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Jul
28
revised Vigenère cipher: Security when key length and plaintext length are the same
added 102 characters in body
Jun
24
revised Choose a random number that is different from a bunch of other secret numbers
revised my statement
Jun
23
revised In public key cryptography, how many keys are required for secure communication between n parties?
removed "cryptanalysis" tag
Jun
12
revised Given $n$ bits, how many “truly random” sequences/numbers can be constructed?
added 887 characters in body
Jun
3
revised One Time Pad for large changing files
added 210 characters in body
May
23
revised weaknesses in ElGamal with public key of small order
homework tag
Apr
17
revised Is ElGamal still unforgable if the adversary knows r
formatting and latex
Apr
10
revised What are some disadvantages of homomorphic encryption schemes?
Changed first sentence, due to comment.
Mar
27
revised Times of nested algorithms in proofs of security
added 1176 characters in body
Mar
24
revised how to use salt to sign a message and how is it effective?
looks like homework, and fixed 1 typo
Mar
14
revised Why does SHA-1 have 80 rounds?
minor fixes
Mar
14
revised Why does SHA-1 have 80 rounds?
minor fixes
Mar
13
revised How is a public key actually used to encrypt something?
added fgrieu's comment about not using textbook RSA.
Jan
14
revised Why is the discrete logarithm problem assumed to be hard?
added 387 characters in body
Jan
9
revised Why does DSS have such formulas?
added 1 characters in body
Dec
17
revised Attacks against El Gamal private key
corrected NFS part of the answer
Dec
6
revised Why are these techniques not feasible to crack RSA?
added 145 characters in body
Nov
4
revised Is this hand cipher any more secure than the Vigenère cipher?
added 1959 characters in body
Oct
21
revised Estimating random number entropy for input into 256 bit hash
added 558 characters in body
Oct
17
revised Is there way to combine secrets first and later split them?
espanded the first paragraph