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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);
}