0xalivecow/kauma
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

feat: finalise XEX runner and testing

Browse source
This commit is contained in:
0xalivecow 2024-10-28 18:41:15 +01:00
parent c34557ea29
commit 31050ea696
No known key found for this signature in database
6 changed files with 146 additions and 49 deletions
Download patch file Download diff file Expand all files Collapse all files

39
src/utils/ciphers.rs
View file

@ -63,27 +63,23 @@ pub fn xex_encrypt(mut key: Vec<u8>, tweak: &Vec<u8>, input: &Vec<u8>) -> Result
let input_chunks: Vec<Vec<u8>> = input.chunks(16).map(|x| x.to_vec()).collect();
let mut output: Vec<u8> = vec![];
assert!(key.len() % 16 == 0, "Failure: Key len {}", key.len());
assert!(key2.len() % 16 == 0, "Failure: Key2 len {}", key2.len());
//assert!(key.len() % 16 == 0, "Failure: Key len {}", key.len());
//assert!(key2.len() % 16 == 0, "Failure: Key2 len {}", key2.len());
let mut tweak_block: ByteArray = ByteArray(sea_128_encrypt(&key2, tweak)?);
dbg!("input_chunks: {:001X?}", &input_chunks);
//dbg!("input_chunks: {:001X?}", &input_chunks);
for chunk in input_chunks {
eprintln!("chunk: {:001X?}", &chunk);
let plaintext_intermediate = xor_bytes(&tweak_block.0, chunk)?;
eprintln!("key: {:001X?}", &key);
eprintln!("key2: {:001X?}", &key2);
eprintln!("plain: {:001X?}", &plaintext_intermediate);
eprintln!("tweak_block: {:001X?}", &tweak_block.0);
assert!(
plaintext_intermediate.len() % 16 == 0,
"Failure: plaintext_intermediate len was {}",
plaintext_intermediate.len()
);
assert!(key.len() % 16 == 0, "Failure: Key len {}", key.len());
assert!(key2.len() % 16 == 0, "Failure: Key2 len {}", key2.len());
/*
assert!(
plaintext_intermediate.len() % 16 == 0,
"Failure: plaintext_intermediate len was {}",
plaintext_intermediate.len()
);
*/
//assert!(key.len() % 16 == 0, "Failure: Key len {}", key.len());
//assert!(key2.len() % 16 == 0, "Failure: Key2 len {}", key2.len());
let cypher_block_intermediate = sea_128_encrypt(&key, &plaintext_intermediate)?;
let mut cypher_block = xor_bytes(&tweak_block.0, cypher_block_intermediate)?;
output.append(cypher_block.as_mut());
@ -101,18 +97,14 @@ pub fn xex_decrypt(mut key: Vec<u8>, tweak: &Vec<u8>, input: &Vec<u8>) -> Result
let input_chunks: Vec<Vec<u8>> = input.chunks(16).map(|x| x.to_vec()).collect();
let mut output: Vec<u8> = vec![];
assert!(key.len() % 16 == 0, "Failure: Key len {}", key.len());
assert!(key2.len() % 16 == 0, "Failure: Key2 len {}", key2.len());
//assert!(key.len() % 16 == 0, "Failure: Key len {}", key.len());
//assert!(key2.len() % 16 == 0, "Failure: Key2 len {}", key2.len());
let mut tweak_block: ByteArray = ByteArray(sea_128_encrypt(&key2, tweak)?);
for chunk in input_chunks {
eprintln!("chunk: {:001X?}", &chunk);
let cyphertext_intermediate = xor_bytes(&tweak_block.0, chunk)?;
eprintln!("key: {:001X?}", &key);
eprintln!("key2: {:001X?}", &key2);
eprintln!("plain: {:001X?}", &cyphertext_intermediate);
eprintln!("tweak_block: {:001X?}", &tweak_block.0);
/*
assert!(
cyphertext_intermediate.len() % 16 == 0,
"Failure: plaintext_intermediate len was {}",
@ -120,6 +112,7 @@ pub fn xex_decrypt(mut key: Vec<u8>, tweak: &Vec<u8>, input: &Vec<u8>) -> Result
);
assert!(key.len() % 16 == 0, "Failure: Key len {}", key.len());
assert!(key2.len() % 16 == 0, "Failure: Key2 len {}", key2.len());
*/
let plaintext_block_intermediate = sea_128_decrypt(&key, &cyphertext_intermediate)?;
let mut cypher_block = xor_bytes(&tweak_block.0, plaintext_block_intermediate)?;
output.append(cypher_block.as_mut());