diff --git a/md2/Cargo.toml b/md2/Cargo.toml new file mode 100644 index 000000000..404de843e --- /dev/null +++ b/md2/Cargo.toml @@ -0,0 +1,18 @@ +[package] +name = "md2" +version = "0.1.0" +authors = ["The Rust-Crypto Project Developers"] +license = "MIT/Apache-2.0" +description = "MD2 hash function" +documentation = "https://docs.rs/md2" +repository = "https://github.com/RustCrypto/hashes" +keywords = ["crypto", "md2", "hash", "digest"] + +[dependencies] +byte-tools = "0.1" +digest = "0.4" +digest-buffer = "0.2" +generic-array = "0.6" + +[dev-dependencies] +crypto-tests = "0.3" diff --git a/md2/LICENSE-APACHE b/md2/LICENSE-APACHE new file mode 100644 index 000000000..78173fa2e --- /dev/null +++ b/md2/LICENSE-APACHE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + +TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + +1. 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IN NO EVENT +SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR +IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +DEALINGS IN THE SOFTWARE. diff --git a/md2/benches/lib.rs b/md2/benches/lib.rs new file mode 100644 index 000000000..fb2f08395 --- /dev/null +++ b/md2/benches/lib.rs @@ -0,0 +1,7 @@ +#![no_std] +#![feature(test)] +#[macro_use] +extern crate crypto_tests; +extern crate md2; + +bench_digest!(md2::Md2); diff --git a/md2/examples/md2sum.rs b/md2/examples/md2sum.rs new file mode 100644 index 000000000..b0e0f5528 --- /dev/null +++ b/md2/examples/md2sum.rs @@ -0,0 +1,41 @@ +extern crate md2; + +use md2::{Md2, Digest}; +use std::env; +use std::fs; +use std::io::{self, Read}; + +const BUFFER_SIZE: usize = 1024; + +/// Compute digest value for given `Reader` and print it +/// On any error simply return without doing anything +fn process(reader: &mut R, name: &str) { + let mut sh = Md2::new(); + let mut buffer = [0u8; BUFFER_SIZE]; + loop { + let n = match reader.read(&mut buffer) { + Ok(n) => n, + Err(_) => return, + }; + sh.input(&buffer[..n]); + if n == 0 || n < BUFFER_SIZE { + break; + } + } + println!("{:x}\t{}", &sh.result(), name); +} + +fn main() { + let args = env::args(); + // Process files listed in command line arguments one by one + // If no files provided process input from stdin + if args.len() > 1 { + for path in args.skip(1) { + if let Ok(mut file) = fs::File::open(&path) { + process(&mut file, &path); + } + } + } else { + process(&mut io::stdin(), "-"); + } +} diff --git a/md2/src/lib.rs b/md2/src/lib.rs new file mode 100644 index 000000000..822376f8a --- /dev/null +++ b/md2/src/lib.rs @@ -0,0 +1,117 @@ +//! The [MD2][1] hash function. +//! +//! [1]: https://en.wikipedia.org/wiki/MD2_(cryptography) + +#![no_std] +extern crate byte_tools; +extern crate digest; +extern crate digest_buffer; +extern crate generic_array; + +pub use digest::Digest; +use byte_tools::copy_memory; +use digest_buffer::DigestBuffer; +use generic_array::GenericArray; +use generic_array::typenum::{U16, U48}; + +// values for the S-table +const S: [u8; 256] = + [41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6, 19, 98, 167, 5, 243, 192, + 199, 115, 140, 152, 147, 43, 217, 188, 76, 130, 202, 30, 155, 87, 60, 253, 212, 224, 22, 103, + 66, 111, 24, 138, 23, 229, 18, 190, 78, 196, 214, 218, 158, 222, 73, 160, 251, 245, 142, 187, + 47, 238, 122, 169, 104, 121, 145, 21, 178, 7, 63, 148, 194, 16, 137, 11, 34, 95, 33, 128, + 127, 93, 154, 90, 144, 50, 39, 53, 62, 204, 231, 191, 247, 151, 3, 255, 25, 48, 179, 72, 165, + 181, 209, 215, 94, 146, 42, 172, 86, 170, 198, 79, 184, 56, 210, 150, 164, 125, 182, 118, + 252, 107, 226, 156, 116, 4, 241, 69, 157, 112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, + 45, 168, 2, 27, 96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15, 85, 71, + 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197, 234, 38, 44, 83, 13, 110, 133, 40, + 132, 9, 211, 223, 205, 244, 65, 129, 77, 82, 106, 220, 55, 200, 108, 193, 171, 250, 36, 225, + 123, 8, 12, 189, 177, 74, 120, 136, 149, 139, 227, 99, 232, 109, 233, 203, 213, 254, 59, 0, + 29, 57, 242, 239, 183, 14, 102, 88, 208, 228, 166, 119, 114, 248, 235, 117, 75, 10, 49, 68, + 80, 180, 143, 237, 31, 26, 219, 153, 141, 51, 159, 17, 131, 20]; + +type BlockSize = U16; +type Block = GenericArray; + +#[derive(Copy, Clone, Default)] +struct Md2State { + x: GenericArray, + checksum: GenericArray, +} + +#[derive(Copy, Clone, Default)] +pub struct Md2 { + buffer: DigestBuffer, + state: Md2State, +} + + +impl Md2State { + fn process_block(&mut self, input: &Block) { + // Update state + for j in 0..16 { + self.x[16 + j] = input[j]; + self.x[32 + j] = self.x[16 + j] ^ self.x[j]; + } + + let mut t = 0u8; + for j in 0..18u8 { + for k in 0..48 { + self.x[k] ^= S[t as usize]; + t = self.x[k]; + } + t = t.wrapping_add(j); + } + + // Update checksum + let mut l = self.checksum[15]; + for j in 0..16 { + self.checksum[j] ^= S[(input[j] ^ l) as usize]; + l = self.checksum[j]; + } + } +} + +impl Md2 { + pub fn new() -> Md2 { + Md2 { + buffer: Default::default(), + state: Default::default(), + } + } + + fn finalize(&mut self) { + let self_state = &mut self.state; + { + // Padding + let rem = self.buffer.remaining(); + let mut buffer_end = self.buffer.next(rem); + for idx in 0..rem { + buffer_end[idx] = rem as u8; + } + } + self_state.process_block(self.buffer.full_buffer()); + let checksum = self_state.checksum; + self_state.process_block(&checksum); + } +} + +impl Digest for Md2 { + type OutputSize = U16; + type BlockSize = BlockSize; + + fn input(&mut self, input: &[u8]) { + let self_state = &mut self.state; + self.buffer.input(input, |d: &Block| { + self_state.process_block(d); + }); + } + + fn result(mut self) -> GenericArray { + self.finalize(); + + let mut out = GenericArray::default(); + copy_memory(&self.state.x[0..16], &mut out); + out + } +} diff --git a/md2/tests/data/test1.input.bin b/md2/tests/data/test1.input.bin new file mode 100644 index 000000000..ff3bb6394 --- /dev/null +++ b/md2/tests/data/test1.input.bin @@ -0,0 +1 @@ +The quick brown fox jumps over the lazy dog \ No newline at end of file diff --git a/md2/tests/data/test1.output.bin b/md2/tests/data/test1.output.bin new file mode 100644 index 000000000..4d0e073b6 --- /dev/null +++ b/md2/tests/data/test1.output.bin @@ -0,0 +1 @@ +Z b,D.u%1q \ No newline at end of file diff --git a/md2/tests/data/test2.input.bin b/md2/tests/data/test2.input.bin new file mode 100644 index 000000000..12e0608ed --- /dev/null +++ b/md2/tests/data/test2.input.bin @@ -0,0 +1 @@ +The quick brown fox jumps over the lazy cog \ No newline at end of file diff --git a/md2/tests/data/test2.output.bin b/md2/tests/data/test2.output.bin new file mode 100644 index 000000000..b1fb47558 Binary files /dev/null and b/md2/tests/data/test2.output.bin differ diff --git a/md2/tests/data/test3.input.bin b/md2/tests/data/test3.input.bin new file mode 100644 index 000000000..e69de29bb diff --git a/md2/tests/data/test3.output.bin b/md2/tests/data/test3.output.bin new file mode 100644 index 000000000..574f60818 --- /dev/null +++ b/md2/tests/data/test3.output.bin @@ -0,0 +1 @@ +PL='\i's \ No newline at end of file diff --git a/md2/tests/lib.rs b/md2/tests/lib.rs new file mode 100644 index 000000000..d83c08100 --- /dev/null +++ b/md2/tests/lib.rs @@ -0,0 +1,13 @@ +#![no_std] +#[macro_use] +extern crate crypto_tests; +extern crate md2; + +use crypto_tests::hash::{Test, main_test}; + +#[test] +fn md2_main() { + // Examples from wikipedia + let tests = new_tests!("test1", "test2", "test3"); + main_test::(&tests); +}