Mercurial > hg > Database > Christie
view src/main/java/christie/blockchain/HashUtil.java @ 146:0ef25958ac04
add transaction
author | akahori |
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date | Mon, 07 Jan 2019 16:02:26 +0900 |
parents | eab161e557bd |
children | cd2fab84cd8b |
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package christie.blockchain; import org.bouncycastle.crypto.digests.*; import static java.util.Arrays.copyOfRange; public class HashUtil { public byte[] sha256(byte[] input) { SHA256Digest digest = new SHA256Digest(); byte[] resBuf = new byte[digest.getDigestSize()]; if(input != null) { digest.update(input, 0, input.length); digest.doFinal(resBuf, 0); }else{ throw new NullPointerException("Can't sha256 input is null."); } return resBuf; } public byte[] sha3(byte[] input){ SHA3Digest digest = new SHA3Digest(); byte[] resBuf = new byte[digest.getDigestSize()]; if(input != null) { digest.update(input, 0, input.length); digest.doFinal(resBuf, 0); }else{ throw new NullPointerException("Can't sha3 input is null."); } return resBuf; } public byte[] ripemd160(byte[] input){ RIPEMD160Digest digest = new RIPEMD160Digest(); byte[] resBuf = new byte[digest.getDigestSize()]; if(input != null) { digest.update(input, 0, input.length); digest.doFinal(resBuf, 0); }else{ throw new NullPointerException("Can't ripemd160 input is null."); } return resBuf; } public byte[] sha3omit12(byte[] input) { byte[] hash = sha3(input); return copyOfRange(hash, 12, hash.length); } }