A cryptographic wrapper library for the Go programming language
Implements the RC4 and AES wrapper libraries.
Each of the RC4 wrappers contain an Initialization Vector (IV) and a constant value that will be checked to maintain data integrity.
This method takes any length key and takes a SHA256 sum of it, making it suitable for the RC4 encrypt/decrypt functions.
func RC4_PrepareKey(key []byte) *[]byte // Return an array containing the SHA256 of the input keyThis method uses the following structure:
[IV][Constant][Data]
The IV is randomized each time, but if the key is the same, then the Constant should be the same, otherwise the RC4_Decrypt() method will fail.
Please note that if the input_key parameter is nil, then the method will generate its own by calling generateHostnameKey(), which will be a key based on the hostname of the system.
const RC4_IV_LEN uint = 16
var RC4_CONSTANT_VALUE = [4]byte{ 0x40, 0xad, 0x4f, 0x22 }
func RC4_Encrypt(data []byte, input_key *[]byte) ([]byte, error)The decrypt method removes the IV and Constant values, but checks that the Constant matches RC4_CONSTANT_VALUE, otherwise an error will be thrown.
func RC4_Decrypt(data []byte, input_key *[]byte) ([]byte, error)This method is used to generate a key based on the hostname of the system. An MD5 sum of the host is taken and returned as a []byte vector.
func generateHostnameKey() []byte//TODO