Skip to main content
Cryptography

Questions tagged [x.509]

Ask Question

X.509 is a standard for a public key infrastructure used for authentication and access control. X.509 specifies standard formats for certificates, revocation lists, attribute certificates, and path validation.

14 questions
Newest Active Bountied Unanswered
2 votes
1 answer
241 views

I am trying to learn more about Crystals Kyber. I am playing around with a Java implementation. I am only focussing on Kyber-512 for now, I have locally changed the source code in order to remove the ...
Bart's user avatar
  • 123
0 votes
0 answers
25 views

I'm working on a project that involves broadcast (uni-directional) streaming and requires non-repudiation. Essentially, a device broadcasts a data stream over the air, and any receiving station needs ...
Jordan's user avatar
  • 131
1 vote
1 answer
349 views

I recently looked into the subject of public key cryptography (especially with X.509 certificates). I am the administrator of a web server using HTTPS which uses 2 levels of certificates (in addition ...
user avatar
1 vote
1 answer
1k views

I currently have a DER-encoded X.509 ECC SECP256K1 public key, also known as SubjectPublicKeyInfo (SPKI) from AWS KMS. How do I convert it to a 66 hexadecimal compressed public key string?
yijie's user avatar
  • 13
1 vote
3 answers
393 views

I want to create a self signed PKI for a couple servers I am running. I am finding tutorials with copy paste commands from openssl, and hand waving explanations that describe the general purpose of ...
Damian Games's user avatar
  • 11
2 votes
1 answer
244 views

I am a user requiring a legal signature to be installed on a SAP/R3 application. For the past few years a service provider provided a X.509 advanced signature certificate that could be exported as a <...
skvery's user avatar
  • 71
0 votes
0 answers
106 views

A general digital certificate issued by a CA might contain information about the individual/organization to whom the certificate belongs. As an example, consider this sample scenario: This PKC ...
Tabish Mir's user avatar
  • 258
1 vote
1 answer
780 views

I am really confused over PKCS. I saw this question but I do not have enough reputation to leave a comment so I am asking a new question to clarify. I am trying to understand what exactly PKCS and in ...
Finlay Weber's user avatar
  • 504
2 votes
0 answers
79 views

I've been working on the topic of certificates for a little while, and here is what I understand: A certificate is basically a public key + some data about the owner of the certificate + a signature ...
SPH's user avatar
  • 121
2 votes
1 answer
387 views

I'm aware of the multiplicative property of the textbook RSA and how it can be used to get a signature from a CA without having the CA directly signing it. My question is - can this apply to the real ...
shaqed's user avatar
  • 123
3 votes
2 answers
2k views

I read on wikipedia what is X.509: In cryptography, X.509 is a standard defining the format of public key certificates. X.509 certificates are used in many Internet protocols, including TLS/SSL, ...
Ced's user avatar
  • 605
0 votes
1 answer
473 views

In the pkcs#10 workflow to obtain the x.509 certificate used in digital signature, in the Certificate Request Information, itself in the CSR, we have the Subject Public Key. That Subject Public Key ...
T.Nel's user avatar
  • 103
3 votes
1 answer
3k views

Following the RFC 8446 it states that: RSASSA-PSS RSAE algorithms: Indicates a signature algorithm using RSASSA-PSS [RFC8017] with mask generation function 1. The digest used in the mask generation ...
user65677's user avatar
  • 65
3 votes
1 answer
2k views

I'm trying to understand the new PSS scheme, but having trouble figuring out how to parse it properly. When receiving a certificate with OID of RSASSA-PSS, how can I know which hash and signing ...
user65677's user avatar
  • 65