- "ext-mcrypt": "Install the Mcrypt extension in order to speed up a wide variety of cryptographic operations.",
- "pear-pear/PHP_Compat": "Install PHP_Compat to get phpseclib working on PHP < 4.3.3."
+ "ext-libsodium": "SSH2/SFTP can make use of some algorithms provided by the libsodium-php extension.",
+ "ext-mcrypt": "Install the Mcrypt extension in order to speed up a few other cryptographic operations.",
+ "ext-openssl": "Install the OpenSSL extension in order to speed up a wide variety of cryptographic operations."