diff options
Diffstat (limited to 'libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/elgamal/BCElGamalPublicKey.java')
-rw-r--r-- | libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/elgamal/BCElGamalPublicKey.java | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/elgamal/BCElGamalPublicKey.java b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/elgamal/BCElGamalPublicKey.java deleted file mode 100644 index 20d668cf4..000000000 --- a/libraries/spongycastle/prov/src/main/java/org/spongycastle/jcajce/provider/asymmetric/elgamal/BCElGamalPublicKey.java +++ /dev/null @@ -1,173 +0,0 @@ -package org.spongycastle.jcajce.provider.asymmetric.elgamal; - -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.spongycastle.asn1.ASN1Encoding; -import org.spongycastle.asn1.ASN1Sequence; -import org.spongycastle.asn1.DERInteger; -import org.spongycastle.asn1.oiw.ElGamalParameter; -import org.spongycastle.asn1.oiw.OIWObjectIdentifiers; -import org.spongycastle.asn1.x509.AlgorithmIdentifier; -import org.spongycastle.asn1.x509.SubjectPublicKeyInfo; -import org.spongycastle.crypto.params.ElGamalPublicKeyParameters; -import org.spongycastle.jce.interfaces.ElGamalPublicKey; -import org.spongycastle.jce.spec.ElGamalParameterSpec; -import org.spongycastle.jce.spec.ElGamalPublicKeySpec; - -public class BCElGamalPublicKey - implements ElGamalPublicKey, DHPublicKey -{ - static final long serialVersionUID = 8712728417091216948L; - - private BigInteger y; - private transient ElGamalParameterSpec elSpec; - - BCElGamalPublicKey( - ElGamalPublicKeySpec spec) - { - this.y = spec.getY(); - this.elSpec = new ElGamalParameterSpec(spec.getParams().getP(), spec.getParams().getG()); - } - - BCElGamalPublicKey( - DHPublicKeySpec spec) - { - this.y = spec.getY(); - this.elSpec = new ElGamalParameterSpec(spec.getP(), spec.getG()); - } - - BCElGamalPublicKey( - ElGamalPublicKey key) - { - this.y = key.getY(); - this.elSpec = key.getParameters(); - } - - BCElGamalPublicKey( - DHPublicKey key) - { - this.y = key.getY(); - this.elSpec = new ElGamalParameterSpec(key.getParams().getP(), key.getParams().getG()); - } - - BCElGamalPublicKey( - ElGamalPublicKeyParameters params) - { - this.y = params.getY(); - this.elSpec = new ElGamalParameterSpec(params.getParameters().getP(), params.getParameters().getG()); - } - - BCElGamalPublicKey( - BigInteger y, - ElGamalParameterSpec elSpec) - { - this.y = y; - this.elSpec = elSpec; - } - - BCElGamalPublicKey( - SubjectPublicKeyInfo info) - { - ElGamalParameter params = new ElGamalParameter((ASN1Sequence)info.getAlgorithmId().getParameters()); - DERInteger derY = null; - - try - { - derY = (DERInteger)info.parsePublicKey(); - } - catch (IOException e) - { - throw new IllegalArgumentException("invalid info structure in DSA public key"); - } - - this.y = derY.getValue(); - this.elSpec = new ElGamalParameterSpec(params.getP(), params.getG()); - } - - public String getAlgorithm() - { - return "ElGamal"; - } - - public String getFormat() - { - return "X.509"; - } - - public byte[] getEncoded() - { - try - { - SubjectPublicKeyInfo info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(OIWObjectIdentifiers.elGamalAlgorithm, new ElGamalParameter(elSpec.getP(), elSpec.getG())), new DERInteger(y)); - - return info.getEncoded(ASN1Encoding.DER); - } - catch (IOException e) - { - return null; - } - } - - public ElGamalParameterSpec getParameters() - { - return elSpec; - } - - public DHParameterSpec getParams() - { - return new DHParameterSpec(elSpec.getP(), elSpec.getG()); - } - - public BigInteger getY() - { - return y; - } - - public int hashCode() - { - return this.getY().hashCode() ^ this.getParams().getG().hashCode() - ^ this.getParams().getP().hashCode() ^ this.getParams().getL(); - } - - public boolean equals( - Object o) - { - if (!(o instanceof DHPublicKey)) - { - return false; - } - - DHPublicKey other = (DHPublicKey)o; - - return this.getY().equals(other.getY()) - && this.getParams().getG().equals(other.getParams().getG()) - && this.getParams().getP().equals(other.getParams().getP()) - && this.getParams().getL() == other.getParams().getL(); - } - - private void readObject( - ObjectInputStream in) - throws IOException, ClassNotFoundException - { - in.defaultReadObject(); - - this.elSpec = new ElGamalParameterSpec((BigInteger)in.readObject(), (BigInteger)in.readObject()); - } - - private void writeObject( - ObjectOutputStream out) - throws IOException - { - out.defaultWriteObject(); - - out.writeObject(elSpec.getP()); - out.writeObject(elSpec.getG()); - } -} |