Generate a fingerprint from and RSA SSH public key

fingerprint.php

<?php

print "\n";

$rsa = file_get_contents('rsa.pub');
$ssh = file_get_contents('ssh.pub');

// For reference
print $rsa . "\n\n";
print $ssh . "\n\n";
print exec('ssh-keygen -lf ssh.pub') . "\n\n"; // What should be correct

// Get the middle part out, decode it, and hash it
$content = explode(' ', $ssh, 3);
print join(':', str_split(md5(base64_decode($content[1])), 2)) . "\n\n";

/* Output:

-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCbIEIZZ1TOwy4eJyk5XK5chARj
nGJnfvJUbDBrDuyYqPsAgX/uoHWV/T8XN80cwpTcLalfS2lYsBrEy75w4o2vfto6
VCIFKG2w5anABC0BVB52DBUGXp1x1gGU4RZ3VNdQAmeMaJijzoCpkRb6+uD9pw2w
rlnmSiNINdBXYmC2fwIDAQAB
-----END PUBLIC KEY-----

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQCbIEIZZ1TOwy4eJyk5XK5chARjnGJnfvJUbDBrDuyYqPsAgX/uoHWV/T8XN80cwpTcLalfS2lYsBrEy75w4o2vfto6VCIFKG2w5anABC0BVB52DBUGXp1x1gGU4RZ3VNdQAmeMaJijzoCpkRb6+uD9pw2wrlnmSiNINdBXYmC2fw== phpseclib-generated-key

1024 27:0a:59:be:74:ff:6d:11:0a:9a:b6:cf:fe:fd:dc:d1  phpseclib-generated-key (RSA)

27:0a:59:be:74:ff:6d:11:0a:9a:b6:cf:fe:fd:dc:d1
^ WIN!
*/

ssh.pub

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQCbIEIZZ1TOwy4eJyk5XK5chARjnGJnfvJUbDBrDuyYqPsAgX/uoHWV/T8XN80cwpTcLalfS2lYsBrEy75w4o2vfto6VCIFKG2w5anABC0BVB52DBUGXp1x1gGU4RZ3VNdQAmeMaJijzoCpkRb6+uD9pw2wrlnmSiNINdBXYmC2fw== phpseclib-generated-key