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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.4.
package org.bouncycastle.pqc.crypto.picnic;
class Signature2
{
byte[] salt;
byte[] iSeedInfo; // Info required to recompute the tree of all initial seeds
int iSeedInfoLen;
byte[] cvInfo; // Info required to check commitments to views (reconstruct Merkle tree)
int cvInfoLen;
byte[] challengeHash;
int[] challengeC;
int[] challengeP;
Proof2[] proofs; // One proof for each online execution the verifier checks
//todo initialize in engine!
public Signature2(PicnicEngine engine)
{
challengeHash = new byte[engine.digestSizeBytes];
salt = new byte[PicnicEngine.saltSizeBytes];
challengeC = new int[engine.numOpenedRounds];
challengeP = new int[engine.numOpenedRounds];
proofs = new Proof2[engine.numMPCRounds];
}
public static class Proof2
{
byte[] seedInfo; // Information required to compute the tree with seeds of of all opened parties
int seedInfoLen; // Length of seedInfo buffer
byte[] aux; // Last party's correction bits; NULL if P[t] == N-1
byte[] C; // Commitment to preprocessing step of unopened party
byte[] input; // Masked input used in online execution
byte[] msgs; // Broadcast messages of unopened party P[t]
public Proof2(PicnicEngine engine)
{
seedInfo = null;
seedInfoLen = 0;
C = new byte[engine.digestSizeBytes];
input = new byte[engine.stateSizeBytes];
aux = new byte[engine.andSizeBytes];
msgs = new byte[engine.andSizeBytes];
}
}
}