X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=include%2Fcrypto.php;h=f5163a9dacbeb2bb8ccf8b3be23ff6de27a62546;hb=1d4de969603906646de7a0015346f6fdadd39a89;hp=999b48be4d6d6bc8988506fcc5f314f89ca93d2c;hpb=0d9d576aa642e02eb8673aa20bdf4b6a18ae6bc3;p=friendica.git

diff --git a/include/crypto.php b/include/crypto.php
index 999b48be4d..f5163a9dac 100644
--- a/include/crypto.php
+++ b/include/crypto.php
@@ -3,19 +3,20 @@
 require_once('library/ASNValue.class.php');
 require_once('library/asn1.php');
 
+// supported algorithms are 'sha256', 'sha1'
 
-function rsa_sign($data,$key) {
+function rsa_sign($data,$key,$alg = 'sha256') {
 
 	$sig = '';
-	if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
-		openssl_sign($data,$sig,$key,'sha256');
+	if (version_compare(PHP_VERSION, '5.3.0', '>=') || $alg === 'sha1') {
+		openssl_sign($data,$sig,$key,(($alg == 'sha1') ? OPENSSL_ALGO_SHA1 : $alg));
     }
     else {
 		if(strlen($key) < 1024 || extension_loaded('gmp')) {
 			require_once('library/phpsec/Crypt/RSA.php');
 			$rsa = new CRYPT_RSA();
 			$rsa->signatureMode = CRYPT_RSA_SIGNATURE_PKCS1;
-			$rsa->setHash('sha256');
+			$rsa->setHash($alg);
 			$rsa->loadKey($key);
 			$sig = $rsa->sign($data);
 		}
@@ -27,17 +28,17 @@ function rsa_sign($data,$key) {
 	return $sig;
 }
 
-function rsa_verify($data,$sig,$key) {
+function rsa_verify($data,$sig,$key,$alg = 'sha256') {
 
-	if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
-		$verify = openssl_verify($data,$sig,$key,'sha256');
+	if (version_compare(PHP_VERSION, '5.3.0', '>=') || $alg === 'sha1') {
+		$verify = openssl_verify($data,$sig,$key,(($alg == 'sha1') ? OPENSSL_ALGO_SHA1 : $alg));
     }
     else {
 		if(strlen($key) <= 300 || extension_loaded('gmp')) {
 			require_once('library/phpsec/Crypt/RSA.php');
 			$rsa = new CRYPT_RSA();
 			$rsa->signatureMode = CRYPT_RSA_SIGNATURE_PKCS1;
-			$rsa->setHash('sha256');
+			$rsa->setHash($alg);
 			$rsa->loadKey($key);
 			$verify = $rsa->verify($data,$sig);
 		}
@@ -186,6 +187,7 @@ function salmon_key($pubkey) {
 
 
 if(! function_exists('aes_decrypt')) {
+// DEPRECATED IN 3.4.1
 function aes_decrypt($val,$ky)
 {
     $key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
@@ -199,6 +201,7 @@ function aes_decrypt($val,$ky)
 
 
 if(! function_exists('aes_encrypt')) {
+// DEPRECATED IN 3.4.1
 function aes_encrypt($val,$ky)
 {
     $key="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
@@ -210,7 +213,6 @@ function aes_encrypt($val,$ky)
     return mcrypt_encrypt($enc, $key, $val, $mode, mcrypt_create_iv( mcrypt_get_iv_size($enc, $mode), MCRYPT_DEV_URANDOM));
 }} 
 
-
 function pkcs5_pad ($text, $blocksize)
 {
     $pad = $blocksize - (strlen($text) % $blocksize);
@@ -224,3 +226,38 @@ function pkcs5_unpad($text)
     if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) return false;
     return substr($text, 0, -1 * $pad);
 } 
+
+
+function new_keypair($bits) {
+
+	$openssl_options = array(
+		'digest_alg'       => 'sha1',
+		'private_key_bits' => $bits,
+		'encrypt_key'      => false 
+	);
+
+	$conf = get_config('system','openssl_conf_file');
+	if($conf)
+		$openssl_options['config'] = $conf;
+	
+	$result = openssl_pkey_new($openssl_options);
+
+	if(empty($result)) {
+		logger('new_keypair: failed');
+		return false;
+	}
+
+	// Get private key
+
+	$response = array('prvkey' => '', 'pubkey' => '');
+
+	openssl_pkey_export($result, $response['prvkey']);
+
+	// Get public key
+	$pkey = openssl_pkey_get_details($result);
+	$response['pubkey'] = $pkey["key"];
+
+	return $response;
+
+}
+