diff options
Diffstat (limited to 'prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/gost/BCGOST3410PrivateKey.java')
| -rw-r--r-- | prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/gost/BCGOST3410PrivateKey.java | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/gost/BCGOST3410PrivateKey.java b/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/gost/BCGOST3410PrivateKey.java new file mode 100644 index 00000000..13340f1e --- /dev/null +++ b/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/gost/BCGOST3410PrivateKey.java @@ -0,0 +1,253 @@ +package org.spongycastle.jcajce.provider.asymmetric.gost; + +import java.io.IOException; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.math.BigInteger; +import java.util.Enumeration; + +import org.spongycastle.asn1.ASN1Encodable; +import org.spongycastle.asn1.ASN1Encoding; +import org.spongycastle.asn1.ASN1ObjectIdentifier; +import org.spongycastle.asn1.ASN1OctetString; +import org.spongycastle.asn1.ASN1Sequence; +import org.spongycastle.asn1.DEROctetString; +import org.spongycastle.asn1.cryptopro.CryptoProObjectIdentifiers; +import org.spongycastle.asn1.cryptopro.GOST3410PublicKeyAlgParameters; +import org.spongycastle.asn1.pkcs.PrivateKeyInfo; +import org.spongycastle.asn1.x509.AlgorithmIdentifier; +import org.spongycastle.crypto.params.GOST3410PrivateKeyParameters; +import org.spongycastle.jcajce.provider.asymmetric.util.PKCS12BagAttributeCarrierImpl; +import org.spongycastle.jce.interfaces.GOST3410Params; +import org.spongycastle.jce.interfaces.GOST3410PrivateKey; +import org.spongycastle.jce.interfaces.PKCS12BagAttributeCarrier; +import org.spongycastle.jce.spec.GOST3410ParameterSpec; +import org.spongycastle.jce.spec.GOST3410PrivateKeySpec; +import org.spongycastle.jce.spec.GOST3410PublicKeyParameterSetSpec; + +public class BCGOST3410PrivateKey + implements GOST3410PrivateKey, PKCS12BagAttributeCarrier +{ + static final long serialVersionUID = 8581661527592305464L; + + private BigInteger x; + + private transient GOST3410Params gost3410Spec; + private transient PKCS12BagAttributeCarrier attrCarrier = new PKCS12BagAttributeCarrierImpl(); + + protected BCGOST3410PrivateKey() + { + } + + BCGOST3410PrivateKey( + GOST3410PrivateKey key) + { + this.x = key.getX(); + this.gost3410Spec = key.getParameters(); + } + + BCGOST3410PrivateKey( + GOST3410PrivateKeySpec spec) + { + this.x = spec.getX(); + this.gost3410Spec = new GOST3410ParameterSpec(new GOST3410PublicKeyParameterSetSpec(spec.getP(), spec.getQ(), spec.getA())); + } + + BCGOST3410PrivateKey( + PrivateKeyInfo info) + throws IOException + { + GOST3410PublicKeyAlgParameters params = new GOST3410PublicKeyAlgParameters((ASN1Sequence)info.getAlgorithmId().getParameters()); + ASN1OctetString derX = ASN1OctetString.getInstance(info.parsePrivateKey()); + byte[] keyEnc = derX.getOctets(); + byte[] keyBytes = new byte[keyEnc.length]; + + for (int i = 0; i != keyEnc.length; i++) + { + keyBytes[i] = keyEnc[keyEnc.length - 1 - i]; // was little endian + } + + this.x = new BigInteger(1, keyBytes); + this.gost3410Spec = GOST3410ParameterSpec.fromPublicKeyAlg(params); + } + + BCGOST3410PrivateKey( + GOST3410PrivateKeyParameters params, + GOST3410ParameterSpec spec) + { + this.x = params.getX(); + this.gost3410Spec = spec; + + if (spec == null) + { + throw new IllegalArgumentException("spec is null"); + } + } + + public String getAlgorithm() + { + return "GOST3410"; + } + + /** + * return the encoding format we produce in getEncoded(). + * + * @return the string "PKCS#8" + */ + public String getFormat() + { + return "PKCS#8"; + } + + /** + * Return a PKCS8 representation of the key. The sequence returned + * represents a full PrivateKeyInfo object. + * + * @return a PKCS8 representation of the key. + */ + public byte[] getEncoded() + { + PrivateKeyInfo info; + byte[] keyEnc = this.getX().toByteArray(); + byte[] keyBytes; + + if (keyEnc[0] == 0) + { + keyBytes = new byte[keyEnc.length - 1]; + } + else + { + keyBytes = new byte[keyEnc.length]; + } + + for (int i = 0; i != keyBytes.length; i++) + { + keyBytes[i] = keyEnc[keyEnc.length - 1 - i]; // must be little endian + } + + try + { + if (gost3410Spec instanceof GOST3410ParameterSpec) + { + info = new PrivateKeyInfo(new AlgorithmIdentifier(CryptoProObjectIdentifiers.gostR3410_94, new GOST3410PublicKeyAlgParameters(new ASN1ObjectIdentifier(gost3410Spec.getPublicKeyParamSetOID()), new ASN1ObjectIdentifier(gost3410Spec.getDigestParamSetOID()))), new DEROctetString(keyBytes)); + } + else + { + info = new PrivateKeyInfo(new AlgorithmIdentifier(CryptoProObjectIdentifiers.gostR3410_94), new DEROctetString(keyBytes)); + } + + return info.getEncoded(ASN1Encoding.DER); + } + catch (IOException e) + { + return null; + } + } + + public GOST3410Params getParameters() + { + return gost3410Spec; + } + + public BigInteger getX() + { + return x; + } + + public boolean equals( + Object o) + { + if (!(o instanceof GOST3410PrivateKey)) + { + return false; + } + + GOST3410PrivateKey other = (GOST3410PrivateKey)o; + + return this.getX().equals(other.getX()) + && this.getParameters().getPublicKeyParameters().equals(other.getParameters().getPublicKeyParameters()) + && this.getParameters().getDigestParamSetOID().equals(other.getParameters().getDigestParamSetOID()) + && compareObj(this.getParameters().getEncryptionParamSetOID(), other.getParameters().getEncryptionParamSetOID()); + } + + private boolean compareObj(Object o1, Object o2) + { + if (o1 == o2) + { + return true; + } + + if (o1 == null) + { + return false; + } + + return o1.equals(o2); + } + + public int hashCode() + { + return this.getX().hashCode() ^ gost3410Spec.hashCode(); + } + + public void setBagAttribute( + ASN1ObjectIdentifier oid, + ASN1Encodable attribute) + { + attrCarrier.setBagAttribute(oid, attribute); + } + + public ASN1Encodable getBagAttribute( + ASN1ObjectIdentifier oid) + { + return attrCarrier.getBagAttribute(oid); + } + + public Enumeration getBagAttributeKeys() + { + return attrCarrier.getBagAttributeKeys(); + } + + private void readObject( + ObjectInputStream in) + throws IOException, ClassNotFoundException + { + in.defaultReadObject(); + + String publicKeyParamSetOID = (String)in.readObject(); + if (publicKeyParamSetOID != null) + { + this.gost3410Spec = new GOST3410ParameterSpec(publicKeyParamSetOID, (String)in.readObject(), (String)in.readObject()); + } + else + { + this.gost3410Spec = new GOST3410ParameterSpec(new GOST3410PublicKeyParameterSetSpec((BigInteger)in.readObject(), (BigInteger)in.readObject(), (BigInteger)in.readObject())); + in.readObject(); + in.readObject(); + } + this.attrCarrier = new PKCS12BagAttributeCarrierImpl(); + } + + private void writeObject( + ObjectOutputStream out) + throws IOException + { + out.defaultWriteObject(); + + if (gost3410Spec.getPublicKeyParamSetOID() != null) + { + out.writeObject(gost3410Spec.getPublicKeyParamSetOID()); + out.writeObject(gost3410Spec.getDigestParamSetOID()); + out.writeObject(gost3410Spec.getEncryptionParamSetOID()); + } + else + { + out.writeObject(null); + out.writeObject(gost3410Spec.getPublicKeyParameters().getP()); + out.writeObject(gost3410Spec.getPublicKeyParameters().getQ()); + out.writeObject(gost3410Spec.getPublicKeyParameters().getA()); + out.writeObject(gost3410Spec.getDigestParamSetOID()); + out.writeObject(gost3410Spec.getEncryptionParamSetOID()); + } + } +} |