network profile
| bio | website | |
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| location | ||
| age | ||
| visits | member for | 1 year, 11 months |
| seen | Dec 25 '12 at 14:35 | |
| stats | profile views | 12 |
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Dec 22 |
awarded | Critic |
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Dec 22 |
comment |
AES key length greater than 256 bits - is it dangerous to do an implementation outside of the standard? hunter: r.e. the other code that's assuming things about the key length: I was looking at things like line 264: if( Nk > 6 && idx % Nk == 4 ). I understand what it's doing for standard values for Nk (where Nk is the number of 32-bit words in the key), but it's clearly not just the obvious extension of AES for longer keys. |
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Dec 22 |
answered | AES-GCM and its IV/nonce value |
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Dec 19 |
comment |
tower of extension field Your twisted curve is over $q^6$, no? So a point on it would be expressed in the form ((a,b),(c,d),(e,f)), ((g,h),(i,j),(k,l)). (That is, an (x,y) pair of triplets of pairs). The function that maps a point on the twist curve to the point on the normal curve over $q^{12}$ is the group homomorphism. The homomorphism in the paper above is (x,y) -> (ω²x, ω^3y), but yours may vary. |
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Dec 19 |
comment |
AES key length greater than 256 bits - is it dangerous to do an implementation outside of the standard? Via that link, on line 251 (code.google.com/p/as3crypto/source/browse/trunk/as3crypto/src/…) the code is setting the number of rounds based on the size of the key. There is other logic in that function that assumes a standard key length. I think that fact that it doesn't check the key length is a bug and, by using a non-standard one, you're using a custom variant of AES that has never been studied. |
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Dec 19 |
answered | AES key length greater than 256 bits - is it dangerous to do an implementation outside of the standard? |
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Dec 19 |
answered | tower of extension field |
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Jul 12 |
awarded | Yearling |
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Aug 28 |
awarded | Enlightened |
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Aug 28 |
awarded | Nice Answer |
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Aug 2 |
awarded | Beta |
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Jul 18 |
answered | Is it possible to create an asymmetric cryptosystem where the private keys are not easily verifiable as such? |
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Jul 14 |
awarded | Supporter |
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Jul 13 |
answered | Protocol to generate Client Certificates at the start of a SSL session automatically? |
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Jul 12 |
awarded | Editor |
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Jul 12 |
revised |
How to provide secure “vanity” bitcoin address service? Change from ** to ^ |
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Jul 12 |
awarded | Teacher |
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Jul 12 |
answered | How to provide secure “vanity” bitcoin address service? |
