changing the default for --keyid-format [was: Re: getting an encrypted file to show what public key was used]

Sam Whited sam at
Tue May 29 20:05:18 CEST 2012

On Tue, May 29, 2012 at 1:47 PM, David Shaw <dshaw at> wrote:
> On May 29, 2012, at 11:51 AM, Daniel Kahn Gillmor wrote:
> What is your concern here, though - accidental or intentional collision?

Certainly both; while accidental collision isn't probable, 32-bit IDs
aren't exactly collision resistant either. This, coupled with the fact
that a nice GPGPU is now relatively inexpensive makes brute forcing
collisions not only possible, but relatively easy for a determined


Sam Whited
pub 4096R/FB39BCF7EC2C9934
sam at

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