diff options
Diffstat (limited to 'core/src/main/java/org/spongycastle/crypto/Digest.java')
-rw-r--r-- | core/src/main/java/org/spongycastle/crypto/Digest.java | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/core/src/main/java/org/spongycastle/crypto/Digest.java b/core/src/main/java/org/spongycastle/crypto/Digest.java new file mode 100644 index 00000000..33103b26 --- /dev/null +++ b/core/src/main/java/org/spongycastle/crypto/Digest.java @@ -0,0 +1,51 @@ +package org.spongycastle.crypto; + +/** + * interface that a message digest conforms to. + */ +public interface Digest +{ + /** + * return the algorithm name + * + * @return the algorithm name + */ + public String getAlgorithmName(); + + /** + * return the size, in bytes, of the digest produced by this message digest. + * + * @return the size, in bytes, of the digest produced by this message digest. + */ + public int getDigestSize(); + + /** + * update the message digest with a single byte. + * + * @param in the input byte to be entered. + */ + public void update(byte in); + + /** + * update the message digest with a block of bytes. + * + * @param in the byte array containing the data. + * @param inOff the offset into the byte array where the data starts. + * @param len the length of the data. + */ + public void update(byte[] in, int inOff, int len); + + /** + * close the digest, producing the final digest value. The doFinal + * call leaves the digest reset. + * + * @param out the array the digest is to be copied into. + * @param outOff the offset into the out array the digest is to start at. + */ + public int doFinal(byte[] out, int outOff); + + /** + * reset the digest back to it's initial state. + */ + public void reset(); +} |