core/src/main/java/org/bouncycastle/crypto/DerivationFunction.java


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package org.bouncycastle.crypto;

/**
 * base interface for general purpose byte derivation functions.
 */
public interface DerivationFunction
{
    public void init(DerivationParameters param);

    public int generateBytes(byte[] out, int outOff, int len)
        throws DataLengthException, IllegalArgumentException;
}