simplito/elliptic-php
Pure-PHP elliptic curve cryptography library for PHP. Provides ECDSA signing/verification and key generation on common curves (incl. secp256k1) with utilities for points, keys, and encodings—useful for blockchain, JWT, and other crypto workflows without extensions.
Fast, general Elliptic Curve Cryptography library. Supports curves used in Bitcoin, Ethereum and other cryptocurrencies (secp256k1, ed25519, ..)
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