Crate key_share

Key share of Threshold Signature Scheme (TSS)

TSS protocols often share the same structure of key share. Having a separate crate with definition of the key share struct help reusing the code, keeping different implementations compatible and interopable.

The crate provides DirtyCoreKeyShare that contains data such as: secret share, other signers commitments, public key and etc.

DirtyCoreKeyShare may contain any data, not necessarily consistent. TSS protocol implementations typically don’t want to handle inconsistent key shares and would rather assume that it’s valid. Valid<T> is a type-guard stating that the value T it holds was validated. So, Valid<DirtyCoreKeyShare> (or CoreKeyShare type alias) can be used to express that only valid key shares are accepted.

Modules

• trusted_dealerspof
  Trusted dealer

Structs

• DirtyCoreKeyShare
  Dirty (unvalidated) core key share
• DirtyKeyInfo
  Public Key Info
• InvalidCoreShare
  Error indicating that key share is not valid
• ReconstructErrorspof
  Error indicating that key reconstruction failed
• Valid
  Validated value
• ValidateError
  Validation error
• VssSetup
  Secret sharing setup of a key

Enums

• HdError
  Error related to HD key derivation

Traits

• Validate
  Represents a type that can be validated
• ValidateFromParts
  Represents a type that can be constructed and validated from Parts

Functions

• reconstruct_secret_keyspof
  Reconstructs a secret key from set of at least min_signers key shares

Type Aliases

• CoreKeyShare
  Core key share
• KeyInfo
  Public Key Info