Struct Rar4Crypto 

pub struct Rar4Crypto { /* private fields */ }

Available on crate feature crypto only.

RAR 3.x/4.x crypto handler.

Implementations

impl Rar4Crypto

pub fn derive_key(password: &str, salt: &[u8; 8]) -> Self

Derive key and IV from password and salt.

The RAR4 KDF uses 2^18 iterations of SHA-1:

• Password is encoded as UTF-16LE, concatenated with salt as seed
• Each iteration: SHA1.update(seed + counter[0..3])
• Counter is a 3-byte little-endian integer
• Every 16384 (0x4000) iterations at j=0, extract byte 19 of digest as IV byte
• Final SHA-1 digest (first 16 bytes) is the AES-128 key (with endian swap)

pub fn decrypt(&self, data: &mut [u8]) -> Result<(), CryptoError>

Decrypt data in place using AES-128-CBC (using first 16 bytes of key).

pub fn decrypt_to_vec(&self, data: &[u8]) -> Result<Vec<u8>, CryptoError>

Decrypt data returning a new Vec.

pub fn iv(&self) -> &[u8; 16]

Get the derived IV.

pub fn key(&self) -> &[u8; 32]

Get the derived key.

Trait Implementations

impl Clone for Rar4Crypto

fn clone(&self) -> Rar4Crypto

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Rar4Crypto

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Drop for Rar4Crypto

fn drop(&mut self)

Executes the destructor for this type.