Tagged Questions
0
votes
1answer
48 views
Certificate == signed public key
For primes p and q used to create a keypair, I understand that the following operation is used to create a signature :-
M ^ d (mod N)
where d and N have their usual meanings and M is the message. In ...
3
votes
2answers
716 views
How do digital certificates work, and why is it not possible to reverse engineer one from a signed file?
Digital certificates are used quite commonly these days, for signing files. They are used by various operating systems to ensure reliability and security. For example, Android requires that each of ...
3
votes
2answers
1k views
Difference between “Signature Algorithm” and “Signature Hash Algorithm” in X.509
What's the difference between the "Signature Algorithm" and the "Signature Hash Algorithm" found in an X.509 certificate? Why does it need a "Signature Hash Algorithm"?
Edit:
I'm creating the ...
4
votes
2answers
200 views
X.509 CSR: Why does CA remove signature?
I just read this article on Wikipedia: Certificate Signing Request
I'm not a PKI or Crypto expert. As I understand, a CSR (certification request) is always signed by the PKCS#10-Request creator.
...
6
votes
1answer
635 views
Why does the PKCS1 RSA private key structure contain more than just exponent and modulus?
The ASN.1 spec for the PKCS1 RSA private key format is as follows:
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6
votes
1answer
1k views
How do other, non-RSA algorithms, compare to the PKCS #1 standard?
Arguably the PKCS suite of standards have a profit-oriented bias as they are promoted by RSA and promote their algorithms over others in the form of RFCs and other means.
I'm considering the ...
