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  • 0 posts edited
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  • 19 votes cast
Jan
6
revised Size of a MAC for a quickly checked message?
deleted 1 character in body
Jan
5
comment Size of a MAC for a quickly checked message?
@yyyyyyy "My point was that you potentially have to defend against attackers who use a lot more computing time than one second" Maybe. Anyway, the date included in the message has to be at most one second earlier than the current time.
Jan
2
comment Size of a MAC for a quickly checked message?
Yes we can assume there is a date in the message. @CodesInChaos To be safe I should use 14 bytes (112 bits), why 16 bytes is sufficient when we have a delay of one second ? Where can we find recommandations for this kind of application ? Thank you
Jan
2
asked Size of a MAC for a quickly checked message?
Dec
1
comment Requirement for the length of a HMAC tag?
Thanks. "as long as it is a short lived message, such as a network packet that will be verified less than a second after it is transmitted". Where can we find this kind of requirements ? NIST ?
Nov
30
comment Requirement for the length of a HMAC tag?
so, for HMAC I can truncate to 96 bits and still have something "currently" secure ?
Nov
30
asked Requirement for the length of a HMAC tag?
Nov
5
comment The use of the term “sound” in cryptography
Ok, thank yout for your answer.
Nov
4
asked The use of the term “sound” in cryptography
Oct
20
comment Security of chameleon hash functions
Ok, I've understood. Thank you very much.
Oct
20
accepted Security of chameleon hash functions
Oct
20
asked Security of chameleon hash functions
Oct
9
comment Breaking RSA moduli
Thank you fgrieu.
Oct
9
comment Breaking RSA moduli
I was speaking about factoring.
Oct
9
accepted Breaking RSA moduli
Oct
9
comment How exactly does AES-NI work?
Why AES-NI with CTR provide a 10X improvement and with CBC just a 2-3X ? Maybe you assume that CTR encryption implementation is multithreaded while CBC encryption can't ?
Oct
9
asked Breaking RSA moduli
Sep
29
accepted Keccak and compression functions
Sep
29
comment Hash function and indifferentiability
Thank you. Sorry, I've found an answer in this post crypto.stackexchange.com/questions/5607/…
Sep
27
comment Keccak and compression functions
Thank you. What about other hash functions like Md6, Skein, Shabal, Blake... ?