diff options
author | Roberto Tyley <roberto.tyley@gmail.com> | 2014-07-15 01:38:01 +0400 |
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committer | Roberto Tyley <roberto.tyley@gmail.com> | 2014-07-26 11:23:17 +0400 |
commit | 7cb752aaf746dc0b473afeb9e892b7fbc12666c5 (patch) | |
tree | cc4f91ddc18332b5adbe82e3fcb040d976c90105 /prov/src/main/java/org/spongycastle/jce/provider/JCEECPublicKey.java | |
parent | 551830f8ea5177042af2c7dd1fc90888bc67387d (diff) |
Execute become-spongy.sh
https://github.com/rtyley/spongycastle/blob/3040af/become-spongy.sh
Diffstat (limited to 'prov/src/main/java/org/spongycastle/jce/provider/JCEECPublicKey.java')
-rw-r--r-- | prov/src/main/java/org/spongycastle/jce/provider/JCEECPublicKey.java | 520 |
1 files changed, 520 insertions, 0 deletions
diff --git a/prov/src/main/java/org/spongycastle/jce/provider/JCEECPublicKey.java b/prov/src/main/java/org/spongycastle/jce/provider/JCEECPublicKey.java new file mode 100644 index 00000000..7f550e05 --- /dev/null +++ b/prov/src/main/java/org/spongycastle/jce/provider/JCEECPublicKey.java @@ -0,0 +1,520 @@ +package org.spongycastle.jce.provider; + +import java.io.IOException; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.math.BigInteger; +import java.security.interfaces.ECPublicKey; +import java.security.spec.ECParameterSpec; +import java.security.spec.ECPoint; +import java.security.spec.ECPublicKeySpec; +import java.security.spec.EllipticCurve; + +import org.spongycastle.asn1.ASN1Encodable; +import org.spongycastle.asn1.ASN1ObjectIdentifier; +import org.spongycastle.asn1.ASN1OctetString; +import org.spongycastle.asn1.ASN1Primitive; +import org.spongycastle.asn1.ASN1Sequence; +import org.spongycastle.asn1.DERBitString; +import org.spongycastle.asn1.DERNull; +import org.spongycastle.asn1.DEROctetString; +import org.spongycastle.asn1.cryptopro.CryptoProObjectIdentifiers; +import org.spongycastle.asn1.cryptopro.ECGOST3410NamedCurves; +import org.spongycastle.asn1.cryptopro.GOST3410PublicKeyAlgParameters; +import org.spongycastle.asn1.x509.AlgorithmIdentifier; +import org.spongycastle.asn1.x509.SubjectPublicKeyInfo; +import org.spongycastle.asn1.x9.X962Parameters; +import org.spongycastle.asn1.x9.X9ECParameters; +import org.spongycastle.asn1.x9.X9ECPoint; +import org.spongycastle.asn1.x9.X9IntegerConverter; +import org.spongycastle.asn1.x9.X9ObjectIdentifiers; +import org.spongycastle.crypto.params.ECDomainParameters; +import org.spongycastle.crypto.params.ECPublicKeyParameters; +import org.spongycastle.jcajce.provider.asymmetric.util.EC5Util; +import org.spongycastle.jcajce.provider.asymmetric.util.ECUtil; +import org.spongycastle.jcajce.provider.asymmetric.util.KeyUtil; +import org.spongycastle.jce.ECGOST3410NamedCurveTable; +import org.spongycastle.jce.interfaces.ECPointEncoder; +import org.spongycastle.jce.spec.ECNamedCurveParameterSpec; +import org.spongycastle.jce.spec.ECNamedCurveSpec; +import org.spongycastle.math.ec.ECCurve; +import org.spongycastle.math.ec.custom.sec.SecP256K1Point; +import org.spongycastle.math.ec.custom.sec.SecP256R1Point; + +public class JCEECPublicKey + implements ECPublicKey, org.spongycastle.jce.interfaces.ECPublicKey, ECPointEncoder +{ + private String algorithm = "EC"; + private org.spongycastle.math.ec.ECPoint q; + private ECParameterSpec ecSpec; + private boolean withCompression; + private GOST3410PublicKeyAlgParameters gostParams; + + public JCEECPublicKey( + String algorithm, + JCEECPublicKey key) + { + this.algorithm = algorithm; + this.q = key.q; + this.ecSpec = key.ecSpec; + this.withCompression = key.withCompression; + this.gostParams = key.gostParams; + } + + public JCEECPublicKey( + String algorithm, + ECPublicKeySpec spec) + { + this.algorithm = algorithm; + this.ecSpec = spec.getParams(); + this.q = EC5Util.convertPoint(ecSpec, spec.getW(), false); + } + + public JCEECPublicKey( + String algorithm, + org.spongycastle.jce.spec.ECPublicKeySpec spec) + { + this.algorithm = algorithm; + this.q = spec.getQ(); + + if (spec.getParams() != null) // can be null if implictlyCa + { + ECCurve curve = spec.getParams().getCurve(); + EllipticCurve ellipticCurve = EC5Util.convertCurve(curve, spec.getParams().getSeed()); + + this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec.getParams()); + } + else + { + if (q.getCurve() == null) + { + org.spongycastle.jce.spec.ECParameterSpec s = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa(); + + q = s.getCurve().createPoint(q.getAffineXCoord().toBigInteger(), q.getAffineYCoord().toBigInteger(), false); + } + this.ecSpec = null; + } + } + + public JCEECPublicKey( + String algorithm, + ECPublicKeyParameters params, + ECParameterSpec spec) + { + ECDomainParameters dp = params.getParameters(); + + this.algorithm = algorithm; + this.q = params.getQ(); + + if (spec == null) + { + EllipticCurve ellipticCurve = EC5Util.convertCurve(dp.getCurve(), dp.getSeed()); + + this.ecSpec = createSpec(ellipticCurve, dp); + } + else + { + this.ecSpec = spec; + } + } + + public JCEECPublicKey( + String algorithm, + ECPublicKeyParameters params, + org.spongycastle.jce.spec.ECParameterSpec spec) + { + ECDomainParameters dp = params.getParameters(); + + this.algorithm = algorithm; + this.q = params.getQ(); + + if (spec == null) + { + EllipticCurve ellipticCurve = EC5Util.convertCurve(dp.getCurve(), dp.getSeed()); + + this.ecSpec = createSpec(ellipticCurve, dp); + } + else + { + EllipticCurve ellipticCurve = EC5Util.convertCurve(spec.getCurve(), spec.getSeed()); + + this.ecSpec = EC5Util.convertSpec(ellipticCurve, spec); + } + } + + /* + * called for implicitCA + */ + public JCEECPublicKey( + String algorithm, + ECPublicKeyParameters params) + { + this.algorithm = algorithm; + this.q = params.getQ(); + this.ecSpec = null; + } + + private ECParameterSpec createSpec(EllipticCurve ellipticCurve, ECDomainParameters dp) + { + return new ECParameterSpec( + ellipticCurve, + new ECPoint( + dp.getG().getAffineXCoord().toBigInteger(), + dp.getG().getAffineYCoord().toBigInteger()), + dp.getN(), + dp.getH().intValue()); + } + + public JCEECPublicKey( + ECPublicKey key) + { + this.algorithm = key.getAlgorithm(); + this.ecSpec = key.getParams(); + this.q = EC5Util.convertPoint(this.ecSpec, key.getW(), false); + } + + JCEECPublicKey( + SubjectPublicKeyInfo info) + { + populateFromPubKeyInfo(info); + } + + private void populateFromPubKeyInfo(SubjectPublicKeyInfo info) + { + if (info.getAlgorithmId().getObjectId().equals(CryptoProObjectIdentifiers.gostR3410_2001)) + { + DERBitString bits = info.getPublicKeyData(); + ASN1OctetString key; + this.algorithm = "ECGOST3410"; + + try + { + key = (ASN1OctetString) ASN1Primitive.fromByteArray(bits.getBytes()); + } + catch (IOException ex) + { + throw new IllegalArgumentException("error recovering public key"); + } + + byte[] keyEnc = key.getOctets(); + byte[] x = new byte[32]; + byte[] y = new byte[32]; + + for (int i = 0; i != x.length; i++) + { + x[i] = keyEnc[32 - 1 - i]; + } + + for (int i = 0; i != y.length; i++) + { + y[i] = keyEnc[64 - 1 - i]; + } + + gostParams = new GOST3410PublicKeyAlgParameters((ASN1Sequence)info.getAlgorithmId().getParameters()); + + ECNamedCurveParameterSpec spec = ECGOST3410NamedCurveTable.getParameterSpec(ECGOST3410NamedCurves.getName(gostParams.getPublicKeyParamSet())); + + ECCurve curve = spec.getCurve(); + EllipticCurve ellipticCurve = EC5Util.convertCurve(curve, spec.getSeed()); + + this.q = curve.createPoint(new BigInteger(1, x), new BigInteger(1, y), false); + + ecSpec = new ECNamedCurveSpec( + ECGOST3410NamedCurves.getName(gostParams.getPublicKeyParamSet()), + ellipticCurve, + new ECPoint( + spec.getG().getAffineXCoord().toBigInteger(), + spec.getG().getAffineYCoord().toBigInteger()), + spec.getN(), spec.getH()); + + } + else + { + X962Parameters params = new X962Parameters((ASN1Primitive)info.getAlgorithmId().getParameters()); + ECCurve curve; + EllipticCurve ellipticCurve; + + if (params.isNamedCurve()) + { + ASN1ObjectIdentifier oid = (ASN1ObjectIdentifier)params.getParameters(); + X9ECParameters ecP = ECUtil.getNamedCurveByOid(oid); + + curve = ecP.getCurve(); + ellipticCurve = EC5Util.convertCurve(curve, ecP.getSeed()); + + ecSpec = new ECNamedCurveSpec( + ECUtil.getCurveName(oid), + ellipticCurve, + new ECPoint( + ecP.getG().getAffineXCoord().toBigInteger(), + ecP.getG().getAffineYCoord().toBigInteger()), + ecP.getN(), + ecP.getH()); + } + else if (params.isImplicitlyCA()) + { + ecSpec = null; + curve = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa().getCurve(); + } + else + { + X9ECParameters ecP = X9ECParameters.getInstance(params.getParameters()); + + curve = ecP.getCurve(); + ellipticCurve = EC5Util.convertCurve(curve, ecP.getSeed()); + + this.ecSpec = new ECParameterSpec( + ellipticCurve, + new ECPoint( + ecP.getG().getAffineXCoord().toBigInteger(), + ecP.getG().getAffineYCoord().toBigInteger()), + ecP.getN(), + ecP.getH().intValue()); + } + + DERBitString bits = info.getPublicKeyData(); + byte[] data = bits.getBytes(); + ASN1OctetString key = new DEROctetString(data); + + // + // extra octet string - one of our old certs... + // + if (data[0] == 0x04 && data[1] == data.length - 2 + && (data[2] == 0x02 || data[2] == 0x03)) + { + int qLength = new X9IntegerConverter().getByteLength(curve); + + if (qLength >= data.length - 3) + { + try + { + key = (ASN1OctetString) ASN1Primitive.fromByteArray(data); + } + catch (IOException ex) + { + throw new IllegalArgumentException("error recovering public key"); + } + } + } + X9ECPoint derQ = new X9ECPoint(curve, key); + + this.q = derQ.getPoint(); + } + } + + public String getAlgorithm() + { + return algorithm; + } + + public String getFormat() + { + return "X.509"; + } + + public byte[] getEncoded() + { + ASN1Encodable params; + SubjectPublicKeyInfo info; + + if (algorithm.equals("ECGOST3410")) + { + if (gostParams != null) + { + params = gostParams; + } + else + { + if (ecSpec instanceof ECNamedCurveSpec) + { + params = new GOST3410PublicKeyAlgParameters( + ECGOST3410NamedCurves.getOID(((ECNamedCurveSpec)ecSpec).getName()), + CryptoProObjectIdentifiers.gostR3411_94_CryptoProParamSet); + } + else + { // strictly speaking this may not be applicable... + ECCurve curve = EC5Util.convertCurve(ecSpec.getCurve()); + + X9ECParameters ecP = new X9ECParameters( + curve, + EC5Util.convertPoint(curve, ecSpec.getGenerator(), withCompression), + ecSpec.getOrder(), + BigInteger.valueOf(ecSpec.getCofactor()), + ecSpec.getCurve().getSeed()); + + params = new X962Parameters(ecP); + } + } + + BigInteger bX = this.q.getAffineXCoord().toBigInteger(); + BigInteger bY = this.q.getAffineYCoord().toBigInteger(); + byte[] encKey = new byte[64]; + + extractBytes(encKey, 0, bX); + extractBytes(encKey, 32, bY); + + try + { + info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(CryptoProObjectIdentifiers.gostR3410_2001, params), new DEROctetString(encKey)); + } + catch (IOException e) + { + return null; + } + } + else + { + if (ecSpec instanceof ECNamedCurveSpec) + { + ASN1ObjectIdentifier curveOid = ECUtil.getNamedCurveOid(((ECNamedCurveSpec)ecSpec).getName()); + if (curveOid == null) + { + curveOid = new ASN1ObjectIdentifier(((ECNamedCurveSpec)ecSpec).getName()); + } + params = new X962Parameters(curveOid); + } + else if (ecSpec == null) + { + params = new X962Parameters(DERNull.INSTANCE); + } + else + { + ECCurve curve = EC5Util.convertCurve(ecSpec.getCurve()); + + X9ECParameters ecP = new X9ECParameters( + curve, + EC5Util.convertPoint(curve, ecSpec.getGenerator(), withCompression), + ecSpec.getOrder(), + BigInteger.valueOf(ecSpec.getCofactor()), + ecSpec.getCurve().getSeed()); + + params = new X962Parameters(ecP); + } + + ECCurve curve = this.engineGetQ().getCurve(); + ASN1OctetString p = (ASN1OctetString) + new X9ECPoint(curve.createPoint(this.getQ().getAffineXCoord().toBigInteger(), this.getQ().getAffineYCoord().toBigInteger(), withCompression)).toASN1Primitive(); + + info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(X9ObjectIdentifiers.id_ecPublicKey, params), p.getOctets()); + } + + return KeyUtil.getEncodedSubjectPublicKeyInfo(info); + } + + private void extractBytes(byte[] encKey, int offSet, BigInteger bI) + { + byte[] val = bI.toByteArray(); + if (val.length < 32) + { + byte[] tmp = new byte[32]; + System.arraycopy(val, 0, tmp, tmp.length - val.length, val.length); + val = tmp; + } + + for (int i = 0; i != 32; i++) + { + encKey[offSet + i] = val[val.length - 1 - i]; + } + } + + public ECParameterSpec getParams() + { + return ecSpec; + } + + public org.spongycastle.jce.spec.ECParameterSpec getParameters() + { + if (ecSpec == null) // implictlyCA + { + return null; + } + + return EC5Util.convertSpec(ecSpec, withCompression); + } + + public ECPoint getW() + { + return new ECPoint(q.getAffineXCoord().toBigInteger(), q.getAffineYCoord().toBigInteger()); + } + + public org.spongycastle.math.ec.ECPoint getQ() + { + if (ecSpec == null) + { + return q.getDetachedPoint(); + } + + return q; + } + + public org.spongycastle.math.ec.ECPoint engineGetQ() + { + return q; + } + + org.spongycastle.jce.spec.ECParameterSpec engineGetSpec() + { + if (ecSpec != null) + { + return EC5Util.convertSpec(ecSpec, withCompression); + } + + return BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa(); + } + + public String toString() + { + StringBuffer buf = new StringBuffer(); + String nl = System.getProperty("line.separator"); + + buf.append("EC Public Key").append(nl); + buf.append(" X: ").append(this.q.getAffineXCoord().toBigInteger().toString(16)).append(nl); + buf.append(" Y: ").append(this.q.getAffineYCoord().toBigInteger().toString(16)).append(nl); + + return buf.toString(); + + } + + public void setPointFormat(String style) + { + withCompression = !("UNCOMPRESSED".equalsIgnoreCase(style)); + } + + public boolean equals(Object o) + { + if (!(o instanceof JCEECPublicKey)) + { + return false; + } + + JCEECPublicKey other = (JCEECPublicKey)o; + + return engineGetQ().equals(other.engineGetQ()) && (engineGetSpec().equals(other.engineGetSpec())); + } + + public int hashCode() + { + return engineGetQ().hashCode() ^ engineGetSpec().hashCode(); + } + + private void readObject( + ObjectInputStream in) + throws IOException, ClassNotFoundException + { + byte[] enc = (byte[])in.readObject(); + + populateFromPubKeyInfo(SubjectPublicKeyInfo.getInstance(ASN1Primitive.fromByteArray(enc))); + + this.algorithm = (String)in.readObject(); + this.withCompression = in.readBoolean(); + } + + private void writeObject( + ObjectOutputStream out) + throws IOException + { + out.writeObject(this.getEncoded()); + out.writeObject(algorithm); + out.writeBoolean(withCompression); + } +} |