A PHP framework for managing Public Key Infrastructures. It comprises X.509 public key certificates, attribute certificates, certification requests and certification path validation.

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1.2.1 2024-03-30 18:03 UTC


Note The code in this framework is the same as the one available in https://github.com/sop, but modified to fulfil with the Spomky-Labs requirements. All credits go to the original developer

A PHP Framework

  • X.509 public key certificates, attribute certificates,
  • X.690 Abstract Syntax Notation One (ASN.1) Distinguished Encoding Rules (DER) encoding and decoding
  • X.501 ASN.1 types, X.520 attributes and DN parsing.
  • RFC 7468 textual encodings of cryptographic structures (PEM).
  • Various ASN.1 types for cryptographic applications.
  • Cryptography support for various PKCS applications.


  • PHP >=8.1
  • mbstring

The extension gmp or bcmath is highly recommended


This library is available on Github.

composer require spomky-labs/pki-framework


This project is licensed under the MIT License.