RSA algorithm library for Java [closed]

Answer 1

Just use the javax.crypto and java.security packages. It's in the Java standard platform.

KeyPair keys = KeyPairGenerator.getInstance("RSA").generateKeyPair();
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, keys.getPublic());
byte[] encrypted = cipher.doFinal(rawData);

Links for the official documentation:

• Package javax.crypto documentation
• Package java.security documentation

Answer 2

I recently used the open source framework Jasypt http://www.jasypt.org/index.html. This framework also work very well together with Spring and Hibernate

Answer 3

If for some reason you don't want to use what is build into the platform, then Keyczar is generally the most suggested / best solution for any other sort of cryptographic needs.

Answer 4

Yes, check out BouncyCastle.