Module commonware_cryptography::bls12381::primitives::poly

Polynomial operations over the BLS12-381 scalar field.

Warning

The security of the polynomial operations is critical for the overall security of the threshold schemes. Ensure that the scalar field operations are performed over the correct field and that all elements are valid.

Structs

• Eval
  A polynomial evaluation at a specific index.
• Poly
  A polynomial that is using a scalar for the variable x and a generic element for the coefficients.

Functions

• new
  Returns a new scalar polynomial of the given degree where each coefficients is sampled at random using kernel randomness.
• new_from
  In the context of secret sharing, the threshold is the degree + 1.
• public
  Returns the public key of the polynomial (constant term).

Type Aliases

• Private
  Private polynomials are used to generate secret shares.
• Public
  Public polynomials represent commitments to secrets on a private polynomial.
• Signature
  Signature polynomials are used in threshold signing (where a signature is interpolated using at least threshold evaluations).