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Security and Crypto Technologist


Oct
15
comment Is there way to combine secrets first and later split them?
@Reid the resultant combined string length should be less than string length of combined strings concatenated plainly.
Oct
15
comment Is there way to combine secrets first and later split them?
added additional details , basically i want to pack two strings first and later i may split them into their original forms
Oct
15
revised Is there way to combine secrets first and later split them?
additional info
Oct
15
asked Is there way to combine secrets first and later split them?
Oct
10
accepted what are the uses of tweaks in block ciphers?
Oct
9
comment what are the uses of tweaks in block ciphers?
@CodesInChaos i did not get the use of blockid as tweak ? how does it help in disk encryption ?
Oct
9
comment what are the uses of tweaks in block ciphers?
thanks i checked that question before posting , it did not have the answer for my question
Oct
9
asked what are the uses of tweaks in block ciphers?
Oct
4
accepted Difference between salted hash and keyed hashing?
Oct
4
awarded  Yearling
Oct
3
asked Difference between salted hash and keyed hashing?
Sep
10
accepted General-purpose non-interactive multi-party computation protocol
Sep
10
comment General-purpose non-interactive multi-party computation protocol
Interesting but this is one the case. but not generalized SMC, you would find secret sharing scheme to be heart of SMC in most protocols , refer martin giesler's mpc thesis .
Sep
10
comment General-purpose non-interactive multi-party computation protocol
give me reference. without a dealer how is the secret shared ? ideally , each party gets results from others and collates itself if it requests the function evaluation
Sep
10
revised General-purpose non-interactive multi-party computation protocol
better explanation
Sep
10
comment General-purpose non-interactive multi-party computation protocol
yes clients get the partial results via secure channels
Sep
10
comment General-purpose non-interactive multi-party computation protocol
edited the question accordingly for more clarity .
Sep
10
revised General-purpose non-interactive multi-party computation protocol
better explanation
Sep
9
comment General-purpose non-interactive multi-party computation protocol
the dealer is who distributed the shares to each server , say a client distributes the shares among servers , once the protocol of function evaluation is over, all the partial results are collated by client . in a non-interactive protocol servers should not talk to each other
Sep
9
comment General-purpose non-interactive multi-party computation protocol
non-interactive means, the parties don't interact with each other. only the dealer gets all the partial results and collates them . if we use Shamir's scheme , the parties would need to interact for degree reduction while multiplication, for addition they need not ofcourse .