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seen 12 hours ago

Security and Crypto Enthusiast


Apr
12
comment Basic Encryption Tests
do u mean , theoretical tests ? or practical tests ?
Apr
11
comment After heartbleed, how can you safely distribute new certs?
everything should be in memory , in some point of time !
Apr
7
answered How could Fully Homomorphic Encryption support power operations?
Mar
4
comment Any practical uses of machine learning for cryptography?
ah ! learning with errors is good example , did not strike me thanks for that
Mar
4
comment Any practical uses of machine learning for cryptography?
would be interested if some body is doing this or want to do this . please reach out to me .
Feb
25
revised PRP, PRF and modular arithmetic
more clarity
Feb
25
comment PRP, PRF and modular arithmetic
I believe , what could be found out from google , can be left for seekers exercise and save some time of one who answers it.
Feb
24
answered PRP, PRF and modular arithmetic
Feb
21
comment Which gives better deterministic encryption SIV or Plain ECB mode?
@pg1989 yes got it . so i dont have length preservation as criteria . the output could be longer .
Feb
19
comment Which gives better deterministic encryption SIV or Plain ECB mode?
Imagine some data type that is 128 bits like say IPv6 address and for some reason i want to encrypt it deterministically.
Feb
19
revised Which gives better deterministic encryption SIV or Plain ECB mode?
more clarity
Feb
19
comment Which gives better deterministic encryption SIV or Plain ECB mode?
ok i meant message and block as same . let me edit the question
Feb
19
comment Which gives better deterministic encryption SIV or Plain ECB mode?
same holds good for ECB mode too .
Feb
19
accepted Security of Deterministic Encryption Scheme
Feb
19
asked Which gives better deterministic encryption SIV or Plain ECB mode?
Feb
13
comment Pseudo random permutation for arbitrary size domains
my last suggestion of , Feistel Networks + Cycle walking should help . please "PRP Luby Rack off revisited" by Naor and Reingold .
Feb
12
comment Pseudo random permutation for arbitrary size domains
@PaŭloEbermann using FPE with AES-NI is comparable speeds with AES-NI. Feistel networks with 10 or so rounds with AES-NI hardly slows it down .
Feb
12
answered Pseudo random permutation for arbitrary size domains
Feb
12
comment Should tweak be unique per message?
well that is not the point , the TBC can be used in any mode, it is just a block cipher with additional input tweak , for all practical purposes its block cipher and can be used in any mode .
Feb
11
answered Should tweak be unique per message?