New answers tagged randomness
3
votes
The security of using a digital signature scheme twice with randomness
The scheme is insecure; someone can, with two valid signatures, generate a valid signature to a different message.
Suppose we have the signatures:
$(r, \sigma_0, \sigma_1)$ a valid signature for the ...
- 145k
1
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The security of using a digital signature scheme twice with randomness
This is a partial answer. The desired security goal (existential vs strong unforgeability or others?) hasn't been explicitly stated. Without restrictions, we can assume that (any) unforgeability is ...
- 2,868
1
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Why cant you use randomness to seed more randomness?
Why cant you use randomness to seed more randomness?
Obviously you can, that's what any (Cryptographically Secure) Pseudo Random Number Generator or (CS)PRNG does after all.
Could the resulting hash ...
- 91.9k
0
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Why cant you use randomness to seed more randomness?
I was looking into one-time-pads and am trying to figure out what would prevent you from generating an inf one-time-pad from a random seed.
One time pads.
Let me respond to a quote with another ...
- 15.2k
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