I've implemented the md5 source from a crypt lib from http://sourceforge.net/projects/libcrypt/

The string I'm passing to md5 is ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890.

From the md5 provided by my system I receive this hash 26756d7b34ff23859568262596dc159d but from what I've implemented I'm getting, consistently, 11e16a7373051c77c51798c45611581c.

I'm sure both follow the standards for md5 but just use a different "starting point" to calculate the hashes? Should I continue using the methods I found over on sourceforge?

I'm very unfamiliar with terms in general; when I say "starting point" I'm imagining just this method in md5.c from libcrypt :

void md5_init(union hash_state * md)
 md->md5.state[0] = 0x67452301; // are these values standard to begin with?
 md->md5.state[1] = 0xefcdab89;
 md->md5.state[2] = 0x98badcfe;
 md->md5.state[3] = 0x10325476;
 md->md5.curlen = md->md5.length = 0;

closed as off-topic by otus, fgrieu, SEJPM, yyyyyyy, K.G. Oct 29 '15 at 13:12

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  • $\begingroup$ I get your system hash 2675... only when I include a line return, which you would get if you echo ABCD... | md5sum. Are you including that in your code? For simplicity you might check against the empty string, whose md5 hash is d41d8cd98f00b204e9800998ecf8427e, reproduce with echo -n | md5sum. $\endgroup$ – engineerC Oct 29 '15 at 5:19
  • $\begingroup$ @otus I added what I meant by "starting point"; $\endgroup$ – ŽaMan Oct 29 '15 at 6:02
  • $\begingroup$ @CaptainMurphy I tried echo -ne ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz01234567890. | md5 and got 1926c36634965ee9d911cae458f6badb; edit: I see now what you mean regarding testing just an empty string. I get this for empty string on my implementation: 85bd946a585af9fd3fb9eda68707c1d8 $\endgroup$ – ŽaMan Oct 29 '15 at 6:03
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    $\begingroup$ I'm voting to close this question as off-topic because it's about debugging code. $\endgroup$ – otus Oct 29 '15 at 6:09
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    $\begingroup$ @qumonio, in that case the first thing I would look at is string encoding. You could ask on Stack Overflow if you have a particular issue you are not sure you got right. $\endgroup$ – otus Oct 29 '15 at 6:23

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