[Bitcoin-development] Proposal to change payment protocol signing

Jouke Hofman jouke at bitonic.nl
Tue Apr 29 16:44:12 UTC 2014


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We have BIP70 already in use (over a hundred paid requests).

Could you elaborate on why this needs changing?



On 28-04-14 14:39, Gavin Andresen wrote:
> There is a discussion about clarifying how BIP70 signs payment
> requests here: https://github.com/bitcoin/bips/pull/41
> 
> The issue is what to do with the signature field before signing.
> The code Mike and I initially wrote does this:
> 
> request.set_signature(string(""));
> 
> (sets signature to the empty string)
> 
> I think that is a mistake; it should be:
> 
> request.clear_signature();
> 
> (clears signature field, so it is not serialized at all).
> 
> So: if you are implementing, or have implemented, the payment
> protocol, please chime in. I'd like to change the spec and the
> reference implementation NOW, while BIP70 is still a 'Draft'.
> 
> Because this type of "hey, I'm implementing your standard and it
> doesn't work the way I think it should" mistake is exactly why BIPs
> take a while before being declared 'Final.'
> 
> 
> 
> 
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>
> 
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