Attachment 712228 Details for Bug 1022638

TestECDSA.java

TestECDSA.java (text/plain), 1.74 KB, created by Andreas Schneider on 2017-01-31 10:10:27 UTC

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Creator: Andreas Schneider

Created: 2017-01-31 10:10:27 UTC

Size: 1.74 KB

patch

obsolete

>/* TestECDSA -- Ensure ECDSA signatures are working.
>   Copyright (C) 2016 Red Hat, Inc.
>
>This program is free software: you can redistribute it and/or modify
>it under the terms of the GNU Affero General Public License as
>published by the Free Software Foundation, either version 3 of the
>License, or (at your option) any later version.
>
>This program is distributed in the hope that it will be useful,
>but WITHOUT ANY WARRANTY; without even the implied warranty of
>MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>GNU Affero General Public License for more details.
>
>You should have received a copy of the GNU Affero General Public License
>along with this program.  If not, see <http://www.gnu.org/licenses/>.
>*/
>
>import java.math.BigInteger;
>import java.security.KeyPair;
>import java.security.KeyPairGenerator;
>import java.security.Signature;
>
>/**
> * @test
> */
>public class TestECDSA {
>
>    public static void main(String[] args) throws Exception {
>        KeyPairGenerator keyGen = KeyPairGenerator.getInstance("EC");
>        KeyPair key = keyGen.generateKeyPair();
>        
>        byte[] data = "This is a string to sign".getBytes("UTF-8");
>        
>        Signature dsa = Signature.getInstance("NONEwithECDSA");
>        dsa.initSign(key.getPrivate());
>        dsa.update(data);
>        byte[] sig = dsa.sign();
>        System.out.println("Signature: " + new BigInteger(1, sig).toString(16));
>        
>        Signature dsaCheck = Signature.getInstance("NONEwithECDSA");
>        dsaCheck.initVerify(key.getPublic());
>        dsaCheck.update(data);
>        boolean success = dsaCheck.verify(sig);
>        if (!success) {
>            throw new RuntimeException("Test failed. Signature verification error");
>        }
>        System.out.println("Test passed.");
>    }
>}

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