test/dsatest.c

   1 /*
   2  * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15
  16 #include <openssl/crypto.h>
  17 #include <openssl/rand.h>
  18 #include <openssl/bn.h>
  19 #include <openssl/dsa.h>
  20
  21 #include "testutil.h"
  22 #include "internal/nelem.h"
  23
  24 #ifndef OPENSSL_NO_DSA
  25 static int dsa_cb(int p, int n, BN_GENCB *arg);
  26
  27 /*
  28  * seed, out_p, out_q, out_g are taken from the updated Appendix 5 to FIPS
  29  * PUB 186 and also appear in Appendix 5 to FIPS PIB 186-1
  30  */
  31 static unsigned char seed[20] = {
  32     0xd5, 0x01, 0x4e, 0x4b, 0x60, 0xef, 0x2b, 0xa8, 0xb6, 0x21, 0x1b, 0x40,
  33     0x62, 0xba, 0x32, 0x24, 0xe0, 0x42, 0x7d, 0xd3,
  34 };
  35
  36 static unsigned char out_p[] = {
  37     0x8d, 0xf2, 0xa4, 0x94, 0x49, 0x22, 0x76, 0xaa,
  38     0x3d, 0x25, 0x75, 0x9b, 0xb0, 0x68, 0x69, 0xcb,
  39     0xea, 0xc0, 0xd8, 0x3a, 0xfb, 0x8d, 0x0c, 0xf7,
  40     0xcb, 0xb8, 0x32, 0x4f, 0x0d, 0x78, 0x82, 0xe5,
  41     0xd0, 0x76, 0x2f, 0xc5, 0xb7, 0x21, 0x0e, 0xaf,
  42     0xc2, 0xe9, 0xad, 0xac, 0x32, 0xab, 0x7a, 0xac,
  43     0x49, 0x69, 0x3d, 0xfb, 0xf8, 0x37, 0x24, 0xc2,
  44     0xec, 0x07, 0x36, 0xee, 0x31, 0xc8, 0x02, 0x91,
  45 };
  46
  47 static unsigned char out_q[] = {
  48     0xc7, 0x73, 0x21, 0x8c, 0x73, 0x7e, 0xc8, 0xee,
  49     0x99, 0x3b, 0x4f, 0x2d, 0xed, 0x30, 0xf4, 0x8e,
  50     0xda, 0xce, 0x91, 0x5f,
  51 };
  52
  53 static unsigned char out_g[] = {
  54     0x62, 0x6d, 0x02, 0x78, 0x39, 0xea, 0x0a, 0x13,
  55     0x41, 0x31, 0x63, 0xa5, 0x5b, 0x4c, 0xb5, 0x00,
  56     0x29, 0x9d, 0x55, 0x22, 0x95, 0x6c, 0xef, 0xcb,
  57     0x3b, 0xff, 0x10, 0xf3, 0x99, 0xce, 0x2c, 0x2e,
  58     0x71, 0xcb, 0x9d, 0xe5, 0xfa, 0x24, 0xba, 0xbf,
  59     0x58, 0xe5, 0xb7, 0x95, 0x21, 0x92, 0x5c, 0x9c,
  60     0xc4, 0x2e, 0x9f, 0x6f, 0x46, 0x4b, 0x08, 0x8c,
  61     0xc5, 0x72, 0xaf, 0x53, 0xe6, 0xd7, 0x88, 0x02,
  62 };
  63
  64 static const unsigned char str1[] = "12345678901234567890";
  65
  66 static int dsa_test(void)
  67 {
  68     BN_GENCB *cb;
  69     DSA *dsa = NULL;
  70     int counter, ret = 0, i, j;
  71     unsigned char buf[256];
  72     unsigned long h;
  73     unsigned char sig[256];
  74     unsigned int siglen;
  75     const BIGNUM *p = NULL, *q = NULL, *g = NULL;
  76
  77     if (!TEST_ptr(cb = BN_GENCB_new()))
  78         goto end;
  79
  80     BN_GENCB_set(cb, dsa_cb, NULL);
  81     if (!TEST_ptr(dsa = DSA_new())
  82         || !TEST_true(DSA_generate_parameters_ex(dsa, 512, seed, 20,
  83                                                 &counter, &h, cb)))
  84         goto end;
  85
  86     if (!TEST_int_eq(counter, 105))
  87         goto end;
  88     if (!TEST_int_eq(h, 2))
  89         goto end;
  90
  91     DSA_get0_pqg(dsa, &p, &q, &g);
  92     i = BN_bn2bin(q, buf);
  93     j = sizeof(out_q);
  94     if (!TEST_int_eq(i, j) || !TEST_mem_eq(buf, i, out_q, i))
  95         goto end;
  96
  97     i = BN_bn2bin(p, buf);
  98     j = sizeof(out_p);
  99     if (!TEST_int_eq(i, j) || !TEST_mem_eq(buf, i, out_p, i))
 100         goto end;
 101
 102     i = BN_bn2bin(g, buf);
 103     j = sizeof(out_g);
 104     if (!TEST_int_eq(i, j) || !TEST_mem_eq(buf, i, out_g, i))
 105         goto end;
 106
 107     DSA_generate_key(dsa);
 108     DSA_sign(0, str1, 20, sig, &siglen, dsa);
 109     if (TEST_true(DSA_verify(0, str1, 20, sig, siglen, dsa)))
 110         ret = 1;
 111
 112  end:
 113     DSA_free(dsa);
 114     BN_GENCB_free(cb);
 115     return ret;
 116 }
 117
 118 static int dsa_cb(int p, int n, BN_GENCB *arg)
 119 {
 120     static int ok = 0, num = 0;
 121
 122     if (p == 0)
 123         num++;
 124     if (p == 2)
 125         ok++;
 126
 127     if (!ok && (p == 0) && (num > 1)) {
 128         TEST_error("dsa_cb error");
 129         return 0;
 130     }
 131     return 1;
 132 }
 133 #endif /* OPENSSL_NO_DSA */
 134
 135 int setup_tests(void)
 136 {
 137 #ifndef OPENSSL_NO_DSA
 138     ADD_TEST(dsa_test);
 139 #endif
 140     return 1;
 141 }