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Hi,
It seems that I am reopening an old question, comparing once again OpenSSL with Intel IPP. I am interested in performance of RSA key pair generation comparing Intel IPP and OpenSSL. My tests show once again that OpenSSL version outperforms Intel IPP Crypto libraries. My testing methodology is defined as follows:
int runs = 10;
int repetitions = 10;
myInt64 values[repetitions];
measurement_init();
for (int i = 0; i < repetitions; ++i) {
measurement_start();
for (int j = 0; j < runs; ++j) {
status = ippsRSA_GenerateKeys(
pSrcPublicExp,
pModulus, pPublicExp, pPrivateExp,
privateKey, scratchBuffer, nTrials,
primeGen, ippsPRNGen, randomGen
);
}
measurement_stop();
meas_values = meas_values / runs;
}
measurement_finish(values);
qsort(values, meas_i, sizeof(myInt64), cmpMyInt64);
printf("%4d : %llu\n", bitsRSA, values[repetitions / 2]);
- Compile the code using icpc composer_xe_2015.0.077 on OS X Yosemite 10.10.5, running Intel(R) Core(TM) i7-3720Q CPU @ 2.60 GHz (Ivy Bridge). OpenSSL version is 1.0.2d (9 Jul 2015).
- Compile the code using icpc composer_xe_2015.0.090 on Debian 8.3, running Intel(R) Xeon(R) CPU E3-1285L v3 @ 3.10GHz. OpenSSL version is 1.1.0-pre4 (beta) 16 Mar 2016
- Compile the code using -O3 -xHost -no-multibyte-chars, and conisder single core implementation only.
- Use RDTSC as a timing infrastructure
- Run each of the RSA generation functions 10 times, and average the runtimes.
- Repeat each 10 runs for 10 times, and take the median runtime as the final measure.
Obtained results are available bellow:
More information detailing this short experiment is available here, and the timing code is available here.
How different is the Intel IPP version of RSA key generation algorithm (ippsRSA_GenerateKeys) compared to OpenSSL (RSA_generate_key)? Can we expect improvements in the newer versions of Intel IPP Cryptography libraries ?
