base64, md5, etc

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zxcv
Guest

zxcv 11 Jan 2008, 09:37

is ther any library under windows that has hash/codes algs?
Im almost sure it is, ms always put lot of usless stuff in system. So whats its name?

11 Jan 2008, 09:37

MHajduk

Joined: 30 Mar 2006
Posts: 6113
Location: Poland

MHajduk 11 Jan 2008, 10:03

Some cryptographic stuff (eg. for calculating MD5 hash) you can find in 'advapi32.dll'.

11 Jan 2008, 10:03

AlexP

Joined: 14 Nov 2007
Posts: 561
Location: Out the window. Yes, that one.

AlexP 11 Jan 2008, 14:46

Yeah, or just make your own. Doesn't take much to make MD5 (which is already broken) or SHA-1 (which is considered broken by most people). I have SHA-1,SHA-224,SHA-256 coded in FASM, and if u want I can give u an MD5 by the end of the day Smile

Just ask for something, I'm home sick from school Confused

. Fever goin' around all over here. BTW, if u want a FASM implementation of the sequence of API's that u need to call, I'll post them here for u to use.
Okay, here's the process of API's u need to call if u want to use the Win implementations : (by doing so u call yourself a weakling Smile

)

Code:

CryptAquireContext > CryptCreateHash >  CryptEncrypt OR CryptHashData > CryptDestroyHash > CryptReleaseContext

There's other things like CryptGetHashParam for obtaining the hash, MSDN has all the doc's for them.

There's quite a bit u need to do, but only have to manage a few pointers to the CSP objects. I'll be happy to supply u with any of them, backdoor optional Smile

Almost done w/MD5, here in a few hrs after debug...

11 Jan 2008, 14:46

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 25 Jan 2008, 06:56

I think decard wrote a base64 lib, maybe also md5 (can't remember). Too bad his site is down. Anyone have it on-hand?

25 Jan 2008, 06:56

rugxulo

Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)

rugxulo 26 Jan 2008, 20:44

Found it! Hope this helps. Very Happy

Code:

Archive:  decard-base64.zip
  Length     Date   Time    Name
 -- ------    ----   ----    ----
        0  09/09/04 13:31   base64/
     3072  09/14/04 08:45   base64/base64enc.exe
        0  09/14/04 08:40   base64/source/
     4252  09/14/04 08:44   base64/source/base64.asm
       78  09/14/04 08:41   base64/source/base64.fpr
     6268  09/14/04 08:44   base64/source/cmdln.asm
     3670  09/14/04 08:44   base64/source/base64enc.asm
 --------                   -------
    17340                   7 files

Description:	decard's base64 library for FASM (w/ example)	Download
Filename:	decard-base64.zip
Filesize:	5.32 KB
Downloaded:	864 Time(s)

26 Jan 2008, 20:44

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