cryptopals

commit f5e296b7aff44a16e70dd68588e4204b169ca2c6
parent e6461700dac973f8976bef1200c626cd38181ac6
Author: Jared Tobin <jared@jtobin.ca>
Date:   Sat, 27 May 2017 22:23:30 +1200

Add pure xor.

Diffstat:
M
docs/s2.md
 | 
3
+--
M
lib/aes_ecb/src/main.rs
 | 
10
++++++++++

2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/docs/s2.md b/docs/s2.md
@@ -15,6 +15,5 @@
     I'm back and I'm ringin' the bell
     A rockin' on the mike while the fly girls yell
 
-The problem description says NO OPENSSL, but I don't actually have much
-experience with openssl, so it's fun to check out.
+The problem description says NO OPENSSL, but heck them rules AMIRITE?
 
diff --git a/lib/aes_ecb/src/main.rs b/lib/aes_ecb/src/main.rs
@@ -7,6 +7,16 @@ use openssl::symm::{Cipher, Crypter, Mode};
 use std::io::{self, Read};
 use clap::{App, Arg};
 
+fn fixed_xor(target: Vec<u8>, partner: Vec<u8>) -> Vec<u8> {
+    assert_eq!(target.len(), partner.len());
+
+    target
+        .iter()
+        .zip(partner)
+        .map(|(&l, r)| l ^ r)
+        .collect()
+}
+
 fn crypt(cipher: Cipher,
          mode: Mode,
          key: &[u8],