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Title: UNIX tools hash vs hashdeep Post by: tspacepilot on March 04, 2016, 07:03:12 PM On Unices that I use, there's md5sum and md5deep and md5:
Code: $ echo -n "foo" | md5 For sha, I see sha1sum and sha1deep, sha256sum and sha256deep, etc. From what I can tell, there's no difference between the output of md5 and md5deep. And the "sum" versions just adds a " -". Can anyone let me know what's going on with these variants of these hashing tools? Thanks in advance! Title: Re: UNIX tools hash vs hashdeep Post by: DannyHamilton on March 04, 2016, 08:21:32 PM https://en.wikipedia.org/wiki/Md5deep
Quote ...deep can be invoked in several different ways. Typically users operate it recursively, where md5deep walks through one directory at a time giving digests of each file found, and recursing into any subdirectories within. Its recursive behavior is approximately a depth-first search, which has the benefit of presenting files in lexicographical order. On Unix-like systems, similar functionality can be often obtained by combining find with hashing utilities such as md5sum, sha256sum... "deep" is a package that uses hashing functions (such as md5 or sha256) and adds additional functionality to apply the hashing function to sets of data (such as files in subdirectories). Title: Re: UNIX tools hash vs hashdeep Post by: tspacepilot on March 05, 2016, 08:11:07 PM Thanks DH. I guess I didn't turn up that wikipedia article in my searching, all I was finding was the online versions of the man pages. I did go ahead and try using md5deep on a directory, and it told me:
Code: $ md5deep ~/public_html/ I suppose there's some other way to take advantage of that recursiveness. In any case, I'm only actually hashing strings with these programs at the moment so effectively, I can expect the deep versions to be equivalent to the nondeeps. Thanks again for pointing me in the right direction. Title: Re: UNIX tools hash vs hashdeep Post by: DannyHamilton on March 05, 2016, 10:49:04 PM Code: $ md5deep ~/public_html/ I think you wanted to try: Code: md5deep -r ~/public_html/* |