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May
19
answered Do hand-based hash functions / MACs exist?
May
19
answered Is the hash function defined in this exercise collision-resistant?
May
8
answered How can I map arbitrary group elements to unique integers without using Hash functions?
May
8
answered Discrete logarithm over prime modulo: small input, large exponent, larger prime
May
5
answered Encrypt file name
Apr
30
answered Are well designed crypographic codes unbreakable? (NOT ciphers)
Apr
29
answered Integer encryption preserving equality
Apr
29
answered Zero knowledge / proof of knowledge sudoku solution
Apr
28
answered How to attack the Two Time Pad?
Apr
28
answered Is a padding oracle attack possible if data is only encrypted internally on a server (e.g. for storage)?
Apr
27
answered Bilinear map + commitment
Apr
27
answered Paillier cryptosystem preserve ordering of sums for two integer sequences
Apr
23
answered Why use randomness in digital signature algorithms?
Apr
22
answered Super-simple encryption of short strings
Apr
20
answered Different keys for clients but 1 key on server
Apr
15
answered Asymmetric encryption that is secure for (almost) any foreseeable future
Mar
30
answered Would the Fiat Shamir identification scheme be more secure if I design it with an exponents higher than 2?
Mar
30
answered Is this a valid scheme to authenticate through a 'human-readable' certificate?
Mar
25
answered Does perfect secrecy imply uniform ciphertext distribution?
Mar
23
answered Should I remove these use cases of MD5/SHA1 from my program?