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tests: Remove OldSetKeyFromPassphrase/OldEncrypt/OldDecrypt
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@practicalswift
practicalswift committed Aug 14, 2017
1 parent 140de14 commit a897d0e
Showing 1 changed file with 11 additions and 122 deletions.
133 changes: 11 additions & 122 deletions src/wallet/test/crypto_tests.cpp
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Expand Up @@ -9,112 +9,25 @@
#include <vector>

#include <boost/test/unit_test.hpp>
#include <openssl/aes.h>
#include <openssl/evp.h>

BOOST_FIXTURE_TEST_SUITE(wallet_crypto, BasicTestingSetup)

bool OldSetKeyFromPassphrase(const SecureString& strKeyData, const std::vector<unsigned char>& chSalt, const unsigned int nRounds, const unsigned int nDerivationMethod, unsigned char* chKey, unsigned char* chIV)
{
if (nRounds < 1 || chSalt.size() != WALLET_CRYPTO_SALT_SIZE)
return false;

int i = 0;
if (nDerivationMethod == 0)
i = EVP_BytesToKey(EVP_aes_256_cbc(), EVP_sha512(), &chSalt[0],
(unsigned char *)&strKeyData[0], strKeyData.size(), nRounds, chKey, chIV);

if (i != (int)WALLET_CRYPTO_KEY_SIZE)
{
memory_cleanse(chKey, WALLET_CRYPTO_KEY_SIZE);
memory_cleanse(chIV, WALLET_CRYPTO_IV_SIZE);
return false;
}
return true;
}

bool OldEncrypt(const CKeyingMaterial& vchPlaintext, std::vector<unsigned char> &vchCiphertext, const unsigned char chKey[32], const unsigned char chIV[16])
{
// max ciphertext len for a n bytes of plaintext is
// n + AES_BLOCK_SIZE - 1 bytes
int nLen = vchPlaintext.size();
int nCLen = nLen + AES_BLOCK_SIZE, nFLen = 0;
vchCiphertext = std::vector<unsigned char> (nCLen);

EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();

if (!ctx) return false;

bool fOk = true;

EVP_CIPHER_CTX_init(ctx);
if (fOk) fOk = EVP_EncryptInit_ex(ctx, EVP_aes_256_cbc(), nullptr, chKey, chIV) != 0;
if (fOk) fOk = EVP_EncryptUpdate(ctx, &vchCiphertext[0], &nCLen, &vchPlaintext[0], nLen) != 0;
if (fOk) fOk = EVP_EncryptFinal_ex(ctx, (&vchCiphertext[0]) + nCLen, &nFLen) != 0;
EVP_CIPHER_CTX_cleanup(ctx);

EVP_CIPHER_CTX_free(ctx);

if (!fOk) return false;

vchCiphertext.resize(nCLen + nFLen);
return true;
}

bool OldDecrypt(const std::vector<unsigned char>& vchCiphertext, CKeyingMaterial& vchPlaintext, const unsigned char chKey[32], const unsigned char chIV[16])
{
// plaintext will always be equal to or lesser than length of ciphertext
int nLen = vchCiphertext.size();
int nPLen = nLen, nFLen = 0;

vchPlaintext = CKeyingMaterial(nPLen);

EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();

if (!ctx) return false;

bool fOk = true;

EVP_CIPHER_CTX_init(ctx);
if (fOk) fOk = EVP_DecryptInit_ex(ctx, EVP_aes_256_cbc(), nullptr, chKey, chIV) != 0;
if (fOk) fOk = EVP_DecryptUpdate(ctx, &vchPlaintext[0], &nPLen, &vchCiphertext[0], nLen) != 0;
if (fOk) fOk = EVP_DecryptFinal_ex(ctx, (&vchPlaintext[0]) + nPLen, &nFLen) != 0;
EVP_CIPHER_CTX_cleanup(ctx);

EVP_CIPHER_CTX_free(ctx);

if (!fOk) return false;

vchPlaintext.resize(nPLen + nFLen);
return true;
}

class TestCrypter
{
public:
static void TestPassphraseSingle(const std::vector<unsigned char>& vchSalt, const SecureString& passphrase, uint32_t rounds,
const std::vector<unsigned char>& correctKey = std::vector<unsigned char>(),
const std::vector<unsigned char>& correctIV=std::vector<unsigned char>())
{
unsigned char chKey[WALLET_CRYPTO_KEY_SIZE];
unsigned char chIV[WALLET_CRYPTO_IV_SIZE];

CCrypter crypt;
crypt.SetKeyFromPassphrase(passphrase, vchSalt, rounds, 0);

OldSetKeyFromPassphrase(passphrase, vchSalt, rounds, 0, chKey, chIV);

BOOST_CHECK_MESSAGE(memcmp(chKey, crypt.vchKey.data(), crypt.vchKey.size()) == 0, \
HexStr(chKey, chKey+sizeof(chKey)) + std::string(" != ") + HexStr(crypt.vchKey));
BOOST_CHECK_MESSAGE(memcmp(chIV, crypt.vchIV.data(), crypt.vchIV.size()) == 0, \
HexStr(chIV, chIV+sizeof(chIV)) + std::string(" != ") + HexStr(crypt.vchIV));

if(!correctKey.empty())
BOOST_CHECK_MESSAGE(memcmp(chKey, &correctKey[0], sizeof(chKey)) == 0, \
HexStr(chKey, chKey+sizeof(chKey)) + std::string(" != ") + HexStr(correctKey.begin(), correctKey.end()));
BOOST_CHECK_MESSAGE(memcmp(crypt.vchKey.data(), correctKey.data(), crypt.vchKey.size()) == 0, \
HexStr(crypt.vchKey.begin(), crypt.vchKey.end()) + std::string(" != ") + HexStr(correctKey.begin(), correctKey.end()));
if(!correctIV.empty())
BOOST_CHECK_MESSAGE(memcmp(chIV, &correctIV[0], sizeof(chIV)) == 0,
HexStr(chIV, chIV+sizeof(chIV)) + std::string(" != ") + HexStr(correctIV.begin(), correctIV.end()));
BOOST_CHECK_MESSAGE(memcmp(crypt.vchIV.data(), correctIV.data(), crypt.vchIV.size()) == 0,
HexStr(crypt.vchIV.begin(), crypt.vchIV.end()) + std::string(" != ") + HexStr(correctIV.begin(), correctIV.end()));
}

static void TestPassphrase(const std::vector<unsigned char>& vchSalt, const SecureString& passphrase, uint32_t rounds,
Expand All @@ -126,50 +39,26 @@ static void TestPassphrase(const std::vector<unsigned char>& vchSalt, const Secu
TestPassphraseSingle(vchSalt, SecureString(i, passphrase.end()), rounds);
}


static void TestDecrypt(const CCrypter& crypt, const std::vector<unsigned char>& vchCiphertext, \
const std::vector<unsigned char>& vchPlaintext = std::vector<unsigned char>())
{
CKeyingMaterial vchDecrypted1;
CKeyingMaterial vchDecrypted2;
int result1, result2;
result1 = crypt.Decrypt(vchCiphertext, vchDecrypted1);
result2 = OldDecrypt(vchCiphertext, vchDecrypted2, crypt.vchKey.data(), crypt.vchIV.data());
BOOST_CHECK(result1 == result2);

// These two should be equal. However, OpenSSL 1.0.1j introduced a change
// that would zero all padding except for the last byte for failed decrypts.
// This behavior was reverted for 1.0.1k.
if (vchDecrypted1 != vchDecrypted2 && vchDecrypted1.size() >= AES_BLOCK_SIZE && SSLeay() == 0x100010afL)
{
for(CKeyingMaterial::iterator it = vchDecrypted1.end() - AES_BLOCK_SIZE; it != vchDecrypted1.end() - 1; it++)
*it = 0;
}

BOOST_CHECK_MESSAGE(vchDecrypted1 == vchDecrypted2, HexStr(vchDecrypted1.begin(), vchDecrypted1.end()) + " != " + HexStr(vchDecrypted2.begin(), vchDecrypted2.end()));

CKeyingMaterial vchDecrypted;
crypt.Decrypt(vchCiphertext, vchDecrypted);
if (vchPlaintext.size())
BOOST_CHECK(CKeyingMaterial(vchPlaintext.begin(), vchPlaintext.end()) == vchDecrypted2);
BOOST_CHECK(CKeyingMaterial(vchPlaintext.begin(), vchPlaintext.end()) == vchDecrypted);
}

static void TestEncryptSingle(const CCrypter& crypt, const CKeyingMaterial& vchPlaintext,
const std::vector<unsigned char>& vchCiphertextCorrect = std::vector<unsigned char>())
{
std::vector<unsigned char> vchCiphertext1;
std::vector<unsigned char> vchCiphertext2;
int result1 = crypt.Encrypt(vchPlaintext, vchCiphertext1);

int result2 = OldEncrypt(vchPlaintext, vchCiphertext2, crypt.vchKey.data(), crypt.vchIV.data());
BOOST_CHECK(result1 == result2);
BOOST_CHECK(vchCiphertext1 == vchCiphertext2);
std::vector<unsigned char> vchCiphertext;
crypt.Encrypt(vchPlaintext, vchCiphertext);

if (!vchCiphertextCorrect.empty())
BOOST_CHECK(vchCiphertext2 == vchCiphertextCorrect);
BOOST_CHECK(vchCiphertext == vchCiphertextCorrect);

const std::vector<unsigned char> vchPlaintext2(vchPlaintext.begin(), vchPlaintext.end());

if(vchCiphertext1 == vchCiphertext2)
TestDecrypt(crypt, vchCiphertext1, vchPlaintext2);
TestDecrypt(crypt, vchCiphertext, vchPlaintext2);
}

static void TestEncrypt(const CCrypter& crypt, const std::vector<unsigned char>& vchPlaintextIn, \
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