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Oct
4
answered Is it secure to use TOTP with same key and different time-counters?
Sep
20
answered Is Encryption without knowing the input directly possible at all?
Sep
17
answered Signing and verifying message consisting of several parts
Sep
17
answered Does $(u_1=r_1\cdot x,\ \ w_1=r_1\cdot z, \ \ u_2=r_2\cdot x,\ \ w_2=r_2\cdot z)$ Leak Information?
Sep
17
answered Obtain 384 bits from a 256bit MasterSecret
Sep
16
answered Is there an upper bound to the private exponent in RSA?
Sep
16
answered Picking a nonce in the context of CCM (CTR with CBC-MAC) mode
Sep
16
answered How to prove that the Permutation cipher is not CPA secure?
Sep
14
answered Comparing two definitions of one-way function
Sep
3
answered CBC-MAC just to verify integrity
Aug
26
answered Can RSA be securely used for “blind decryption”?
Aug
26
answered Shamir Secret Sharing: Why cannot we recover polynomial's root if we have $t-1$ shares?
Aug
24
answered How can I handle the situation if key size is less than 64 bits in DES?
Aug
24
answered Encryption of 8 bit of block data
Aug
21
answered How does the birthday paradox apply to random keys?
Aug
2
answered Implementing CBC Encryption Using Decryption
Jun
25
answered Establishing encryption key using shared secret
Jun
24
answered Why does an algorithm need a keyspace?
Jun
23
answered Generating PGP key *without* random generator? (using fixed input only)
Jun
23
answered Does the One Time Pad rely on confusion or diffusion?