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seen 11 hours ago

Security and Crypto Technologist


Nov
24
accepted Can we give access to controlled functionality in Fully homomorphic encryption schemes?
Nov
24
accepted Can we decrypt in this order when the message is encrypted twice?
Nov
24
accepted Is there a relation between security of rounds of DES and Luby Rackoff rounds?
Nov
24
accepted What is the difference between various modes in FPE?
Nov
24
answered Is there a cryptographic method to add noise to a plaintext instead of actually encrypting it?
Nov
22
comment Authentication of machine before installation (to stop piracy)
@supra , its difficult to see the connection , but let me explain , the moment you copy the software its beyond your hands you cant prevent from any one doing anything withit especially if its running it . the prevention might come from preventing copying the file itself which is impossible. Most of the licensing software fail here even if you tie the installation with MAC address too, there is nothing one could do it can be spoofed easily
Nov
21
comment Authentication of machine before installation (to stop piracy)
@e-sushi does not matter it boils down to the same
Nov
21
comment Authentication of machine before installation (to stop piracy)
"Trying to make digital files uncopyable is like trying to make water not wet" Bruce Schneier !
Nov
21
asked how to truncate a PRF on n bits to PRF on t bits where t < n?
Nov
19
accepted Can we build authenticated encryption using Feistel Networks?
Nov
18
asked Can we build authenticated encryption using Feistel Networks?
Nov
16
comment How practical is proxy re-encryption for AES?
i wanted practical ones its ok if they are obvious ;)
Nov
16
accepted How practical is proxy re-encryption for AES?
Nov
16
answered How practical is proxy re-encryption for AES?
Nov
16
comment Is it possible to actually verify a “sponge function” security claim?
good job in providing your learnings and details
Nov
13
comment How should we interpret the cryptanalysis results of SIMON and SPECK?
Oh ok , what about SIMON ? or in general what to look for when interpreting cryptanalysis results
Nov
13
asked How should we interpret the cryptanalysis results of SIMON and SPECK?
Nov
12
answered What is the difference between various modes in FPE?
Nov
12
revised What is the difference between various modes in FPE?
edited title
Nov
12
answered How does secret sharing solve the partial exposure problem?