Decryption-How is the PHP7 encryption method of this conversion different from the results of C #?

Thank you.

As below, there is a C # encryption and decryption method, I wrote a PHP7 implementation. But the result of the decryption and C # is completely different, where is wrong? I am a rookie, thank you.

C

public static string Decrypt (String Text, String sKey) {DESCryptoServiceProvider Provider = new DESCRYP            Toserviceprovider ();            int num = TEXT.LENGTH/2;            byte[] buffer = new Byte[num];                for (int i = 0; i < num; i++) {int num3 = Convert.ToInt32 (text.substring (i * 2, 2), 0x10);            Buffer[i] = (byte) num3; } provider. Key = Encoding.ASCII.GetBytes (FormsAuthentication.HashPasswordForStoringInConfigFile (SKey, "MD5").            Substring (0, 8)); PROVIDER.IV = Encoding.ASCII.GetBytes (FormsAuthentication.HashPasswordForStoringInConfigFile (SKey, "MD5").            Substring (0, 8));            MemoryStream stream = new MemoryStream (); CryptoStream stream2 = new CryptoStream (stream, provider.            CreateDecryptor (), cryptostreammode.write); Stream2. Write (buffer, 0, buffer.            Length); Stream2.            FlushFinalBlock (); Return Encoding.Default.GetString (stream.    ToArray ());    public static string Encrypt (String Text, String sKey) {DESCryptoServiceProvider provider            = new DESCryptoServiceProvider ();            byte[] bytes = Encoding.Default.GetBytes (Text); Provider. Key = Encoding.ASCII.GetBytes (FormsAuthentication.HashPasswordForStoringInConfigFile (SKey, "MD5").            Substring (0, 8)); PROVIDER.IV = Encoding.ASCII.GetBytes (FormsAuthentication.HashPasswordForStoringInConfigFile (SKey, "MD5").            Substring (0, 8));             MemoryStream stream = new MemoryStream (); string x = Provider.            Mode.tostring (); CryptoStream stream2 = new CryptoStream (stream, provider.            CreateEncryptor (), cryptostreammode.write); Stream2. Write (bytes, 0, bytes.            Length); Stream2.            FlushFinalBlock ();            StringBuilder builder = new StringBuilder (); foreach (Byte num in stream. ToArray ()) {Builder.            AppendFormat ("{0:x2}", num); } return Builder.        ToString (); }

PHP7

Public function Encrypt ($input, $key) {$size = Mcrypt_get_block_size (Mcrypt_des, MCRYPT_MODE_CBC);        $input = $this->pkcs5_pad ($input, $size);        $TD = Mcrypt_module_open (Mcrypt_des, ', MCRYPT_MODE_CBC, ');        $iv = Mcrypt_create_iv (Mcrypt_enc_get_iv_size ($TD), Mcrypt_rand);        Mcrypt_generic_init ($TD, $key, $IV);        $data = Mcrypt_generic ($TD, $input);        Mcrypt_generic_deinit ($TD);        Mcrypt_module_close ($TD);        $data = Base64_encode ($data);    return $data;        } Private Function Pkcs5_pad ($text, $blocksize) {$pad = $blocksize-(strlen ($text)% $blocksize); Return $text.    Str_repeat (Chr ($pad), $pad); The public function decrypt ($SSTR, $sKey) {$decrypted = Mcrypt_decrypt (Mcrypt_des, $sKe        Y, Base64_decode ($sStr), MCRYPT_MODE_CBC);        $dec _s = strlen ($decrypted);        $padding = Ord ($decrypted [$dec _s-1]); $decrypted = substr ($decrypted, 0,-$padding);    return $decrypted; }

Reply content:

Thank you.

As below, there is a C # encryption and decryption method, I wrote a PHP7 implementation. But the result of the decryption and C # is completely different, where is wrong? I am a rookie, thank you.

C

public static string Decrypt (String Text, String sKey) {DESCryptoServiceProvider Provider = new DESCRYP            Toserviceprovider ();            int num = TEXT.LENGTH/2;            byte[] buffer = new Byte[num];                for (int i = 0; i < num; i++) {int num3 = Convert.ToInt32 (text.substring (i * 2, 2), 0x10);            Buffer[i] = (byte) num3; } provider. Key = Encoding.ASCII.GetBytes (FormsAuthentication.HashPasswordForStoringInConfigFile (SKey, "MD5").            Substring (0, 8)); PROVIDER.IV = Encoding.ASCII.GetBytes (FormsAuthentication.HashPasswordForStoringInConfigFile (SKey, "MD5").            Substring (0, 8));            MemoryStream stream = new MemoryStream (); CryptoStream stream2 = new CryptoStream (stream, provider.            CreateDecryptor (), cryptostreammode.write); Stream2. Write (buffer, 0, buffer.            Length); Stream2.            FlushFinalBlock (); Return Encoding.Default.GetString (stream.    ToArray ());    public static string Encrypt (String Text, String sKey) {DESCryptoServiceProvider provider            = new DESCryptoServiceProvider ();            byte[] bytes = Encoding.Default.GetBytes (Text); Provider. Key = Encoding.ASCII.GetBytes (FormsAuthentication.HashPasswordForStoringInConfigFile (SKey, "MD5").            Substring (0, 8)); PROVIDER.IV = Encoding.ASCII.GetBytes (FormsAuthentication.HashPasswordForStoringInConfigFile (SKey, "MD5").            Substring (0, 8));             MemoryStream stream = new MemoryStream (); string x = Provider.            Mode.tostring (); CryptoStream stream2 = new CryptoStream (stream, provider.            CreateEncryptor (), cryptostreammode.write); Stream2. Write (bytes, 0, bytes.            Length); Stream2.            FlushFinalBlock ();            StringBuilder builder = new StringBuilder (); foreach (Byte num in stream. ToArray ()) {Builder.            AppendFormat ("{0:x2}", num); } return Builder.        ToString (); }

PHP7

Public function Encrypt ($input, $key) {$size = Mcrypt_get_block_size (Mcrypt_des, MCRYPT_MODE_CBC);        $input = $this->pkcs5_pad ($input, $size);        $TD = Mcrypt_module_open (Mcrypt_des, ', MCRYPT_MODE_CBC, ');        $iv = Mcrypt_create_iv (Mcrypt_enc_get_iv_size ($TD), Mcrypt_rand);        Mcrypt_generic_init ($TD, $key, $IV);        $data = Mcrypt_generic ($TD, $input);        Mcrypt_generic_deinit ($TD);        Mcrypt_module_close ($TD);        $data = Base64_encode ($data);    return $data;        } Private Function Pkcs5_pad ($text, $blocksize) {$pad = $blocksize-(strlen ($text)% $blocksize); Return $text.    Str_repeat (Chr ($pad), $pad); The public function decrypt ($SSTR, $sKey) {$decrypted = Mcrypt_decrypt (Mcrypt_des, $sKe        Y, Base64_decode ($sStr), MCRYPT_MODE_CBC);        $dec _s = strlen ($decrypted);        $padding = Ord ($decrypted [$dec _s-1]); $decrypted = substr ($decrypted, 0,-$padding);    return $decrypted; }

Is it not good to use PHP's own OpenSSL?

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