52 lines
1.3 KiB
Java
52 lines
1.3 KiB
Java
package org.bouncycastle.crypto;
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/**
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* interface that a message digest conforms to.
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*/
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public interface Digest
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{
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/**
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* return the algorithm name
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*
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* @return the algorithm name
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*/
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public String getAlgorithmName();
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/**
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* return the size, in bytes, of the digest produced by this message digest.
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*
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* @return the size, in bytes, of the digest produced by this message digest.
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*/
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public int getDigestSize();
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/**
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* update the message digest with a single byte.
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*
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* @param in the input byte to be entered.
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*/
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public void update(byte in);
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/**
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* update the message digest with a block of bytes.
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*
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* @param in the byte array containing the data.
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* @param inOff the offset into the byte array where the data starts.
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* @param len the length of the data.
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*/
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public void update(byte[] in, int inOff, int len);
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/**
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* close the digest, producing the final digest value. The doFinal
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* call leaves the digest reset.
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*
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* @param out the array the digest is to be copied into.
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* @param outOff the offset into the out array the digest is to start at.
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*/
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public int doFinal(byte[] out, int outOff);
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/**
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* reset the digest back to it's initial state.
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*/
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public void reset();
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}
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