Crate tbs

Threshold Blind Signatures

This library implements an ad-hoc threshold blind signature scheme based on BLS signatures using the (unrelated) BLS12-381 curve.

Modules

• serde_impl

Structs

• AggregatePublicKey
• BlindedMessage
• BlindedSignature
• BlindedSignatureShare
• BlindingKey
• Message
• MessagePoint
  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.
• PubKeyPoint
  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.
• PublicKeyShare
• Scalar
  Represents an element of the scalar field $\mathbb{F}_q$ of the BLS12-381 elliptic curve construction.
• SecretKeyShare
• Signature

Functions

• aggregate_public_key_shares
• aggregate_signature_shares
  Combines the exact threshold of valid blinded signature shares to a blinded signature. The responsibility of verifying the shares and supplying exactly the necessary threshold of shares lies with the caller.
• blind_message
• sign_blinded_msg
• unblind_signature
• verify
• verify_blind_share
• verify_blinded_signature