diff options
Diffstat (limited to 'prov/src/main/java/org/bouncycastle/jce/provider/JCEDHPublicKey.java')
-rw-r--r-- | prov/src/main/java/org/bouncycastle/jce/provider/JCEDHPublicKey.java | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/prov/src/main/java/org/bouncycastle/jce/provider/JCEDHPublicKey.java b/prov/src/main/java/org/bouncycastle/jce/provider/JCEDHPublicKey.java deleted file mode 100644 index 3e6a09a6..00000000 --- a/prov/src/main/java/org/bouncycastle/jce/provider/JCEDHPublicKey.java +++ /dev/null @@ -1,178 +0,0 @@ -package org.bouncycastle.jce.provider; - -import java.io.IOException; -import java.io.ObjectInputStream; -import java.io.ObjectOutputStream; -import java.math.BigInteger; - -import javax.crypto.interfaces.DHPublicKey; -import javax.crypto.spec.DHParameterSpec; -import javax.crypto.spec.DHPublicKeySpec; - -import org.bouncycastle.asn1.ASN1Integer; -import org.bouncycastle.asn1.ASN1ObjectIdentifier; -import org.bouncycastle.asn1.ASN1Sequence; -import org.bouncycastle.asn1.pkcs.DHParameter; -import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers; -import org.bouncycastle.asn1.x509.AlgorithmIdentifier; -import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo; -import org.bouncycastle.asn1.x9.DHDomainParameters; -import org.bouncycastle.asn1.x9.X9ObjectIdentifiers; -import org.bouncycastle.crypto.params.DHPublicKeyParameters; -import org.bouncycastle.jcajce.provider.asymmetric.util.KeyUtil; - -public class JCEDHPublicKey - implements DHPublicKey -{ - static final long serialVersionUID = -216691575254424324L; - - private BigInteger y; - private DHParameterSpec dhSpec; - private SubjectPublicKeyInfo info; - - JCEDHPublicKey( - DHPublicKeySpec spec) - { - this.y = spec.getY(); - this.dhSpec = new DHParameterSpec(spec.getP(), spec.getG()); - } - - JCEDHPublicKey( - DHPublicKey key) - { - this.y = key.getY(); - this.dhSpec = key.getParams(); - } - - JCEDHPublicKey( - DHPublicKeyParameters params) - { - this.y = params.getY(); - this.dhSpec = new DHParameterSpec(params.getParameters().getP(), params.getParameters().getG(), params.getParameters().getL()); - } - - JCEDHPublicKey( - BigInteger y, - DHParameterSpec dhSpec) - { - this.y = y; - this.dhSpec = dhSpec; - } - - JCEDHPublicKey( - SubjectPublicKeyInfo info) - { - this.info = info; - - ASN1Integer derY; - try - { - derY = (ASN1Integer)info.parsePublicKey(); - } - catch (IOException e) - { - throw new IllegalArgumentException("invalid info structure in DH public key"); - } - - this.y = derY.getValue(); - - ASN1Sequence seq = ASN1Sequence.getInstance(info.getAlgorithmId().getParameters()); - ASN1ObjectIdentifier id = info.getAlgorithmId().getAlgorithm(); - - // we need the PKCS check to handle older keys marked with the X9 oid. - if (id.equals(PKCSObjectIdentifiers.dhKeyAgreement) || isPKCSParam(seq)) - { - DHParameter params = DHParameter.getInstance(seq); - - if (params.getL() != null) - { - this.dhSpec = new DHParameterSpec(params.getP(), params.getG(), params.getL().intValue()); - } - else - { - this.dhSpec = new DHParameterSpec(params.getP(), params.getG()); - } - } - else if (id.equals(X9ObjectIdentifiers.dhpublicnumber)) - { - DHDomainParameters params = DHDomainParameters.getInstance(seq); - - this.dhSpec = new DHParameterSpec(params.getP().getValue(), params.getG().getValue()); - } - else - { - throw new IllegalArgumentException("unknown algorithm type: " + id); - } - } - - public String getAlgorithm() - { - return "DH"; - } - - public String getFormat() - { - return "X.509"; - } - - public byte[] getEncoded() - { - if (info != null) - { - return KeyUtil.getEncodedSubjectPublicKeyInfo(info); - } - - return KeyUtil.getEncodedSubjectPublicKeyInfo(new AlgorithmIdentifier(PKCSObjectIdentifiers.dhKeyAgreement, new DHParameter(dhSpec.getP(), dhSpec.getG(), dhSpec.getL())), new ASN1Integer(y)); - } - - public DHParameterSpec getParams() - { - return dhSpec; - } - - public BigInteger getY() - { - return y; - } - - private boolean isPKCSParam(ASN1Sequence seq) - { - if (seq.size() == 2) - { - return true; - } - - if (seq.size() > 3) - { - return false; - } - - ASN1Integer l = ASN1Integer.getInstance(seq.getObjectAt(2)); - ASN1Integer p = ASN1Integer.getInstance(seq.getObjectAt(0)); - - if (l.getValue().compareTo(BigInteger.valueOf(p.getValue().bitLength())) > 0) - { - return false; - } - - return true; - } - - private void readObject( - ObjectInputStream in) - throws IOException, ClassNotFoundException - { - this.y = (BigInteger)in.readObject(); - this.dhSpec = new DHParameterSpec((BigInteger)in.readObject(), (BigInteger)in.readObject(), in.readInt()); - } - - private void writeObject( - ObjectOutputStream out) - throws IOException - { - out.writeObject(this.getY()); - out.writeObject(dhSpec.getP()); - out.writeObject(dhSpec.getG()); - out.writeInt(dhSpec.getL()); - } -} |