package org.bouncycastle.pkcs;
import java.io.IOException;
import java.io.OutputStream;
import org.bouncycastle.asn1.pkcs.MacData;
import org.bouncycastle.asn1.pkcs.PKCS12PBEParams;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x509.DigestInfo;
import org.bouncycastle.operator.MacCalculator;
class MacDataGenerator
{
private PKCS12MacCalculatorBuilder builder;
MacDataGenerator(PKCS12MacCalculatorBuilder builder)
{
this.builder = builder;
}
public MacData build(char[] password, byte[] data)
throws PKCSException
{
MacCalculator macCalculator;
try
{
macCalculator = builder.build(password);
OutputStream out = macCalculator.getOutputStream();
out.write(data);
out.close();
}
catch (Exception e)
{
throw new PKCSException("unable to process data: " + e.getMessage(), e);
}
AlgorithmIdentifier algId = macCalculator.getAlgorithmIdentifier();
DigestInfo dInfo = new DigestInfo(builder.getDigestAlgorithmIdentifier(), macCalculator.getMac());
PKCS12PBEParams params = PKCS12PBEParams.getInstance(algId.getParameters());
return new MacData(dInfo, params.getIV(), params.getIterations().intValue());
}
}