 0x62, 0x90, 0xaf, 0x6c, 0xa7,
             0x7a, 0x99, 0x81, 0x48, 0x08, 0x50, 0x00, 0x9c,
             0xc5, 0x57, 0x7c, 0x6e, 0x1f, 0x57, 0x3b, 0x4e,
             0x68, 0x01, 0xdd, 0x23, 0xc4, 0xa7, 0xd6, 0x79,
             0xcc, 0xf8, 0xa3, 0x86, 0xc6, 0x74, 0xcf, 0xfb} },

        { "rfc4231 4.7", "sha384",
            hmac_test_case_keys[4], 131,
            hmac_test_case_data[5], 54,
            {0x4e, 0xce, 0x08, 0x44, 0x85, 0x81, 0x3e, 0x90,
             0x88, 0xd2, 0xc6, 0x3a, 0x04, 0x1b, 0xc5, 0xb4,
             0x4f, 0x9e, 0xf1, 0x01, 0x2a, 0x2b, 0x58, 0x8f,
             0x3c, 0xd1, 0x1f, 0x05, 0x03, 0x3a, 0xc4, 0xc6,
             0x0c, 0x2e, 0xf6, 0xab, 0x40, 0x30, 0xfe, 0x82,
             0x96, 0x24, 0x8d, 0xf1, 0x63, 0xf4, 0x49, 0x52} },

        { "rfc4231 4.8", "sha384",
            hmac_test_case_keys[4], 131,
            hmac_test_case_data[7], 152,
            {0x66, 0x17, 0x17, 0x8e, 0x94, 0x1f, 0x02, 0x0d,
             0x35, 0x1e, 0x2f, 0x25, 0x4e, 0x8f, 0xd3, 0x2c,
             0x60, 0x24, 0x20, 0xfe, 0xb0, 0xb8, 0xfb, 0x9a,
             0xdc, 0xce, 0xbb, 0x82, 0x46, 0x1e, 0x99, 0xc5,
             0xa6, 0x78, 0xcc, 0x31, 0xe7, 0x99, 0x17, 0x6d,
             0x38, 0x60, 0xe6, 0x11, 0x0c, 0x46, 0x52, 0x3e} },
#endif /* LTC_TEST_EXT */

        { "rfc4231 4.2", "sha512",
            hmac_test_case_keys[0], 20,
            hmac_test_case_data[0], 8,
            {0x87, 0xaa, 0x7c, 0xde, 0xa5, 0xef, 0x61, 0x9d,
             0x4f, 0xf0, 0xb4, 0x24, 0x1a, 0x1d, 0x6c, 0xb0,
             0x23, 0x79, 0xf4, 0xe2, 0xce, 0x4e, 0xc2, 0x78,
             0x7a, 0xd0, 0xb3, 0x05, 0x45, 0xe1, 0x7c, 0xde,
             0xda, 0xa8, 0x33, 0xb7, 0xd6, 0xb8, 0xa7, 0x02,
             0x03, 0x8b, 0x27, 0x4e, 0xae, 0xa3, 0xf4, 0xe4,
             0xbe, 0x9d, 0x91, 0x4e, 0xeb, 0x61, 0xf1, 0x70,
             0x2e, 0x69, 0x6c, 0x20, 0x3a, 0x12, 0x68, 0x54} },

#ifdef LTC_TEST_EXT
        { "rfc4231 4.3", "sha512",
            hmac_test_case_keys[1], 4,
            hmac_test_case_data[1], 28,
            {0x16, 0x4b, 0x7a, 0x7b, 0xfc, 0xf8, 0x19, 0xe2,
             0xe3, 0x95, 0xfb, 0xe7, 0x3b, 0x56, 0xe0, 0xa3,
             0x87, 0xbd, 0x64, 0x22, 0x2e, 0x83, 0x1f, 0xd6,
             0x10, 0x27, 0x0c, 0xd7, 0xea, 0x25, 0x05, 0x54,
             0x97, 0x58, 0xbf, 0x75, 0xc0, 0x5a, 0x99, 0x4a,
             0x6d, 0x03, 0x4f, 0x65, 0xf8, 0xf0, 0xe6, 0xfd,
             0xca, 0xea, 0xb1, 0xa3, 0x4d, 0x4a, 0x6b, 0x4b,
             0x63, 0x6e, 0x07, 0x0a, 0x38, 0xbc, 0xe7, 0x37} },

        { "rfc4231 4.4", "sha512",
            hmac_test_case_keys[4], 20,
            hmac_test_case_data[2], 50,
            {0xfa, 0x73, 0xb0, 0x08, 0x9d, 0x56, 0xa2, 0x84,
             0xef, 0xb0, 0xf0, 0x75, 0x6c, 0x89, 0x0b, 0xe9,
             0xb1, 0xb5, 0xdb, 0xdd, 0x8e, 0xe8, 0x1a, 0x36,
             0x55, 0xf8, 0x3e, 0x33, 0xb2, 0x27, 0x9d, 0x39,
             0xbf, 0x3e, 0x84, 0x82, 0x79, 0xa7, 0x22, 0xc8,
             0x06, 0xb4, 0x85, 0xa4, 0x7e, 0x67, 0xc8, 0x07,
             0xb9, 0x46, 0xa3, 0x37, 0xbe, 0xe8, 0x94, 0x26,
             0x74, 0x27, 0x88, 0x59, 0xe1, 0x32, 0x92, 0xfb} },

        { "rfc4231 4.5", "sha512",
            hmac_test_case_keys[2], 25,
            hmac_test_case_data[3], 50,
            {0xb0, 0xba, 0x46, 0x56, 0x37, 0x45, 0x8c, 0x69,
             0x90, 0xe5, 0xa8, 0xc5, 0xf6, 0x1d, 0x4a, 0xf7,
             0xe5, 0x76, 0xd9, 0x7f, 0xf9, 0x4b, 0x87, 0x2d,
             0xe7, 0x6f, 0x80, 0x50, 0x36, 0x1e, 0xe3, 0xdb,
             0xa9, 0x1c, 0xa5, 0xc1, 0x1a, 0xa2, 0x5e, 0xb4,
             0xd6, 0x79, 0x27, 0x5c, 0xc5, 0x78, 0x80, 0x63,
             0xa5, 0xf1, 0x97, 0x41, 0x12, 0x0c, 0x4f, 0x2d,
             0xe2, 0xad, 0xeb, 0xeb, 0x10, 0xa2, 0x98, 0xdd} },

        { "rfc4231 4.7", "sha512",
            hmac_test_case_keys[4], 131,
            hmac_test_case_data[5], 54,
            {0x80, 0xb2, 0x42, 0x63, 0xc7, 0xc1, 0xa3, 0xeb,
             0xb7, 0x14, 0x93, 0xc1, 0xdd, 0x7b, 0xe8, 0xb4,
             0x9b, 0x46, 0xd1, 0xf4, 0x1b, 0x4a, 0xee, 0xc1,
             0x12, 0x1b, 0x01, 0x37, 0x83, 0xf8, 0xf3, 0x52,
             0x6b, 0x56, 0xd0, 0x37, 0xe0, 0x5f, 0x25, 0x98,
             0xbd, 0x0f, 0xd2, 0x21, 0x5d, 0x6a, 0x1e, 0x52,
             0x95, 0xe6, 0x4f, 0x73, 0xf6, 0x3f, 0x0a, 0xec,
             0x8b, 0x91, 0x5a, 0x98, 0x5d, 0x78, 0x65, 0x98} },

        { "rfc4231 4.8", "sha512",
            hmac_test_case_keys[4], 131,
            hmac_test_case_data[7], 152,
            {0xe3, 0x7b, 0x6a, 0x77, 0x5d, 0xc8, 0x7d, 0xba,
             0xa4, 0xdf, 0xa9, 0xf9, 0x6e, 0x5e, 0x3f, 0xfd,
             0xde, 0xbd, 0x71, 0xf8, 0x86, 0x72, 0x89, 0x86,
             0x5d, 0xf5, 0xa3, 0x2d, 0x20, 0xcd, 0xc9, 0x44,
             0xb6, 0x02, 0x2c, 0xac, 0x3c, 0x49, 0x82, 0xb1,
             0x0d, 0x5e, 0xeb, 0x55, 0xc3, 0xe4, 0xde, 0x15,
             0x13, 0x46, 0x76, 0xfb, 0x6d, 0xe0, 0x44, 0x60,
             0x65, 0xc9, 0x74, 0x40, 0xfa, 0x8c, 0x6a, 0x58} },
#endif /* LTC_TEST_EXT */

    };

    unsigned long outlen;
    int err;
    int tested=0,failed=0;
    for(i=0; i < (int)(sizeof(cases) / sizeof(cases[0])); i++) {
        int hash = find_hash(cases[i].algo);
        if (hash == -1) continue;
        ++tested;
        outlen = sizeof(digest);
        if((err = hmac_memory(hash, cases[i].key, cases[i].keylen, cases[i].data, cases[i].datalen, digest, &outlen)) != CRYPT_OK) {
#ifdef LTC_TEST_DBG
            printf("HMAC-%s test %s, %s\n", cases[i].algo, cases[i].num, error_to_string(err));
#endif
            return err;
        }

        if(compare_testvector(digest, outlen, cases[i].digest, (size_t)hash_descriptor[hash].hashsize, cases[i].num, i)) {
            failed++;
        }
    }

    if (failed != 0) {
        return CRYPT_FAIL_TESTVECTOR;
    } else if (tested == 0) {
        return CRYPT_NOP;
    } else {
        return CRYPT_OK;
    }
 #endif
}

#endif


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