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-rw-r--r--java-c-jni/SHA3.java106
1 files changed, 106 insertions, 0 deletions
diff --git a/java-c-jni/SHA3.java b/java-c-jni/SHA3.java
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+/**
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+
+/**
+ * SHA-3/Keccak hash algorithm implementation
+ *
+ * @author Mattias Andrée <a href="mailto:maandree@member.fsf.org">maandree@member.fsf.org</a>
+ */
+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);
+
+}