Re: [Cryptography] P=NP on TV

2013-10-07 Thread David Johnston
On 10/6/2013 12:17 PM, Salz, Rich wrote: Last week, the American TV show Elementary (a TV who-done-it) was about the murder of two mathematicians who were working on proof of P=NP. The implications to crypto, and being able to crack into servers was covered. It was mostly accurate, up until

Re: [Cryptography] Sha3

2013-10-04 Thread David Johnston
On 10/1/2013 2:34 AM, Ray Dillinger wrote: What I don't understand here is why the process of selecting a standard algorithm for cryptographic primitives is so highly focused on speed. ~ What makes you think Keccak is faster than the alternatives that were not selected? My implementations

Re: [Cryptography] [cryptography] Random number generation influenced, HW RNG

2013-09-09 Thread David Johnston
User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/20130801 Thunderbird/17.0.8 Reply-To: jam...@echeque.com On 2013-09-08 3:48 AM, David Johnston wrote: Claiming the NSA colluded with intel to backdoor RdRand is also to accuse me personally of having colluded with the NSA in producing

Re: RNG using AES CTR as encryption algorithm

2009-09-08 Thread David Johnston
NIST doesn't provide specific KAT vectors for AES-CTR because the results depend on your specific counter construction. When you interact with a FIPS test lab, you will provide them with your counter construction, they will provide you with the KATs and you will then test to those KATs. This

Re: Can you keep a secret? This encrypted drive can...

2006-12-04 Thread David Johnston
Leichter, Jerry wrote: | Jon Callas wrote: | | | Moreover, AES-256 is 20-ish percent slower than AES-128. | Compared to AES-128, AES-256 is 140% of the rounds to encrypt 200% as much | data. AES-256 has a 256-bit key but exactly the same 128-bit block as AES-128 (and AES-192, for that

Re: Can you keep a secret? This encrypted drive can...

2006-12-03 Thread David Johnston
Jon Callas wrote: Moreover, AES-256 is 20-ish percent slower than AES-128. Compared to AES-128, AES-256 is 140% of the rounds to encrypt 200% as much data. So when implemented in hardware, AES-256 is substantially faster. AES-256 - 18.26 bits per round AES-128 - 12.8 bits per round I

Re: ISO rejects WAPI (for now)

2006-03-16 Thread David Johnston
Joachim Strombergson wrote: Aloha! I don't know if you have seen this, but ISO rejected the WAPI standard proposal, opting instead for 802.11i/WPA2. http://eet.com/news/design/business/showArticle.jhtml?articleID=181502994 How terrible, AES instead of the secret sauce-cipher. ,-) WAPI is