| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.harmony.xnet.provider.jsse; |
| |
| import java.security.InvalidKeyException; |
| import java.security.InvalidParameterException; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.PrivateKey; |
| import java.security.PublicKey; |
| import java.security.Signature; |
| import java.security.SignatureException; |
| import java.security.interfaces.DSAParams; |
| import java.security.interfaces.DSAPublicKey; |
| import java.security.interfaces.RSAPublicKey; |
| |
| /** |
| * Implements the JDK MessageDigest interface using OpenSSL's EVP API. |
| */ |
| public class OpenSSLSignature extends Signature { |
| |
| /** |
| * Holds a pointer to the native message digest context. |
| */ |
| private int ctx; |
| |
| /** |
| * Holds a pointer to the native DSA key. |
| */ |
| private int dsa; |
| |
| /** |
| * Holds a pointer to the native RSA key. |
| */ |
| private int rsa; |
| |
| /** |
| * Holds the OpenSSL name of the algorithm (lower case, no dashes). |
| */ |
| private String evpAlgorithm; |
| |
| /** |
| * Holds a dummy buffer for writing single bytes to the digest. |
| */ |
| private byte[] singleByte = new byte[1]; |
| |
| /** |
| * Creates a new OpenSSLSignature instance for the given algorithm name. |
| * |
| * @param algorithm The name of the algorithm, e.g. "SHA1". |
| * |
| * @return The new OpenSSLSignature instance. |
| * |
| * @throws RuntimeException In case of problems. |
| */ |
| public static OpenSSLSignature getInstance(String algorithm) throws NoSuchAlgorithmException { |
| //log("OpenSSLSignature", "getInstance() invoked with " + algorithm); |
| return new OpenSSLSignature(algorithm); |
| } |
| |
| /** |
| * Creates a new OpenSSLSignature instance for the given algorithm name. |
| * |
| * @param algorithm The name of the algorithm, e.g. "SHA1". |
| */ |
| private OpenSSLSignature(String algorithm) throws NoSuchAlgorithmException { |
| super(algorithm); |
| |
| int i = algorithm.indexOf("with"); |
| if (i == -1) { |
| throw new NoSuchAlgorithmException(algorithm); |
| } |
| |
| // We don't support MD2 anymore. This needs to also check for aliases |
| // and OIDs. |
| if ("MD2withRSA".equalsIgnoreCase(algorithm) || |
| "MD2withRSAEncryption".equalsIgnoreCase(algorithm) || |
| "1.2.840.113549.1.1.2".equalsIgnoreCase(algorithm) || |
| "MD2/RSA".equalsIgnoreCase(algorithm)) { |
| throw new NoSuchAlgorithmException("MD2withRSA"); |
| } |
| |
| // For the special combination of DSA and SHA1, we need to pass the |
| // algorithm name as a pair consisting of crypto algorithm and hash |
| // algorithm. For all other (RSA) cases, passing the hash algorithm |
| // alone is not only sufficient, but actually necessary. OpenSSL |
| // doesn't accept something like RSA-SHA1. |
| if ("1.3.14.3.2.26with1.2.840.10040.4.1".equals(algorithm) |
| || "SHA1withDSA".equals(algorithm) |
| || "SHAwithDSA".equals(algorithm)) { |
| evpAlgorithm = "DSA-SHA"; |
| } else { |
| evpAlgorithm = algorithm.substring(0, i).replace("-", "").toUpperCase(); |
| } |
| |
| ctx = NativeCrypto.EVP_new(); |
| } |
| |
| @Override |
| protected void engineUpdate(byte input) { |
| singleByte[0] = input; |
| engineUpdate(singleByte, 0, 1); |
| } |
| |
| @Override |
| protected void engineUpdate(byte[] input, int offset, int len) { |
| if (state == SIGN) { |
| throw new UnsupportedOperationException(); |
| } else { |
| NativeCrypto.EVP_VerifyUpdate(ctx, input, offset, len); |
| } |
| } |
| |
| @Override |
| protected Object engineGetParameter(String param) throws InvalidParameterException { |
| return null; |
| } |
| |
| @Override |
| protected void engineInitSign(PrivateKey privateKey) throws InvalidKeyException { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| protected void engineInitVerify(PublicKey publicKey) throws InvalidKeyException { |
| //log("OpenSSLSignature", "engineInitVerify() invoked with " + publicKey.getClass().getCanonicalName()); |
| |
| if (publicKey instanceof DSAPublicKey) { |
| try { |
| DSAPublicKey dsaPublicKey = (DSAPublicKey)publicKey; |
| DSAParams dsaParams = dsaPublicKey.getParams(); |
| dsa = NativeCrypto.EVP_PKEY_new_DSA(dsaParams.getP().toByteArray(), |
| dsaParams.getQ().toByteArray(), dsaParams.getG().toByteArray(), |
| dsaPublicKey.getY().toByteArray(), null); |
| |
| } catch (Exception ex) { |
| throw new InvalidKeyException(ex.toString()); |
| } |
| } else if (publicKey instanceof RSAPublicKey) { |
| try { |
| RSAPublicKey rsaPublicKey = (RSAPublicKey)publicKey; |
| rsa = NativeCrypto.EVP_PKEY_new_RSA(rsaPublicKey.getModulus().toByteArray(), |
| rsaPublicKey.getPublicExponent().toByteArray(), null, null, null); |
| |
| } catch (Exception ex) { |
| throw new InvalidKeyException(ex.toString()); |
| } |
| } else { |
| throw new InvalidKeyException("Need DSA or RSA public key"); |
| } |
| |
| try { |
| NativeCrypto.EVP_VerifyInit(ctx, evpAlgorithm); |
| } catch (Exception ex) { |
| throw new RuntimeException(ex); |
| } |
| } |
| |
| @Override |
| protected void engineSetParameter(String param, Object value) throws InvalidParameterException { |
| } |
| |
| @Override |
| protected byte[] engineSign() throws SignatureException { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| protected boolean engineVerify(byte[] sigBytes) throws SignatureException { |
| int handle = (rsa != 0) ? rsa : dsa; |
| |
| if (handle == 0) { |
| // This can't actually happen, but you never know... |
| throw new SignatureException("Need DSA or RSA public key"); |
| } |
| |
| try { |
| int result = NativeCrypto.EVP_VerifyFinal(ctx, sigBytes, 0, sigBytes.length, handle); |
| return result == 1; |
| } catch (Exception ex) { |
| throw new SignatureException(ex); |
| } |
| |
| } |
| |
| @Override |
| protected void finalize() throws Throwable { |
| super.finalize(); |
| |
| if (dsa != 0) { |
| NativeCrypto.EVP_PKEY_free(dsa); |
| } |
| |
| if (rsa != 0) { |
| NativeCrypto.EVP_PKEY_free(rsa); |
| } |
| |
| if (ctx != 0) { |
| NativeCrypto.EVP_free(ctx); |
| } |
| } |
| } |