void BenchMarkVerification(const char *name, const PK_Signer &priv, PK_Verifier &pub, double timeTotal, bool pc=false)
{
unsigned int len = 16;
AlignedSecByteBlock message(len), signature(pub.SignatureLength());
GlobalRNG().GenerateBlock(message, len);
priv.SignMessage(GlobalRNG(), message, len, signature);
const clock_t start = clock();
unsigned int i;
double timeTaken;
for (timeTaken=(double)0, i=0; timeTaken < timeTotal; timeTaken = double(clock() - start) / CLOCK_TICKS_PER_SECOND, i++)
{
// The return value is ignored because we are interested in throughput
bool unused = pub.VerifyMessage(message, len, signature, signature.size());
CRYPTOPP_UNUSED(unused);
}
OutputResultOperations(name, "Verification", pc, i, timeTaken);
if (!pc && pub.GetMaterial().SupportsPrecomputation())
{
pub.AccessMaterial().Precompute(16);
BenchMarkVerification(name, priv, pub, timeTotal, true);
}
}
bool ProfileSignatureValidate(PK_Signer &priv, PK_Verifier &pub, const byte *input,
const size_t inputLength, string description, bool thorough = false)
{
bool pass = true, fail;
fail = !pub.GetMaterial().Validate(GlobalRNG(), thorough ? 3 : 2) || !priv.GetMaterial().Validate(GlobalRNG(), thorough ? 3 : 2);
assert(pass && !fail);
SecByteBlock signature(priv.MaxSignatureLength());
std::chrono::steady_clock::time_point signStartTime = std::chrono::steady_clock::now();
size_t signatureLength = priv.SignMessage(GlobalRNG(), input, inputLength, signature);
std::chrono::steady_clock::time_point signEndTime = std::chrono::steady_clock::now();
size_t signNanoSeconds = std::chrono::duration_cast<std::chrono::nanoseconds>(signEndTime - signStartTime).count();
cout << generateCSVString(description, "sign", signNanoSeconds) << endl;
std::chrono::steady_clock::time_point verifyStartTime = std::chrono::steady_clock::now();
fail = !pub.VerifyMessage(input, inputLength, signature, signatureLength);
std::chrono::steady_clock::time_point verifyEndTime = std::chrono::steady_clock::now();
size_t verifyNanoSeconds = std::chrono::duration_cast<std::chrono::nanoseconds>(verifyEndTime - verifyStartTime).count();
cout << generateCSVString(description, "verify", verifyNanoSeconds) << endl;
assert(pass && !fail);
return pass;
}
bool SignatureValidate(PK_Signer &priv, PK_Verifier &pub, bool thorough = false)
{
bool pass = true, fail;
fail = !pub.GetMaterial().Validate(GlobalRNG(), thorough ? 3 : 2) || !priv.GetMaterial().Validate(GlobalRNG(), thorough ? 3 : 2);
pass = pass && !fail;
cout << (fail ? "FAILED " : "passed ");
cout << "signature key validation\n";
static const byte message[] = "test message";
const unsigned int messageLen = COUNTOF(message);
SecByteBlock signature(priv.MaxSignatureLength());
size_t signatureLength = priv.SignMessage(GlobalRNG(), message, messageLen, signature);
fail = !pub.VerifyMessage(message, messageLen, signature, signatureLength);
pass = pass && !fail;
cout << (fail ? "FAILED " : "passed ");
cout << "signature and verification\n";
++signature[0];
fail = pub.VerifyMessage(message, messageLen, signature, signatureLength);
pass = pass && !fail;
cout << (fail ? "FAILED " : "passed ");
cout << "checking invalid signature" << endl;
if (priv.MaxRecoverableLength() > 0)
{
signatureLength = priv.SignMessageWithRecovery(GlobalRNG(), message, messageLen, NULL, 0, signature);
SecByteBlock recovered(priv.MaxRecoverableLengthFromSignatureLength(signatureLength));
DecodingResult result = pub.RecoverMessage(recovered, NULL, 0, signature, signatureLength);
fail = !(result.isValidCoding && result.messageLength == messageLen && VerifyBufsEqual(recovered, message, messageLen));
pass = pass && !fail;
cout << (fail ? "FAILED " : "passed ");
cout << "signature and verification with recovery" << endl;
++signature[0];
result = pub.RecoverMessage(recovered, NULL, 0, signature, signatureLength);
fail = result.isValidCoding;
pass = pass && !fail;
cout << (fail ? "FAILED " : "passed ");
cout << "recovery with invalid signature" << endl;
}
return pass;
}
void BenchMarkVerification(const char *name, const PK_Signer &priv, PK_Verifier &pub, double timeTotal, bool pc=false)
{
unsigned int len = 16;
LC_RNG rng((word32)time(NULL));
AlignedSecByteBlock message(len), signature(pub.SignatureLength());
rng.GenerateBlock(message, len);
priv.SignMessage(rng, message, len, signature);
clock_t start = clock();
unsigned int i;
double timeTaken;
for (timeTaken=(double)0, i=0; timeTaken < timeTotal; timeTaken = double(clock() - start) / CLOCK_TICKS_PER_SECOND, i++)
pub.VerifyMessage(message, len, signature, signature.size());
OutputResultOperations(name, "Verification", pc, i, timeTaken);
if (!pc && pub.GetMaterial().SupportsPrecomputation())
{
pub.AccessMaterial().Precompute(16);
BenchMarkVerification(name, priv, pub, timeTotal, true);
}
}