Module grin_core::libtx::aggsig

Aggregated Signature functions used in the creation of Grin transactions. This module interfaces into the underlying Rust Aggsig library

Functions

• add_signatures
  Adds signatures
• calculate_partial_sig
  Calculates a partial signature given the signer’s secure key, the sum of all public nonces and (optionally) the sum of all public keys.
• create_secnonce
  Creates a new secure nonce (as a SecretKey), guaranteed to be usable during aggsig creation.
• sign_from_key_id
  Creates a single-signer aggsig signature from a key id. Generally, this function is used to create transaction kernel signatures for coinbase outputs. Returns Ok(Signature) if the signature is valid, or a Signature ErrorKind otherwise
• sign_single
  Just a simple sig, creates its own nonce if not provided
• sign_with_blinding
  Just a simple sig, creates its own nonce, etc
• subtract_signature
  Subtract a partial signature from a completed signature see https://github.com/mimblewimble/rust-secp256k1-zkp/blob/e9e4f09bd0c85da914774a52219457ba10ac3e57/src/aggsig.rs#L267
• verify_batch
  Verify a batch of signatures.
• verify_completed_sig
  Verifies a completed (summed) signature, which must include the message and pubkey sum values that are used during signature creation time to create ‘e’ Returns Ok(()) if the signature is valid, or a Signature ErrorKind otherwise
• verify_partial_sig
  Verifies a partial signature from a public key. All nonce and public key sum values must be identical to those provided in the call to calculate_partial_sig. Returns Result::Ok if the signature is valid, or a Signature ErrorKind otherwise
• verify_single
  Verifies an aggsig signature
• verify_single_from_commit
  Simple verification a single signature from a commitment. The public key used to verify the signature is derived from the commit. Returns Ok(()) if the signature is valid, or a Signature ErrorKind otherwise