diff options
author | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
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committer | David Hook <dgh@cryptoworkshop.com> | 2013-05-31 11:07:45 +0400 |
commit | 2b976f5364cfdbc37d3086019d93483c983eb80b (patch) | |
tree | cb846af3fd1d43f9c2562a1fb2d06b997ad8f229 /core/src/main/java/org/bouncycastle/crypto/engines/VMPCKSA3Engine.java | |
parent | 5f714bd92fbd780d22406f4bc3681be005f6f04a (diff) |
initial reshuffle
Diffstat (limited to 'core/src/main/java/org/bouncycastle/crypto/engines/VMPCKSA3Engine.java')
-rw-r--r-- | core/src/main/java/org/bouncycastle/crypto/engines/VMPCKSA3Engine.java | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/core/src/main/java/org/bouncycastle/crypto/engines/VMPCKSA3Engine.java b/core/src/main/java/org/bouncycastle/crypto/engines/VMPCKSA3Engine.java new file mode 100644 index 00000000..9e40272b --- /dev/null +++ b/core/src/main/java/org/bouncycastle/crypto/engines/VMPCKSA3Engine.java @@ -0,0 +1,45 @@ +package org.bouncycastle.crypto.engines; + +public class VMPCKSA3Engine extends VMPCEngine +{ + public String getAlgorithmName() + { + return "VMPC-KSA3"; + } + + protected void initKey(byte[] keyBytes, byte[] ivBytes) + { + s = 0; + P = new byte[256]; + for (int i = 0; i < 256; i++) + { + P[i] = (byte) i; + } + + for (int m = 0; m < 768; m++) + { + s = P[(s + P[m & 0xff] + keyBytes[m % keyBytes.length]) & 0xff]; + byte temp = P[m & 0xff]; + P[m & 0xff] = P[s & 0xff]; + P[s & 0xff] = temp; + } + + for (int m = 0; m < 768; m++) + { + s = P[(s + P[m & 0xff] + ivBytes[m % ivBytes.length]) & 0xff]; + byte temp = P[m & 0xff]; + P[m & 0xff] = P[s & 0xff]; + P[s & 0xff] = temp; + } + + for (int m = 0; m < 768; m++) + { + s = P[(s + P[m & 0xff] + keyBytes[m % keyBytes.length]) & 0xff]; + byte temp = P[m & 0xff]; + P[m & 0xff] = P[s & 0xff]; + P[s & 0xff] = temp; + } + + n = 0; + } +} |