poly library

Classes

Poly

Functions

cbd(Poly r, Uint8List buf) → void
Implements the Centered Binomial Distribution for η=2.
polyadd(Poly a, Poly b) → Poly
Component-wise addition of two polynomials.
polybasemul(Poly a, Poly b) → Poly
Component-wise multiplication of two polynomials in Montgomery domain.
polycompress(Poly a) → Uint8List
Compresses a polynomial into a compact byte array using 3 bits per coefficient.
polydecompress(Uint8List r) → Poly
Decompresses a polynomial from its compressed byte array representation.
polyfrombytes(Uint8List r) → Poly
Deserializes a polynomial from a byte array using 12-bit encoding.
polyfrommsg(Poly p, Uint8List msg) → void
Converts a message (byte array) into a polynomial. Each bit of the message is mapped to a coefficient in the polynomial. If the bit is 1, the corresponding coefficient is set to KYBER_Q/2; otherwise, 0.
polygetnoise(Poly r, Uint8List seed, int nonce) → void
Generates a pseudorandom polynomial from a seed and nonce using SHAKE128 and CBD.
polyinvntttomont(Poly a) → void
Applies the inverse NTT transform (returning the polynomial in standard representation).
polyntt(Poly a) → void
Applies the NTT transform to a polynomial.
polyreduce(Poly a) → Poly
Reduces all coefficients of a polynomial modulo KYBER_Q.
polysub(Poly a, Poly b) → Poly
Component-wise subtraction of two polynomials.
polytobytes(Poly a) → Uint8List
Serializes a polynomial into a byte array using 12-bit encoding per coefficient.
polytomsg(Uint8List msg, Poly p) → void
Converts a polynomial into a message (byte array). Groups of 8 coefficients are converted back into a single byte.
polyuniform(Poly a, Uint8List seed, int nonce) → void
Generates a uniform polynomial from a seed and nonce using SHAKE128.