phpseclib/phpseclib

Health v2 · maintenance only

Adoption not part of the score

5585 stars · 907 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

A MIT-licensed pure-PHP library providing implementations of SSH-2, SFTP, X.509/CSR/CRL/PFX/CMS, and a wide range of cryptographic primitives including RSA, ECDSA, Ed25519, AES, and ChaCha20-Poly1305. It requires no PHP extensions, optionally using OpenSSL, GMP, or libsodium for speed, with multiple LTS branches supporting PHP from 4.4 to 8.1+.

Use cases

• connect to ssh servers from php
• upload files over sftp in php
• encrypt and decrypt data with rsa in php
• generate and parse x509 certificates
• sign and verify jwt-like signatures with ed25519
• encrypt files with aes-gcm or chacha20-poly1305
• create certificate signing requests (csr)
• interoperate with openssl, java, or python crypto

When to choose

• you need SSH/SFTP or PKI functionality in PHP without relying on shell exec or extensions
• you need portability across shared hosts where openssl/gmp may be unavailable
• you need fine-grained control over crypto parameters like OAEP hashes or cipher modes
• you need to support old PHP versions via the 1.0/2.0/3.0 LTS branches

When to avoid

• you only need basic TLS/HTTPS - use curl or guzzle instead
• you need a full SSH client with terminal emulation or port forwarding - use openssh
• you need maximum crypto performance and can require the openssl extension directly
• you need languages other than PHP

Facets

library · maturity stable

cryptography ssh security serialization security developer-tools web-development php cross-platform ssh2 sftp x509 rsa aes pure-php pki asn1 elliptic-curves

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markdown · JSON · MCP: product_card(name="phpseclib/phpseclib")