ecdsa

Package ecdsa provides secp256k1-optimized ECDSA signing and verification.

This package provides data structures and functions necessary to produce and verify deterministic canonical signatures in accordance with RFC6979 and BIP0062, optimized specifically for the secp256k1 curve using the Elliptic Curve Digital Signature Algorithm (ECDSA), as defined in FIPS 186-3. See https://www.secg.org/sec2-v2.pdf (also found here at sec2-v2.pdf) for details on the secp256k1 standard.

It also provides functions to parse and serialize the ECDSA signatures with the more strict Distinguished Encoding Rules (DER) of ISO/IEC 8825-1 and some additional restrictions specific to secp256k1.

In addition, it supports a custom "compact" signature format which allows efficient recovery of the public key from a given valid signature and message hash combination.

A comprehensive suite of tests is provided to ensure proper functionality.

License

Package ecdsa is licensed under the copyfree ISC License.