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authorSteven Fackler <[email protected]>2015-02-07 21:28:54 -0800
committerSteven Fackler <[email protected]>2015-02-07 21:30:05 -0800
commitec65b0c67b452539fded5e06cbb6ce1d165074e0 (patch)
treec50c22c2ce4ca095149c96a0f3a3b935b4012a5c /src/crypto/hash.rs
parentFix deprecation warnings in openssl-sys (diff)
downloadrust-openssl-ec65b0c67b452539fded5e06cbb6ce1d165074e0.tar.xz
rust-openssl-ec65b0c67b452539fded5e06cbb6ce1d165074e0.zip
Move docs to this repo and auto build
Diffstat (limited to 'src/crypto/hash.rs')
-rw-r--r--src/crypto/hash.rs333
1 files changed, 0 insertions, 333 deletions
diff --git a/src/crypto/hash.rs b/src/crypto/hash.rs
deleted file mode 100644
index f81532c9..00000000
--- a/src/crypto/hash.rs
+++ /dev/null
@@ -1,333 +0,0 @@
-use libc::c_uint;
-use std::iter::repeat;
-use std::old_io::{IoError, Writer};
-
-use ffi;
-
-/// Message digest (hash) type.
-#[derive(Copy)]
-pub enum Type {
- MD5,
- SHA1,
- SHA224,
- SHA256,
- SHA384,
- SHA512,
- RIPEMD160
-}
-
-impl Type {
- /// Returns the length of the message digest.
- #[inline]
- pub fn md_len(&self) -> usize {
- use self::Type::*;
- match *self {
- MD5 => 16,
- SHA1 => 20,
- SHA224 => 28,
- SHA256 => 32,
- SHA384 => 48,
- SHA512 => 64,
- RIPEMD160 => 20,
- }
- }
-
- /// Internal interface subject to removal.
- #[inline]
- pub fn evp_md(&self) -> *const ffi::EVP_MD {
- unsafe {
- use self::Type::*;
- match *self {
- MD5 => ffi::EVP_md5(),
- SHA1 => ffi::EVP_sha1(),
- SHA224 => ffi::EVP_sha224(),
- SHA256 => ffi::EVP_sha256(),
- SHA384 => ffi::EVP_sha384(),
- SHA512 => ffi::EVP_sha512(),
- RIPEMD160 => ffi::EVP_ripemd160(),
- }
- }
- }
-}
-
-#[derive(PartialEq, Copy)]
-enum State {
- Reset,
- Updated,
- Finalized,
-}
-
-use self::State::*;
-
-/// Provides message digest (hash) computation.
-///
-/// # Examples
-///
-/// Calculate a hash in one go.
-///
-/// ```
-/// use openssl::crypto::hash::{hash, Type};
-/// let data = b"\x42\xF4\x97\xE0";
-/// let spec = b"\x7c\x43\x0f\x17\x8a\xef\xdf\x14\x87\xfe\xe7\x14\x4e\x96\x41\xe2";
-/// let res = hash(Type::MD5, data);
-/// assert_eq!(res, spec);
-/// ```
-///
-/// Use the `Writer` trait to supply the input in chunks.
-///
-/// ```
-/// use std::old_io::Writer;
-/// use openssl::crypto::hash::{Hasher, Type};
-/// let data = [b"\x42\xF4", b"\x97\xE0"];
-/// let spec = b"\x7c\x43\x0f\x17\x8a\xef\xdf\x14\x87\xfe\xe7\x14\x4e\x96\x41\xe2";
-/// let mut h = Hasher::new(Type::MD5);
-/// h.write_all(data[0]);
-/// h.write_all(data[1]);
-/// let res = h.finish();
-/// assert_eq!(res, spec);
-/// ```
-///
-/// # Warning
-///
-/// Don't actually use MD5 and SHA-1 hashes, they're not secure anymore.
-///
-/// Don't ever hash passwords, use `crypto::pkcs5` or bcrypt/scrypt instead.
-pub struct Hasher {
- ctx: *mut ffi::EVP_MD_CTX,
- md: *const ffi::EVP_MD,
- type_: Type,
- state: State,
-}
-
-impl Hasher {
- /// Creates a new `Hasher` with the specified hash type.
- pub fn new(ty: Type) -> Hasher {
- ffi::init();
-
- let ctx = unsafe {
- let r = ffi::EVP_MD_CTX_create();
- assert!(!r.is_null());
- r
- };
- let md = ty.evp_md();
-
- let mut h = Hasher { ctx: ctx, md: md, type_: ty, state: Finalized };
- h.init();
- h
- }
-
- #[inline]
- fn init(&mut self) {
- match self.state {
- Reset => return,
- Updated => { self.finalize(); },
- Finalized => (),
- }
- unsafe {
- let r = ffi::EVP_DigestInit_ex(self.ctx, self.md, 0 as *const _);
- assert_eq!(r, 1);
- }
- self.state = Reset;
- }
-
- #[inline]
- fn update(&mut self, data: &[u8]) {
- if self.state == Finalized {
- self.init();
- }
- unsafe {
- let r = ffi::EVP_DigestUpdate(self.ctx, data.as_ptr(),
- data.len() as c_uint);
- assert_eq!(r, 1);
- }
- self.state = Updated;
- }
-
- #[inline]
- fn finalize(&mut self) -> Vec<u8> {
- if self.state == Finalized {
- self.init();
- }
- let md_len = self.type_.md_len();
- let mut res: Vec<u8> = repeat(0).take(md_len).collect();
- unsafe {
- let mut len = 0;
- let r = ffi::EVP_DigestFinal_ex(self.ctx, res.as_mut_ptr(), &mut len);
- self.state = Finalized;
- assert_eq!(len as usize, md_len);
- assert_eq!(r, 1);
- }
- res
- }
-
- /// Returns the hash of the data written since creation or
- /// the last `finish` and resets the hasher.
- #[inline]
- pub fn finish(&mut self) -> Vec<u8> {
- self.finalize()
- }
-}
-
-impl Writer for Hasher {
- #[inline]
- fn write_all(&mut self, buf: &[u8]) -> Result<(), IoError> {
- self.update(buf);
- Ok(())
- }
-}
-
-impl Clone for Hasher {
- fn clone(&self) -> Hasher {
- let ctx = unsafe {
- let ctx = ffi::EVP_MD_CTX_create();
- assert!(!ctx.is_null());
- let r = ffi::EVP_MD_CTX_copy_ex(ctx, self.ctx);
- assert_eq!(r, 1);
- ctx
- };
- Hasher { ctx: ctx, md: self.md, type_: self.type_, state: self.state }
- }
-}
-
-impl Drop for Hasher {
- fn drop(&mut self) {
- unsafe {
- if self.state != Finalized {
- let mut buf: Vec<u8> = repeat(0).take(self.type_.md_len()).collect();
- let mut len = 0;
- ffi::EVP_DigestFinal_ex(self.ctx, buf.as_mut_ptr(), &mut len);
- }
- ffi::EVP_MD_CTX_destroy(self.ctx);
- }
- }
-}
-
-/// Computes the hash of the `data` with the hash `t`.
-pub fn hash(t: Type, data: &[u8]) -> Vec<u8> {
- let mut h = Hasher::new(t);
- let _ = h.write_all(data);
- h.finish()
-}
-
-#[cfg(test)]
-mod tests {
- use serialize::hex::{FromHex, ToHex};
- use super::{hash, Hasher, Type};
- use std::old_io::Writer;
-
- fn hash_test(hashtype: Type, hashtest: &(&str, &str)) {
- let res = hash(hashtype, &*hashtest.0.from_hex().unwrap());
- assert_eq!(res.to_hex(), hashtest.1);
- }
-
- fn hash_recycle_test(h: &mut Hasher, hashtest: &(&str, &str)) {
- let _ = h.write_all(&*hashtest.0.from_hex().unwrap());
- let res = h.finish();
- assert_eq!(res.to_hex(), hashtest.1);
- }
-
- // Test vectors from http://www.nsrl.nist.gov/testdata/
- #[allow(non_upper_case_globals)]
- const md5_tests: [(&'static str, &'static str); 13] = [
- ("", "d41d8cd98f00b204e9800998ecf8427e"),
- ("7F", "83acb6e67e50e31db6ed341dd2de1595"),
- ("EC9C", "0b07f0d4ca797d8ac58874f887cb0b68"),
- ("FEE57A", "e0d583171eb06d56198fc0ef22173907"),
- ("42F497E0", "7c430f178aefdf1487fee7144e9641e2"),
- ("C53B777F1C", "75ef141d64cb37ec423da2d9d440c925"),
- ("89D5B576327B", "ebbaf15eb0ed784c6faa9dc32831bf33"),
- ("5D4CCE781EB190", "ce175c4b08172019f05e6b5279889f2c"),
- ("81901FE94932D7B9", "cd4d2f62b8cdb3a0cf968a735a239281"),
- ("C9FFDEE7788EFB4EC9", "e0841a231ab698db30c6c0f3f246c014"),
- ("66AC4B7EBA95E53DC10B", "a3b3cea71910d9af56742aa0bb2fe329"),
- ("A510CD18F7A56852EB0319", "577e216843dd11573574d3fb209b97d8"),
- ("AAED18DBE8938C19ED734A8D", "6f80fb775f27e0a4ce5c2f42fc72c5f1")
- ];
-
- #[test]
- fn test_md5() {
- for test in md5_tests.iter() {
- hash_test(Type::MD5, test);
- }
- }
-
- #[test]
- fn test_md5_recycle() {
- let mut h = Hasher::new(Type::MD5);
- for test in md5_tests.iter() {
- hash_recycle_test(&mut h, test);
- }
- }
-
- #[test]
- fn test_finish_twice() {
- let mut h = Hasher::new(Type::MD5);
- let _ = h.write_all(&*md5_tests[6].0.from_hex().unwrap());
- let _ = h.finish();
- let res = h.finish();
- let null = hash(Type::MD5, &[]);
- assert_eq!(res, null);
- }
-
- #[test]
- fn test_clone() {
- let i = 7;
- let inp = md5_tests[i].0.from_hex().unwrap();
- assert!(inp.len() > 2);
- let p = inp.len() / 2;
- let h0 = Hasher::new(Type::MD5);
-
- println!("Clone a new hasher");
- let mut h1 = h0.clone();
- let _ = h1.write_all(&inp[..p]);
- {
- println!("Clone an updated hasher");
- let mut h2 = h1.clone();
- let _ = h2.write_all(&inp[p..]);
- let res = h2.finish();
- assert_eq!(res.to_hex(), md5_tests[i].1);
- }
- let _ = h1.write_all(&inp[p..]);
- let res = h1.finish();
- assert_eq!(res.to_hex(), md5_tests[i].1);
-
- println!("Clone a finished hasher");
- let mut h3 = h1.clone();
- let _ = h3.write_all(&*md5_tests[i + 1].0.from_hex().unwrap());
- let res = h3.finish();
- assert_eq!(res.to_hex(), md5_tests[i + 1].1);
- }
-
- #[test]
- fn test_sha1() {
- let tests = [
- ("616263", "a9993e364706816aba3e25717850c26c9cd0d89d"),
- ];
-
- for test in tests.iter() {
- hash_test(Type::SHA1, test);
- }
- }
-
- #[test]
- fn test_sha256() {
- let tests = [
- ("616263", "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad")
- ];
-
- for test in tests.iter() {
- hash_test(Type::SHA256, test);
- }
- }
-
- #[test]
- fn test_ripemd160() {
- let tests = [
- ("616263", "8eb208f7e05d987a9b044a8e98c6b087f15a0bfc")
- ];
-
- for test in tests.iter() {
- hash_test(Type::RIPEMD160, test);
- }
- }
-}