Why a 40 bit key?
Does the US government still restrict the number of bits allowed in public keys? I seem to remember the GSM A5 algorithm was first broken in the US because the ki was restricted to a lower number of bits than in Europe. Something like 56 instead of 64, to allow the government an easier job of cracking it if necessary.
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Why a 40 bit key? Does the US government still restrict the number of bits allowed in public keys? I seem to remember the GSM A5 algorithm was first broken in the US because the ki was restricted to a lower number of bits than in Europe. Something like 56 instead of 64, to allow the government an easier job of cracking it if necessary.