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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8 with debug enabled.
package org.bouncycastle.asn1.x509;
import java.math.BigInteger;
import java.util.Enumeration;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERSequence;
/**
* @deprecated use org.bouncycastle.asn1.pkcs.RSAPublicKey
*/
public class RSAPublicKeyStructure
extends ASN1Object
{
private BigInteger modulus;
private BigInteger publicExponent;
public static RSAPublicKeyStructure getInstance(
ASN1TaggedObject obj,
boolean explicit)
{
return getInstance(ASN1Sequence.getInstance(obj, explicit));
}
public static RSAPublicKeyStructure getInstance(
Object obj)
{
if(obj == null || obj instanceof RSAPublicKeyStructure)
{
return (RSAPublicKeyStructure)obj;
}
if(obj instanceof ASN1Sequence)
{
return new RSAPublicKeyStructure((ASN1Sequence)obj);
}
throw new IllegalArgumentException("Invalid RSAPublicKeyStructure: " + obj.getClass().getName());
}
public RSAPublicKeyStructure(
BigInteger modulus,
BigInteger publicExponent)
{
this.modulus = modulus;
this.publicExponent = publicExponent;
}
public RSAPublicKeyStructure(
ASN1Sequence seq)
{
if (seq.size() != 2)
{
throw new IllegalArgumentException("Bad sequence size: "
+ seq.size());
}
Enumeration e = seq.getObjects();
modulus = ASN1Integer.getInstance(e.nextElement()).getPositiveValue();
publicExponent = ASN1Integer.getInstance(e.nextElement()).getPositiveValue();
}
public BigInteger getModulus()
{
return modulus;
}
public BigInteger getPublicExponent()
{
return publicExponent;
}
/**
* This outputs the key in PKCS1v2 format.
*
* RSAPublicKey ::= SEQUENCE {
* modulus INTEGER, -- n
* publicExponent INTEGER, -- e
* }
*
*
*/
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(new ASN1Integer(getModulus()));
v.add(new ASN1Integer(getPublicExponent()));
return new DERSequence(v);
}
}
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