public static KeyPair loadKey(String pemString, String passwd) throws IOException, GeneralSecurityException { Object key = PEMDecoder.decode(pemString.toCharArray(), passwd); if (key instanceof com.trilead.ssh2.signature.RSAPrivateKey) { com.trilead.ssh2.signature.RSAPrivateKey x = (com.trilead.ssh2.signature.RSAPrivateKey)key; return x.toJCEKeyPair(); } if (key instanceof com.trilead.ssh2.signature.DSAPrivateKey) { com.trilead.ssh2.signature.DSAPrivateKey x = (com.trilead.ssh2.signature.DSAPrivateKey)key; KeyFactory kf = KeyFactory.getInstance("DSA"); return new KeyPair( kf.generatePublic(new DSAPublicKeySpec(x.getY(), x.getP(), x.getQ(), x.getG())), kf.generatePrivate(new DSAPrivateKeySpec(x.getX(), x.getP(), x.getQ(), x.getG()))); } throw new UnsupportedOperationException("Unrecognizable key format: " + key); }
/** Creates a DSA public key. */ public static PublicKey newDSAPublicKey(String y, String p, String q, String g) throws GeneralSecurityException { return SecurityUtils.getKeyFactory("DSA").generatePublic(new DSAPublicKeySpec(new BigInteger(y, 16), new BigInteger(p, 16), new BigInteger(q, 16), new BigInteger(g, 16)) ); }
@Override public PublicKey readPubKeyFromBuffer(Buffer<?> buf) throws GeneralSecurityException { BigInteger p, q, g, y; try { p = buf.readMPInt(); q = buf.readMPInt(); g = buf.readMPInt(); y = buf.readMPInt(); } catch (Buffer.BufferException be) { throw new GeneralSecurityException(be); } final KeyFactory keyFactory = SecurityUtils.getKeyFactory("DSA"); return keyFactory.generatePublic(new DSAPublicKeySpec(y, p, q, g)); }
BigInteger pub = asn.readNext(); BigInteger prv = asn.readNext(); PublicKey pubKey = factory.generatePublic(new DSAPublicKeySpec(pub, p, q, g)); PrivateKey prvKey = factory.generatePrivate(new DSAPrivateKeySpec(prv, p, q, g)); return new KeyPair(pubKey, prvKey);
factory.generatePublic(new DSAPublicKeySpec(y, p, q, g)), factory.generatePrivate(new DSAPrivateKeySpec(x, p, q, g)) );
g = params.getG(); return (T) (new DSAPublicKeySpec(y, p, q, g));
@Test public void testSignAndVerify() throws Exception { BigInteger x = new BigInteger(new byte[] { 58, 19, -71, -30, 89, -111, 75, 98, 110, 38, -56, -23, 68, 74, -40, 17, -30, 37, 50, 35 }); BigInteger y = new BigInteger(new byte[] { 32, -91, -39, 54, 19, 14, 26, 113, -109, -92, -45, 83, -86, 23, -103, 108, 102, 86, 110, 78, -45, -41, -37, 38, -94, -92, -124, -36, -93, 92, 127, 113, 97, -119, -10, -73, -41, -45, 98, -104, -54, -9, -92, 66, 15, 31, 68, -32, 32, -121, -51, 68, 29, 100, 59, 60, 109, 111, -81, 80, 7, 127, 116, -107, 88, -114, -114, -69, 41, -15, 59, 81, 70, 9, -113, 36, 119, 28, 16, -127, -65, 32, -19, 109, -27, 24, -48, -80, 84, 47, 119, 25, 57, -118, -66, -22, -105, -11, 112, 16, -91, -127, 62, 23, 89, -17, -43, -105, -4, -43, 60, 42, -81, -95, -27, -8, 98, -37, 120, 80, -76, 93, -24, -104, -117, 38, -56, -68 }); BigInteger p = new BigInteger(new byte[] { 0, -3, 127, 83, -127, 29, 117, 18, 41, 82, -33, 74, -100, 46, -20, -28, -25, -10, 17, -73, 82, 60, -17, 68, 0, -61, 30, 63, -128, -74, 81, 38, 105, 69, 93, 64, 34, 81, -5, 89, 61, -115, 88, -6, -65, -59, -11, -70, 48, -10, -53, -101, 85, 108, -41, -127, 59, -128, 29, 52, 111, -14, 102, 96, -73, 107, -103, 80, -91, -92, -97, -97, -24, 4, 123, 16, 34, -62, 79, -69, -87, -41, -2, -73, -58, 27, -8, 59, 87, -25, -58, -88, -90, 21, 15, 4, -5, -125, -10, -45, -59, 30, -61, 2, 53, 84, 19, 90, 22, -111, 50, -10, 117, -13, -82, 43, 97, -41, 42, -17, -14, 34, 3, 25, -99, -47, 72, 1, -57 }); BigInteger q = new BigInteger(new byte[] { 0, -105, 96, 80, -113, 21, 35, 11, -52, -78, -110, -71, -126, -94, -21, -124, 11, -16, 88, 28, -11 }); BigInteger g = new BigInteger(new byte[] { 0, -9, -31, -96, -123, -42, -101, 61, -34, -53, -68, -85, 92, 54, -72, 87, -71, 121, -108, -81, -69, -6, 58, -22, -126, -7, 87, 76, 11, 61, 7, -126, 103, 81, 89, 87, -114, -70, -44, 89, 79, -26, 113, 7, 16, -127, -128, -76, 73, 22, 113, 35, -24, 76, 40, 22, 19, -73, -49, 9, 50, -116, -56, -90, -31, 60, 22, 122, -117, 84, 124, -115, 40, -32, -93, -82, 30, 43, -77, -90, 117, -111, 110, -93, 127, 11, -6, 33, 53, 98, -15, -5, 98, 122, 1, 36, 59, -52, -92, -15, -66, -88, 81, -112, -119, -88, -125, -33, -31, 90, -27, -97, 6, -110, -117, 102, 94, -128, 123, 85, 37, 100, 1, 76, 59, -2, -49, 73, 42 }); byte[] data = "The Magic Words are Squeamish Ossifrage".getBytes(IOUtils.UTF8); // A previously signed and verified signature using the data and DSA key parameters above. byte[] dataSig = new byte[] { 0, 0, 0, 7, 115, 115, 104, 45, 100, 115, 115, 0, 0, 0, 40, 40, -71, 33, 105, -89, -107, 8, 26, -13, -90, 73, -103, 105, 112, 7, -59, -66, 46, 85, -27, 20, 82, 22, -113, -75, -86, -121, -42, -73, 78, 66, 93, -34, 39, -50, -93, 27, -5, 37, -92 }; SignatureDSA signatureForSigning = new SignatureDSA(); signatureForSigning.initSign(keyFactory.generatePrivate(new DSAPrivateKeySpec(x, p, q, g))); signatureForSigning.update(data); byte[] sigBlob = signatureForSigning.encode(signatureForSigning.sign()); byte[] sigFull = new Buffer.PlainBuffer().putString("ssh-dss").putBytes(sigBlob).getCompactData(); SignatureDSA signatureForVerifying = new SignatureDSA(); signatureForVerifying.initVerify(keyFactory.generatePublic(new DSAPublicKeySpec(y, p, q, g))); signatureForVerifying.update(data); Assert.assertTrue("Failed to verify signature: " + Arrays.toString(sigFull), signatureForVerifying.verify(sigFull)); signatureForVerifying.update(data); Assert.assertTrue("Failed to verify signature: " + Arrays.toString(dataSig), signatureForVerifying.verify(dataSig)); }
return engineGeneratePublic(new DSAPublicKeySpec(publicKey .getY(), params.getP(), params.getQ(), params .getG()));
public static DSAPublicKey toJavaDSAKey(SigningPublicKey pk) throws GeneralSecurityException { KeyFactory kf = KeyFactory.getInstance("DSA"); // y p q g KeySpec ks = new DSAPublicKeySpec(new NativeBigInteger(1, pk.getData()), CryptoConstants.dsap, CryptoConstants.dsaq, CryptoConstants.dsag); return (DSAPublicKey) kf.generatePublic(ks); }
BigInteger g = decodeBigInt(); BigInteger y = decodeBigInt(); DSAPublicKeySpec spec = new DSAPublicKeySpec(y, p, q, g); return KeyFactory.getInstance("DSA").generatePublic(spec); } else {
protected static PublicKey createPubKeyDsa( BigInteger y, BigInteger p, BigInteger q, BigInteger g) throws NoSuchAlgorithmException, InvalidKeySpecException { DSAPublicKeySpec keySpec = new DSAPublicKeySpec(y, p, q, g); KeyFactory kf = KeyFactory.getInstance("DSA"); return kf.generatePublic(keySpec); }
public void setPubKey(byte[] y, byte[] p, byte[] q, byte[] g) throws Exception{ DSAPublicKeySpec dsaPubKeySpec = new DSAPublicKeySpec(new BigInteger(y), new BigInteger(p), new BigInteger(q), new BigInteger(g)); PublicKey pubKey=keyFactory.generatePublic(dsaPubKeySpec); signature.initVerify(pubKey); } public void setPrvKey(byte[] x, byte[] p, byte[] q, byte[] g) throws Exception{
public Ssh2DsaPublicKey(BigInteger p, BigInteger q, BigInteger g, BigInteger y) throws NoSuchAlgorithmException, InvalidKeySpecException { KeyFactory keyFactory = JCEProvider .getProviderForAlgorithm(JCEAlgorithms.JCE_DSA) == null ? KeyFactory .getInstance(JCEAlgorithms.JCE_DSA) : KeyFactory.getInstance( JCEAlgorithms.JCE_DSA, JCEProvider.getProviderForAlgorithm(JCEAlgorithms.JCE_DSA)); KeySpec publicKeySpec = new DSAPublicKeySpec(y, p, q, g); pubkey = (DSAPublicKey) keyFactory.generatePublic(publicKeySpec); }
private PublicKey buildPublicKey(DSAKeyValueType dsaKeyValueType) throws InvalidKeySpecException, NoSuchAlgorithmException { DSAPublicKeySpec dsaPublicKeySpec = new DSAPublicKeySpec( new BigInteger(1, dsaKeyValueType.getY()), new BigInteger(1, dsaKeyValueType.getP()), new BigInteger(1, dsaKeyValueType.getQ()), new BigInteger(1, dsaKeyValueType.getG())); KeyFactory keyFactory = KeyFactory.getInstance("DSA"); return keyFactory.generatePublic(dsaPublicKeySpec); }
private DSAPublicKey decodeDsaPublicKeyFromBitString(DERBitString der, BigInteger p, BigInteger q, BigInteger g) throws SpkacException { try { BigInteger y = ASN1Integer.getInstance(der.getBytes()).getValue(); KeyFactory keyFact = KeyFactory.getInstance("DSA"); return (DSAPublicKey) keyFact.generatePublic(new DSAPublicKeySpec(y, p, q, g)); } catch (GeneralSecurityException ex) { throw new SpkacException(res.getString("NoGenerateDsaPublicKeyFromSpkac.exception.message"), ex); } catch (Exception ex) { throw new SpkacException(res.getString("NoGenerateDsaPublicKeyFromSpkac.exception.message"), ex); } }
@Override public DSAPublicKey decodePublicKey(String keyType, InputStream keyData) throws IOException, GeneralSecurityException { if (!KeyPairProvider.SSH_DSS.equals(keyType)) { // just in case we were invoked directly throw new InvalidKeySpecException("Unexpected key type: " + keyType); } BigInteger p = KeyEntryResolver.decodeBigInt(keyData); BigInteger q = KeyEntryResolver.decodeBigInt(keyData); BigInteger g = KeyEntryResolver.decodeBigInt(keyData); BigInteger y = KeyEntryResolver.decodeBigInt(keyData); return generatePublicKey(new DSAPublicKeySpec(y, p, q, g)); }
@Override public DSAPublicKey decodePublicKey(String keyType, InputStream keyData) throws IOException, GeneralSecurityException { if (!KeyPairProvider.SSH_DSS.equals(keyType)) { // just in case we were invoked directly throw new InvalidKeySpecException("Unexpected key type: " + keyType); } BigInteger p = KeyEntryResolver.decodeBigInt(keyData); BigInteger q = KeyEntryResolver.decodeBigInt(keyData); BigInteger g = KeyEntryResolver.decodeBigInt(keyData); BigInteger y = KeyEntryResolver.decodeBigInt(keyData); return generatePublicKey(new DSAPublicKeySpec(y, p, q, g)); }
public static DSAPublicKey recoverDSAPublicKey(DSAPrivateKey privateKey) throws GeneralSecurityException { DSAParams keyParams = privateKey.getParams(); BigInteger p = keyParams.getP(); BigInteger x = privateKey.getX(); BigInteger q = keyParams.getQ(); BigInteger g = keyParams.getG(); BigInteger y = g.modPow(x, p); KeyFactory kf = SecurityUtils.getKeyFactory(DSS_ALGORITHM); return (DSAPublicKey) kf.generatePublic(new DSAPublicKeySpec(y, p, q, g)); }
@Override public DSAPublicKey clonePublicKey(DSAPublicKey key) throws GeneralSecurityException { if (key == null) { return null; } DSAParams params = key.getParams(); if (params == null) { throw new InvalidKeyException("Missing parameters in key"); } return generatePublicKey(new DSAPublicKeySpec(key.getY(), params.getP(), params.getQ(), params.getG())); }
@Override public DSAPublicKey getRawPublicKey(String keyType, Buffer buffer) throws GeneralSecurityException { ValidateUtils.checkTrue(isKeyTypeSupported(keyType), "Unsupported key type: %s", keyType); BigInteger p = buffer.getMPInt(); BigInteger q = buffer.getMPInt(); BigInteger g = buffer.getMPInt(); BigInteger y = buffer.getMPInt(); return generatePublicKey(KeyUtils.DSS_ALGORITHM, new DSAPublicKeySpec(y, p, q, g)); } }