From ff9e573a6752cde4760fafdb94f7337c9e133905 Mon Sep 17 00:00:00 2001
From: Palmer Cox
Date: Tue, 22 Oct 2013 23:57:55 -0400
Subject: [PATCH] Remove MD4.
---
src/libextra/extra.rs | 1 -
src/libextra/md4.rs | 150 ------------------------------------------
2 files changed, 151 deletions(-)
delete mode 100644 src/libextra/md4.rs
diff --git a/src/libextra/extra.rs b/src/libextra/extra.rs
index 6abad2ed181..90434cf0d49 100644
--- a/src/libextra/extra.rs
+++ b/src/libextra/extra.rs
@@ -74,7 +74,6 @@ pub mod url;
pub mod ebml;
pub mod getopts;
pub mod json;
-pub mod md4;
pub mod tempfile;
pub mod glob;
pub mod term;
diff --git a/src/libextra/md4.rs b/src/libextra/md4.rs
deleted file mode 100644
index 96238986bf1..00000000000
--- a/src/libextra/md4.rs
+++ /dev/null
@@ -1,150 +0,0 @@
-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 or the MIT license
-// , at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#[allow(missing_doc)];
-
-use std::vec;
-
-struct Quad {
- a: u32,
- b: u32,
- c: u32,
- d: u32
-}
-
-/// Calculates the md4 hash of the given slice of bytes, returning the 128-bit
-/// result as a quad of u32's
-pub fn md4(msg: &[u8]) -> Quad {
- // subtle: if orig_len is merely uint, then the code below
- // which performs shifts by 32 bits or more has undefined
- // results.
- let orig_len: u64 = (msg.len() * 8u) as u64;
-
- // pad message
- let mut msg = vec::append(msg.to_owned(), [0x80u8]);
- let mut bitlen = orig_len + 8u64;
- while (bitlen + 64u64) % 512u64 > 0u64 {
- msg.push(0u8);
- bitlen += 8u64;
- }
-
- // append length
- let mut i = 0u64;
- while i < 8u64 {
- msg.push((orig_len >> (i * 8u64)) as u8);
- i += 1u64;
- }
-
- let mut a = 0x67452301u32;
- let mut b = 0xefcdab89u32;
- let mut c = 0x98badcfeu32;
- let mut d = 0x10325476u32;
-
- fn rot(r: int, x: u32) -> u32 {
- let r = r as u32;
- (x << r) | (x >> (32u32 - r))
- }
-
- let mut i = 0u;
- let e = msg.len();
- let mut x = vec::from_elem(16u, 0u32);
- while i < e {
- let (aa, bb, cc, dd) = (a, b, c, d);
-
- let mut j = 0u;
- let mut base = i;
- while j < 16u {
- x[j] = (msg[base] as u32) + (msg[base + 1u] as u32 << 8u32) +
- (msg[base + 2u] as u32 << 16u32) +
- (msg[base + 3u] as u32 << 24u32);
- j += 1u; base += 4u;
- }
-
- let mut j = 0u;
- while j < 16u {
- a = rot(3, a + ((b & c) | (!b & d)) + x[j]);
- j += 1u;
- d = rot(7, d + ((a & b) | (!a & c)) + x[j]);
- j += 1u;
- c = rot(11, c + ((d & a) | (!d & b)) + x[j]);
- j += 1u;
- b = rot(19, b + ((c & d) | (!c & a)) + x[j]);
- j += 1u;
- }
-
- let mut j = 0u;
- let q = 0x5a827999u32;
- while j < 4u {
- a = rot(3, a + ((b & c) | ((b & d) | (c & d))) + x[j] + q);
- d = rot(5, d + ((a & b) | ((a & c) | (b & c))) + x[j + 4u] + q);
- c = rot(9, c + ((d & a) | ((d & b) | (a & b))) + x[j + 8u] + q);
- b = rot(13, b + ((c & d) | ((c & a) | (d & a))) + x[j + 12u] + q);
- j += 1u;
- }
-
- let mut j = 0u;
- let q = 0x6ed9eba1u32;
- while j < 8u {
- let jj = if j > 2u { j - 3u } else { j };
- a = rot(3, a + (b ^ c ^ d) + x[jj] + q);
- d = rot(9, d + (a ^ b ^ c) + x[jj + 8u] + q);
- c = rot(11, c + (d ^ a ^ b) + x[jj + 4u] + q);
- b = rot(15, b + (c ^ d ^ a) + x[jj + 12u] + q);
- j += 2u;
- }
-
- a += aa; b += bb; c += cc; d += dd;
- i += 64u;
- }
- return Quad {a: a, b: b, c: c, d: d};
-}
-
-/// Calculates the md4 hash of a slice of bytes, returning the hex-encoded
-/// version of the hash
-pub fn md4_str(msg: &[u8]) -> ~str {
- let Quad {a, b, c, d} = md4(msg);
- fn app(a: u32, b: u32, c: u32, d: u32, f: &fn(u32)) {
- f(a); f(b); f(c); f(d);
- }
- let mut result = ~"";
- do app(a, b, c, d) |u| {
- let mut i = 0u32;
- while i < 4u32 {
- let byte = (u >> (i * 8u32)) as u8;
- if byte <= 16u8 {
- result.push_char('0')
- }
- result.push_str((byte as uint).to_str_radix(16u));
- i += 1u32;
- }
- }
- result
-}
-
-/// Calculates the md4 hash of a string, returning the hex-encoded version of
-/// the hash
-pub fn md4_text(msg: &str) -> ~str { md4_str(msg.as_bytes()) }
-
-#[test]
-fn test_md4() {
- assert_eq!(md4_text(""), ~"31d6cfe0d16ae931b73c59d7e0c089c0");
- assert_eq!(md4_text("a"), ~"bde52cb31de33e46245e05fbdbd6fb24");
- assert_eq!(md4_text("abc"), ~"a448017aaf21d8525fc10ae87aa6729d");
- assert!(md4_text("message digest") ==
- ~"d9130a8164549fe818874806e1c7014b");
- assert!(md4_text("abcdefghijklmnopqrstuvwxyz") ==
- ~"d79e1c308aa5bbcdeea8ed63df412da9");
- assert!(md4_text(
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\
- 0123456789") == ~"043f8582f241db351ce627e153e7f0e4");
- assert!(md4_text("1234567890123456789012345678901234567890123456789\
- 0123456789012345678901234567890") ==
- ~"e33b4ddc9c38f2199c3e7b164fcc0536");
-}