How to encrypt PHP source code? PHP binary encryption and decryption solution _ PHP Tutorial

How to encrypt PHP source code? PHP binary encryption and decryption solutions. Share Two PHP source code encryption methods. this encryption method supports any PHP version. Note: the encrypted PHP code does not need to be decrypted by a third-party tool. you can directly run it as usual. Copy and share two PHP source code encryption methods. this encryption method supports any PHP version.

Note: the encrypted PHP code does not need to be decrypted by a third-party tool. you can directly run it as usual.

The code is as follows:

Function encode_file_contents ($ filename ){
$ Type = strtolower (substr (strrchr ($ filename, '.'), 1 ));
If ('php' = $ type & is_file ($ filename) & is_writable ($ filename) {// compress the code if the php file is writable.
$ Contents = file_get_contents ($ filename); // checks whether the file has been encoded.
$ Contents = php_strip_whitespace ($ filename );

// Remove the PHP header and tail identifiers
$ HeaderPos = strpos ($ contents ,' $ FooterPos = strrpos ($ contents, '?> ');
$ Contents = substr ($ contents, $ headerPos + 5, $ footerPos-$ headerPos );
$ Encode = base64_encode (gzdeflate ($ contents); // start encoding
$ Encode =' ";

Return file_put_contents ($ filename, $ encode );
}
Return false;
}

// Call a function
$ Filename = 'Dam. php ';
Encode_file_contents ($ filename );
Echo "OK, encryption complete! "
?>

Encryption Method 2:

The code is as follows:

Function RandAbc ($ length = "") {// returns a random string
$ Str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz ";
Return str_shuffle ($ str );
}

$ Filename = 'index. php'; // file to be encrypted
$ T_k1 = RandAbc (); // random key 1
$ T_k2 = RandAbc (); // random key 2
$ Vstr = file_get_contents ($ filename );
$ V1 = base64_encode ($ vstr );
$ C = strtr ($ v1, $ T_k1, $ T_k2); // replace the corresponding character with the key.
$ C = $ T_k1. $ T_k2. $ c;
$ Q1 = "O00O0O ";
$ Q2 = "O0O000 ";
$ Q3 = "O0OO00 ";
$ Q4 = "OO0O00 ";
$ Q5 = "OO0000 ";
$ Q6 = "O00OO0 ";
$ S = '$ '. $ q6. '= urldecode ("% 6E1% 7A % 62% 2F % 6D % 615% 5C % 76% 740% 6928% 2D % 70% 78% 75% 71% 2A6% 6C % 79% 6B % 72% 5F % 65% 68% 63% 73% 77% 6F4% 2B % 6637% 6A "); $ '. $ q1. '= $ '. $ q6. '{3 }. $ '. $ q6. '{6 }. $ '. $ q6. '{33 }. $ '. $ q6. '{30}; $ '. $ q3. '= $ '. $ q6. '{33 }. $ '. $ q6. '{10 }. $ '. $ q6. '{24 }. $ '. $ q6. '{10 }. $ '. $ q6. '{24}; $ '. $ q4. '= $ '. $ q3. '{0 }. $ '. $ q6. '{18 }. $ '. $ q6. '{3 }. $ '. $ q3. '{0 }. $ '. $ q3. '{1 }. $ '. $ q6. '{24}; $ '. $ q5. '= $ '. $ q6. '{7 }. $ '. $ q6. '{13}; $ '. $ q1 .'. = $ '. $ q6 . '{22 }. $ '. $ q6. '{36 }. $ '. $ q6. '{29 }. $ '. $ q6. '{26 }. $ '. $ q6. '{30 }. $ '. $ q6. '{32 }. $ '. $ q6. '{35 }. $ '. $ q6. '{26 }. $ '. $ q6. '{30}; eval ($ '. $ q1 .'("'. base64_encode ('$ '. $ q2. '= "'. $ c. '"; eval (\'?> \'. $ '. $ Q1. '($ '. $ q3. '($ '. $ q4. '($ '. $ q2. ', $ '. $ q5. '* 2), $ '. $ q4. '($ '. $ q2. ', $ '. $ q5. ', $ '. $ q5. '), $ '. $ q4. '($ '. $ q2. ', 0, $ '. $ q5 .'))));'). '"));';

$ S =' ';
// Echo $ s;
// Generate the encrypted php file
$ Fpp1 = fopen ('temp _ '. $ filename, 'w ');
Fwrite ($ fpp1, $ s) or die ('file writing error ');

?>

In fact, there are many PHP source code encryption methods, such as free micro-shield PHP encryption and online encryption by www.phpjm.net, which are more complex than phpjm.

++ ++ ++

In addition, share a PHP class that can encrypt and decrypt the text in binary format. the code is as follows:

The code is as follows:

Class text_auth
{
Var $ n_iter;

Function text_auth ()
{
$ This-> setIter (32 );
}

Function setIter ($ n_iter)
{
$ This-> n_iter = $ n_iter;
}

Function getIter ()
{
Return $ this-> n_iter;
}

Function encrypt ($ data, $ key)
{
$ N = $ this-> _ resize ($ data, 4 );

$ Data_long [0] = $ n;
$ N_data_long = $ this-> _ str2long (1, $ data, $ data_long );

$ N = count ($ data_long );
If ($ n & 1) = 1 ){
$ Data_long [$ n] = chr (0 );
$ N_data_long ++;
}

$ This-> _ resize ($ key, 16, true );
If (''= $ key)
$ Key = '000000 ';

$ N_key_long = $ this-> _ str2long (0, $ key, $ key_long );

$ Enc_data = '';
$ W = array (0, 0 );
$ J = 0;
$ K = array (0, 0, 0, 0 );
For ($ I = 0; $ I <$ n_data_long; ++ $ I ){
If ($ j + 4 <= $ n_key_long ){
$ K [0] = $ key_long [$ j];
$ K [1] = $ key_long [$ j + 1];
$ K [2] = $ key_long [$ j + 2];
$ K [3] = $ key_long [$ j + 3];
} Else {
$ K [0] = $ key_long [$ j % $ n_key_long];
$ K [1] = $ key_long [($ j + 1) % $ n_key_long];
$ K [2] = $ key_long [($ j + 2) % $ n_key_long];
$ K [3] = $ key_long [($ j + 3) % $ n_key_long];
}
$ J = ($ j + 4) % $ n_key_long;

$ This-> _ encipherLong ($ data_long [$ I], $ data_long [++ $ I], $ w, $ k );

$ Enc_data. = $ this-> _ long2str ($ w [0]);
$ Enc_data. = $ this-> _ long2str ($ w [1]);
}

Return $ enc_data;
}

Function decrypt ($ enc_data, $ key)
{
$ N_enc_data_long = $ this-> _ str2long (0, $ enc_data, $ enc_data_long );

$ This-> _ resize ($ key, 16, true );
If (''= $ key)
$ Key = '000000 ';

$ N_key_long = $ this-> _ str2long (0, $ key, $ key_long );

$ Data = '';
$ W = array (0, 0 );
$ J = 0;
$ Len = 0;
$ K = array (0, 0, 0, 0 );
$ Pos = 0;

For ($ I = 0; $ I <$ n_enc_data_long; $ I ++ = 2 ){
If ($ j + 4 <= $ n_key_long ){
$ K [0] = $ key_long [$ j];
$ K [1] = $ key_long [$ j + 1];
$ K [2] = $ key_long [$ j + 2];
$ K [3] = $ key_long [$ j + 3];
} Else {
$ K [0] = $ key_long [$ j % $ n_key_long];
$ K [1] = $ key_long [($ j + 1) % $ n_key_long];
$ K [2] = $ key_long [($ j + 2) % $ n_key_long];
$ K [3] = $ key_long [($ j + 3) % $ n_key_long];
}
$ J = ($ j + 4) % $ n_key_long;

$ This-> _ decipherLong ($ enc_data_long [$ I], $ enc_data_long [$ I + 1], $ w, $ k );

If (0 = $ I ){
$ Len = $ w [0];
If (4 <= $ len ){
$ Data. = $ this-> _ long2str ($ w [1]);
} Else {
$ Data. = substr ($ this-> _ long2str ($ w [1]), 0, $ len % 4 );
}
} Else {
$ Pos = ($ I-1) * 4;
If ($ pos + 4 <= $ len ){
$ Data. = $ this-> _ long2str ($ w [0]);

If ($ pos + 8 <= $ len ){
$ Data. = $ this-> _ long2str ($ w [1]);
} Elseif ($ pos + 4 <$ len ){
$ Data. = substr ($ this-> _ long2str ($ w [1]), 0, $ len % 4 );
}
} Else {
$ Data. = substr ($ this-> _ long2str ($ w [0]), 0, $ len % 4 );
}
}
}
Return $ data;
}

Function _ encipherLong ($ y, $ z, & $ w, & $ k)
{
$ Sum = (integer) 0;
$ Delta = 0x9E3779B9;
$ N = (integer) $ this-> n_iter;

While ($ n --> 0 ){
$ Y = $ this-> _ add ($ y,
$ This-> _ add ($ z <4 ^ $ this-> _ rshift ($ z, 5), $ z) ^
$ This-> _ add ($ sum, $ k [$ sum & 3]);
$ Sum = $ this-> _ add ($ sum, $ delta );
$ Z = $ this-> _ add ($ z,
$ This-> _ add ($ y <4 ^ $ this-> _ rshift ($ y, 5), $ y) ^
$ This-> _ add ($ sum, $ k [$ this-> _ rshift ($ sum, 11) & 3]);
}

$ W [0] = $ y;
$ W [1] = $ z;
}

Function _ decipherLong ($ y, $ z, & $ w, & $ k)
{
$ Sum = 0xC6EF3720;
$ Delta = 0x9E3779B9;
$ N = (integer) $ this-> n_iter;

While ($ n --> 0 ){
$ Z = $ this-> _ add ($ z,
-($ This-> _ add ($ y <4 ^ $ this-> _ rshift ($ y, 5), $ y) ^
$ This-> _ add ($ sum, $ k [$ this-> _ rshift ($ sum, 11) & 3]);
$ Sum = $ this-> _ add ($ sum,-$ delta );
$ Y = $ this-> _ add ($ y,
-($ This-> _ add ($ z <4 ^ $ this-> _ rshift ($ z, 5), $ z) ^
$ This-> _ add ($ sum, $ k [$ sum & 3]);
}

$ W [0] = $ y;
$ W [1] = $ z;
}

Function _ resize (& $ data, $ size, $ nonull = false)
{
$ N = strlen ($ data );
$ Nmod = $ n % $ size;
If (0 = $ nmod)
$ Nmod = $ size;

If ($ nmod> 0 ){
If ($ nonull ){
For ($ I = $ n; $ I <$ n-$ nmod + $ size; ++ $ I ){
$ Data [$ I] = $ data [$ I % $ n];
}
} Else {
For ($ I = $ n; $ I <$ n-$ nmod + $ size; ++ $ I ){
$ Data [$ I] = chr (0 );
}
}
}
Return $ n;
}

Function _ hex2bin ($ str)
{
$ Len = strlen ($ str );
Return pack ('H'. $ len, $ str );
}

Function _ str2long ($ start, & $ data, & $ data_long)
{
$ N = strlen ($ data );

$ Tmp = unpack ('n' * ', $ data );
$ J = $ start;

Foreach ($ tmp as $ value)
$ Data_long [$ j ++] = $ value;

Return $ j;
}

Function _ long2str ($ l)
{
Return pack ('N', $ l );
}

Function _ rshift ($ integer, $ n)
{
If (0 xffffffff <$ integer |-0 xffffffff> $ integer ){
$ Integer = fmod ($ integer, 0 xffffffff + 1 );
}

If (0x7fffffff <$ integer ){
$ Integer-= 0 xffffffff + 1.0;
} Elseif (-0x80000000> $ integer ){
$ Integer + = 0 xffffffff + 1.0;
}

If (0> $ integer ){
$ Integer & = 0x7fffffff;
$ Integer >>=$ n;
$ Integer | = 1 <(31-$ n );
} Else {
$ Integer >>=$ n;
}

Return $ integer;
}

Function _ add ($ i1, $ i2)
{
$ Result = 0.0;

Foreach (func_get_args () as $ value ){
If (0.0> $ value ){
$ Value-= 1.0 + 0 xffffffff;
}

$ Result + = $ value;
}

If (0 xffffffff <$ result |-0 xffffffff> $ result ){
$ Result = fmod ($ result, 0 xffffffff + 1 );
}

If (0x7fffffff <$ result ){
$ Result-= 0 xffffffff + 1.0;
} Elseif (-0x80000000> $ result ){
$ Result + = 0 xffffffff + 1.0;
}
Return $ result;
}
}
?>
The usage is as follows:
// Encryption process
View sourceprint?
$ Text_file = S_ROOT. './456. php ';
$ Str = @ file_get_contents ($ text_file );

Require_once S_ROOT. "./text_auth.php ";
$ Text_auth = new text_auth (64 );

$ Str = $ text_auth-> encrypt ($ str, "qianyunlai.com ");

$ Filename = S_ROOT. './789. php'; // the encrypted text is binary and cannot be viewed in a common text editor.
File_put_contents ($ filename, $ str );
// Decryption process
View sourceprint
? 01 $ text_file = S_ROOT. './789. php ';
$ Str = @ file_get_contents ($ text_file );

Require_once S_ROOT. "./text_auth.php ";
$ Text_auth = new text_auth (64 );

$ Str = $ text_auth-> decrypt ($ str, "qianyunlai.com ");

$ Filename = S_ROOT. './456. php ';
File_put_contents ($ filename, $ str );

Bytes. Note: the encrypted PHP code does not need to be decrypted by a third-party tool. you can directly run it as usual. Copy generation...