JCE: Implements RSA key gen benchmark

[jackctj117]

Added RSA key gen for WolfJCE and BC benchmarks.

[cconlon]

Please see comments. Let's also add SunJCE RSA benchmarks as part of this PR.

[cconlon]

Is there a reason we are not benchmarking SunJCE "RSA/ECB/PKCS1Padding"?

[jackctj117]

When I look online it look like SunJCE does not have completed RSA implementation. Since JDK 5 the RSA implementation is split between different providers where SunRSASign does key pair generation and SunJCE handles RSA encryption/decryption. When lines 410 and 419 are commented out lines (which is an if statement that excludes SunJSE from the RSA test) I get the following:

java.security.NoSuchAlgorithmException: no such algorithm: RSA for provider SunJCE
	at sun.security.jca.GetInstance.getService(GetInstance.java:87)
	at sun.security.jca.GetInstance.getInstance(GetInstance.java:206)
	at java.security.KeyPairGenerator.getInstance(KeyPairGenerator.java:279)
	at CryptoBenchmark.runRSABenchmark(Unknown Source)
	at CryptoBenchmark.main(Unknown Source)

[cconlon]

You are correct that Sun/Oracle RSA support is split between different providers depending on the operation.

The SunJCE provider does have support for RSA/ECB/PKCS1Padding. But, you will need to use the SunRsaSign provider for KeyPairGenerator("RSA") support, ie:

keyGen = KeyPairGenerator.getInstance("RSA", "SunRsaSign");

That's ok for us to do here. SunJCE will probably never have KeyPairGenerator support for RSA, since it will likely always be in SunRsaSign. As such, we should group SunJCE/SunRsaSign together as one group when we are testing the "Sun / Java" provider. Go ahead and use SunRsaSign for the KeyPairGenerator part and SunJCE for the other RSA operation benchmarks. Then, in your output we should probably list the SunJCE section like:

SunJCE / SunRsaSign:
RSA 2048 key gen (RSA/ECB/PKCS1Padding)                 12 ops took 1.061 sec, avg 88.424 ms, 11.309 ops/sec
RSA 2048 public (RSA/ECB/PKCS1Padding)              22031 ops took 1.000 sec, avg 0.045 ms, 22030.882 ops/sec

And in the comparison table, call out SunRsaSign for the RSA key gen op, ie:

| RSA/ECB/PKCS1Padding RSA 2048 key gen    | SunRsaSign   |    -2.36 |    -20.9 |