Php/docs/function.ssh2-fingerprint

• PHP Manual
• SSH2 Functions
• Retrieve fingerprint of remote server

ssh2_fingerprint

(PECL ssh2 >= 0.9.0)

ssh2_fingerprint — Retrieve fingerprint of remote server

Description

ssh2_fingerprint ( resource $session [, int $flags = SSH2_FINGERPRINT_MD5 | SSH2_FINGERPRINT_HEX ] ) : string

Returns a server hostkey hash from an active session.

Parameters

session

An SSH connection link identifier, obtained from a call to ssh2_connect().

flags

flags may be either of SSH2_FINGERPRINT_MD5 or SSH2_FINGERPRINT_SHA1 logically ORed with SSH2_FINGERPRINT_HEX or SSH2_FINGERPRINT_RAW.

Return Values

Returns the hostkey hash as a string.

Examples

Example #1 Checking the fingerprint against a known value

<?php$known_host = '6F89C2F0A719B30CC38ABDF90755F2E4';$connection = ssh2_connect('shell.example.com', 22);$fingerprint = ssh2_fingerprint($connection,               SSH2_FINGERPRINT_MD5 | SSH2_FINGERPRINT_HEX);if ($fingerprint != $known_host) {  die("HOSTKEY MISMATCH!\n" .      "Possible Man-In-The-Middle Attack?");}?>