/* * Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the OpenSSL license (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #include #include #include "internal/nelem.h" #include #include #include #include #include "internal/thread_once.h" #include "crypto/rand.h" typedef struct test_ctx_st { const unsigned char *entropy; size_t entropylen; int entropycnt; const unsigned char *nonce; size_t noncelen; int noncecnt; } TEST_CTX; static int app_data_index = -1; static CRYPTO_ONCE get_index_once = CRYPTO_ONCE_STATIC_INIT; DEFINE_RUN_ONCE_STATIC(drbg_app_data_index_init) { app_data_index = RAND_DRBG_get_ex_new_index(0L, NULL, NULL, NULL, NULL); return 1; } enum drbg_kat_type { NO_RESEED, PR_FALSE, PR_TRUE }; enum drbg_df { USE_DF, NO_DF, NA }; struct drbg_kat_no_reseed { size_t count; const unsigned char *entropyin; const unsigned char *nonce; const unsigned char *persstr; const unsigned char *addin1; const unsigned char *addin2; const unsigned char *retbytes; }; struct drbg_kat_pr_false { size_t count; const unsigned char *entropyin; const unsigned char *nonce; const unsigned char *persstr; const unsigned char *entropyinreseed; const unsigned char *addinreseed; const unsigned char *addin1; const unsigned char *addin2; const unsigned char *retbytes; }; struct drbg_kat_pr_true { size_t count; const unsigned char *entropyin; const unsigned char *nonce; const unsigned char *persstr; const unsigned char *entropyinpr1; const unsigned char *addin1; const unsigned char *entropyinpr2; const unsigned char *addin2; const unsigned char *retbytes; }; struct drbg_kat { enum drbg_kat_type type; enum drbg_df df; int nid; size_t entropyinlen; size_t noncelen; size_t persstrlen; size_t addinlen; size_t retbyteslen; const void *t; }; /* * Excerpt from test/drbg_cavs_data.c * DRBG test vectors from: * https://csrc.nist.gov/projects/cryptographic-algorithm-validation-program/ */ static const unsigned char kat1308_entropyin[] = { 0x7c, 0x5d, 0x90, 0x70, 0x3b, 0x8a, 0xc7, 0x0f, 0x23, 0x73, 0x24, 0x9c, 0xa7, 0x15, 0x41, 0x71, 0x7a, 0x31, 0xea, 0x32, 0xfc, 0x28, 0x0d, 0xd7, 0x5b, 0x09, 0x01, 0x98, 0x1b, 0xe2, 0xa5, 0x53, 0xd9, 0x05, 0x32, 0x97, 0xec, 0xbe, 0x86, 0xfd, 0x1c, 0x1c, 0x71, 0x4c, 0x52, 0x29, 0x9e, 0x52, }; static const unsigned char kat1308_nonce[] = {0}; static const unsigned char kat1308_persstr[] = { 0xdc, 0x07, 0x2f, 0x68, 0xfa, 0x77, 0x03, 0x23, 0x42, 0xb0, 0xf5, 0xa2, 0xd9, 0xad, 0xa1, 0xd0, 0xad, 0xa2, 0x14, 0xb4, 0xd0, 0x8e, 0xfb, 0x39, 0xdd, 0xc2, 0xac, 0xfb, 0x98, 0xdf, 0x7f, 0xce, 0x4c, 0x75, 0x56, 0x45, 0xcd, 0x86, 0x93, 0x74, 0x90, 0x6e, 0xf6, 0x9e, 0x85, 0x7e, 0xfb, 0xc3, }; static const unsigned char kat1308_addin0[] = { 0x52, 0x25, 0xc4, 0x2f, 0x03, 0xce, 0x29, 0x71, 0xc5, 0x0b, 0xc3, 0x4e, 0xad, 0x8d, 0x6f, 0x17, 0x82, 0xe1, 0xf3, 0xfd, 0xfd, 0x9b, 0x94, 0x9a, 0x1d, 0xac, 0xd0, 0xd4, 0x3f, 0x2b, 0xe3, 0xab, 0x7c, 0x3d, 0x3e, 0x5a, 0x68, 0xbb, 0xa4, 0x74, 0x68, 0x1a, 0xc6, 0x27, 0xff, 0xe0, 0xc0, 0x6c, }; static const unsigned char kat1308_addin1[] = { 0xdc, 0x91, 0xd7, 0xb7, 0xb9, 0x94, 0x79, 0x0f, 0x06, 0xc4, 0x70, 0x19, 0x33, 0x25, 0x7c, 0x96, 0x01, 0xa0, 0x62, 0xb0, 0x50, 0xe6, 0xc0, 0x3a, 0x56, 0x8f, 0xc5, 0x50, 0x48, 0xc6, 0xf4, 0x49, 0xe5, 0x70, 0x16, 0x2e, 0xae, 0xf2, 0x99, 0xb4, 0x2d, 0x70, 0x18, 0x16, 0xcd, 0xe0, 0x24, 0xe4, }; static const unsigned char kat1308_retbits[] = { 0xde, 0xf8, 0x91, 0x1b, 0xf1, 0xe1, 0xa9, 0x97, 0xd8, 0x61, 0x84, 0xe2, 0xdb, 0x83, 0x3e, 0x60, 0x45, 0xcd, 0xc8, 0x66, 0x93, 0x28, 0xc8, 0x92, 0xbc, 0x25, 0xae, 0xe8, 0xb0, 0xed, 0xed, 0x16, 0x3d, 0xa5, 0xf9, 0x0f, 0xb3, 0x72, 0x08, 0x84, 0xac, 0x3c, 0x3b, 0xaa, 0x5f, 0xf9, 0x7d, 0x63, 0x3e, 0xde, 0x59, 0x37, 0x0e, 0x40, 0x12, 0x2b, 0xbc, 0x6c, 0x96, 0x53, 0x26, 0x32, 0xd0, 0xb8, }; static const struct drbg_kat_no_reseed kat1308_t = { 2, kat1308_entropyin, kat1308_nonce, kat1308_persstr, kat1308_addin0, kat1308_addin1, kat1308_retbits }; static const struct drbg_kat kat1308 = { NO_RESEED, NO_DF, NID_aes_256_ctr, 48, 0, 48, 48, 64, &kat1308_t }; static const unsigned char kat1465_entropyin[] = { 0xc9, 0x96, 0x3a, 0x15, 0x51, 0x76, 0x4f, 0xe0, 0x45, 0x82, 0x8a, 0x64, 0x87, 0xbe, 0xaa, 0xc0, }; static const unsigned char kat1465_nonce[] = { 0x08, 0xcd, 0x69, 0x39, 0xf8, 0x58, 0x9a, 0x85, }; static const unsigned char kat1465_persstr[] = {0}; static const unsigned char kat1465_entropyinreseed[] = { 0x16, 0xcc, 0x35, 0x15, 0xb1, 0x17, 0xf5, 0x33, 0x80, 0x9a, 0x80, 0xc5, 0x1f, 0x4b, 0x7b, 0x51, }; static const unsigned char kat1465_addinreseed[] = { 0xf5, 0x3d, 0xf1, 0x2e, 0xdb, 0x28, 0x1c, 0x00, 0x7b, 0xcb, 0xb6, 0x12, 0x61, 0x9f, 0x26, 0x5f, }; static const unsigned char kat1465_addin0[] = { 0xe2, 0x67, 0x06, 0x62, 0x09, 0xa7, 0xcf, 0xd6, 0x84, 0x8c, 0x20, 0xf6, 0x10, 0x5a, 0x73, 0x9c, }; static const unsigned char kat1465_addin1[] = { 0x26, 0xfa, 0x50, 0xe1, 0xb3, 0xcb, 0x65, 0xed, 0xbc, 0x6d, 0xda, 0x18, 0x47, 0x99, 0x1f, 0xeb, }; static const unsigned char kat1465_retbits[] = { 0xf9, 0x47, 0xc6, 0xb0, 0x58, 0xa8, 0x66, 0x8a, 0xf5, 0x2b, 0x2a, 0x6d, 0x4e, 0x24, 0x6f, 0x65, 0xbf, 0x51, 0x22, 0xbf, 0xe8, 0x8d, 0x6c, 0xeb, 0xf9, 0x68, 0x7f, 0xed, 0x3b, 0xdd, 0x6b, 0xd5, 0x28, 0x47, 0x56, 0x52, 0xda, 0x50, 0xf0, 0x90, 0x73, 0x95, 0x06, 0x58, 0xaf, 0x08, 0x98, 0x6e, 0x24, 0x18, 0xfd, 0x2f, 0x48, 0x72, 0x57, 0xd6, 0x59, 0xab, 0xe9, 0x41, 0x58, 0xdb, 0x27, 0xba, }; static const struct drbg_kat_pr_false kat1465_t = { 9, kat1465_entropyin, kat1465_nonce, kat1465_persstr, kat1465_entropyinreseed, kat1465_addinreseed, kat1465_addin0, kat1465_addin1, kat1465_retbits }; static const struct drbg_kat kat1465 = { PR_FALSE, USE_DF, NID_aes_128_ctr, 16, 8, 0, 16, 64, &kat1465_t }; static const unsigned char kat3146_entropyin[] = { 0xd7, 0x08, 0x42, 0x82, 0xc2, 0xd2, 0xd1, 0xde, 0x01, 0xb4, 0x36, 0xb3, 0x7f, 0xbd, 0xd3, 0xdd, 0xb3, 0xc4, 0x31, 0x4f, 0x8f, 0xa7, 0x10, 0xf4, }; static const unsigned char kat3146_nonce[] = { 0x7b, 0x9e, 0xcd, 0x49, 0x4f, 0x46, 0xa0, 0x08, 0x32, 0xff, 0x2e, 0xc3, 0x50, 0x86, 0xca, 0xca, }; static const unsigned char kat3146_persstr[] = {0}; static const unsigned char kat3146_entropyinpr1[] = { 0x68, 0xd0, 0x7b, 0xa4, 0xe7, 0x22, 0x19, 0xe6, 0xb6, 0x46, 0x6a, 0xda, 0x8e, 0x67, 0xea, 0x63, 0x3f, 0xaf, 0x2f, 0x6c, 0x9d, 0x5e, 0x48, 0x15, }; static const unsigned char kat3146_addinpr1[] = { 0x70, 0x0f, 0x54, 0xf4, 0x53, 0xde, 0xca, 0x61, 0x5c, 0x49, 0x51, 0xd1, 0x41, 0xc4, 0xf1, 0x2f, 0x65, 0xfb, 0x7e, 0xbc, 0x9b, 0x14, 0xba, 0x90, 0x05, 0x33, 0x7e, 0x64, 0xb7, 0x2b, 0xaf, 0x99, }; static const unsigned char kat3146_entropyinpr2[] = { 0xeb, 0x77, 0xb0, 0xe9, 0x2d, 0x31, 0xc8, 0x66, 0xc5, 0xc4, 0xa7, 0xf7, 0x6c, 0xb2, 0x74, 0x36, 0x4b, 0x25, 0x78, 0x04, 0xd8, 0xd7, 0xd2, 0x34, }; static const unsigned char kat3146_addinpr2[] = { 0x05, 0xcd, 0x2a, 0x97, 0x5a, 0x5d, 0xfb, 0x98, 0xc1, 0xf1, 0x00, 0x0c, 0xed, 0xe6, 0x2a, 0xba, 0xf0, 0x89, 0x1f, 0x5a, 0x4f, 0xd7, 0x48, 0xb3, 0x24, 0xc0, 0x8a, 0x3d, 0x60, 0x59, 0x5d, 0xb6, }; static const unsigned char kat3146_retbits[] = { 0x29, 0x94, 0xa4, 0xa8, 0x17, 0x3e, 0x62, 0x2f, 0x94, 0xdd, 0x40, 0x1f, 0xe3, 0x7e, 0x77, 0xd4, 0x38, 0xbc, 0x0e, 0x49, 0x46, 0xf6, 0x0e, 0x28, 0x91, 0xc6, 0x9c, 0xc4, 0xa6, 0xa1, 0xf8, 0x9a, 0x64, 0x5e, 0x99, 0x76, 0xd0, 0x2d, 0xee, 0xde, 0xe1, 0x2c, 0x93, 0x29, 0x4b, 0x12, 0xcf, 0x87, 0x03, 0x98, 0xb9, 0x74, 0x41, 0xdb, 0x3a, 0x49, 0x9f, 0x92, 0xd0, 0x45, 0xd4, 0x30, 0x73, 0xbb, }; static const struct drbg_kat_pr_true kat3146_t = { 10, kat3146_entropyin, kat3146_nonce, kat3146_persstr, kat3146_entropyinpr1, kat3146_addinpr1, kat3146_entropyinpr2, kat3146_addinpr2, kat3146_retbits }; static const struct drbg_kat kat3146 = { PR_TRUE, USE_DF, NID_aes_192_ctr, 24, 16, 0, 32, 64, &kat3146_t }; static const struct drbg_kat *drbg_test[] = { &kat1308, &kat1465, &kat3146 }; static const size_t drbg_test_nelem = OSSL_NELEM(drbg_test); static size_t kat_entropy(RAND_DRBG *drbg, unsigned char **pout, int entropy, size_t min_len, size_t max_len, int prediction_resistance) { TEST_CTX *t = (TEST_CTX *)RAND_DRBG_get_ex_data(drbg, app_data_index); t->entropycnt++; *pout = (unsigned char *)t->entropy; return t->entropylen; } static size_t kat_nonce(RAND_DRBG *drbg, unsigned char **pout, int entropy, size_t min_len, size_t max_len) { TEST_CTX *t = (TEST_CTX *)RAND_DRBG_get_ex_data(drbg, app_data_index); t->noncecnt++; *pout = (unsigned char *)t->nonce; return t->noncelen; } /* * Do a single NO_RESEED KAT: * * Instantiate * Generate Random Bits (pr=false) * Generate Random Bits (pr=false) * Uninstantiate * * Return 0 on failure. */ static int single_kat_no_reseed(const struct drbg_kat *td) { struct drbg_kat_no_reseed *data = (struct drbg_kat_no_reseed *)td->t; RAND_DRBG *drbg = NULL; unsigned char *buff = NULL; unsigned int flags = 0; int failures = 0; TEST_CTX t; if (td->df != USE_DF) flags |= RAND_DRBG_FLAG_CTR_NO_DF; if ((drbg = RAND_DRBG_new(td->nid, flags, NULL)) == NULL) return 0; if (!RAND_DRBG_set_callbacks(drbg, kat_entropy, NULL, kat_nonce, NULL)) { failures++; goto err; } memset(&t, 0, sizeof(t)); t.entropy = data->entropyin; t.entropylen = td->entropyinlen; t.nonce = data->nonce; t.noncelen = td->noncelen; RAND_DRBG_set_ex_data(drbg, app_data_index, &t); buff = OPENSSL_malloc(td->retbyteslen); if (buff == NULL) { failures++; goto err; } if (!RAND_DRBG_instantiate(drbg, data->persstr, td->persstrlen) || !RAND_DRBG_generate(drbg, buff, td->retbyteslen, 0, data->addin1, td->addinlen) || !RAND_DRBG_generate(drbg, buff, td->retbyteslen, 0, data->addin2, td->addinlen) || memcmp(data->retbytes, buff, td->retbyteslen) != 0) failures++; err: OPENSSL_free(buff); RAND_DRBG_uninstantiate(drbg); RAND_DRBG_free(drbg); return failures == 0; } /*- * Do a single PR_FALSE KAT: * * Instantiate * Reseed * Generate Random Bits (pr=false) * Generate Random Bits (pr=false) * Uninstantiate * * Return 0 on failure. */ static int single_kat_pr_false(const struct drbg_kat *td) { struct drbg_kat_pr_false *data = (struct drbg_kat_pr_false *)td->t; RAND_DRBG *drbg = NULL; unsigned char *buff = NULL; unsigned int flags = 0; int failures = 0; TEST_CTX t; if (td->df != USE_DF) flags |= RAND_DRBG_FLAG_CTR_NO_DF; if ((drbg = RAND_DRBG_new(td->nid, flags, NULL)) == NULL) return 0; if (!RAND_DRBG_set_callbacks(drbg, kat_entropy, NULL, kat_nonce, NULL)) { failures++; goto err; } memset(&t, 0, sizeof(t)); t.entropy = data->entropyin; t.entropylen = td->entropyinlen; t.nonce = data->nonce; t.noncelen = td->noncelen; RAND_DRBG_set_ex_data(drbg, app_data_index, &t); buff = OPENSSL_malloc(td->retbyteslen); if (buff == NULL) { failures++; goto err; } if (!RAND_DRBG_instantiate(drbg, data->persstr, td->persstrlen)) failures++; t.entropy = data->entropyinreseed; t.entropylen = td->entropyinlen; if (!RAND_DRBG_reseed(drbg, data->addinreseed, td->addinlen, 0) || !RAND_DRBG_generate(drbg, buff, td->retbyteslen, 0, data->addin1, td->addinlen) || !RAND_DRBG_generate(drbg, buff, td->retbyteslen, 0, data->addin2, td->addinlen) || memcmp(data->retbytes, buff, td->retbyteslen) != 0) failures++; err: OPENSSL_free(buff); RAND_DRBG_uninstantiate(drbg); RAND_DRBG_free(drbg); return failures == 0; } /*- * Do a single PR_TRUE KAT: * * Instantiate * Generate Random Bits (pr=true) * Generate Random Bits (pr=true) * Uninstantiate * * Return 0 on failure. */ static int single_kat_pr_true(const struct drbg_kat *td) { struct drbg_kat_pr_true *data = (struct drbg_kat_pr_true *)td->t; RAND_DRBG *drbg = NULL; unsigned char *buff = NULL; unsigned int flags = 0; int failures = 0; TEST_CTX t; if (td->df != USE_DF) flags |= RAND_DRBG_FLAG_CTR_NO_DF; if ((drbg = RAND_DRBG_new(td->nid, flags, NULL)) == NULL) return 0; if (!RAND_DRBG_set_callbacks(drbg, kat_entropy, NULL, kat_nonce, NULL)) { failures++; goto err; } memset(&t, 0, sizeof(t)); t.nonce = data->nonce; t.noncelen = td->noncelen; t.entropy = data->entropyin; t.entropylen = td->entropyinlen; RAND_DRBG_set_ex_data(drbg, app_data_index, &t); buff = OPENSSL_malloc(td->retbyteslen); if (buff == NULL) { failures++; goto err; } if (!RAND_DRBG_instantiate(drbg, data->persstr, td->persstrlen)) failures++; t.entropy = data->entropyinpr1; t.entropylen = td->entropyinlen; if (!RAND_DRBG_generate(drbg, buff, td->retbyteslen, 1, data->addin1, td->addinlen)) failures++; t.entropy = data->entropyinpr2; t.entropylen = td->entropyinlen; if (!RAND_DRBG_generate(drbg, buff, td->retbyteslen, 1, data->addin2, td->addinlen) || memcmp(data->retbytes, buff, td->retbyteslen) != 0) failures++; err: OPENSSL_free(buff); RAND_DRBG_uninstantiate(drbg); RAND_DRBG_free(drbg); return failures == 0; } static int test_kats(int i) { const struct drbg_kat *td = drbg_test[i]; int rv = 0; switch (td->type) { case NO_RESEED: if (!single_kat_no_reseed(td)) goto err; break; case PR_FALSE: if (!single_kat_pr_false(td)) goto err; break; case PR_TRUE: if (!single_kat_pr_true(td)) goto err; break; default: /* cant happen */ goto err; } rv = 1; err: return rv; } /*- * Do one expected-error test: * * Instantiate with no entropy supplied * * Return 0 on failure. */ static int test_drbg_sanity(const struct drbg_kat *td) { struct drbg_kat_pr_false *data = (struct drbg_kat_pr_false *)td->t; RAND_DRBG *drbg = NULL; unsigned int flags = 0; int failures = 0; TEST_CTX t; if (td->df != USE_DF) flags |= RAND_DRBG_FLAG_CTR_NO_DF; if ((drbg = RAND_DRBG_new(td->nid, flags, NULL)) == NULL) return 0; if (!RAND_DRBG_set_callbacks(drbg, kat_entropy, NULL, kat_nonce, NULL)) { failures++; goto err; } memset(&t, 0, sizeof(t)); t.entropy = data->entropyin; t.entropylen = 0; /* No entropy */ t.nonce = data->nonce; t.noncelen = td->noncelen; RAND_DRBG_set_ex_data(drbg, app_data_index, &t); ERR_set_mark(); /* This must fail. */ if (RAND_DRBG_instantiate(drbg, data->persstr, td->persstrlen)) failures++; RAND_DRBG_uninstantiate(drbg); ERR_pop_to_mark(); err: RAND_DRBG_free(drbg); return failures == 0; } int rand_drbg_selftest(void) { int i; if (!RUN_ONCE(&get_index_once, drbg_app_data_index_init)) return 0; for (i = 0; i < drbg_test_nelem; i++) { if (test_kats(i) <= 0) return 0; } if (test_drbg_sanity(&kat1465) <= 0) return 0; return 1; }