Re: [cryptography] Regarding Zerocoin and alternative cryptographic accumulators

2013-05-15 Thread Jane
Hi Adam, Matthew! Thanks for the reply. So, basically, the main obstacle to practical implementation would be constructing efficient ZKPs with the Lipmaa accumulator, while from a theoretic standpoint there is also the issue that the scheme being used is somewhat exotic and needs more academic

Re: [cryptography] A new (hopefully silly) Zerocoin/accumulator question

2013-05-15 Thread Natanael
From what I have read, and as far as I have understood it, your zero-knowledge proofs are linked to a specific state of your choice. In other words, you prove that your Zerocoin mint was one of a certain set of Zerocoin mints. One can ONLY test the zero-knowledge proof against that set (since you

Re: [cryptography] side channel analysis on phones

2013-05-15 Thread Jeffrey Walton
On Fri, Mar 8, 2013 at 2:57 AM, ianG i...@iang.org wrote: Has anyone done any side channel analysis on phones? I'm working on an android crypto app at the moment, and an unanswered question from the threat model is how to limit the possibilities of attacking the keys from another app. I can