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Oct
29
answered How is bitslicing faster?
Oct
28
answered Why is “semantically secure” important for cryptosystems?
Oct
28
answered Pseudo random generator vs block encryption, which is faster?
Oct
27
answered Block Cipher Without Key Schedule?
Oct
23
answered Fast reduction in $GF(2^{128})$ using x86 `PCLMULQDQ`
Oct
21
answered Is there an existing cryptography algorithm / method that both encrypts AND compresses text?
Oct
19
answered Is there a difference between asking for a signature and asking for a decryption in challenge-response authentication?
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?