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+1 A:

PKCS#1 v2.0 encryption is usually called OAEP encryption. So:

Cipher.getInstance("RSA/ECB/OAEPWithSHA1AndMGF1Padding");

The place to look is the Java Cryptography Architecture documents: Standard Algorithm Name Documentation or Sun Providers Documentation.

As you can see the SunJCE provider supports the following variations of OAEP:

OAEPWITHMD5ANDMGF1PADDING
OAEPWITHSHA1ANDMGF1PADDING
(OAEPWITHSHA-1ANDMGF1PADDING)
OAEPWITHSHA-256ANDMGF1PADDING
OAEPWITHSHA-384ANDMGF1PADDING
OAEPWITHSHA-512ANDMGF1PADDING

Rasmus Faber 2010-06-01 21:20:48

Sun Providers Documentation, yes, Standard Algorithm Name Docs, no. Sun does not promise to implement everything they have reserved a name for. As an example, the "ECIES" algorithm name is reserved, but no Sun provider implements it.

GregS 2010-06-01 22:23:53

The Standard Algorithm Name Documentation helps you find the correct name instead of "PKCS#1V2". The Sun Providers Documentation helps you find out whether the Sun provider implements it or if you should try to find another provider.

Rasmus Faber 2010-06-02 05:12:08

@RasmusFaber Looks like OAEP (Optimal Asymmetric Encryption Padding) it's just the padding definition. Is PKCS1V2 just about padding?

Tom Brito 2010-06-02 14:15:56

GregS 2010-06-02 15:27:34

@Tom Brito: Basically yes.

Rasmus Faber 2010-06-02 17:56:40

I didn't found this names, but found XMLCipher.RSA_OAEP in apache commons, that is the same thing. Anyway, thanks!

Tom Brito 2010-06-11 17:40:11

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Is PKCS#1 V2.0 implemented for Java?

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