diff options
| -rw-r--r-- | crypto/src/pqc/crypto/bike/BikeEngine.cs | 13 | ||||
| -rw-r--r-- | crypto/src/pqc/crypto/bike/BikeRing.cs | 7 |
2 files changed, 5 insertions, 15 deletions
diff --git a/crypto/src/pqc/crypto/bike/BikeEngine.cs b/crypto/src/pqc/crypto/bike/BikeEngine.cs index a6371b726..e50546b75 100644 --- a/crypto/src/pqc/crypto/bike/BikeEngine.cs +++ b/crypto/src/pqc/crypto/bike/BikeEngine.cs @@ -270,7 +270,7 @@ namespace Org.BouncyCastle.Pqc.Crypto.Bike bikeRing.DecodeBytes(h0, h0Element); ulong[] sElement = bikeRing.Create(); bikeRing.Multiply(c0Element, h0Element, sElement); - return Transpose(bikeRing.EncodeBits(sElement)); + return bikeRing.EncodeBitsTransposed(sElement); } private byte[] BGFDecoder(byte[] s, int[] h0Compact, int[] h1Compact) @@ -308,17 +308,6 @@ namespace Org.BouncyCastle.Pqc.Crypto.Bike return null; } - private byte[] Transpose(byte[] input) - { - byte[] output = new byte[r]; - output[0] = input[0]; - for (int i = 1; i < r; i++) - { - output[i] = input[r - i]; - } - return output; - } - private void BFIter(byte[] s, byte[] e, int T, int[] h0Compact, int[] h1Compact, int[] h0CompactCol, int[] h1CompactCol, uint[] black, uint[] gray, byte[] ctrs) { diff --git a/crypto/src/pqc/crypto/bike/BikeRing.cs b/crypto/src/pqc/crypto/bike/BikeRing.cs index ea023e004..7455fac06 100644 --- a/crypto/src/pqc/crypto/bike/BikeRing.cs +++ b/crypto/src/pqc/crypto/bike/BikeRing.cs @@ -82,12 +82,13 @@ namespace Org.BouncyCastle.Pqc.Crypto.Bike Debug.Assert((z[Size - 1] >> partialBits) == 0UL); } - internal byte[] EncodeBits(ulong[] x) + internal byte[] EncodeBitsTransposed(ulong[] x) { byte[] bs = new byte[m_bits]; - for (int i = 0; i < m_bits; ++i) + bs[0] = (byte)(x[0] & 1UL); + for (int i = 1; i < m_bits; ++i) { - bs[i] = (byte)((x[i >> 6] >> (i & 63)) & 1UL); + bs[m_bits - i] = (byte)((x[i >> 6] >> (i & 63)) & 1UL); } return bs; } |