Ingo Klöcker wrote: > On Tuesday 14 December 2010, Robert J. Hansen wrote: >> Off by about a factor of 100 there. RSA-2048 is roughly equivalent >> to a 112-bit symmetric key; RSA-1024 is roughly equivalent to an >> 80-bit key. 32 bits of difference equals a factor of four billion. >> It's way harder than you think. > > Those equivalences have been mentioned a few times. Is there a good > (freely available) reference for this? Thanks in advance!
In the "multiple subkeys and key transition" thread, I wrote on 12/9/2010 at 16:28 (US/Central): +> How do elliptic curves compare to RSA today? +> +> From the National Institutes of Science and Technology (one of the gold +> standards for engineering know-how): +> +> RSA ECC Sym +> 1024 160 80 +> 2048 224 112 <+ +> 3072 256 128 +> 7680 384 192 +> 15360 512 256 +> +> These recommendations can be found on page 63 of NIST Special +> Publication 800-57, Recommendations for Key Management, Part I. 2nd Revision, +> 8 Mar, 2007. +> [http://csrc.nist.gov/publications/nistpubs/800-57/sp800-57-Part1-revised2_Mar08-2007.pdf] > -- John P. Clizbe Inet:John (a) Mozilla-Enigmail.org FSF Assoc #995 / FSFE Fellow #1797 hkp://keyserver.gingerbear.net or mailto:pgp-public-k...@gingerbear.net?subject=help Q:"Just how do the residents of Haiku, Hawai'i hold conversations?" A:"An odd melody / island voices on the winds / surplus of vowels"
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