danog/tgseclib (packagist): PHP Secure Communications Library (+Telegram-specific AES IGE primitives) - Pure-PHP implementations of RSA, AES, SSH2, SFTP, X.509 etc.
Keywords: security|cryptography|ssh|encryption|blowfish|crypto|signature|signing|rsa|aes|sftp|x509|x.509|asn1|asn.1|BigInteger|twofish