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- /* Copyright (c) 2018, 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 "./wycheproof_util.h"
-
- #include <openssl/bn.h>
- #include <openssl/digest.h>
- #include <openssl/ec.h>
- #include <openssl/nid.h>
-
- #include "./file_test.h"
-
-
- bool GetWycheproofResult(FileTest *t, WycheproofResult *out) {
- std::string result;
- if (!t->GetAttribute(&result, "result")) {
- return false;
- }
- if (result == "valid") {
- *out = WycheproofResult::kValid;
- } else if (result == "invalid") {
- *out = WycheproofResult::kInvalid;
- } else if (result == "acceptable") {
- *out = WycheproofResult::kAcceptable;
- } else {
- t->PrintLine("Bad result string '%s'", result.c_str());
- return false;
- }
- return true;
- }
-
- const EVP_MD *GetWycheproofDigest(FileTest *t, const char *key,
- bool instruction) {
- std::string name;
- bool ok =
- instruction ? t->GetInstruction(&name, key) : t->GetAttribute(&name, key);
- if (!ok) {
- return nullptr;
- }
- if (name == "SHA-1") {
- return EVP_sha1();
- }
- if (name == "SHA-224") {
- return EVP_sha224();
- }
- if (name == "SHA-256") {
- return EVP_sha256();
- }
- if (name == "SHA-384") {
- return EVP_sha384();
- }
- if (name == "SHA-512") {
- return EVP_sha512();
- }
- t->PrintLine("Unknown digest '%s'", name.c_str());
- return nullptr;
- }
-
- bssl::UniquePtr<EC_GROUP> GetWycheproofCurve(FileTest *t, const char *key,
- bool instruction) {
- std::string name;
- bool ok =
- instruction ? t->GetInstruction(&name, key) : t->GetAttribute(&name, key);
- if (!ok) {
- return nullptr;
- }
- int nid;
- if (name == "secp224r1") {
- nid = NID_secp224r1;
- } else if (name == "secp256r1") {
- nid = NID_X9_62_prime256v1;
- } else if (name == "secp384r1") {
- nid = NID_secp384r1;
- } else if (name == "secp521r1") {
- nid = NID_secp521r1;
- } else {
- t->PrintLine("Unknown curve '%s'", name.c_str());
- return nullptr;
- }
- return bssl::UniquePtr<EC_GROUP>(EC_GROUP_new_by_curve_name(nid));
- }
-
- bssl::UniquePtr<BIGNUM> GetWycheproofBIGNUM(FileTest *t, const char *key,
- bool instruction) {
- std::string value;
- bool ok = instruction ? t->GetInstruction(&value, key)
- : t->GetAttribute(&value, key);
- if (!ok) {
- return nullptr;
- }
- BIGNUM *bn = nullptr;
- if (BN_hex2bn(&bn, value.c_str()) != static_cast<int>(value.size())) {
- BN_free(bn);
- t->PrintLine("Could not decode value '%s'", value.c_str());
- return nullptr;
- }
- bssl::UniquePtr<BIGNUM> ret(bn);
- if (!value.empty()) {
- // If the high bit is one, this is a negative number in Wycheproof.
- // Wycheproof's tests generally mimic Java APIs, including all their
- // mistakes. See
- // https://github.com/google/wycheproof/blob/0329f5b751ef102bd6b7b7181b6e049522a887f5/java/com/google/security/wycheproof/JsonUtil.java#L62.
- if ('0' > value[0] || value[0] > '7') {
- bssl::UniquePtr<BIGNUM> tmp(BN_new());
- if (!tmp ||
- !BN_set_bit(tmp.get(), value.size() * 4) ||
- !BN_sub(ret.get(), ret.get(), tmp.get())) {
- return nullptr;
- }
- }
- }
- return ret;
- }
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