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Apr
18
reviewed Leave Open Why does applying 56-bit DES twice only give 57 bits of security?
Apr
18
reviewed No Action Needed suitable method for encryption and decryption
Apr
18
reviewed No Action Needed Proving that a plaintext is the Paillier decryption of a certain ciphertext
Apr
18
reviewed No Action Needed Why does applying 56-bit DES twice only give 57 bits of security?
Apr
18
reviewed No Action Needed Retrieve value of private key after encryption with the public key
Apr
18
reviewed Reviewed Unlock my ZipCrypto deflate
Apr
18
reviewed No Action Needed Using HMAC SHA256 to protect payment files in local trusted network
Apr
18
answered Length of prime number used in Pedersen Commitment
Apr
18
comment Is chaotic encryption secure?
The proof of the pudding is in the eating, and the proof of the cryptosystem is in the cryptanalysis. Until I see a chaos-based system undergo cryptanalysis by someone who knows what they're doing, I don't see any reason to trust it.
Apr
17
answered What does L_n is the bit length of the group order n states need for my calculation in ECDSA algorithm?
Apr
17
answered Combining cascaded encryption keys into one key
Apr
17
answered Is authentication length always a subset of encryption length?
Apr
17
reviewed No Action Needed Vigenère, auto-correlation vs Kasiski examination
Apr
17
reviewed No Action Needed Given a message and signature, find a public key that makes the signature valid (ECDSA)
Apr
16
comment Key space vs Cardinality of 1024-bit RSA
Actually, the keyspace would be the set of prime pairs between $2^{511}$ and $2^{512}$. Actually, it's somewhat less, because we insist that the product be between $2^{1023}$ and $2^{1024}$. The set of prime pairs between $2^{511.5}$ and $2^{512}$ is one way to evaluate it.
Apr
16
comment Key space vs Cardinality of 1024-bit RSA
Actually, for 1024-bit RSA, the primes generated will typically be 512 bits each...
Apr
16
comment Are keys generated by the user or block cipher algorithms themselves?
How key generation is done is a very broad topic; there are lots of ways it can be done, and as far as the block cipher algorithm is concerned, it's done by someone else.
Apr
16
reviewed Close Are keys generated by the user or block cipher algorithms themselves?
Apr
16
reviewed Close Finding Vignere Cipher key
Apr
16
reviewed Leave Open why are both ipad and opad required for HMAC?