File Encryption Encrypting contents of file
标签： Encryption Encrypting contents File
上传时间： 2014-01-07
上传用户：cjf0304
about encryption method of the quantom . this way is the new method for powerfull Encrypting messages for security applets.
标签： method encryption Encrypting the
上传时间： 2017-07-15
上传用户：hj_18
RSA Encrypting algorithm
标签： Encrypting algorithm RSA
上传时间： 2014-01-03
上传用户：jackgao
DES Encrypting algorithm
标签： Encrypting algorithm DES
上传时间： 2013-12-22
上传用户：13215175592
polybios Encrypting
标签： Encrypting polybios
上传时间： 2013-12-22
上传用户：shinesyh
What Does the code DO? Sometimes we may desire to hide our file contents from others.One of the possible way is Encrypting these files.Here a simple encryption technique is used(In VB - The same technique can be implemented in "c" also.) Program flow Explained * Open the File to be encrypted for Binary Access Read(Say Source File) * Open a temparory file where encrypted data is stored for Binary Access Write(Say Destination File) * Loop through the Source File Byte by Byte * For each byte read from the file, Complement the data. (Using Not operator (in C we have to use "~" operator) * Write Complemented Data to Destination File * Delete the Source File * Rename Destination file as Source File(Now Encryption is over)
标签： Sometimes the contents desire
上传时间： 2013-12-25
上传用户：playboys0
SharpPrivacy has been developed to be an Open Source implementation of the OpenPGP standard. OpenPGP is a standard for Encrypting, decrypting, signing and verifying data cryptographically. The OpenPGP protocoll is commonly used and is said to be very secure.
标签： OpenPGP implementation SharpPrivacy developed
上传时间： 2017-01-13
上传用户：dreamboy36
Playfair Cipher 1.not even the large number of keys in a monoalphabetic cipher provides security 2.one approach to improving security was to encrypt multiple letters 3.the Playfair Cipher is an example 4.invented by Charles Wheatstone in 1854,but named after his friend Baron Playfair Playfair Key Matrix 1.a 5X5 matrix of letters based on a keyword 2.fill in letters of keyword (sans duplicates) 3.fill rest of matrix with other letters Encrypting and Decrypting -plaintext is encrypted two letters at a time 1. if a pair is a repeated letter, insert filler like X’ 2. if both letters fall in the same row, replace each with letter to right (wrapping back to start from end) 3. if both letters fall in the same column, replace each with the letter below it (again wrapping to top from bottom) 4. otherwise each letter is replaced by the letter in the same row and in the column of the other letter of the pair
标签： monoalphabetic Playfair provides security
上传时间： 2017-05-25
上传用户：变形金刚
