[Bitcoin-development] BIP32 - invalidation

2014-08-09 Thread second isogeny
Does anyone see any concerns when it comes to security of the proposed change? Yes. This proposal is less secure. It is incompatible in theory with existing implementations of the specification. The incompatibility is also a potentially a security problem because it may cause users to

Re: [Bitcoin-development] BIP32 - invalidation

2014-08-09 Thread Eric Lombrozo
Does bitcoin properly handle the case of a hash collision? no - because it is considered too unlikely. The case of I_L = n is also astronomically unlikely, so it's more a matter of improved performance and simpler data structures under expected circumstances and taking that less than 1 in 2^127