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JCERSAPublicKey.javaAPI DocAzureus 3.0.3.43507Tue Jun 08 05:12:56 BST 2004org.bouncycastle.jce.provider

JCERSAPublicKey

public class JCERSAPublicKey extends Object implements RSAPublicKey

Fields Summary
private BigInteger
modulus
private BigInteger
publicExponent
Constructors Summary
JCERSAPublicKey(org.bouncycastle.crypto.params.RSAKeyParameters key)

        this.modulus = key.getModulus();
        this.publicExponent = key.getExponent();
JCERSAPublicKey(RSAPublicKeySpec spec)

        this.modulus = spec.getModulus();
        this.publicExponent = spec.getPublicExponent();
JCERSAPublicKey(RSAPublicKey key)

        this.modulus = key.getModulus();
        this.publicExponent = key.getPublicExponent();
JCERSAPublicKey(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo info)

        try
        {
            RSAPublicKeyStructure   pubKey = new RSAPublicKeyStructure((ASN1Sequence)info.getPublicKey());

            this.modulus = pubKey.getModulus();
            this.publicExponent = pubKey.getPublicExponent();
		}
        catch (IOException e)
        {
			throw new IllegalArgumentException("invalid info structure in RSA public key");
        }
Methods Summary
public booleanequals(java.lang.Object o)

		if ( !(o instanceof RSAPublicKey) )
		{
			return false;
		}

		if ( o == this )
		{
			return true;
		}

		RSAPublicKey key = (RSAPublicKey)o;

		return getModulus().equals(key.getModulus())
			&& getPublicExponent().equals(key.getPublicExponent());
public java.lang.StringgetAlgorithm()

        return "RSA";
public byte[]getEncoded()

        ByteArrayOutputStream   bOut = new ByteArrayOutputStream();
        DEROutputStream         dOut = new DEROutputStream(bOut);
        SubjectPublicKeyInfo    info = new SubjectPublicKeyInfo(new AlgorithmIdentifier(PKCSObjectIdentifiers.rsaEncryption, new DERNull()), new RSAPublicKeyStructure(getModulus(), getPublicExponent()).getDERObject());

        try
        {
            dOut.writeObject(info);
            dOut.close();
        }
        catch (IOException e)
        {
            throw new RuntimeException("Error encoding RSA public key");
        }

        return bOut.toByteArray();
public java.lang.StringgetFormat()

        return "X.509";
public java.math.BigIntegergetModulus()
return the modulus.

return
the modulus.

        return modulus;
public java.math.BigIntegergetPublicExponent()
return the public exponent.

return
the public exponent.

        return publicExponent;
public java.lang.StringtoString()

        StringBuffer    buf = new StringBuffer();
        String          nl = System.getProperty("line.separator");

        buf.append("RSA Public Key" + nl);
        buf.append("            modulus: " + this.getModulus().toString(16) + nl);
        buf.append("    public exponent: " + this.getPublicExponent().toString(16) + nl);

        return buf.toString();