encrypt decrypt

desdecrypt = des. createdecryptor (); // create crypto stream set to read and do a // des Decryption Transform on incoming bytes. cryptostream cryptostreamdecr = new cryptostream (fsread, desdecrypt, cryptostreammode. read); // print the contents of the decrypted file. streamwriter fsdecrypted = new streamwriter (soutputfilename); fsdecrypted. write (New streamreader (cryptostreamdecr ). readtoend (); fsdecrypted. flush (); fsdecrypted. close ();} static void main () {// must be 64 bits, 8 byte

Asp.net and java are used to encrypt and decrypt des, asp. netjavades Recently, a new project was developed in java. The old project is asp.net, and the interface transmission requires des encryption and decryption. I checked some information on the Internet and most of the information can't be used, after debugging and processing, the specific code is as follows: The key must be 8 bits. /// The correspond

In a project in SharePoint 2010,2013, considering the deployment of a presence solution can result in a system down time, as well as the pursuit of one-click installation of all services, more and more people use PowerShell to create service Application, Web application, site collection, on page configuration WebPart, inevitably, we need to pass some account information during the creation process, if the user password is stored directly in PowerShell, It is not secure, and anyone who has access

= Mcrypt_create_iv ($size, Mcrypt_rand);//Create an initial vector $key _size= Mcrypt_enc_get_key_size ($TD);//returns the maximum supported key lengths (in bytes) $salt= ' '; $subkey=substr(MD5(MD5($key).$salt), 0,$key _size);//complex processing of keys and setting the lengthMcrypt_generic_init ($TD,$subkey,$iv); $data=RTrim(Mdecrypt_generic ($TD,$endata)).‘ \ n '; Mcrypt_generic_deinit ($TD); Mcrypt_module_close ($TD); return $data;}$key= "Www.tencent.com";//$data = "Returns the maximum

This article describes how to use base64 to encrypt and decrypt an image in php. The code is as follows: // File name: base64.php$ Data = "/9j/4 users/users // users/j5 + users + Tl5ufo6ery8/T19vf4 + fr/2 gAMAwEAAhEDEQA/users // AJ/J/wDvs0AI2qX/APz + z/Jun/DQBE2sakOl/cf9/Jun/6CgBdK0q41QS/Jun/wnmmtudow.gbp/Jun/3B/Jun/9/Jun + BycJ/Jun + supervisor/mKAOdc0wPYbX/j1h/3F /lSA858RtjX7z/f/examples + examples/j1h

-----","") . Replace ("-----END RSA PRIVATE KEY-----",""); RSACryptoServiceProvider Rsaprovider = Decodersaprivatekey (Prikey);//rsacryptoserviceprovider Rsaprovider = Decodersaprivatekey (); //rsaprovider.fromxmlstring ();String Privatekey = rsaprovider.toxmlstring (true);//The private key of the RSA algorithm is exported to the string Privatekey, and the parameter is true to export the private keyConsole.WriteLine (Privatekey);/****************************************

In encryption, decryption, the XOR operation should be relatively simple. The following code, which is encrypted with an XOR operation, decrypts:Click (here) to collapse or open #include #include #include #include QString getxorencryptdecrypt (const QString , const char ); QString bytetoqstring (const qbytearray byte); Qbytearray qstringtobyte (const QString strinfo); int main (int argc, char *argv[]) { Qcoreapplication A (argc, argv); QString str = QString ("ht

(); } return null; } static void Base64stringtoimage (String base64string) {try {byte[] Byte S1 = Decoder.decodebuffer (base64string); Bytearrayinputstream Bais = new Bytearrayinputstream (bytes1); BufferedImage bi1 =imageio.read (Bais); File W2 = new file ("C://qq.bmp");//Can be jpg,png,gif format imageio.write (bi1, "JPG", w2);//regardless of the output format picture, here do not need to change