/**
* Returns the ASN.1 encoding of this object.
*
* @return the ASN.1 encoding.
* @exception IOException if error occurs when constructing its ASN.1 encoding.
*/
public byte[] getEncoded() throws NoSuchAlgorithmException, IOException {
if (this.encoded != null) return this.encoded.clone();
DerOutputStream out = new DerOutputStream();
DerOutputStream tmp = new DerOutputStream();
DerOutputStream tmp2 = new DerOutputStream();
// encode encryption algorithm
AlgorithmId algid = AlgorithmId.get(digestAlgorithmName);
algid.encode(tmp2);
// encode digest data
tmp2.putOctetString(digest);
tmp.write(DerValue.tag_Sequence, tmp2);
// encode salt
tmp.putOctetString(macSalt);
// encode iterations
tmp.putInteger(iterations);
// wrap everything into a SEQUENCE
out.write(DerValue.tag_Sequence, tmp);
this.encoded = out.toByteArray();
return this.encoded.clone();
}
/**
* Encodes an MethodData object.
*
* @return the byte array of encoded MethodData object.
* @exception Asn1Exception if an error occurs while decoding an ASN1 encoded data.
* @exception IOException if an I/O error occurs while reading encoded data.
*/
public byte[] asn1Encode() throws Asn1Exception, IOException {
DerOutputStream bytes = new DerOutputStream();
DerOutputStream temp = new DerOutputStream();
temp.putInteger(BigInteger.valueOf(methodType));
bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x00), temp);
if (methodData != null) {
temp = new DerOutputStream();
temp.putOctetString(methodData);
bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0x01), temp);
}
temp = new DerOutputStream();
temp.write(DerValue.tag_Sequence, bytes);
return temp.toByteArray();
}