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| seen | Oct 18 '12 at 9:51 | |
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Oct 17 |
awarded | Editor |
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Oct 17 |
revised |
Are there secure stream ciphers that cannot be parallelized? added 44 characters in body |
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Oct 17 |
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Are there secure stream ciphers that cannot be parallelized? Thank's for this answer, very informative, it even goes in depth into different ways the question could be interpreted. |
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Oct 17 |
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Are there secure stream ciphers that cannot be parallelized? Thank's for your comment about time, it's good to have in mind. But I still think that's the best term for the question. Time may not be a usable quantity of cryptographic algorithms, but it is a very usable quantity of practical applications of them. I thought of using some other term such as "work", but explaining parralellism with that seemed just so inflexible. (Which "work" I would've meant, etc.) |
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Oct 17 |
awarded | Scholar |
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Oct 17 |
awarded | Supporter |
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Oct 17 |
accepted | Are there secure stream ciphers that cannot be parallelized? |
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Oct 16 |
awarded | Student |
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Oct 16 |
comment |
Are there secure stream ciphers that cannot be parallelized? In the design of this question, both the "attacker" and "user" start with the same known initial cipher state, (same "key", if you will). I only want it reliably taking long time to get from the initial state to some specific state in the future (x many bits from the start of the stream.) (So to answer your question, primarily for the attacker, but the design doesn't give the user any more information than the attacker so it's going to be slow for the user also.) |
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Oct 16 |
comment |
Are there secure stream ciphers that cannot be parallelized? (The problem is not completely finalized yet, I have to know if all the components work forst :). About the random-access schemes: do they exist even for true stream ciphers, like RC4? Is there a cipher that doesn't parralellize and doesn't have any random access possibility? |
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Oct 15 |
asked | Are there secure stream ciphers that cannot be parallelized? |