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Blanco
  • Member for 6 years, 9 months
  • Last seen more than a month ago
  • China
97 votes
4 answers
45k views

Does Schnorr's 2021 factoring method show that the RSA cryptosystem is not secure?

11 votes
2 answers
1k views

What is the relation between the existence of a cryptographic hash function and the existence of a PRG?

7 votes
0 answers
112 views

Is there a standard definition of non-malleability for the encryption schemes?

6 votes
2 answers
4k views

What is the relation between computational security and provable security?

4 votes
1 answer
433 views

How to define the statistical distance between two functions?

4 votes
2 answers
693 views

Can the key-generation algorithm always be uniform?

4 votes
2 answers
265 views

Is there a computational security of public-key encryption which is similar to the one of symmetric key encryption

4 votes
1 answer
173 views

Is there an adaptive version of LWE assumption with respect to some potentially non-uniform secret distribution?

3 votes
2 answers
301 views

How to define a FHE scheme whose plaintext space is infinite using boolean circuits?

3 votes
1 answer
99 views

Is there a way to double the size of ciphertexts of a public-key scheme which is IND-CCA2

3 votes
1 answer
248 views

Relationship between the (provable) security and the size of the plaintext space

3 votes
5 answers
471 views

Is there a definition of the pseudo-random sequences like PRG or PRF in cryptography?

3 votes
2 answers
119 views

Why is the security level defined by $\log _{2} \inf \{ t_{i}/\varepsilon_{i} \mid i \in I \}$

2 votes
1 answer
329 views

The security level of double encryption

2 votes
1 answer
76 views

Why is the function $f$ one of the inputs of the verification algorithm in homomorphic signature?

1 vote
2 answers
557 views

How do signatures or MACs achieve authenticity, integrity or non-repudiation´╝č

1 vote
1 answer
263 views

Is there a LWE based public-key encryption scheme which is CCA1-secure?

1 vote
1 answer
173 views

Are the signcryption and the authenticated encryption same?

1 vote
1 answer
75 views

The existence of OWFs vs $\mathbf{EXP} \neq \mathbf{BPP}$

1 vote
0 answers
133 views

Is bit encryption enough?

1 vote
1 answer
277 views

How to define the statistical distance between two probabilistic algorithms?

0 votes
1 answer
889 views

How does the challenger choose the message randomly in the one-wayness security game of PKE?

0 votes
1 answer
122 views

The differences between the attackers in the definitions of IND-ATK and NM-ATK

0 votes
1 answer
366 views

Is there an application of fully homomorphic encryption scheme such that encryption key and evaluation key are different?

0 votes
1 answer
56 views

Why do a pair of interactive machines have a common input?

0 votes
0 answers
59 views

How much information of the length of a plaintext can an adversary get from its ciphertext?