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Re: md5sum
From: |
Bob Proulx |
Subject: |
Re: md5sum |
Date: |
Wed, 28 Nov 2007 08:48:32 -0700 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
PHAM Cao Tam Dan AWL-T&P wrote:
> When I try a md5sum on a binary, the md5sum changes whether the
> sources were compiled at a moment or at another moment, and
> depending the machine where I compile. Hypothesis: sources are the
> same.
Some compilers encode a timestamp into the executable binary. This
timestamp causes every binary to be uniquely different and therefore
each will have a uniquely different md5sum.
You can verify this by compiling and saving two binaries and
comparing them. Utilities such as 'cmp' will report which bytes are
different.
Your email included a number of very annoying disclaimers. They are
useless and unenforceable. Many people refuse to reply to messages
that include them. In the future please consider using a different
email account from which to post messages. There are many free email
accounts available on the net.
Bob
- md5sum, PHAM Cao Tam Dan AWL-T&P, 2007/11/28
- Re: md5sum,
Bob Proulx <=