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package org.spongycastle.openpgp.operator.bc;
import java.io.IOException;
import java.io.OutputStream;
import org.spongycastle.bcpg.HashAlgorithmTags;
import org.spongycastle.crypto.Digest;
import org.spongycastle.crypto.digests.SHA1Digest;
import org.spongycastle.openpgp.operator.PGPDigestCalculator;
class SHA1PGPDigestCalculator
implements PGPDigestCalculator
{
private Digest digest = new SHA1Digest();
public int getAlgorithm()
{
return HashAlgorithmTags.SHA1;
}
public OutputStream getOutputStream()
{
return new DigestOutputStream(digest);
}
public byte[] getDigest()
{
byte[] d = new byte[digest.getDigestSize()];
digest.doFinal(d, 0);
return d;
}
public void reset()
{
digest.reset();
}
private class DigestOutputStream
extends OutputStream
{
private Digest dig;
DigestOutputStream(Digest dig)
{
this.dig = dig;
}
public void write(byte[] bytes, int off, int len)
throws IOException
{
dig.update(bytes, off, len);
}
public void write(byte[] bytes)
throws IOException
{
dig.update(bytes, 0, bytes.length);
}
public void write(int b)
throws IOException
{
dig.update((byte)b);
}
}
}
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