static void TestPassphrase(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>())
{
TestPassphraseSingle(vchSalt, passphrase, rounds, correctKey, correctIV);
for(SecureString::const_iterator i(passphrase.begin()); i != passphrase.end(); ++i)
TestPassphraseSingle(vchSalt, SecureString(i, passphrase.end()), rounds);
}
// passphrase must be at most 256 characters or code may crash
void CMnemonic::ToSeed(SecureString mnemonic, SecureString passphrase, SecureVector& seedRet)
{
SecureString ssSalt = SecureString("mnemonic") + passphrase;
SecureVector vchSalt(ssSalt.begin(), ssSalt.end());
seedRet.resize(64);
// int PKCS5_PBKDF2_HMAC(const char *pass, int passlen,
// const unsigned char *salt, int saltlen, int iter,
// const EVP_MD *digest,
// int keylen, unsigned char *out);
PKCS5_PBKDF2_HMAC(mnemonic.c_str(), mnemonic.size(), &vchSalt[0], vchSalt.size(), 2048, EVP_sha512(), 64, &seedRet[0]);
}