Crate fedimint_threshold_crypto

A pairing-based threshold cryptosystem for collaborative decryption and signatures.

Re-exports

• pub use ff;
• pub use group;
• pub use pairing;

Modules

• error
  Crypto errors.
• poly
  Utilities for distributed key generation: uni- and bivariate polynomials and commitments.
• serde_impl
  Serialization and deserialization implementations for group and field elements.

Structs

• Ciphertext
  An encrypted message.
• DecryptionShare
  A decryption share. A threshold of decryption shares can be used to decrypt a message.
• G1Affine
  This is an element of $\mathbb{G}_1$ represented in the affine coordinate space. It is ideal to keep elements in this representation to reduce memory usage and improve performance through the use of mixed curve model arithmetic.
• G1Projective
  This is an element of $\mathbb{G}_1$ represented in the projective coordinate space.
• G2Affine
  This is an element of $\mathbb{G}_2$ represented in the affine coordinate space. It is ideal to keep elements in this representation to reduce memory usage and improve performance through the use of mixed curve model arithmetic.
• G2Projective
  This is an element of $\mathbb{G}_2$ represented in the projective coordinate space.
• PEngine
  A pairing::Engine for BLS12-381 pairing operations.
• PublicKey
  A public key.
• PublicKeySet
  A public key and an associated set of public key shares.
• PublicKeyShare
  A public key share.
• Scalar
  Represents an element of the scalar field $\mathbb{F}_q$ of the BLS12-381 elliptic curve construction.
• SecretKey
  A secret key; wraps a single prime field element. The field element is heap allocated to avoid any stack copying that result when passing SecretKeys between stack frames.
• SecretKeySet
  A secret key and an associated set of secret key shares.
• SecretKeyShare
  A secret key share.
• Signature
  A signature.
• SignatureShare
  A signature share.

Constants

• PK_SIZE
  The size of a key’s representation in bytes.
• SIG_SIZE
  The size of a signature’s representation in bytes.

Traits

• IntoScalar
  A conversion into an element of the field Scalar.

Functions

• hash_g2
  Returns a hash of the given message in G2.