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seen Dec 8 '11 at 13:49

Oct
10
answered Generating non-repeating N-bit IVs, which are indistinguishable from randomness
Sep
6
comment ANSI X9.31: the purpose of the date/time vector in the PRNG?
I known one requirement for prng is, that it's must be for an adversary impossible to detect that a prng is used to create random numbers. If the adversary is able to detect a cycle no matter if short or long he knows that a prng is used. But if he is not able to detect a cycle than he can not distinguish if a prng or a truer rng is used.
Sep
6
comment ANSI X9.31: the purpose of the date/time vector in the PRNG?
Is it maybe possible that dt vector prevent any cycle ?
Sep
6
asked ANSI X9.31: the purpose of the date/time vector in the PRNG?
Aug
22
comment Using an RSA private key simultanously as an AES encryption key to generate random numbers?
The RSA private key is generated on external device the reason is obviously: no true PRNG on my embedded device.
Aug
22
comment Using an RSA private key simultanously as an AES encryption key to generate random numbers?
>By the way, using the RSA private key as PRNG seed will not >help you when it comes to actually generating the RSA private >key itself. So either you generate the RSA private key >externally and import it into the device (e.g. as part of >factory initialization), or you have a problem. This might lead >to another problem, depending on your exact situation: if a >user can force the value of the RSA private key, then he can >predict the PRNG output. You do not give information on your >security model to know whether this can be an issue for you
Aug
19
awarded  Student
Aug
19
asked Using an RSA private key simultanously as an AES encryption key to generate random numbers?