Re: SHA-1 chosen-prefix colission attack

From

Santiago Torres Arias <santiago@nyu.edu>

Date

Jan 7, 2020, 20:31 UTC

Message-ID

<20200107203147.r33c5plp5g7pmxmj@LykOS.localdomain>

In-Reply-To

<20200107173111.GB923852@alpha>

> > As a side result, this shows that it now costs less than 100k USD to
> > break cryptography with a security level of 64 bits (i.e. to compute
> > 264 operations of symmetric cryptography).

Just to clarify:

    As a stopgap measure, the collision-detection library of Stevens and Shumow [SS17]
    can be used to detect attack attempts (it successfully detects our attack).

At the end of section 7.0,