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Dec
17
revised Efficient way to confirm identity
added information posted as comments
Dec
17
reviewed Leave Open Efficient way to confirm identity
Dec
17
reviewed Leave Open Is it okay to use an HMAC of the plaintext and a (possibly distinct) key as the IV for symmetric cryptography?
Dec
16
reviewed Approve Translation of Schorr Ring Signature to ECSchnorr Ring Signature
Dec
15
reviewed Reviewed How “hard” it is to take an e'th root mod p?
Dec
15
revised How “hard” it is to take an e'th root mod p?
added 20 characters in body
Dec
15
revised Security analysis of this one time password based scheme for copy protection
bolded the important part of the answer
Dec
15
comment Cyclic group collision resistant keyed cryptographic hash function
Please post text rather than an image. An image is hard to read at the wrong resolution, impossible to read if you're blind, impossible to search, impossible to copy from… You can use mathematical notations with MathJax's LaTeX-like syntax.
Dec
14
reviewed Reviewed Hash functions vs Stream Ciphers in terms of Speed
Dec
14
comment Hash functions vs Stream Ciphers in terms of Speed
I don't understand your revised question better than the original. If you want variable-sized output, what does this have to do with a hash? You seem to be asking which is faster, an apple or an orange.
Dec
14
revised Security analysis of this one time password based scheme for copy protection
added 1026 characters in body
Dec
14
reviewed Reviewed How to determine if padding has been used while encrypting a message with RSA?
Dec
14
reviewed Reviewed Historic Authentication Schemes Before Computers
Dec
14
revised Historic Authentication Schemes Before Computers
made the answer more self-contained
Dec
14
reviewed Close What do you mean by Ciphertext indistinguishability
Dec
14
reviewed Leave Open Public key exponent coprime with totient proof
Dec
14
reviewed Leave Open Non-deniability of data sent over TLS
Dec
14
reviewed Reviewed Cost of attack on DSA with attack on DLP
Dec
14
revised Cost of attack on DSA with attack on DLP
added 19 characters in body
Dec
14
answered Security analysis of this one time password based scheme for copy protection