| /* |
| * Copyright 2018-2020 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (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 |
| */ |
| |
| /* |
| * DSA low level APIs are deprecated for public use, but still ok for |
| * internal use. |
| */ |
| #include "internal/deprecated.h" |
| |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "testutil.h" |
| |
| #include <openssl/evp.h> |
| #include <openssl/err.h> |
| #include <openssl/rand.h> |
| |
| #ifndef OPENSSL_NO_DSA |
| #include <openssl/dsa.h> |
| |
| static DSA *dsakey; |
| |
| /* |
| * These parameters are from test/recipes/04-test_pem_data/dsaparam.pem, |
| * converted using dsaparam -C |
| */ |
| static DSA *load_dsa_params(void) |
| { |
| static unsigned char dsap_2048[] = { |
| 0xAE, 0x35, 0x7D, 0x4E, 0x1D, 0x96, 0xE2, 0x9F, 0x00, 0x96, |
| 0x60, 0x5A, 0x6E, 0x4D, 0x07, 0x8D, 0xA5, 0x7C, 0xBC, 0xF9, |
| 0xAD, 0xD7, 0x9F, 0xD5, 0xE9, 0xEE, 0xA6, 0x33, 0x51, 0xDE, |
| 0x7B, 0x72, 0xD2, 0x75, 0xAA, 0x71, 0x77, 0xF1, 0x63, 0xFB, |
| 0xB6, 0xEC, 0x5A, 0xBA, 0x0D, 0x72, 0xA2, 0x1A, 0x1C, 0x64, |
| 0xB8, 0xE5, 0x89, 0x09, 0x6D, 0xC9, 0x6F, 0x0B, 0x7F, 0xD2, |
| 0xCE, 0x9F, 0xEF, 0x87, 0x5A, 0xB6, 0x67, 0x2F, 0xEF, 0xEE, |
| 0xEB, 0x59, 0xF5, 0x5E, 0xFF, 0xA8, 0x28, 0x84, 0x9E, 0x5B, |
| 0x37, 0x09, 0x11, 0x80, 0x7C, 0x08, 0x5C, 0xD5, 0xE1, 0x48, |
| 0x4B, 0xD2, 0x68, 0xFB, 0x3F, 0x9F, 0x2B, 0x6B, 0x6C, 0x0D, |
| 0x48, 0x1B, 0x1A, 0x80, 0xC2, 0xEB, 0x11, 0x1B, 0x37, 0x79, |
| 0xD6, 0x8C, 0x8B, 0x72, 0x3E, 0x67, 0xA5, 0x05, 0x0E, 0x41, |
| 0x8A, 0x9E, 0x35, 0x50, 0xB4, 0xD2, 0x40, 0x27, 0x6B, 0xFD, |
| 0xE0, 0x64, 0x6B, 0x5B, 0x38, 0x42, 0x94, 0xB5, 0x49, 0xDA, |
| 0xEF, 0x6E, 0x78, 0x37, 0xCD, 0x30, 0x89, 0xC3, 0x45, 0x50, |
| 0x7B, 0x9C, 0x8C, 0xE7, 0x1C, 0x98, 0x70, 0x71, 0x5D, 0x79, |
| 0x5F, 0xEF, 0xE8, 0x94, 0x85, 0x53, 0x3E, 0xEF, 0xA3, 0x2C, |
| 0xCE, 0x1A, 0xAB, 0x7D, 0xD6, 0x5E, 0x14, 0xCD, 0x51, 0x54, |
| 0x89, 0x9D, 0x77, 0xE4, 0xF8, 0x22, 0xF0, 0x35, 0x10, 0x75, |
| 0x05, 0x71, 0x51, 0x4F, 0x8C, 0x4C, 0x5C, 0x0D, 0x2C, 0x2C, |
| 0xBE, 0x6C, 0x34, 0xEE, 0x12, 0x82, 0x87, 0x03, 0x19, 0x06, |
| 0x12, 0xA8, 0xAA, 0xF4, 0x0D, 0x3C, 0x49, 0xCC, 0x70, 0x5A, |
| 0xD8, 0x32, 0xEE, 0x32, 0x50, 0x85, 0x70, 0xE8, 0x18, 0xFD, |
| 0x74, 0x80, 0x53, 0x32, 0x57, 0xEE, 0x50, 0xC9, 0xAE, 0xEB, |
| 0xAE, 0xB6, 0x22, 0x32, 0x16, 0x6B, 0x8C, 0x59, 0xDA, 0xEE, |
| 0x1D, 0x33, 0xDF, 0x4C, 0xA2, 0x3D |
| }; |
| static unsigned char dsaq_2048[] = { |
| 0xAD, 0x2D, 0x6E, 0x17, 0xB0, 0xF3, 0xEB, 0xC7, 0xB8, 0xEE, |
| 0x95, 0x78, 0xF2, 0x17, 0xF5, 0x33, 0x01, 0x67, 0xBC, 0xDE, |
| 0x93, 0xFF, 0xEE, 0x40, 0xE8, 0x7F, 0xF1, 0x93, 0x6D, 0x4B, |
| 0x87, 0x13 |
| }; |
| static unsigned char dsag_2048[] = { |
| 0x66, 0x6F, 0xDA, 0x63, 0xA5, 0x8E, 0xD2, 0x4C, 0xD5, 0x45, |
| 0x2D, 0x76, 0x5D, 0x5F, 0xCD, 0x4A, 0xB4, 0x1A, 0x42, 0x35, |
| 0x86, 0x3A, 0x6F, 0xA9, 0xFA, 0x27, 0xAB, 0xDE, 0x03, 0x21, |
| 0x36, 0x0A, 0x07, 0x29, 0xC9, 0x2F, 0x6D, 0x49, 0xA8, 0xF7, |
| 0xC6, 0xF4, 0x92, 0xD7, 0x73, 0xC1, 0xD8, 0x76, 0x0E, 0x61, |
| 0xA7, 0x0B, 0x6E, 0x96, 0xB8, 0xC8, 0xCB, 0x38, 0x35, 0x12, |
| 0x20, 0x79, 0xA5, 0x08, 0x28, 0x35, 0x5C, 0xBC, 0x52, 0x16, |
| 0xAF, 0x52, 0xBA, 0x0F, 0xC3, 0xB1, 0x63, 0x12, 0x27, 0x0B, |
| 0x74, 0xA4, 0x47, 0x43, 0xD6, 0x30, 0xB8, 0x9C, 0x2E, 0x40, |
| 0x14, 0xCD, 0x99, 0x7F, 0xE8, 0x8E, 0x37, 0xB0, 0xA9, 0x3F, |
| 0x54, 0xE9, 0x66, 0x22, 0x61, 0x4C, 0xF8, 0x49, 0x03, 0x57, |
| 0x14, 0x32, 0x1D, 0x37, 0x3D, 0xE2, 0x92, 0xF8, 0x8E, 0xA0, |
| 0x6A, 0x66, 0x63, 0xF0, 0xB0, 0x6E, 0x07, 0x2B, 0x3D, 0xBF, |
| 0xD0, 0x84, 0x6A, 0xAA, 0x1F, 0x30, 0x77, 0x65, 0xE5, 0xFC, |
| 0xF5, 0xEC, 0x55, 0xCE, 0x73, 0xDB, 0xBE, 0xA7, 0x8D, 0x3A, |
| 0x9F, 0x7A, 0xED, 0x4F, 0xAF, 0xA2, 0x80, 0x4C, 0x30, 0x9E, |
| 0x28, 0x49, 0x65, 0x40, 0xF0, 0x03, 0x45, 0x56, 0x99, 0xA2, |
| 0x93, 0x1B, 0x9C, 0x46, 0xDE, 0xBD, 0xA8, 0xAB, 0x5F, 0x90, |
| 0x3F, 0xB7, 0x3F, 0xD4, 0x6F, 0x8D, 0x5A, 0x30, 0xE1, 0xD4, |
| 0x63, 0x3A, 0x6A, 0x7C, 0x8F, 0x24, 0xFC, 0xD9, 0x14, 0x28, |
| 0x09, 0xE4, 0x84, 0x4E, 0x17, 0x43, 0x56, 0xB8, 0xD4, 0x4B, |
| 0xA2, 0x29, 0x45, 0xD3, 0x13, 0xF0, 0xC2, 0x76, 0x9B, 0x01, |
| 0xA0, 0x80, 0x6E, 0x93, 0x63, 0x5E, 0x87, 0x24, 0x20, 0x2A, |
| 0xFF, 0xBB, 0x9F, 0xA8, 0x99, 0x6C, 0xA7, 0x9A, 0x00, 0xB9, |
| 0x7D, 0xDA, 0x66, 0xC9, 0xC0, 0x72, 0x72, 0x22, 0x0F, 0x1A, |
| 0xCC, 0x23, 0xD9, 0xB7, 0x5F, 0x1B |
| }; |
| DSA *dsa = DSA_new(); |
| BIGNUM *p, *q, *g; |
| |
| if (dsa == NULL) |
| return NULL; |
| if (!DSA_set0_pqg(dsa, p = BN_bin2bn(dsap_2048, sizeof(dsap_2048), NULL), |
| q = BN_bin2bn(dsaq_2048, sizeof(dsaq_2048), NULL), |
| g = BN_bin2bn(dsag_2048, sizeof(dsag_2048), NULL))) { |
| DSA_free(dsa); |
| BN_free(p); |
| BN_free(q); |
| BN_free(g); |
| return NULL; |
| } |
| return dsa; |
| } |
| |
| static int genkeys(void) |
| { |
| if (!TEST_ptr(dsakey = load_dsa_params())) |
| return 0; |
| |
| if (!TEST_int_eq(DSA_generate_key(dsakey), 1)) |
| return 0; |
| |
| return 1; |
| } |
| |
| static int sign_and_verify(int len) |
| { |
| /* |
| * Per FIPS 186-4, the hash is recommended to be the same length as q. |
| * If the hash is longer than q, the leftmost N bits are used; if the hash |
| * is shorter, then we left-pad (see appendix C.2.1). |
| */ |
| size_t sigLength; |
| int digestlen = BN_num_bytes(DSA_get0_q(dsakey)); |
| int ok = 0; |
| |
| unsigned char *dataToSign = OPENSSL_malloc(len); |
| unsigned char *paddedData = OPENSSL_malloc(digestlen); |
| unsigned char *signature = NULL; |
| EVP_PKEY_CTX *ctx = NULL; |
| EVP_PKEY *pkey = NULL; |
| |
| if (!TEST_ptr(dataToSign) || |
| !TEST_ptr(paddedData) || |
| !TEST_int_eq(RAND_bytes(dataToSign, len), 1)) |
| goto end; |
| |
| memset(paddedData, 0, digestlen); |
| if (len > digestlen) |
| memcpy(paddedData, dataToSign, digestlen); |
| else |
| memcpy(paddedData + digestlen - len, dataToSign, len); |
| |
| if (!TEST_ptr(pkey = EVP_PKEY_new())) |
| goto end; |
| EVP_PKEY_set1_DSA(pkey, dsakey); |
| |
| if (!TEST_ptr(ctx = EVP_PKEY_CTX_new(pkey, NULL))) |
| goto end; |
| if (!TEST_int_eq(EVP_PKEY_sign_init(ctx), 1)) |
| goto end; |
| |
| if (EVP_PKEY_sign(ctx, NULL, &sigLength, dataToSign, len) != 1) { |
| TEST_error("Failed to get signature length, len=%d", len); |
| goto end; |
| } |
| |
| if (!TEST_ptr(signature = OPENSSL_malloc(sigLength))) |
| goto end; |
| |
| if (EVP_PKEY_sign(ctx, signature, &sigLength, dataToSign, len) != 1) { |
| TEST_error("Failed to sign, len=%d", len); |
| goto end; |
| } |
| |
| /* Check that the signature is okay via the EVP interface */ |
| if (!TEST_int_eq(EVP_PKEY_verify_init(ctx), 1)) |
| goto end; |
| |
| /* ... using the same data we just signed */ |
| if (EVP_PKEY_verify(ctx, signature, sigLength, dataToSign, len) != 1) { |
| TEST_error("EVP verify with unpadded length %d failed\n", len); |
| goto end; |
| } |
| |
| /* ... padding/truncating the data to the appropriate digest size */ |
| if (EVP_PKEY_verify(ctx, signature, sigLength, paddedData, digestlen) != 1) { |
| TEST_error("EVP verify with length %d failed\n", len); |
| goto end; |
| } |
| |
| /* Verify again using the raw DSA interface */ |
| if (DSA_verify(0, dataToSign, len, signature, sigLength, dsakey) != 1) { |
| TEST_error("Verification with unpadded data failed, len=%d", len); |
| goto end; |
| } |
| |
| if (DSA_verify(0, paddedData, digestlen, signature, sigLength, dsakey) != 1) { |
| TEST_error("verify with length %d failed\n", len); |
| goto end; |
| } |
| |
| ok = 1; |
| end: |
| EVP_PKEY_CTX_free(ctx); |
| EVP_PKEY_free(pkey); |
| |
| OPENSSL_free(signature); |
| OPENSSL_free(paddedData); |
| OPENSSL_free(dataToSign); |
| |
| return ok; |
| } |
| |
| static int dsa_exact_size_test(void) { |
| /* |
| * For a 2048-bit p, q should be either 224 or 256 bits per the table in |
| * FIPS 186-4 4.2. |
| */ |
| |
| return sign_and_verify(224 / 8) && sign_and_verify(256 / 8); |
| } |
| |
| static int dsa_small_digest_test(void) { |
| return sign_and_verify(16) && sign_and_verify(1); |
| } |
| |
| static int dsa_large_digest_test(void) { |
| return sign_and_verify(33) && sign_and_verify(64); |
| } |
| |
| void cleanup_tests(void) |
| { |
| DSA_free(dsakey); |
| } |
| |
| #endif /* OPENSSL_NO_DSA */ |
| |
| int setup_tests(void) |
| { |
| #ifndef OPENSSL_NO_DSA |
| if (!genkeys()) |
| return 0; |
| |
| ADD_TEST(dsa_exact_size_test); |
| ADD_TEST(dsa_small_digest_test); |
| ADD_TEST(dsa_large_digest_test); |
| #endif |
| return 1; |
| } |
| |
