On Mon, Sep 16, 2013 at 05:46:26PM +0200, Raimo Niskanen wrote: > On Mon, Sep 16, 2013 at 02:25:58PM +0000, Christian Weisgerber wrote: > > Raimo Niskanen <[email protected]> wrote: > > > > > A resembling application is the Git version control system that is > > > based on the assumption that all content blobs can be uniquely > > > decribed by their 128-bit SHA1 hash value. > > ^^^^^^^^^^^^^^^^^ > > ... 160-bit SHA1 hash... > > And now I just read on the Wikipedia page for SHA-1 that a theoretical > weakness was discovered in 2011 that can find a collision with a > complexity of 2^61, which gives a probability of 10^-18 still > 1000 times better than a hard drive of 10^-15.
A little knowledge is a dangerous thing. "weakness" in a cryptographic setting doesn't mean *anything* if you're using it as a pure checksum to find out accidental errors.
