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Own Crypt Library. Independence of dovecotpw/doveadm pw

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added some structure and tried to impelement CRYPT.

Dovecots Version is here (crypt_generate() ) http://hg.dovecot.org/dovecot-1.2/file/84373d238073/src/auth/password-scheme.c

Can someone help me with creating the lib?



git-svn-id: https://svn.code.sf.net/p/postfixadmin/code/trunk@928 a1433add-5e2c-0410-b055-b7f2511e0802
This commit is contained in:
Valkum
2010-12-31 04:38:00 +00:00
parent f3450acd0a
commit 3c7d04e92a
3 changed files with 175 additions and 0 deletions
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scripts/snippets/dovecot_crypt.php Normal file
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<?php
define('SHA1_RESULTLEN', (160/8));
define('SHA256_RESULTLEN', (256 / 8));
define('CRAM_MD5_CONTEXTLEN', 32);
define('MD5_RESULTLEN', (128/8));
define('MD4_RESULTLEN', (128/8));
define('LM_HASH_SIZE', 16);
define('NTLMSSP_HASH_SIZE', 16);
class DovecotCrypt extends Crypt {
private $salt_chars = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
/**
* Array
* Crypt type and which function handles it.
* array('alogrithm' => array('encoding', 'length', 'verify', 'function'))
*/
public $password_schemes = array(
'CRYPT' => array('NONE', 0, 'crypt_verify', 'crypt_generate'),
'MD5' => array('NONE', 0, 'md5_verify', 'md5_generate'),
//'MD5-CRYPT' => array('NONE', 0, 'md5_crypt_verify', 'md5_crypt_generate'),
'SHA' => array('BASE64', SHA1_RESULTLEN, NULL, 'sha1_generate'),
'SHA1' => array('BASE64', SHA1_RESULTLEN, NULL, 'sha1_generate'),
//'SHA256' => array('BASE64', SHA256_RESULTLEN, NULL, 'sha256_generate'),
//'SMD5' => array('BASE64', 0, 'smd5_verify', 'smd5_generate'),
//'SSHA' => array('BASE64', 0, 'ssha_verify', 'ssha_generate'),
//'SSHA256' => array('BASE64', 0, 'ssha356_verify', 'ssha256_generate'),
'PLAIN' => array('NONE', 0, NULL, 'plain_generate'),
'CLEARTEXT' => array('NONE', 0, NULL, 'plain_generate'),
'CRAM-MD5' => array('HEX', CRAM_MD5_CONTEXTLEN, NULL, 'cram_md5_generate'),
//'HMAC-MD5' => array('HEX', CRAM_MD5_CONTEXTLEN, NULL, 'cram_md5_generate'),
//'DIGEST-MD5' => array('HEX', MD5_RESULTLEN, NULL, 'digest_md5_generate'),
//'PLAIN-MD4' => array('HEX', MD4_RESULTLEN, NULL, 'plain_md4_generate'),
//'PLAIN-MD5' => array('HEX', MD5_RESULTLEN, NULL, 'plain_md5_generate'),
//'LDAP-MD5' => array('BASE64', MD5_RESULTLEN, NULL, 'plain_md5_generate'),
//'LANMAN' => array('HEX', LM_HASH_SIZE, NULL, 'lm_generate'),
//'NTLM' => array('HEX', NTLMSSP_HASH_SIZE, NULL, 'ntlm_generate'),
//'OTP' => array('NONE', 0, 'otp_verify', 'otp_generate'),
//'SKEY' => array('NONE', 0, 'otp_verify', 'skey_generate'),
//'RPA' => array('HEX', MD5_RESULTLEN, NULL, 'rpa_generate'),
);
public function crypt($algorithm) {
if( !array_key_exists($algorithm, $this->password_schemes) ) {
$this->errormsg[] = "This password scheme isn't supported. Check our Wiki!";
return false;
}
$scheme = $this->password_schemes[$algorithm];
$func = '__'.$scheme[3];
$this->password = $this->$func($this->plain, $this->size);
//$this->plain = '';
}
public function verify($algorithm, $password) {
if( !array_key_exists($algorithm, $this->password_schemes) ) {
$this->errormsg[] = "This password scheme isn't supported. Check our Wiki!";
return false;
}
$scheme = $this->password_schemes[$algorithm];
if($scheme[2] == NULL) {
$this->errormsg[] = "This password scheme doesn't support verification";
return false;
}
$func = '__'.$scheme[2];
return $this->$func($this->plain, $password, $this->size);
}
private function __crypt_verify($plaintext, $password) {
$password = substr($password, 0, $this->size);
$crypted = crypt($plaintext, $password);
return strcmp($crypted, $password) == 0;
}
private function __crypt_generate($plaintext, &$size) {
$salt = $this->__random_fill(2);
$salt[0] = $this->salt_chars[$salt[0] % (strlen($this->salt_chars)-1)];
$salt[1] = $this->salt_chars[$salt[1] % (strlen($this->salt_chars)-1)];
$salt[2] = '\0';
$password = strtoupper(crypt($plaintext, $salt));
$size = strlen($password);
return $password;
}
private function __md5_generate() {
}
private function __sha1_generate() {
}
private function __plain_generate() {
}
private function __cram_md5_generate() {
}
private function __random_fill($size) {
$pos = 0;
$tmp = array();
while( $pos <= $size ) {
$rand = mt_rand();
$rand_l = strlen((string)$rand);
$tmp[$pos] = substr((string)$rand, mt_rand(0, $rand_l - 1), 1);
$pos++;
}
return join("", $tmp);
}
}