import com.didisoft.pgp.*;
 
public class GenerateKeyPairRSA {
 public static void main(String[] args) throws Exception {
  // initialize the KeyStore where the key will be generated
  KeyStore ks = new KeyStore("pgp.keystore", "changeit");
 
  // key primary user Id
  String userId = "demo2@didisoft.com";
 
  // preferred hashing algorithms
  String[] hashingAlgorithms = new String[]
				 {HashAlgorithm.SHA1,
				  HashAlgorithm.SHA256,
				  HashAlgorithm.SHA384,
				  HashAlgorithm.SHA512,
				  HashAlgorithm.MD5};
 
  // preferred compression algorithms
  String[] compressions = new String[]
				{CompressionAlgorithm.ZIP,
				CompressionAlgorithm.ZLIB,
				CompressionAlgorithm.UNCOMPRESSED};
 
  // preferred symmetric key algorithms
  String[] cyphers = new String[]
			 {CypherAlgorithm.CAST5,
			  CypherAlgorithm.AES_128,
			  CypherAlgorithm.AES_192,
			  CypherAlgorithm.AES_256,
			  CypherAlgorithm.TWOFISH};
 
  String privateKeyPassword = "changeit";
 
  int keySizeInBytes = 2048;
  ks.generateKeyPair(keySizeInBytes,
			userId,
			KeyAlgorithm.RSA,
			privateKeyPassword,
			compressions,
			hashingAlgorithms,
			cyphers);
 }
}