SecurityRatty: The Cipher on the Wall

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The Cipher on the Wall

2007-05-24 00:00:00 by Ari Juels in Speaking of Security, the RSA Blog and Podcast

"The writing is on the wall for 1024-bit RSA," one trade publication has declared in response to the recent announcement of the successful factoring of a 307-digit (1017-bit) number. As 1024 bits is the length of many RSA keys used in practice today, a short journalistic leap of fancy raises the specter of imperiled retail transactions on the Web. If there is writing on the wall for 1024-bit RSA, though, what's written is in cipher--and it's wholly unclear how long the cryptanalysis will take.