Libraries tagged by ECDSA

ECDSA signature value object with DER/JWS raw format conversion and curve-order validation. For Cloud KMS/HSM-based JWT signing where OpenSSL/KMS returns DER but JWT (RFC 7518) requires raw format.

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fast openSSL-compatible implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA)

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ECDSA (Elliptic Curves) lib for PHP

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Byte Federal's fast authentication system built on bitcoin cryptographic standards for Laravel applications.

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secp256k1 elliptic-curve arithmetic + RFC 6979 deterministic ECDSA sign / verify / recover in pure PHP on ext-gmp.

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Standalone Ethereum / EVM SDK for PHP — Keccak-256, secp256k1 + ECDSA (RFC 6979), RLP, EIP-1559 offline signing, ABI calldata encoder, and an ethers.js-style JSON-RPC client. Umbrella package pulling the full pure-PHP EVM stack.

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EIP-1559 (Type-2) raw transaction assembly + RFC 6979 deterministic ECDSA signing in pure PHP. Address derivation from a secp256k1 private key.

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PHP Elliptic Curve Cryptography library

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PHP Bitcoin library with functions for transactions, signatures, serialization, Random/Deterministic ECDSA keys, blocks, RPC bindings

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PHP Bitcoin library with functions for transactions, signatures, serialization, Random/Deterministic ECDSA keys, blocks, RPC bindings

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Spec-compliant Universal Commerce Protocol (UCP) profile generator for Magento 2. Generates /.well-known/ucp at protocol version 2026-04-08 with ECDSA P-256 signing keys, declared capabilities, and proper cache headers.

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ECDSA signers for lcobucci/jwt

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A PHP 8.1+ JWT library (HMAC, RSA, ECDSA, EdDSA, RSASSA-PSS) with JWK/JWKS support, PSR-6 cached key sets, and built-in algorithm-confusion and alg=none protection.

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PHP Elliptic Curve Cryptography library

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PHP Elliptic Curve Cryptography library

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