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org.bouncycastle.pqc.crypto.bike

pack-priv Class BIKEEngine

extends Object
Class Inheritance
Imports
java.security.SecureRandom, org.bouncycastle.crypto.Xof, org.bouncycastle.crypto.digests.SHA3Digest, .SHAKEDigest, org.bouncycastle.util.Arrays, .Bytes

Field Summary

Modifier and TypeField and Description
private final BIKERing
bikeRing

private int
hw

private int
L_BYTE

private int
nbIter

private int
r

private int
R2_BYTE

private int
R_BYTE

private int
t

private int
tau

private int
w

Constructor Summary

AccessConstructor and Description
public
BIKEEngine(int r, int w, int t, int l, int nbIter, int tau)

Method Summary

Modifier and TypeMethod and Description
private void
BFIter(byte[] s, byte[] e, int T, int[] h0Compact, int[] h1Compact, int[] h0CompactCol, int[] h1CompactCol, byte[] black, byte[] gray, byte[] ctrs)

private void
BFIter2(byte[] s, byte[] e, int T, int[] h0Compact, int[] h1Compact, int[] h0CompactCol, int[] h1CompactCol, byte[] ctrs)

private void
BFMaskedIter(byte[] s, byte[] e, byte[] mask, int T, int[] h0Compact, int[] h1Compact, int[] h0CompactCol, int[] h1CompactCol)

private byte[]
BGFDecoder(byte[] s, int[] h0Compact, int[] h1Compact)

private byte[]
computeSyndrome(byte[] c0, byte[] h0)

private void
convertToCompact(int[] compactVersion, byte[] h)

private int
ctr(int[] hCompactCol, byte[] s, int j)

private void
ctrAll(int[] hCompactCol, byte[] s, byte[] ctrs)

public void
decaps(byte[]
session key
k, byte[]
private key
h0, byte[]
private key
h1, byte[]
private key
sigma, byte[]
ciphertext
c0, byte[]
ciphertext
c1)

KEM Decapsulation - Input: (h0, h1, sigma), (c0, c1) - Output: k

public void
encaps(byte[]
ciphertext
c0, byte[]
ciphertext
c1, byte[]
session key
k, byte[]
public key
h, SecureRandom
Secure Random
random)

KEM Encapsulation - Input: h - Output: (c0,c1,k)

private byte[]
functionH(byte[] seed)

private void
functionK(byte[] m, byte[] c0, byte[] c1, byte[] result)

private void
functionL(byte[] e0, byte[] e1, byte[] result)

public void
genKeyPair(byte[]
h0
h0, byte[]
h1
h1, byte[]
sigma
sigma, byte[]
h
h, SecureRandom
Secure Random
random)

Generate key pairs - Secret key : (h0, h1, sigma) - Public key: h

private int[]
getColumnFromCompactVersion(int[] hCompact)

public int
getSessionKeySize()

private void
recomputeSyndrome(byte[] syndrome, int index, int[] h0Compact, int[] h1Compact, boolean isOne)

private void
splitEBytes(byte[] e, byte[] e0, byte[] e1)

private int
threshold(int hammingWeight, int r)

private static int
thresholdFromParameters(int hammingWeight, double dm, double da, int min)

private void
updateNewErrorIndex(byte[] e, int index, boolean isOne)

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

bikeRingback to summary
private final BIKERing bikeRing
hwback to summary
private int hw
L_BYTEback to summary
private int L_BYTE
nbIterback to summary
private int nbIter
rback to summary
private int r
R2_BYTEback to summary
private int R2_BYTE
R_BYTEback to summary
private int R_BYTE
tback to summary
private int t
tauback to summary
private int tau
wback to summary
private int w

Constructor Detail

BIKEEngineback to summary
public BIKEEngine(int r, int w, int t, int l, int nbIter, int tau)

Method Detail

BFIterback to summary
private void BFIter(byte[] s, byte[] e, int T, int[] h0Compact, int[] h1Compact, int[] h0CompactCol, int[] h1CompactCol, byte[] black, byte[] gray, byte[] ctrs)
BFIter2back to summary
private void BFIter2(byte[] s, byte[] e, int T, int[] h0Compact, int[] h1Compact, int[] h0CompactCol, int[] h1CompactCol, byte[] ctrs)
BFMaskedIterback to summary
private void BFMaskedIter(byte[] s, byte[] e, byte[] mask, int T, int[] h0Compact, int[] h1Compact, int[] h0CompactCol, int[] h1CompactCol)
BGFDecoderback to summary
private byte[] BGFDecoder(byte[] s, int[] h0Compact, int[] h1Compact)
computeSyndromeback to summary
private byte[] computeSyndrome(byte[] c0, byte[] h0)
convertToCompactback to summary
private void convertToCompact(int[] compactVersion, byte[] h)
ctrback to summary
private int ctr(int[] hCompactCol, byte[] s, int j)
ctrAllback to summary
private void ctrAll(int[] hCompactCol, byte[] s, byte[] ctrs)
decapsback to summary
public void decaps(byte[] k, byte[] h0, byte[] h1, byte[] sigma, byte[] c0, byte[] c1)

KEM Decapsulation - Input: (h0, h1, sigma), (c0, c1) - Output: k

Parameters
k:byte[]

session key

h0:byte[]

private key

h1:byte[]

private key

sigma:byte[]

private key

c0:byte[]

ciphertext

c1:byte[]

ciphertext

encapsback to summary
public void encaps(byte[] c0, byte[] c1, byte[] k, byte[] h, SecureRandom random)

KEM Encapsulation - Input: h - Output: (c0,c1,k)

Parameters
c0:byte[]

ciphertext

c1:byte[]

ciphertext

k:byte[]

session key

h:byte[]

public key

random:SecureRandom

Secure Random

functionHback to summary
private byte[] functionH(byte[] seed)
functionKback to summary
private void functionK(byte[] m, byte[] c0, byte[] c1, byte[] result)
functionLback to summary
private void functionL(byte[] e0, byte[] e1, byte[] result)
genKeyPairback to summary
public void genKeyPair(byte[] h0, byte[] h1, byte[] sigma, byte[] h, SecureRandom random)

Generate key pairs - Secret key : (h0, h1, sigma) - Public key: h

Parameters
h0:byte[]

h0

h1:byte[]

h1

sigma:byte[]

sigma

h:byte[]

h

random:SecureRandom

Secure Random

getColumnFromCompactVersionback to summary
private int[] getColumnFromCompactVersion(int[] hCompact)
getSessionKeySizeback to summary
public int getSessionKeySize()
recomputeSyndromeback to summary
private void recomputeSyndrome(byte[] syndrome, int index, int[] h0Compact, int[] h1Compact, boolean isOne)
splitEBytesback to summary
private void splitEBytes(byte[] e, byte[] e0, byte[] e1)
thresholdback to summary
private int threshold(int hammingWeight, int r)
thresholdFromParametersback to summary
private static int thresholdFromParameters(int hammingWeight, double dm, double da, int min)
updateNewErrorIndexback to summary
private void updateNewErrorIndex(byte[] e, int index, boolean isOne)