Edit report at https://bugs.php.net/bug.php?id=46149&edit=1
ID: 46149
Comment by: menkaur at gmail dot com
Reported by: hanbsd at 163 dot com
Summary: openssl_sign() can't generate the signature where
sign DSA Private key
Status: Bogus
Type: Bug
Package: OpenSSL related
Operating System: Centos 5.0
PHP Version: 5.2.6
Block user comment: N
Private report: N
New Comment:
I'm getting this bug in version 5.2.17; openssl_sign silently fails, signature
is empty
Here's the code to reproduce it:
$priv_key = '-----BEGIN DSA PRIVATE KEY-----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-----END DSA PRIVATE KEY-----
';
$pkeyid = openssl_get_privatekey($priv_key);
if(empty($pkeyid)){
die("Can't load key id");
}
$data = $_GET['i'];
// compute signature
if(!openssl_sign($data, $signature, $pkeyid,OPENSSL_ALGO_SHA1)){
echo "Failed to sign data: $data";
}
// free the key from memory
openssl_free_key($pkeyid);
if(empty($signature)){
echo "signature empty";
}
echo base64_encode($signature);
Previous Comments:
------------------------------------------------------------------------
[2008-11-18 02:18:03] paj...@php.net
Duplicate of #41033 (which is fixed)
------------------------------------------------------------------------
[2008-11-07 07:48:21] t dot dettrick at its dot uq dot edu dot au
This is related to Bug #41033 - PHP doesn't support signing or verification
with DSA, because it requires EVP_dss1() instead of EVP_sha1(), and the patch
to provide a constant for that hash algorithm hasn't been merged yet.
------------------------------------------------------------------------
[2008-09-22 11:45:57] hanbsd at 163 dot com
Description:
------------
I create private key with
$configargs = array(
"digest_alg" => "sha1",
"private_key_bits" => 1024,
"private_key_type" => OPENSSL_KEYTYPE_DSA,
"encrypt_key" => false
);
But I can not get signature by openssl_sign($data, $signature, $key).
Then I use openssl in shell
#openssl dgst -dss1 -sign id_dsa foo.sha1 > sigfile.bin
openssl create a signature file : sigfile.bin
#openssl dgst -dss1 -verify id_dsa.pub -signature sigfile.bin foo.sha1
openssl print: "Verified OK"
It looks something bug of PHP function openssl_sign()
Reproduce code:
---------------
$data = "sfsdfsdfs";
$fp = fopen("/home/id_dsa", "r");
$pkey = fread($fp, 8192);
fclose($fp);
$key = openssl_get_privatekey($pkey);
openssl_sign($data, $signature, $key);
openssl_free_key($key);
echo $signature;
Expected result:
----------------
openssl_sign() can create signature
Actual result:
--------------
openssl_sign() can not create signature , $signature is empty
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=46149&edit=1
