test/rsa_sp800_56b_test.c

   1 /*
   2  * Copyright 2018-2020 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 /*
  11  * RSA low level APIs are deprecated for public use, but still ok for
  12  * internal use.
  13  */
  14 #include "internal/deprecated.h"
  15
  16 #include <stdio.h>
  17 #include <string.h>
  18
  19 #include "internal/nelem.h"
  20
  21 #include <openssl/crypto.h>
  22 #include <openssl/err.h>
  23 #include <openssl/rand.h>
  24 #include <openssl/bn.h>
  25
  26 #include "testutil.h"
  27
  28 #ifdef OPENSSL_NO_RSA
  29 int setup_tests(void)
  30 {
  31     /* No tests */
  32     return 1;
  33 }
  34 #else
  35 # include "rsa_local.h"
  36 # include <openssl/rsa.h>
  37
  38 /* taken from RSA2 cavs data */
  39 static const unsigned char cav_e[] = {
  40     0x01,0x00,0x01
  41 };
  42 static const unsigned char cav_p[] = {
  43     0xcf,0x72,0x1b,0x9a,0xfd,0x0d,0x22,0x1a,0x74,0x50,0x97,0x22,0x76,0xd8,0xc0,
  44     0xc2,0xfd,0x08,0x81,0x05,0xdd,0x18,0x21,0x99,0x96,0xd6,0x5c,0x79,0xe3,0x02,
  45     0x81,0xd7,0x0e,0x3f,0x3b,0x34,0xda,0x61,0xc9,0x2d,0x84,0x86,0x62,0x1e,0x3d,
  46     0x5d,0xbf,0x92,0x2e,0xcd,0x35,0x3d,0x6e,0xb9,0x59,0x16,0xc9,0x82,0x50,0x41,
  47     0x30,0x45,0x67,0xaa,0xb7,0xbe,0xec,0xea,0x4b,0x9e,0xa0,0xc3,0x05,0xbc,0x4c,
  48     0x01,0xa5,0x4b,0xbd,0xa4,0x20,0xb5,0x20,0xd5,0x59,0x6f,0x82,0x5c,0x8f,0x4f,
  49     0xe0,0x3a,0x4e,0x7e,0xfe,0x44,0xf3,0x3c,0xc0,0x0e,0x14,0x2b,0x32,0xe6,0x28,
  50     0x8b,0x63,0x87,0x00,0xc3,0x53,0x4a,0x5b,0x71,0x7a,0x5b,0x28,0x40,0xc4,0x18,
  51     0xb6,0x77,0x0b,0xab,0x59,0xa4,0x96,0x7d
  52 };
  53 static const unsigned char cav_q[] = {
  54     0xfe,0xab,0xf2,0x7c,0x16,0x4a,0xf0,0x8d,0x31,0xc6,0x0a,0x82,0xe2,0xae,0xbb,
  55     0x03,0x7e,0x7b,0x20,0x4e,0x64,0xb0,0x16,0xad,0x3c,0x01,0x1a,0xd3,0x54,0xbf,
  56     0x2b,0xa4,0x02,0x9e,0xc3,0x0d,0x60,0x3d,0x1f,0xb9,0xc0,0x0d,0xe6,0x97,0x68,
  57     0xbb,0x8c,0x81,0xd5,0xc1,0x54,0x96,0x0f,0x99,0xf0,0xa8,0xa2,0xf3,0xc6,0x8e,
  58     0xec,0xbc,0x31,0x17,0x70,0x98,0x24,0xa3,0x36,0x51,0xa8,0x54,0xc4,0x44,0xdd,
  59     0xf7,0x7e,0xda,0x47,0x4a,0x67,0x44,0x5d,0x4e,0x75,0xf0,0x4d,0x00,0x68,0xe1,
  60     0x4a,0xec,0x1f,0x45,0xf9,0xe6,0xca,0x38,0x95,0x48,0x6f,0xdc,0x9d,0x1b,0xa3,
  61     0x4b,0xfd,0x08,0x4b,0x54,0xcd,0xeb,0x3d,0xef,0x33,0x11,0x6e,0xce,0xe4,0x5d,
  62     0xef,0xa9,0x58,0x5c,0x87,0x4d,0xc8,0xcf
  63 };
  64 static const unsigned char cav_n[] = {
  65     0xce,0x5e,0x8d,0x1a,0xa3,0x08,0x7a,0x2d,0xb4,0x49,0x48,0xf0,0x06,0xb6,0xfe,
  66     0xba,0x2f,0x39,0x7c,0x7b,0xe0,0x5d,0x09,0x2d,0x57,0x4e,0x54,0x60,0x9c,0xe5,
  67     0x08,0x4b,0xe1,0x1a,0x73,0xc1,0x5e,0x2f,0xb6,0x46,0xd7,0x81,0xca,0xbc,0x98,
  68     0xd2,0xf9,0xef,0x1c,0x92,0x8c,0x8d,0x99,0x85,0x28,0x52,0xd6,0xd5,0xab,0x70,
  69     0x7e,0x9e,0xa9,0x87,0x82,0xc8,0x95,0x64,0xeb,0xf0,0x6c,0x0f,0x3f,0xe9,0x02,
  70     0x29,0x2e,0x6d,0xa1,0xec,0xbf,0xdc,0x23,0xdf,0x82,0x4f,0xab,0x39,0x8d,0xcc,
  71     0xac,0x21,0x51,0x14,0xf8,0xef,0xec,0x73,0x80,0x86,0xa3,0xcf,0x8f,0xd5,0xcf,
  72     0x22,0x1f,0xcc,0x23,0x2f,0xba,0xcb,0xf6,0x17,0xcd,0x3a,0x1f,0xd9,0x84,0xb9,
  73     0x88,0xa7,0x78,0x0f,0xaa,0xc9,0x04,0x01,0x20,0x72,0x5d,0x2a,0xfe,0x5b,0xdd,
  74     0x16,0x5a,0xed,0x83,0x02,0x96,0x39,0x46,0x37,0x30,0xc1,0x0d,0x87,0xc2,0xc8,
  75     0x33,0x38,0xed,0x35,0x72,0xe5,0x29,0xf8,0x1f,0x23,0x60,0xe1,0x2a,0x5b,0x1d,
  76     0x6b,0x53,0x3f,0x07,0xc4,0xd9,0xbb,0x04,0x0c,0x5c,0x3f,0x0b,0xc4,0xd4,0x61,
  77     0x96,0x94,0xf1,0x0f,0x4a,0x49,0xac,0xde,0xd2,0xe8,0x42,0xb3,0x4a,0x0b,0x64,
  78     0x7a,0x32,0x5f,0x2b,0x5b,0x0f,0x8b,0x8b,0xe0,0x33,0x23,0x34,0x64,0xf8,0xb5,
  79     0x7f,0x69,0x60,0xb8,0x71,0xe9,0xff,0x92,0x42,0xb1,0xf7,0x23,0xa8,0xa7,0x92,
  80     0x04,0x3d,0x6b,0xff,0xf7,0xab,0xbb,0x14,0x1f,0x4c,0x10,0x97,0xd5,0x6b,0x71,
  81     0x12,0xfd,0x93,0xa0,0x4a,0x3b,0x75,0x72,0x40,0x96,0x1c,0x5f,0x40,0x40,0x57,
  82     0x13
  83 };
  84 static const unsigned char cav_d[] = {
  85     0x47,0x47,0x49,0x1d,0x66,0x2a,0x4b,0x68,0xf5,0xd8,0x4a,0x24,0xfd,0x6c,0xbf,
  86     0x56,0xb7,0x70,0xf7,0x9a,0x21,0xc8,0x80,0x9e,0xf4,0x84,0xcd,0x88,0x01,0x28,
  87     0xea,0x50,0xab,0x13,0x63,0xdf,0xea,0x14,0x38,0xb5,0x07,0x42,0x81,0x2f,0xda,
  88     0xe9,0x24,0x02,0x7e,0xaf,0xef,0x74,0x09,0x0e,0x80,0xfa,0xfb,0xd1,0x19,0x41,
  89     0xe5,0xba,0x0f,0x7c,0x0a,0xa4,0x15,0x55,0xa2,0x58,0x8c,0x3a,0x48,0x2c,0xc6,
  90     0xde,0x4a,0x76,0xfb,0x72,0xb6,0x61,0xe6,0xd2,0x10,0x44,0x4c,0x33,0xb8,0xd2,
  91     0x74,0xb1,0x9d,0x3b,0xcd,0x2f,0xb1,0x4f,0xc3,0x98,0xbd,0x83,0xb7,0x7e,0x75,
  92     0xe8,0xa7,0x6a,0xee,0xcc,0x51,0x8c,0x99,0x17,0x67,0x7f,0x27,0xf9,0x0d,0x6a,
  93     0xb7,0xd4,0x80,0x17,0x89,0x39,0x9c,0xf3,0xd7,0x0f,0xdf,0xb0,0x55,0x80,0x1d,
  94     0xaf,0x57,0x2e,0xd0,0xf0,0x4f,0x42,0x69,0x55,0xbc,0x83,0xd6,0x97,0x83,0x7a,
  95     0xe6,0xc6,0x30,0x6d,0x3d,0xb5,0x21,0xa7,0xc4,0x62,0x0a,0x20,0xce,0x5e,0x5a,
  96     0x17,0x98,0xb3,0x6f,0x6b,0x9a,0xeb,0x6b,0xa3,0xc4,0x75,0xd8,0x2b,0xdc,0x5c,
  97     0x6f,0xec,0x5d,0x49,0xac,0xa8,0xa4,0x2f,0xb8,0x8c,0x4f,0x2e,0x46,0x21,0xee,
  98     0x72,0x6a,0x0e,0x22,0x80,0x71,0xc8,0x76,0x40,0x44,0x61,0x16,0xbf,0xa5,0xf8,
  99     0x89,0xc7,0xe9,0x87,0xdf,0xbd,0x2e,0x4b,0x4e,0xc2,0x97,0x53,0xe9,0x49,0x1c,
 100     0x05,0xb0,0x0b,0x9b,0x9f,0x21,0x19,0x41,0xe9,0xf5,0x61,0xd7,0x33,0x2e,0x2c,
 101     0x94,0xb8,0xa8,0x9a,0x3a,0xcc,0x6a,0x24,0x8d,0x19,0x13,0xee,0xb9,0xb0,0x48,
 102     0x61
 103 };
 104
 105 /* helper function */
 106 static BIGNUM *bn_load_new(const unsigned char *data, int sz)
 107 {
 108     BIGNUM *ret = BN_new();
 109     if (ret != NULL)
 110         BN_bin2bn(data, sz, ret);
 111     return ret;
 112 }
 113
 114 static int test_check_public_exponent(void)
 115 {
 116     int ret = 0;
 117     BIGNUM *e = NULL;
 118
 119     ret = TEST_ptr(e = BN_new())
 120           /* e is too small */
 121           && TEST_true(BN_set_word(e, 65535))
 122           && TEST_false(ossl_rsa_check_public_exponent(e))
 123           /* e is even will fail */
 124           && TEST_true(BN_set_word(e, 65536))
 125           && TEST_false(ossl_rsa_check_public_exponent(e))
 126           /* e is ok */
 127           && TEST_true(BN_set_word(e, 65537))
 128           && TEST_true(ossl_rsa_check_public_exponent(e))
 129           /* e = 2^256 is too big */
 130           && TEST_true(BN_lshift(e, BN_value_one(), 256))
 131           && TEST_false(ossl_rsa_check_public_exponent(e))
 132           /* e = 2^256-1 is odd and in range */
 133           && TEST_true(BN_sub(e, e, BN_value_one()))
 134           && TEST_true(ossl_rsa_check_public_exponent(e));
 135     BN_free(e);
 136     return ret;
 137 }
 138
 139 static int test_check_prime_factor_range(void)
 140 {
 141     int ret = 0;
 142     BN_CTX *ctx = NULL;
 143     BIGNUM *p = NULL;
 144     BIGNUM *bn_p1 = NULL, *bn_p2 = NULL, *bn_p3 = NULL, *bn_p4 = NULL;
 145     /* Some range checks that are larger than 32 bits */
 146     static const unsigned char p1[] = { 0x0B, 0x50, 0x4F, 0x33, 0x3F };
 147     static const unsigned char p2[] = { 0x10, 0x00, 0x00, 0x00, 0x00 };
 148     static const unsigned char p3[] = { 0x0B, 0x50, 0x4F, 0x33, 0x40 };
 149     static const unsigned char p4[] = { 0x0F, 0xFF, 0xFF, 0xFF, 0xFF };
 150
 151     /* (√2)(2^(nbits/2 - 1) <= p <= 2^(nbits/2) - 1
 152      * For 8 bits:   0xB.504F <= p <= 0xF
 153      * for 72 bits:  0xB504F333F. <= p <= 0xF_FFFF_FFFF
 154      */
 155     ret = TEST_ptr(p = BN_new())
 156           && TEST_ptr(bn_p1 = bn_load_new(p1, sizeof(p1)))
 157           && TEST_ptr(bn_p2 = bn_load_new(p2, sizeof(p2)))
 158           && TEST_ptr(bn_p3 = bn_load_new(p3, sizeof(p3)))
 159           && TEST_ptr(bn_p4 = bn_load_new(p4, sizeof(p4)))
 160           && TEST_ptr(ctx = BN_CTX_new())
 161           && TEST_true(BN_set_word(p, 0xA))
 162           && TEST_false(ossl_rsa_check_prime_factor_range(p, 8, ctx))
 163           && TEST_true(BN_set_word(p, 0x10))
 164           && TEST_false(ossl_rsa_check_prime_factor_range(p, 8, ctx))
 165           && TEST_true(BN_set_word(p, 0xB))
 166           && TEST_false(ossl_rsa_check_prime_factor_range(p, 8, ctx))
 167           && TEST_true(BN_set_word(p, 0xC))
 168           && TEST_true(ossl_rsa_check_prime_factor_range(p, 8, ctx))
 169           && TEST_true(BN_set_word(p, 0xF))
 170           && TEST_true(ossl_rsa_check_prime_factor_range(p, 8, ctx))
 171           && TEST_false(ossl_rsa_check_prime_factor_range(bn_p1, 72, ctx))
 172           && TEST_false(ossl_rsa_check_prime_factor_range(bn_p2, 72, ctx))
 173           && TEST_true(ossl_rsa_check_prime_factor_range(bn_p3, 72, ctx))
 174           && TEST_true(ossl_rsa_check_prime_factor_range(bn_p4, 72, ctx));
 175
 176     BN_free(bn_p4);
 177     BN_free(bn_p3);
 178     BN_free(bn_p2);
 179     BN_free(bn_p1);
 180     BN_free(p);
 181     BN_CTX_free(ctx);
 182     return ret;
 183 }
 184
 185 static int test_check_prime_factor(void)
 186 {
 187     int ret = 0;
 188     BN_CTX *ctx = NULL;
 189     BIGNUM *p = NULL, *e = NULL;
 190     BIGNUM *bn_p1 = NULL, *bn_p2 = NULL, *bn_p3 = NULL;
 191
 192     /* Some range checks that are larger than 32 bits */
 193     static const unsigned char p1[] = { 0x0B, 0x50, 0x4f, 0x33, 0x73 };
 194     static const unsigned char p2[] = { 0x0B, 0x50, 0x4f, 0x33, 0x75 };
 195     static const unsigned char p3[] = { 0x0F, 0x50, 0x00, 0x03, 0x75 };
 196
 197     ret = TEST_ptr(p = BN_new())
 198           && TEST_ptr(bn_p1 = bn_load_new(p1, sizeof(p1)))
 199           && TEST_ptr(bn_p2 = bn_load_new(p2, sizeof(p2)))
 200           && TEST_ptr(bn_p3 = bn_load_new(p3, sizeof(p3)))
 201           && TEST_ptr(e = BN_new())
 202           && TEST_ptr(ctx = BN_CTX_new())
 203           /* Fails the prime test */
 204           && TEST_true(BN_set_word(e, 0x1))
 205           && TEST_false(ossl_rsa_check_prime_factor(bn_p1, e, 72, ctx))
 206           /* p is prime and in range and gcd(p-1, e) = 1 */
 207           && TEST_true(ossl_rsa_check_prime_factor(bn_p2, e, 72, ctx))
 208           /* gcd(p-1,e) = 1 test fails */
 209           && TEST_true(BN_set_word(e, 0x2))
 210           && TEST_false(ossl_rsa_check_prime_factor(p, e, 72, ctx))
 211           /* p fails the range check */
 212           && TEST_true(BN_set_word(e, 0x1))
 213           && TEST_false(ossl_rsa_check_prime_factor(bn_p3, e, 72, ctx));
 214
 215     BN_free(bn_p3);
 216     BN_free(bn_p2);
 217     BN_free(bn_p1);
 218     BN_free(e);
 219     BN_free(p);
 220     BN_CTX_free(ctx);
 221     return ret;
 222 }
 223
 224 /* This test uses legacy functions because they can take invalid numbers */
 225 static int test_check_private_exponent(void)
 226 {
 227     int ret = 0;
 228     RSA *key = NULL;
 229     BN_CTX *ctx = NULL;
 230     BIGNUM *p = NULL, *q = NULL, *e = NULL, *d = NULL, *n = NULL;
 231
 232     ret = TEST_ptr(key = RSA_new())
 233           && TEST_ptr(ctx = BN_CTX_new())
 234           && TEST_ptr(p = BN_new())
 235           && TEST_ptr(q = BN_new())
 236           /* lcm(15-1,17-1) = 14*16 / 2 = 112 */
 237           && TEST_true(BN_set_word(p, 15))
 238           && TEST_true(BN_set_word(q, 17))
 239           && TEST_true(RSA_set0_factors(key, p, q));
 240     if (!ret) {
 241         BN_free(p);
 242         BN_free(q);
 243         goto end;
 244     }
 245
 246     ret = TEST_ptr(e = BN_new())
 247           && TEST_ptr(d = BN_new())
 248           && TEST_ptr(n = BN_new())
 249           && TEST_true(BN_set_word(e, 5))
 250           && TEST_true(BN_set_word(d, 157))
 251           && TEST_true(BN_set_word(n, 15*17))
 252           && TEST_true(RSA_set0_key(key, n, e, d));
 253     if (!ret) {
 254         BN_free(e);
 255         BN_free(d);
 256         BN_free(n);
 257         goto end;
 258     }
 259     /* fails since d >= lcm(p-1, q-1) */
 260     ret = TEST_false(ossl_rsa_check_private_exponent(key, 8, ctx))
 261           && TEST_true(BN_set_word(d, 45))
 262           /* d is correct size and 1 = e.d mod lcm(p-1, q-1) */
 263           && TEST_true(ossl_rsa_check_private_exponent(key, 8, ctx))
 264           /* d is too small compared to nbits */
 265           && TEST_false(ossl_rsa_check_private_exponent(key, 16, ctx))
 266           /* d is too small compared to nbits */
 267           && TEST_true(BN_set_word(d, 16))
 268           && TEST_false(ossl_rsa_check_private_exponent(key, 8, ctx))
 269           /* fail if 1 != e.d mod lcm(p-1, q-1) */
 270           && TEST_true(BN_set_word(d, 46))
 271           && TEST_false(ossl_rsa_check_private_exponent(key, 8, ctx));
 272 end:
 273     RSA_free(key);
 274     BN_CTX_free(ctx);
 275     return ret;
 276 }
 277
 278 static int test_check_crt_components(void)
 279 {
 280     const int P = 15;
 281     const int Q = 17;
 282     const int E = 5;
 283     const int N = P*Q;
 284     const int DP = 3;
 285     const int DQ = 13;
 286     const int QINV = 8;
 287
 288     int ret = 0;
 289     RSA *key = NULL;
 290     BN_CTX *ctx = NULL;
 291     BIGNUM *p = NULL, *q = NULL, *e = NULL;
 292
 293     ret = TEST_ptr(key = RSA_new())
 294           && TEST_ptr(ctx = BN_CTX_new())
 295           && TEST_ptr(p = BN_new())
 296           && TEST_ptr(q = BN_new())
 297           && TEST_ptr(e = BN_new())
 298           && TEST_true(BN_set_word(p, P))
 299           && TEST_true(BN_set_word(q, Q))
 300           && TEST_true(BN_set_word(e, E))
 301           && TEST_true(RSA_set0_factors(key, p, q));
 302     if (!ret) {
 303         BN_free(p);
 304         BN_free(q);
 305         goto end;
 306     }
 307     ret = TEST_true(ossl_rsa_sp800_56b_derive_params_from_pq(key, 8, e, ctx))
 308           && TEST_BN_eq_word(key->n, N)
 309           && TEST_BN_eq_word(key->dmp1, DP)
 310           && TEST_BN_eq_word(key->dmq1, DQ)
 311           && TEST_BN_eq_word(key->iqmp, QINV)
 312           && TEST_true(ossl_rsa_check_crt_components(key, ctx))
 313           /* (a) 1 < dP < (p – 1). */
 314           && TEST_true(BN_set_word(key->dmp1, 1))
 315           && TEST_false(ossl_rsa_check_crt_components(key, ctx))
 316           && TEST_true(BN_set_word(key->dmp1, P-1))
 317           && TEST_false(ossl_rsa_check_crt_components(key, ctx))
 318           && TEST_true(BN_set_word(key->dmp1, DP))
 319           /* (b) 1 < dQ < (q - 1). */
 320           && TEST_true(BN_set_word(key->dmq1, 1))
 321           && TEST_false(ossl_rsa_check_crt_components(key, ctx))
 322           && TEST_true(BN_set_word(key->dmq1, Q-1))
 323           && TEST_false(ossl_rsa_check_crt_components(key, ctx))
 324           && TEST_true(BN_set_word(key->dmq1, DQ))
 325           /* (c) 1 < qInv < p */
 326           && TEST_true(BN_set_word(key->iqmp, 1))
 327           && TEST_false(ossl_rsa_check_crt_components(key, ctx))
 328           && TEST_true(BN_set_word(key->iqmp, P))
 329           && TEST_false(ossl_rsa_check_crt_components(key, ctx))
 330           && TEST_true(BN_set_word(key->iqmp, QINV))
 331           /* (d) 1 = (dP . e) mod (p - 1)*/
 332           && TEST_true(BN_set_word(key->dmp1, DP+1))
 333           && TEST_false(ossl_rsa_check_crt_components(key, ctx))
 334           && TEST_true(BN_set_word(key->dmp1, DP))
 335           /* (e) 1 = (dQ . e) mod (q - 1) */
 336           && TEST_true(BN_set_word(key->dmq1, DQ-1))
 337           && TEST_false(ossl_rsa_check_crt_components(key, ctx))
 338           && TEST_true(BN_set_word(key->dmq1, DQ))
 339           /* (f) 1 = (qInv . q) mod p */
 340           && TEST_true(BN_set_word(key->iqmp, QINV+1))
 341           && TEST_false(ossl_rsa_check_crt_components(key, ctx))
 342           && TEST_true(BN_set_word(key->iqmp, QINV))
 343           /* check defaults are still valid */
 344           && TEST_true(ossl_rsa_check_crt_components(key, ctx));
 345 end:
 346     BN_free(e);
 347     RSA_free(key);
 348     BN_CTX_free(ctx);
 349     return ret;
 350 }
 351
 352 static int test_pq_diff(void)
 353 {
 354     int ret = 0;
 355     BIGNUM *tmp = NULL, *p = NULL, *q = NULL;
 356
 357     ret = TEST_ptr(tmp = BN_new())
 358           && TEST_ptr(p = BN_new())
 359           && TEST_ptr(q = BN_new())
 360           /* |1-(2+1)| > 2^1 */
 361           && TEST_true(BN_set_word(p, 1))
 362           && TEST_true(BN_set_word(q, 1+2))
 363           && TEST_false(ossl_rsa_check_pminusq_diff(tmp, p, q, 202))
 364           /* Check |p - q| > 2^(nbits/2 - 100) */
 365           && TEST_true(BN_set_word(q, 1+3))
 366           && TEST_true(ossl_rsa_check_pminusq_diff(tmp, p, q, 202))
 367           && TEST_true(BN_set_word(p, 1+3))
 368           && TEST_true(BN_set_word(q, 1))
 369           && TEST_true(ossl_rsa_check_pminusq_diff(tmp, p, q, 202));
 370     BN_free(p);
 371     BN_free(q);
 372     BN_free(tmp);
 373     return ret;
 374 }
 375
 376 static int test_invalid_keypair(void)
 377 {
 378     int ret = 0;
 379     RSA *key = NULL;
 380     BN_CTX *ctx = NULL;
 381     BIGNUM *p = NULL, *q = NULL, *n = NULL, *e = NULL, *d = NULL;
 382
 383     ret = TEST_ptr(key = RSA_new())
 384           && TEST_ptr(ctx = BN_CTX_new())
 385           /* NULL parameters */
 386           && TEST_false(ossl_rsa_sp800_56b_check_keypair(key, NULL, -1, 2048))
 387           /* load key */
 388           && TEST_ptr(p = bn_load_new(cav_p, sizeof(cav_p)))
 389           && TEST_ptr(q = bn_load_new(cav_q, sizeof(cav_q)))
 390           && TEST_true(RSA_set0_factors(key, p, q));
 391     if (!ret) {
 392         BN_free(p);
 393         BN_free(q);
 394         goto end;
 395     }
 396
 397     ret = TEST_ptr(e = bn_load_new(cav_e, sizeof(cav_e)))
 398           && TEST_ptr(n = bn_load_new(cav_n, sizeof(cav_n)))
 399           && TEST_ptr(d = bn_load_new(cav_d, sizeof(cav_d)))
 400           && TEST_true(RSA_set0_key(key, n, e, d));
 401     if (!ret) {
 402         BN_free(e);
 403         BN_free(n);
 404         BN_free(d);
 405         goto end;
 406     }
 407           /* bad strength/key size */
 408     ret = TEST_false(ossl_rsa_sp800_56b_check_keypair(key, NULL, 100, 2048))
 409           && TEST_false(ossl_rsa_sp800_56b_check_keypair(key, NULL, 112, 1024))
 410           && TEST_false(ossl_rsa_sp800_56b_check_keypair(key, NULL, 128, 2048))
 411           && TEST_false(ossl_rsa_sp800_56b_check_keypair(key, NULL, 140, 3072))
 412           /* mismatching exponent */
 413           && TEST_false(ossl_rsa_sp800_56b_check_keypair(key, BN_value_one(),
 414                                                          -1, 2048))
 415           /* bad exponent */
 416           && TEST_true(BN_add_word(e, 1))
 417           && TEST_false(ossl_rsa_sp800_56b_check_keypair(key, NULL, -1, 2048))
 418           && TEST_true(BN_sub_word(e, 1))
 419
 420           /* mismatch between bits and modulus */
 421           && TEST_false(ossl_rsa_sp800_56b_check_keypair(key, NULL, -1, 3072))
 422           && TEST_true(ossl_rsa_sp800_56b_check_keypair(key, e, 112, 2048))
 423           /* check n == pq failure */
 424           && TEST_true(BN_add_word(n, 1))
 425           && TEST_false(ossl_rsa_sp800_56b_check_keypair(key, NULL, -1, 2048))
 426           && TEST_true(BN_sub_word(n, 1))
 427           /* check p  */
 428           && TEST_true(BN_sub_word(p, 2))
 429           && TEST_true(BN_mul(n, p, q, ctx))
 430           && TEST_false(ossl_rsa_sp800_56b_check_keypair(key, NULL, -1, 2048))
 431           && TEST_true(BN_add_word(p, 2))
 432           && TEST_true(BN_mul(n, p, q, ctx))
 433           /* check q  */
 434           && TEST_true(BN_sub_word(q, 2))
 435           && TEST_true(BN_mul(n, p, q, ctx))
 436           && TEST_false(ossl_rsa_sp800_56b_check_keypair(key, NULL, -1, 2048))
 437           && TEST_true(BN_add_word(q, 2))
 438           && TEST_true(BN_mul(n, p, q, ctx));
 439 end:
 440     RSA_free(key);
 441     BN_CTX_free(ctx);
 442     return ret;
 443 }
 444
 445 static int keygen_size[] =
 446 {
 447     2048, 3072
 448 };
 449
 450 static int test_sp80056b_keygen(int id)
 451 {
 452     RSA *key = NULL;
 453     int ret;
 454     int sz = keygen_size[id];
 455
 456     ret = TEST_ptr(key = RSA_new())
 457           && TEST_true(ossl_rsa_sp800_56b_generate_key(key, sz, NULL, NULL))
 458           && TEST_true(ossl_rsa_sp800_56b_check_public(key))
 459           && TEST_true(ossl_rsa_sp800_56b_check_private(key))
 460           && TEST_true(ossl_rsa_sp800_56b_check_keypair(key, NULL, -1, sz));
 461
 462     RSA_free(key);
 463     return ret;
 464 }
 465
 466 static int test_check_private_key(void)
 467 {
 468     int ret = 0;
 469     BIGNUM *n = NULL, *d = NULL, *e = NULL;
 470     RSA *key = NULL;
 471
 472     ret = TEST_ptr(key = RSA_new())
 473           /* check NULL pointers fail */
 474           && TEST_false(ossl_rsa_sp800_56b_check_private(key))
 475           /* load private key */
 476           && TEST_ptr(n = bn_load_new(cav_n, sizeof(cav_n)))
 477           && TEST_ptr(d = bn_load_new(cav_d, sizeof(cav_d)))
 478           && TEST_ptr(e = bn_load_new(cav_e, sizeof(cav_e)))
 479           && TEST_true(RSA_set0_key(key, n, e, d));
 480     if (!ret) {
 481         BN_free(n);
 482         BN_free(e);
 483         BN_free(d);
 484         goto end;
 485     }
 486     /* check d is in range */
 487     ret = TEST_true(ossl_rsa_sp800_56b_check_private(key))
 488           /* check d is too low */
 489           && TEST_true(BN_set_word(d, 0))
 490           && TEST_false(ossl_rsa_sp800_56b_check_private(key))
 491           /* check d is too high */
 492           && TEST_ptr(BN_copy(d, n))
 493           && TEST_false(ossl_rsa_sp800_56b_check_private(key));
 494 end:
 495     RSA_free(key);
 496     return ret;
 497 }
 498
 499 static int test_check_public_key(void)
 500 {
 501     int ret = 0;
 502     BIGNUM *n = NULL, *e = NULL;
 503     RSA *key = NULL;
 504
 505     ret = TEST_ptr(key = RSA_new())
 506           /* check NULL pointers fail */
 507           && TEST_false(ossl_rsa_sp800_56b_check_public(key))
 508           /* load public key */
 509           && TEST_ptr(e = bn_load_new(cav_e, sizeof(cav_e)))
 510           && TEST_ptr(n = bn_load_new(cav_n, sizeof(cav_n)))
 511           && TEST_true(RSA_set0_key(key, n, e, NULL));
 512     if (!ret) {
 513         BN_free(e);
 514         BN_free(n);
 515         goto end;
 516     }
 517     /* check public key is valid */
 518     ret = TEST_true(ossl_rsa_sp800_56b_check_public(key))
 519           /* check fail if n is even */
 520           && TEST_true(BN_add_word(n, 1))
 521           && TEST_false(ossl_rsa_sp800_56b_check_public(key))
 522           && TEST_true(BN_sub_word(n, 1))
 523           /* check fail if n is wrong number of bits */
 524           && TEST_true(BN_lshift1(n, n))
 525           && TEST_false(ossl_rsa_sp800_56b_check_public(key))
 526           && TEST_true(BN_rshift1(n, n))
 527           /* test odd exponent fails */
 528           && TEST_true(BN_add_word(e, 1))
 529           && TEST_false(ossl_rsa_sp800_56b_check_public(key))
 530           && TEST_true(BN_sub_word(e, 1))
 531           /* modulus fails composite check */
 532           && TEST_true(BN_add_word(n, 2))
 533           && TEST_false(ossl_rsa_sp800_56b_check_public(key));
 534 end:
 535     RSA_free(key);
 536     return ret;
 537 }
 538
 539 int setup_tests(void)
 540 {
 541     ADD_TEST(test_check_public_exponent);
 542     ADD_TEST(test_check_prime_factor_range);
 543     ADD_TEST(test_check_prime_factor);
 544     ADD_TEST(test_check_private_exponent);
 545     ADD_TEST(test_check_crt_components);
 546     ADD_TEST(test_check_private_key);
 547     ADD_TEST(test_check_public_key);
 548     ADD_TEST(test_invalid_keypair);
 549     ADD_TEST(test_pq_diff);
 550     ADD_ALL_TESTS(test_sp80056b_keygen, (int)OSSL_NELEM(keygen_size));
 551     return 1;
 552 }
 553 #endif