/
dsa.txt
executable file
·38 lines (29 loc) · 1.17 KB
/
dsa.txt
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byte[] data = "hello.".getBytes();
/* Test generating and verifying a DSA signature */
try {
/* generate a key pair */
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA");
keyGen.initialize(1024, new SecureRandom());
KeyPair pair = keyGen.generateKeyPair();
/* create a Signature object to use
* for signing and verifying */
Signature dsa = Signature.getInstance("SHA/DSA");
/* initialize the Signature object for signing */
PrivateKey priv = pair.getPrivate();
dsa.initSign(priv);
/* Update and sign the data */
dsa.update(data);
/* Now that all the data to be signed
* has been read in, sign it */
byte[] sig = dsa.sign();
/* Verify the signature */
/* Initialize the Signature object for verification */
PublicKey pub = pair.getPublic();
dsa.initVerify(pub);
/* Update and verify the data */
dsa.update(data);
boolean verifies = dsa.verify(sig);
Assert.assertTrue(verifies);
} catch (Exception e) {
System.err.println("Caught exception " + e.toString());
}