| package org.bouncycastle.jcajce.provider.asymmetric.ec; |
| |
| import java.io.IOException; |
| import java.math.BigInteger; |
| import java.security.InvalidKeyException; |
| import java.security.PrivateKey; |
| import java.security.PublicKey; |
| |
| import org.bouncycastle.asn1.ASN1EncodableVector; |
| import org.bouncycastle.asn1.ASN1Encoding; |
| import org.bouncycastle.asn1.ASN1Integer; |
| import org.bouncycastle.asn1.ASN1Primitive; |
| import org.bouncycastle.asn1.ASN1Sequence; |
| import org.bouncycastle.asn1.DERSequence; |
| import org.bouncycastle.crypto.CipherParameters; |
| import org.bouncycastle.crypto.DSA; |
| import org.bouncycastle.crypto.Digest; |
| import org.bouncycastle.crypto.digests.NullDigest; |
| // BEGIN android-added |
| import org.bouncycastle.crypto.digests.AndroidDigestFactory; |
| // END android-added |
| // BEGIN android-removed |
| // import org.bouncycastle.crypto.digests.RIPEMD160Digest; |
| // import org.bouncycastle.crypto.digests.SHA1Digest; |
| // import org.bouncycastle.crypto.digests.SHA224Digest; |
| // import org.bouncycastle.crypto.digests.SHA256Digest; |
| // import org.bouncycastle.crypto.digests.SHA384Digest; |
| // import org.bouncycastle.crypto.digests.SHA512Digest; |
| // END android-removed |
| import org.bouncycastle.crypto.params.ParametersWithRandom; |
| import org.bouncycastle.crypto.signers.ECDSASigner; |
| // BEGIN android-removed |
| // import org.bouncycastle.crypto.signers.ECNRSigner; |
| // import org.bouncycastle.crypto.signers.HMacDSAKCalculator; |
| // END android-removed |
| import org.bouncycastle.jcajce.provider.asymmetric.util.DSABase; |
| import org.bouncycastle.jcajce.provider.asymmetric.util.DSAEncoder; |
| import org.bouncycastle.jcajce.provider.asymmetric.util.ECUtil; |
| |
| public class SignatureSpi |
| extends DSABase |
| { |
| SignatureSpi(Digest digest, DSA signer, DSAEncoder encoder) |
| { |
| super(digest, signer, encoder); |
| } |
| |
| protected void engineInitVerify(PublicKey publicKey) |
| throws InvalidKeyException |
| { |
| CipherParameters param = ECUtil.generatePublicKeyParameter(publicKey); |
| |
| digest.reset(); |
| signer.init(false, param); |
| } |
| |
| protected void engineInitSign( |
| PrivateKey privateKey) |
| throws InvalidKeyException |
| { |
| CipherParameters param = ECUtil.generatePrivateKeyParameter(privateKey); |
| |
| digest.reset(); |
| |
| if (appRandom != null) |
| { |
| signer.init(true, new ParametersWithRandom(param, appRandom)); |
| } |
| else |
| { |
| signer.init(true, param); |
| } |
| } |
| |
| static public class ecDSA |
| extends SignatureSpi |
| { |
| public ecDSA() |
| { |
| // BEGIN android-changed |
| super(AndroidDigestFactory.getSHA1(), new ECDSASigner(), new StdDSAEncoder()); |
| // END android-changed |
| } |
| } |
| |
| // BEGIN android-removed |
| // static public class ecDetDSA |
| // extends SignatureSpi |
| // { |
| // public ecDetDSA() |
| // { |
| // super(new SHA1Digest(), new ECDSASigner(new HMacDSAKCalculator(new SHA1Digest())), new StdDSAEncoder()); |
| // } |
| // } |
| // END android-removed |
| |
| static public class ecDSAnone |
| extends SignatureSpi |
| { |
| public ecDSAnone() |
| { |
| super(new NullDigest(), new ECDSASigner(), new StdDSAEncoder()); |
| } |
| } |
| |
| static public class ecDSA224 |
| extends SignatureSpi |
| { |
| public ecDSA224() |
| { |
| // BEGIN android-changed |
| super(AndroidDigestFactory.getSHA224(), new ECDSASigner(), new StdDSAEncoder()); |
| // END android-changed |
| } |
| } |
| |
| // BEGIN android-removed |
| // static public class ecDetDSA224 |
| // extends SignatureSpi |
| // { |
| // public ecDetDSA224() |
| // { |
| // super(new SHA224Digest(), new ECDSASigner(new HMacDSAKCalculator(new SHA224Digest())), new StdDSAEncoder()); |
| // } |
| // } |
| // END android-removed |
| |
| static public class ecDSA256 |
| extends SignatureSpi |
| { |
| public ecDSA256() |
| { |
| // BEGIN android-changed |
| super(AndroidDigestFactory.getSHA256(), new ECDSASigner(), new StdDSAEncoder()); |
| // END android-changed |
| } |
| } |
| |
| // BEGIN android-removed |
| // static public class ecDetDSA256 |
| // extends SignatureSpi |
| // { |
| // public ecDetDSA256() |
| // { |
| // super(new SHA256Digest(), new ECDSASigner(new HMacDSAKCalculator(new SHA256Digest())), new StdDSAEncoder()); |
| // } |
| // } |
| // END android-removed |
| |
| static public class ecDSA384 |
| extends SignatureSpi |
| { |
| public ecDSA384() |
| { |
| // BEGIN android-changed |
| super(AndroidDigestFactory.getSHA384(), new ECDSASigner(), new StdDSAEncoder()); |
| // END android-changed |
| } |
| } |
| |
| // BEGIN android-removed |
| // static public class ecDetDSA384 |
| // extends SignatureSpi |
| // { |
| // public ecDetDSA384() |
| // { |
| // super(new SHA384Digest(), new ECDSASigner(new HMacDSAKCalculator(new SHA384Digest())), new StdDSAEncoder()); |
| // } |
| // } |
| // END android-removed |
| |
| static public class ecDSA512 |
| extends SignatureSpi |
| { |
| public ecDSA512() |
| { |
| // BEGIN android-changed |
| super(AndroidDigestFactory.getSHA512(), new ECDSASigner(), new StdDSAEncoder()); |
| // END android-changed |
| } |
| } |
| |
| // BEGIN android-removed |
| // static public class ecDetDSA512 |
| // extends SignatureSpi |
| // { |
| // public ecDetDSA512() |
| // { |
| // super(new SHA512Digest(), new ECDSASigner(new HMacDSAKCalculator(new SHA512Digest())), new StdDSAEncoder()); |
| // } |
| // } |
| // |
| // static public class ecDSARipeMD160 |
| // extends SignatureSpi |
| // { |
| // public ecDSARipeMD160() |
| // { |
| // super(new RIPEMD160Digest(), new ECDSASigner(), new StdDSAEncoder()); |
| // } |
| // } |
| // |
| // static public class ecNR |
| // extends SignatureSpi |
| // { |
| // public ecNR() |
| // { |
| // super(new SHA1Digest(), new ECNRSigner(), new StdDSAEncoder()); |
| // } |
| // } |
| // |
| // static public class ecNR224 |
| // extends SignatureSpi |
| // { |
| // public ecNR224() |
| // { |
| // super(new SHA224Digest(), new ECNRSigner(), new StdDSAEncoder()); |
| // } |
| // } |
| // |
| // static public class ecNR256 |
| // extends SignatureSpi |
| // { |
| // public ecNR256() |
| // { |
| // super(new SHA256Digest(), new ECNRSigner(), new StdDSAEncoder()); |
| // } |
| // } |
| // |
| // static public class ecNR384 |
| // extends SignatureSpi |
| // { |
| // public ecNR384() |
| // { |
| // super(new SHA384Digest(), new ECNRSigner(), new StdDSAEncoder()); |
| // } |
| // } |
| // |
| // static public class ecNR512 |
| // extends SignatureSpi |
| // { |
| // public ecNR512() |
| // { |
| // super(new SHA512Digest(), new ECNRSigner(), new StdDSAEncoder()); |
| // } |
| // } |
| // |
| // static public class ecCVCDSA |
| // extends SignatureSpi |
| // { |
| // public ecCVCDSA() |
| // { |
| // super(new SHA1Digest(), new ECDSASigner(), new PlainDSAEncoder()); |
| // } |
| // } |
| // |
| // static public class ecCVCDSA224 |
| // extends SignatureSpi |
| // { |
| // public ecCVCDSA224() |
| // { |
| // super(new SHA224Digest(), new ECDSASigner(), new PlainDSAEncoder()); |
| // } |
| // } |
| // |
| // static public class ecCVCDSA256 |
| // extends SignatureSpi |
| // { |
| // public ecCVCDSA256() |
| // { |
| // super(new SHA256Digest(), new ECDSASigner(), new PlainDSAEncoder()); |
| // } |
| // } |
| // |
| // static public class ecCVCDSA384 |
| // extends SignatureSpi |
| // { |
| // public ecCVCDSA384() |
| // { |
| // super(new SHA384Digest(), new ECDSASigner(), new PlainDSAEncoder()); |
| // } |
| // } |
| // |
| // static public class ecCVCDSA512 |
| // extends SignatureSpi |
| // { |
| // public ecCVCDSA512() |
| // { |
| // super(new SHA512Digest(), new ECDSASigner(), new PlainDSAEncoder()); |
| // } |
| // } |
| // |
| // static public class ecPlainDSARP160 |
| // extends SignatureSpi |
| // { |
| // public ecPlainDSARP160() |
| // { |
| // super(new RIPEMD160Digest(), new ECDSASigner(), new PlainDSAEncoder()); |
| // } |
| // } |
| // END android-removed |
| |
| private static class StdDSAEncoder |
| implements DSAEncoder |
| { |
| public byte[] encode( |
| BigInteger r, |
| BigInteger s) |
| throws IOException |
| { |
| ASN1EncodableVector v = new ASN1EncodableVector(); |
| |
| v.add(new ASN1Integer(r)); |
| v.add(new ASN1Integer(s)); |
| |
| return new DERSequence(v).getEncoded(ASN1Encoding.DER); |
| } |
| |
| public BigInteger[] decode( |
| byte[] encoding) |
| throws IOException |
| { |
| ASN1Sequence s = (ASN1Sequence)ASN1Primitive.fromByteArray(encoding); |
| BigInteger[] sig = new BigInteger[2]; |
| |
| sig[0] = ASN1Integer.getInstance(s.getObjectAt(0)).getValue(); |
| sig[1] = ASN1Integer.getInstance(s.getObjectAt(1)).getValue(); |
| |
| return sig; |
| } |
| } |
| |
| // BEGIN android-removed |
| // private static class PlainDSAEncoder |
| // implements DSAEncoder |
| // { |
| // public byte[] encode( |
| // BigInteger r, |
| // BigInteger s) |
| // throws IOException |
| // { |
| // byte[] first = makeUnsigned(r); |
| // byte[] second = makeUnsigned(s); |
| // byte[] res; |
| // |
| // if (first.length > second.length) |
| // { |
| // res = new byte[first.length * 2]; |
| // } |
| // else |
| // { |
| // res = new byte[second.length * 2]; |
| // } |
| // |
| // System.arraycopy(first, 0, res, res.length / 2 - first.length, first.length); |
| // System.arraycopy(second, 0, res, res.length - second.length, second.length); |
| // |
| // return res; |
| // } |
| // |
| // |
| // private byte[] makeUnsigned(BigInteger val) |
| // { |
| // byte[] res = val.toByteArray(); |
| // |
| // if (res[0] == 0) |
| // { |
| // byte[] tmp = new byte[res.length - 1]; |
| // |
| // System.arraycopy(res, 1, tmp, 0, tmp.length); |
| // |
| // return tmp; |
| // } |
| // |
| // return res; |
| // } |
| // |
| // public BigInteger[] decode( |
| // byte[] encoding) |
| // throws IOException |
| // { |
| // BigInteger[] sig = new BigInteger[2]; |
| // |
| // byte[] first = new byte[encoding.length / 2]; |
| // byte[] second = new byte[encoding.length / 2]; |
| // |
| // System.arraycopy(encoding, 0, first, 0, first.length); |
| // System.arraycopy(encoding, first.length, second, 0, second.length); |
| // |
| // sig[0] = new BigInteger(1, first); |
| // sig[1] = new BigInteger(1, second); |
| // |
| // return sig; |
| // } |
| // } |
| // END android-removed |
| } |
