Commit 7e8a0a0d authored by Steven Fackler's avatar Steven Fackler
Browse files

Expose the lower level SHA functions 

These don't allocate so they're both infallible and significantly
faster.
parent 429f7c86

openssl-sys/src/lib.rs

+6 −0
Original line number Diff line number Diff line
@@ -1786,6 +1786,12 @@ extern { 
    pub fn DSA_verify(dummy: c_int, dgst: *const c_uchar, len: c_int, sigbuf: *const c_uchar,

                      siglen: c_int, dsa: *mut DSA) -> c_int;



    pub fn SHA1(d: *const c_uchar, n: size_t, md: *mut c_uchar) -> *mut c_uchar;

    pub fn SHA224(d: *const c_uchar, n: size_t, md: *mut c_uchar) -> *mut c_uchar;

    pub fn SHA256(d: *const c_uchar, n: size_t, md: *mut c_uchar) -> *mut c_uchar;

    pub fn SHA384(d: *const c_uchar, n: size_t, md: *mut c_uchar) -> *mut c_uchar;

    pub fn SHA512(d: *const c_uchar, n: size_t, md: *mut c_uchar) -> *mut c_uchar;



    pub fn SSL_new(ctx: *mut SSL_CTX) -> *mut SSL;

    pub fn SSL_pending(ssl: *const SSL) -> c_int;

    pub fn SSL_free(ssl: *mut SSL);

openssl/src/lib.rs

+1 −0
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ pub mod pkey; 
pub mod rand;

pub mod rsa;

pub mod sign;

pub mod sha;

pub mod ssl;

pub mod stack;

pub mod string;

openssl/src/sha.rs

0 → 100644
+107 −0
Original line number Diff line number Diff line 
//! The SHA family of hashes.

use ffi;

use std::mem;



/// Computes the SHA1 hash of some data.

///

/// # Warning

///

/// SHA1 is known to be insecure - it should not be used unless required for

/// compatibility with existing systems.

#[inline]

pub fn sha1(data: &[u8]) -> [u8; 20] {

    unsafe {

        let mut hash: [u8; 20] = mem::uninitialized();

        ffi::SHA1(data.as_ptr(), data.len(), hash.as_mut_ptr());

        hash

    }

}



/// Computes the SHA224 hash of some data.

#[inline]

pub fn sha224(data: &[u8]) -> [u8; 28] {

    unsafe {

        let mut hash: [u8; 28] = mem::uninitialized();

        ffi::SHA224(data.as_ptr(), data.len(), hash.as_mut_ptr());

        hash

    }

}



/// Computes the SHA256 hash of some data.

#[inline]

pub fn sha256(data: &[u8]) -> [u8; 32] {

    unsafe {

        let mut hash: [u8; 32] = mem::uninitialized();

        ffi::SHA256(data.as_ptr(), data.len(), hash.as_mut_ptr());

        hash

    }

}



/// Computes the SHA384 hash of some data.

#[inline]

pub fn sha384(data: &[u8]) -> [u8; 48] {

    unsafe {

        let mut hash: [u8; 48] = mem::uninitialized();

        ffi::SHA384(data.as_ptr(), data.len(), hash.as_mut_ptr());

        hash

    }

}



/// Computes the SHA512 hash of some data.

#[inline]

pub fn sha512(data: &[u8]) -> [u8; 64] {

    unsafe {

        let mut hash: [u8; 64] = mem::uninitialized();

        ffi::SHA512(data.as_ptr(), data.len(), hash.as_mut_ptr());

        hash

    }

}



#[cfg(test)]

mod test {

    use hex::ToHex;



    use super::*;



    #[test]

    fn standalone_1() {

        let data = b"abc";

        let expected = "a9993e364706816aba3e25717850c26c9cd0d89d";



        assert_eq!(sha1(data).to_hex(), expected);

    }



    #[test]

    fn standalone_224() {

        let data = b"abc";

        let expected = "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7";



        assert_eq!(sha224(data).to_hex(), expected);

    }



    #[test]

    fn standalone_256() {

        let data = b"abc";

        let expected = "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad";



        assert_eq!(sha256(data).to_hex(), expected);

    }



    #[test]

    fn standalone_384() {

        let data = b"abc";

        let expected = "cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed8086072ba1e\

                        7cc2358baeca134c825a7";



        assert_eq!((&sha384(data)[..]).to_hex(), expected);

    }



    #[test]

    fn standalone_512() {

        let data = b"abc";

        let expected = "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274\

                        fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f";



        assert_eq!((&sha512(data)[..]).to_hex(), expected);

    }

}