C sha1实现在Unix上不起作用

Question

I'm using this implementation of SHA1 in C. Works fine on Windows but it does not output correct hashes on Unix (tried it on Ubuntu and Mac OS 10.8). Furthermore, on Ubuntu it outputs different hash from the same message.

I guess I could use another implementation, just curious why that happens.

EDIT

Thanks, you guys are right. Changed it to

typedef unsigned int UINT4;

seems to work fine.

Answer 1

Are these 64bit unix'es?

/* UINT4 defines a four byte word */
typedef unsigned long int UINT4;

will actually be 8 bytes on 64 bit Linux (but 4 bytes on 64 bit Windows)

https://en.wikipedia.org/wiki/64-bit_computing#64-bit_data_models

Answer 2

If any of the platforms is 64-bit and has a 64-bit unsigned long , this code might have issues:

/* UINT4 defines a four byte word */
typedef unsigned long int UINT4;

Didn't read the code closely enough to see if the way UINT4 is used would break if it's actually 8 bytes, but it sounds fishy.

Answer 3

typedef unsigned long int UINT4;

Maybe your Unix implementation uses 64-bit unsigned longs.

Try

#include <stdint.h>

/* ... */

typedef uint32_t UINT4;

and use a C99 compiler.