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seen Mar 20 at 18:46
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Mar
11
 comment Can one detect if two pairs of elements in Zp have the same exponential relation?
@poncho: Thanks
Mar
11
 accepted Can one detect if two pairs of elements in Zp have the same exponential relation?
Mar
11
 comment Diffie-Hellman key agreement with both Server Authentication and Perfect Forward Secrecy
Step 4 is ambiguous, as some other steps. IMHO you should write a technical paper and publish it. Even in that case, analyzing a transport protocol is not an easy task, so it's rarely done for free.
Mar
11
 comment Diffie-Hellman key agreement with both Server Authentication and Perfect Forward Secrecy
You're leaving out of the description many important details that are relevant to the protocol security, such as how the message length is sent. Is it encrypted? How? Is is sent in clear text? How is padding specified? It's specified by the AE method used or by any other means?
Mar
11
 answered Diffie-Hellman key agreement with both Server Authentication and Perfect Forward Secrecy
Mar
11
 comment Can one detect if two pairs of elements in Zp have the same exponential relation?
Great pointer! thanks!
Mar
11
 comment Can one detect if two pairs of elements in Zp have the same exponential relation?
@poncho: Could you clarify, in your equivalence between my problem and DDH, which is g,a,b and c from x1,x2,y1,y2,k1,k2?
Mar
9
 asked Can one detect if two pairs of elements in Zp have the same exponential relation?
Feb
28
 awarded  Nice Question
Feb
24
 comment Why nobody considers counter re-keying as a standard Block Cipher Mode?
I inserted the word "standard" in the question.
Feb
24
 revised Why nobody considers counter re-keying as a standard Block Cipher Mode?
edited title
Feb
23
 revised How hard is a known prefix hash preimage attack?
deleted 23 characters in body
Feb
23
 asked How hard is a known prefix hash preimage attack?
Feb
22
 comment Why nobody considers counter re-keying as a standard Block Cipher Mode?
@CodesInChaos: Great!
Feb
22
 accepted Why nobody considers counter re-keying as a standard Block Cipher Mode?
Feb
22
 comment Why nobody considers counter re-keying as a standard Block Cipher Mode?
CodesInChaos: What is k? Can you describe the said multi-target attack more clearly? Maybe add some links? thanx
Feb
22
 asked Why nobody considers counter re-keying as a standard Block Cipher Mode?
Jan
28
 revised How is the x coordinate of a “point at infinity” encoded in a Secp256k1 signature?
added 301 characters in body; edited title
Jan
28
 asked How is the x coordinate of a “point at infinity” encoded in a Secp256k1 signature?
Nov
2
 comment Is there a practical zero-knowledge proof for this special discrete log equation?
@RickyDemer: Ok, question corrected.
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