Doc #72897 [NEW]: The client to server MAC algorithm list is truncated

From: benjamin dot cohen-solal at dalenys dot com Operating system: Debian 8 PHP version: 5.6.25 Package: ssh2 Bug Type: Documentation Problem Bug description:The client to server MAC algorithm list is truncated Description: ------------ When I send the following algorithm list in client to server / mac field: hmac-sha2-256,hmac-sha2-512,umac-64@openssh.com I receive the error message: ben@debian:~$ php script.php PHP Warning: ssh2_connect(): Error starting up SSH connection(-5): Unable to exchange encryption keys in /home/ben/scriptphp on line 3 PHP Stack trace: PHP 1. {main}() /home/ben/script.php:0 PHP 2. ssh2_connect() /home/ben/script.php:3 I successfully configured a ProFTPd server on my server on port 443 and when I check its logs, I get the following error: 2016-08-17 14:53:36,048 mod_sftp/0.9.9[9930]: no shared client-to-server MAC algorithm found (client sent 'hmcom', server sent 'hmac-sha2-256,hmac-sha2-512,umac-64@openssh.com') I never sent the "hmcom" value, it seems to have truncated the 2 first letters and the 3 last ones from my algorithm list: hmac-sha2-256,hmac-sha2-512,umac-64@openssh.com because for example if I changed the ".com" into ".cot", I get the error: 2016-08-17 14:53:36,048 mod_sftp/0.9.9[9930]: no shared client-to-server MAC algorithm found (client sent 'hmcot', server sent 'hmac-sha2-256,hmac-sha2-512,umac-64@openssh.com') When I use the binary file sftp with shell_exec as following: sftp -P 443 myhost.com All is OK --- From manual page: http://www.php.net/function.ssh2-connect --- Test script: --------------- <?php ssh2_connect("myhost.com", 443, array( "client_to_server" => array( "mac" => 'hmac-sha2-256,hmac-sha2-512,umac-64@openssh.com' ), ) ); Expected result: ---------------- I don't expect any error message Actual result: -------------- I get the following error: PHP Warning: ssh2_connect(): Error starting up SSH connection(-5): Unable to exchange encryption keys in /home/ben/script.php on line 3 PHP Stack trace: PHP 1. {main}() /home/bcohen/toto.php:0 PHP 2. ssh2_connect() /home/bcohen/toto.php:3 PHP Warning: ssh2_connect(): Unable to connect to myhost.com in /home/ben/script.php on line 3 PHP Stack trace: PHP 1. {main}() /home/ben/script.php:0 PHP 2. ssh2_connect() /home/ben/script.php:3 -- Edit bug report at https://bugs.php.net/bug.php?id=72897&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=72897&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=72897&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=72897&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=72897&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=72897&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=72897&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=72897&r=needscript Try newer version: https://bugs.php.net/fix.php?id=72897&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=72897&r=support Expected behavior: https://bugs.php.net/fix.php?id=72897&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=72897&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=72897&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=72897&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=72897&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=72897&r=dst IIS Stability: https://bugs.php.net/fix.php?id=72897&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=72897&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=72897&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=72897&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=72897&r=mysqlcfg