From 5634e8ef2d331145e13da80af0bf31f3c01f3add Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sat, 9 Feb 2013 06:30:01 +0100 Subject: beginning jni implemenetation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- java-c-jni/SHA3.java | 106 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 java-c-jni/SHA3.java (limited to 'java-c-jni/SHA3.java') diff --git a/java-c-jni/SHA3.java b/java-c-jni/SHA3.java new file mode 100644 index 0000000..283c5df --- /dev/null +++ b/java-c-jni/SHA3.java @@ -0,0 +1,106 @@ +/** + * sha3sum – SHA-3 (Keccak) checksum calculator + * + * Copyright © 2013 Mattias Andrée (maandree@member.fsf.org) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + + +/** + * SHA-3/Keccak hash algorithm implementation + * + * @author Mattias Andrée maandree@member.fsf.org + */ +public class SHA3 +{ + /** + * Hidden constructor + */ + private SHA3() + { + // Inhibit instansiation + } + + + + /** + * Class initialiser + */ + static + { + /* TODO load lib here */ + } + + + + /** + * Initialise Keccak sponge + * + * @param r The bitrate + * @param c The capacity + * @param n The output size + */ + public static native void initialise(int r, int c, int n); + + + /** + * Absorb the more of the message message to the Keccak sponge + * + * @param msg The partial message + */ + public static void update(byte[] msg) + { + update(msg, msg.length); + } + + + /** + * Absorb the more of the message message to the Keccak sponge + * + * @param msg The partial message + * @param msglen The length of the partial message + */ + public static native void update(byte[] msg, int msglen); + + + /** + * Squeeze the Keccak sponge + */ + public static byte[] digest() + { + return digest(null); + } + + + /** + * Absorb the last part of the message and squeeze the Keccak sponge + * + * @param msg The rest of the message + */ + public static byte[] digest(byte[] msg) + { + return digest(msg, msg == null ? 0 : msg.length); + } + + + /** + * Absorb the last part of the message and squeeze the Keccak sponge + * + * @param msg The rest of the message + * @param msglen The length of the partial message + */ + public static native byte[] digest(byte[] msg, int msglen); + +} -- cgit v1.2.3-70-g09d2