Lattigo v2.1.0

Added

• BFV : special-purpose plaintext types (PlaintextRingT or PlaintextMul) for optimized ct-pt operations. See bfv/encoder.go and bfv/plaintext.go.
• BFV : allocation-free Encoder methods
• RING : GenNTTPrimes now takes the value Nth (for Nth primitive root) as input rather than logN.

Changed

• BFV : the Encoder.DecodeUint64 and Encoder.DecodeInt64 methods now take the output slice as argument.
• CKKS : API of Evaluator.RotateColumns becomes Evaluator.Rotate
• CKKS : the change of variable in Evaluator.EvaluateCheby isn't done automatically anymore and the user must do it before calling the function to ensure correctness.
• CKKS : when encoding, the number of slots must now be given in log2 basis. This is to prevent errors that would induced by zero values or non power of two values.
• CKKS : new encoder API : EncodeAtLvlNew and EncodeNTTAtLvlNew, which allow a user to encode a plaintext at a specific level.

Removed

• CKKS : removed method Evaluator.EvaluateChebySpecial
• BFV : removed QiMul field from bfv.Parameters. It is now automatically generated.