decrypt Method

Decrypts the data.

Syntax

def decrypt() -> None: ...

Remarks

on_decrypt will decrypt the specified data. The following properties are applicable:

• iv (required)
• key (required)

Input and Output Properties

The class will determine the source and destination of the input and output based on which properties are set.

The order in which the input properties are checked is as follows:

• input_file
• input_message

When a valid source is found the search stops. The order in which the output properties are checked is as follows:

• output_file
• output_message: The output data is written to this property if no other destination is specified.

Additional Notes

The key property must be set to the 256 bit (32 byte) value originally used to encrypt the data. iv must be set to the original IV value used to encrypt the data.

If using a password, key_password must be set to the same key_password used when encrypting the data. This will automatically generate both key and iv when on_decrypt is called.

During decryption the on_progress event will fire as data is decrypted.

Decrypt Example

Salsa20 salsa = new Salsa20();

//32 Bytes
salsa.KeyB = new byte[] { 0xBB, 0x76, 0x17, 0xC9, 0x05, 0x73, 0x4A, 0x8D, 0x59, 0x9D, 0x7B, 0x0D, 0x86, 0x2A, 0x03, 0x82, 0x50, 0x6A, 0x70, 0xFB, 0xA8, 0x56, 0x47, 0x1B, 0x1E, 0x68, 0x0B, 0x2B, 0x34, 0x18, 0x0F, 0xE2 };

//24 Bytes
salsa.IVB = new byte[] { 0x0D, 0xE4, 0x43, 0x40, 0x29, 0xAD, 0x70, 0x7D, 0x7B, 0x32, 0xB5, 0xC7, 0x0D, 0xE4, 0x43, 0x40, 0x29, 0xAD, 0x70, 0x7D, 0x7B, 0x32, 0xB5, 0xC7 };

salsa.InputMessageB = new byte[] { 0x06, 0xF4, 0xD9, 0xB4, 0x67, 0x31, 0x1C, 0x1E, 0x8E, 0xD6, 0xB5, 0x6B };
salsa.Decrypt();

Console.WriteLine(salsa.OutputMessage); //outputs "hello salsa!"