Module header 

The Dexios header is an encrypted file/data header that stores specific information needed for decryption.

This includes:

• header version
• salt
• nonce
• encryption algorithm
• whether the file was encrypted in “memory” or stream mode

It allows for serialization, deserialization, and has a convenience function for quickly writing the header to a file.

Examples

let header_bytes: [u8; 64] = [
    222, 2, 14, 1, 12, 1, 142, 88, 243, 144, 119, 187, 189, 190, 121, 90, 211, 56, 185, 14, 76,
    45, 16, 5, 237, 72, 7, 203, 13, 145, 13, 155, 210, 29, 128, 142, 241, 233, 42, 168, 243,
    129, 0, 0, 0, 0, 0, 0, 214, 45, 3, 4, 11, 212, 129, 123, 192, 157, 185, 109, 151, 225, 233,
    161,
];
let mut cursor = Cursor::new(header_bytes);

// the cursor may be a file, this is just an example

let (header, aad) = Header::deserialize(&mut cursor).unwrap();

let mut output_file = File::create("test").unwrap();

header.write(&mut output_file).unwrap();

Structs

Header

This is the main Header struct, and it contains all of the information about the encrypted data

HeaderType

This is the Header’s type - it contains the specific details that are needed to decrypt the data

Keyslot

This defines a keyslot that is used with header V4 and above. A keyslot contains information about the key, and the encrypted key itself

Enums

HashingAlgorithm

This is in place to make Keyslot handling a lot easier You may use the constants ARGON2ID_LATEST and BLAKE3BALLOON_LATEST for defining versions

HeaderVersion

This stores all possible versions of the header

Constants

ARGON2ID_LATEST

BLAKE3BALLOON_LATEST

HEADER_VERSION

This defines the latest header version, so program’s using this can easily stay up to date.