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Modernize sha1 and md5 password hash and check functions: remove unnecessary pack, no longer use very old fallbacks, and use random_salt

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Bert Van de Poel 2021-04-24 03:34:42 +02:00 committed by Deon George
parent 1a09e4ff3c
commit fe3798f8ec
1 changed files with 21 additions and 51 deletions
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72
lib/functions.php
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@ -2230,7 +2230,7 @@ function pla_password_hash($password_clear,$enc_type) {
break; break;
case 'md5': case 'md5':
$new_value = sprintf('{MD5}%s',base64_encode(pack('H*',md5($password_clear)))); $new_value = sprintf('{MD5}%s',base64_encode(md5($password_clear, true)));
break; break;
case 'md5crypt': case 'md5crypt':
@ -2242,25 +2242,13 @@ function pla_password_hash($password_clear,$enc_type) {
break; break;
case 'sha': case 'sha':
# Use php 4.3.0+ sha1 function, if it is available. $new_value = sprintf('{SHA}%s',base64_encode(sha1($password_clear, true)));
if (function_exists('sha1'))
$new_value = sprintf('{SHA}%s',base64_encode(pack('H*',sha1($password_clear))));
elseif (function_exists('mhash'))
$new_value = sprintf('{SHA}%s',base64_encode(mhash(MHASH_SHA1,$password_clear)));
else
error(_('Your PHP install does not have the mhash() function. Cannot do SHA hashes.'),'error','index.php');
break; break;
case 'ssha': case 'ssha':
if (function_exists('mhash') && function_exists('mhash_keygen_s2k')) { $salt = hex2bin(random_salt(8));
mt_srand((double)microtime()*1000000); $new_value = sprintf('{SSHA}%s',base64_encode(sha1($password_clear.$salt, true).$salt));
$salt = mhash_keygen_s2k(MHASH_SHA1,$password_clear,substr(pack('h*',md5(mt_rand())),0,8),4);
$new_value = sprintf('{SSHA}%s',base64_encode(mhash(MHASH_SHA1,$password_clear.$salt).$salt));
} else {
error(_('Your PHP install does not have the mhash() or mhash_keygen_s2k() function. Cannot do S2K hashes.'),'error','index.php');
}
break; break;
@ -2278,14 +2266,8 @@ function pla_password_hash($password_clear,$enc_type) {
case 'smd5': case 'smd5':
if (function_exists('mhash') && function_exists('mhash_keygen_s2k')) { $salt = hex2bin(random_salt(8));
mt_srand((double)microtime()*1000000); $new_value = sprintf('{SMD5}%s',base64_encode(md5($password_clear.$salt, true).$salt));
$salt = mhash_keygen_s2k(MHASH_MD5,$password_clear,substr(pack('h*',md5(mt_rand())),0,8),4);
$new_value = sprintf('{SMD5}%s',base64_encode(mhash(MHASH_MD5,$password_clear.$salt).$salt));
} else {
error(_('Your PHP install does not have the mhash() or mhash_keygen_s2k() function. Cannot do S2K hashes.'),'error','index.php');
}
break; break;
@ -2388,22 +2370,16 @@ function password_check($cryptedpassword,$plainpassword,$attribute='userpassword
switch($cypher) { switch($cypher) {
# SSHA crypted passwords # SSHA crypted passwords
case 'ssha': case 'ssha':
# Check php mhash support before using it $hash = base64_decode($cryptedpassword);
if (function_exists('mhash')) {
$hash = base64_decode($cryptedpassword);
# OpenLDAP uses a 4 byte salt, SunDS uses an 8 byte salt - both from char 20. # OpenLDAP uses a 4 byte salt, SunDS uses an 8 byte salt - both from char 20.
$salt = substr($hash,20); $salt = substr($hash,20);
$new_hash = base64_encode(mhash(MHASH_SHA1,$plainpassword.$salt).$salt); $new_hash = base64_encode(sha1($plainpassword.$salt, true).$salt);
if (strcmp($cryptedpassword,$new_hash) == 0) if (strcmp($cryptedpassword,$new_hash) == 0)
return true; return true;
else else
return false; return false;
} else {
error(_('Your PHP install does not have the mhash() function. Cannot do SHA hashes.'),'error','index.php');
}
break; break;
@ -2426,20 +2402,14 @@ function password_check($cryptedpassword,$plainpassword,$attribute='userpassword
# Salted MD5 # Salted MD5
case 'smd5': case 'smd5':
# Check php mhash support before using it $hash = base64_decode($cryptedpassword);
if (function_exists('mhash')) { $salt = substr($hash,16);
$hash = base64_decode($cryptedpassword); $new_hash = base64_encode(md5($plainpassword.$salt).$salt, true);
$salt = substr($hash,16);
$new_hash = base64_encode(mhash(MHASH_MD5,$plainpassword.$salt).$salt);
if (strcmp($cryptedpassword,$new_hash) == 0) if (strcmp($cryptedpassword,$new_hash) == 0)
return true; return true;
else else
return false; return false;
} else {
error(_('Your PHP install does not have the mhash() function. Cannot do SHA hashes.'),'error','index.php');
}
break; break;