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Add support for SHA256 digest of ByteBuffer in Crypto class

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catbref 2020-11-02 10:47:27 +00:00
parent ee08410260
commit de2fc78ad1
1 changed files with 22 additions and 0 deletions
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22
src/main/java/org/qortal/crypto/Crypto.java
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@ -1,5 +1,6 @@
package org.qortal.crypto;
import java.nio.ByteBuffer;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
@ -42,6 +43,27 @@ public abstract class Crypto {
}
}
/**
* Returns 32-byte SHA-256 digest of message passed in input.
*
* @param input
* variable-length byte[] message
* @return byte[32] digest, or null if SHA-256 algorithm can't be accessed
*/
public static byte[] digest(ByteBuffer input) {
if (input == null)
return null;
try {
// SHA2-256
MessageDigest sha256 = MessageDigest.getInstance("SHA-256");
sha256.update(input);
return sha256.digest();
} catch (NoSuchAlgorithmException e) {
throw new RuntimeException("SHA-256 message digest not available");
}
}
/**
* Returns 32-byte digest of two rounds of SHA-256 on message passed in input.
*