Это основано на Преобразовании открытого ключа RSA, сгенерированного OpenSSL, в формат OpenSSH (PHP) .Спасибо Шеврон .
<?php
$rsaKey = openssl_pkey_new(array(
'private_key_bits' => 1024,
'private_key_type' => OPENSSL_KEYTYPE_RSA));
$privKey = openssl_pkey_get_private($rsaKey);
openssl_pkey_export($privKey, $pem); //Private Key
$pubKey = sshEncodePublicKey($rsaKey); //Public Key
$umask = umask(0066);
file_put_contents('/tmp/test.rsa', $pem); //save private key into file
file_put_contents('/tmp/test.rsa.pub', $pubKey); //save public key into file
print "Private Key:\n $pem \n\n";
echo "Public key:\n$pubKey\n\n";
function sshEncodePublicKey($privKey) {
$keyInfo = openssl_pkey_get_details($privKey);
$buffer = pack("N", 7) . "ssh-rsa" .
sshEncodeBuffer($keyInfo['rsa']['e']) .
sshEncodeBuffer($keyInfo['rsa']['n']);
return "ssh-rsa " . base64_encode($buffer);
}
function sshEncodeBuffer($buffer) {
$len = strlen($buffer);
if (ord($buffer[0]) & 0x80) {
$len++;
$buffer = "\x00" . $buffer;
}
return pack("Na*", $len, $buffer);
}
?>