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- /* Copyright (c) 2017, Google Inc.
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
-
- #include "cavp_test_util.h"
-
- #include <openssl/bn.h>
- #include <openssl/digest.h>
- #include <openssl/ec.h>
- #include <openssl/nid.h>
-
-
- std::string EncodeHex(const uint8_t *in, size_t in_len) {
- static const char kHexDigits[] = "0123456789abcdef";
- std::string ret;
- ret.reserve(in_len * 2);
- for (size_t i = 0; i < in_len; i++) {
- ret += kHexDigits[in[i] >> 4];
- ret += kHexDigits[in[i] & 0xf];
- }
- return ret;
- }
-
- const EVP_CIPHER *GetCipher(const std::string &name) {
- if (name == "des-cbc") {
- return EVP_des_cbc();
- } else if (name == "des-ecb") {
- return EVP_des_ecb();
- } else if (name == "des-ede") {
- return EVP_des_ede();
- } else if (name == "des-ede3") {
- return EVP_des_ede3();
- } else if (name == "des-ede-cbc") {
- return EVP_des_ede_cbc();
- } else if (name == "des-ede3-cbc") {
- return EVP_des_ede3_cbc();
- } else if (name == "rc4") {
- return EVP_rc4();
- } else if (name == "aes-128-ecb") {
- return EVP_aes_128_ecb();
- } else if (name == "aes-256-ecb") {
- return EVP_aes_256_ecb();
- } else if (name == "aes-128-cbc") {
- return EVP_aes_128_cbc();
- } else if (name == "aes-128-gcm") {
- return EVP_aes_128_gcm();
- } else if (name == "aes-128-ofb") {
- return EVP_aes_128_ofb();
- } else if (name == "aes-192-cbc") {
- return EVP_aes_192_cbc();
- } else if (name == "aes-192-ctr") {
- return EVP_aes_192_ctr();
- } else if (name == "aes-192-ecb") {
- return EVP_aes_192_ecb();
- } else if (name == "aes-256-cbc") {
- return EVP_aes_256_cbc();
- } else if (name == "aes-128-ctr") {
- return EVP_aes_128_ctr();
- } else if (name == "aes-256-ctr") {
- return EVP_aes_256_ctr();
- } else if (name == "aes-256-gcm") {
- return EVP_aes_256_gcm();
- } else if (name == "aes-256-ofb") {
- return EVP_aes_256_ofb();
- }
- return nullptr;
- }
-
- bool CipherOperation(const EVP_CIPHER *cipher, std::vector<uint8_t> *out,
- bool encrypt, const std::vector<uint8_t> &key,
- const std::vector<uint8_t> &iv,
- const std::vector<uint8_t> &in) {
- bssl::ScopedEVP_CIPHER_CTX ctx;
- if (!EVP_CipherInit_ex(ctx.get(), cipher, nullptr, nullptr, nullptr,
- encrypt ? 1 : 0)) {
- return false;
- }
- if (!iv.empty() && iv.size() != EVP_CIPHER_CTX_iv_length(ctx.get())) {
- return false;
- }
-
- int result_len1 = 0, result_len2;
- *out = std::vector<uint8_t>(in.size());
- if (!EVP_CIPHER_CTX_set_key_length(ctx.get(), key.size()) ||
- !EVP_CipherInit_ex(ctx.get(), nullptr, nullptr, key.data(), iv.data(),
- -1) ||
- !EVP_CIPHER_CTX_set_padding(ctx.get(), 0) ||
- !EVP_CipherUpdate(ctx.get(), out->data(), &result_len1, in.data(),
- in.size()) ||
- !EVP_CipherFinal_ex(ctx.get(), out->data() + result_len1, &result_len2)) {
- return false;
- }
- out->resize(result_len1 + result_len2);
-
- return true;
- }
-
- bool AEADEncrypt(const EVP_AEAD *aead, std::vector<uint8_t> *ct,
- std::vector<uint8_t> *tag, size_t tag_len,
- const std::vector<uint8_t> &key,
- const std::vector<uint8_t> &pt,
- const std::vector<uint8_t> &aad,
- const std::vector<uint8_t> &iv) {
- bssl::ScopedEVP_AEAD_CTX ctx;
- if (!EVP_AEAD_CTX_init(ctx.get(), aead, key.data(), key.size(), tag_len,
- nullptr)) {
- return false;
- }
-
- std::vector<uint8_t> out;
- out.resize(pt.size() + EVP_AEAD_max_overhead(aead));
- size_t out_len;
- if (!EVP_AEAD_CTX_seal(ctx.get(), out.data(), &out_len, out.size(), iv.data(),
- iv.size(), pt.data(), pt.size(), aad.data(),
- aad.size())) {
- return false;
- }
- out.resize(out_len);
-
- ct->assign(out.begin(), out.end() - tag_len);
- tag->assign(out.end() - tag_len, out.end());
-
- return true;
- }
-
- bool AEADDecrypt(const EVP_AEAD *aead, std::vector<uint8_t> *pt, size_t pt_len,
- const std::vector<uint8_t> &key,
- const std::vector<uint8_t> &aad,
- const std::vector<uint8_t> &ct,
- const std::vector<uint8_t> &tag,
- const std::vector<uint8_t> &iv) {
- bssl::ScopedEVP_AEAD_CTX ctx;
- if (!EVP_AEAD_CTX_init_with_direction(ctx.get(), aead, key.data(), key.size(),
- tag.size(), evp_aead_open)) {
- return false;
- }
- std::vector<uint8_t> in = ct;
- in.reserve(ct.size() + tag.size());
- in.insert(in.end(), tag.begin(), tag.end());
-
- pt->resize(pt_len);
- size_t out_pt_len;
- if (!EVP_AEAD_CTX_open(ctx.get(), pt->data(), &out_pt_len, pt->size(),
- iv.data(), iv.size(), in.data(), in.size(), aad.data(),
- aad.size()) ||
- out_pt_len != pt_len) {
- return false;
- }
- return true;
- }
-
- static int HexToBIGNUM(bssl::UniquePtr<BIGNUM> *out, const char *in) {
- BIGNUM *raw = NULL;
- int ret = BN_hex2bn(&raw, in);
- out->reset(raw);
- return ret;
- }
-
- bssl::UniquePtr<BIGNUM> GetBIGNUM(FileTest *t, const char *attribute) {
- std::string hex;
- if (!t->GetAttribute(&hex, attribute)) {
- return nullptr;
- }
-
- bssl::UniquePtr<BIGNUM> ret;
- if (HexToBIGNUM(&ret, hex.c_str()) != static_cast<int>(hex.size())) {
- t->PrintLine("Could not decode '%s'.", hex.c_str());
- return nullptr;
- }
- return ret;
- }
-
- int GetECGroupNIDFromInstruction(FileTest *t, const char **out_str) {
- const char *dummy;
- if (out_str == nullptr) {
- out_str = &dummy;
- }
-
- if (t->HasInstruction("P-224")) {
- *out_str = "P-224";
- return NID_secp224r1;
- }
- if (t->HasInstruction("P-256")) {
- *out_str = "P-256";
- return NID_X9_62_prime256v1;
- }
- if (t->HasInstruction("P-384")) {
- *out_str = "P-384";
- return NID_secp384r1;
- }
- if (t->HasInstruction("P-521")) {
- *out_str = "P-521";
- return NID_secp521r1;
- }
- t->PrintLine("No supported group specified.");
- return NID_undef;
- }
-
- const EVP_MD *GetDigestFromInstruction(FileTest *t) {
- if (t->HasInstruction("SHA-1")) {
- return EVP_sha1();
- }
- if (t->HasInstruction("SHA-224")) {
- return EVP_sha224();
- }
- if (t->HasInstruction("SHA-256")) {
- return EVP_sha256();
- }
- if (t->HasInstruction("SHA-384")) {
- return EVP_sha384();
- }
- if (t->HasInstruction("SHA-512")) {
- return EVP_sha512();
- }
- t->PrintLine("No supported digest function specified.");
- return nullptr;
- }
-
- void EchoComment(const std::string& comment) {
- fwrite(comment.c_str(), comment.size(), 1, stdout);
- }
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