Before you trust what the server is telling you (e.g. OCSP stapling), you want to trust that server in the first place, hence why OpenSSL might be verifying the server's cert first, making sure it's a valid and trusted certificate at all. Then, assuming the certificate looks valid, you would want to see if it's been revoked -- and that's when you'd handle/process the stapled OCSP response.

24/03/2017 · I have deployed basic ocsp server from OpenSSl Cookbook by Ivan Ristic page 44 with following command $ openssl ocsp -port 9080 -index db/index -rsigner root-ocsp.crt -rkey private/root-ocsp.key -CA root-ca.crt -text Certs have following chain root-ca -> root-ocsp and root-ca -> sub-ca -> server and I want to request status of server.crt. I'm implementing an OCSP server to answer OCSP requests for my custom CA. I already implemented the invalidation of leaves certificates, with the intermediate CA certificate signing the OCSP response, and it seems to be working. However, I have troubles implementing the OCSP response to invalidate a intermediate certificate. 27/05/2020 · Using OCSP, an application makes a connection to an OCSP responder and requests the status of a certificate by passing the certificate’s serial number. The responder replies “good,” “revoked,” or “unknown.” A “good” response indicates that the certificate is valid, so far as the responder knows. This does not necessarily mean that the certificate was ever issued, just that is 2/05/2018 · For example, OCSP responders that do not have access to authoritative records for a requested certificate, such as those that generate and distribute OCSP responses in advance and thus do not have the ability to properly respond with a signed "successful" yet "unknown" response, will respond with an OCSPResponseStatus of "unauthorized". Also, in order to ensure the database of revocation Before you trust what the server is telling you (e.g. OCSP stapling), you want to trust that server in the first place, hence why OpenSSL might be verifying the server's cert first, making sure it's a valid and trusted certificate at all. Then, assuming the certificate looks valid, you would want to see if it's been revoked -- and that's when you'd handle/process the stapled OCSP response. OCSP stapling is designed to reduce the cost of an OCSP validation, both for the client and the OCSP responder, especially for large sites serving many simultaneous users. However, OCSP stapling supports only one OCSP response at a time, which is insufficient for certificate chains with intermediate CA certs.

Instead of a lengthy description, I just show the result: The output of man openssl-ocsp on an 80 char terminal, New vs. Old: New OPENSSL-OCSP(1) OpenSSL OPENSSL-OCSP(1) NAME openssl-ocsp - Online Certificate Status Protocol utility SYNOPSIS OCSP Client o

In openssl errors i found this define - x509_err_ocsp_verify_needed, but i don't understand how it uses. It seems that may be exists some kind of callback for my connecting to ocsp server function or something like that. Also i found it which i can use, as i understand, for my own validate function, but i want only ocsp check. OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. It is also a general-purpose cryptography library. For more information about the team and community around the project, or to start making your own contributions, start with the 7/02/2019 · You can restrict it to the 'ocsp' application. This configuration can be tested with OpenSSL. You'll need 2-3 certificates to do so. The root CA certificate; The signing certificate (may be the same as the root, or it may be an intermediate) The server certificate you want to check The following OpenSSL command can be used. This example assumes The OpenSSL ocsp tool can act as an OCSP responder, but it’s only intended for testing. Production ready OCSP responders exist, but those are beyond the scope of this guide. Create a server certificate to test. # cd /root/ca # openssl genrsa -out interm

A quick look at the OpenSSL OCSP man page shows the following:-nmin minutes, -ndays days. Number of minutes or days when fresh revocation information is available: used in the nextUpdate field. If neither option is present then the nextUpdate field is omi

Instead of a lengthy description, I just show the result: The output of man openssl-ocsp on an 80 char terminal, New vs. Old: New OPENSSL-OCSP(1) OpenSSL OPENSSL-OCSP(1) NAME openssl-ocsp - Online Certificate Status Protocol utility SYNOPSIS OCSP Client o I'm attempting to use Verisign's OCSP server to verify a certificate that it has issued, for example, amazon.com. I have the issuer certificate (which was rather hard to find). As well as the amazon 0 certificate. I'm using openSSL but I don't seem to be able to get the right OCSP responder certificate to verify the response. The entry point for the OpenSSL library is the openssl binary, usually /usr/bin/openssl on Linux. The general syntax for calling openssl is as follows: $ openssl command [ command_options ] [ command_arguments ] Alternatively, you can call openssl without arguments to enter the interactive mode prompt. 24/09/2019 · Once done, a request to the OCSP server can be sent by running the following command: openssl ocsp -no_nonce -issuer intermediate.crt -cert cert.crt -url [OCSP_URI] -VAfile intermediate.crt *where cert.crt is the end-entity certificate issued to your domain/subdomain and intermediate.crt is the first intermediate certificate mentioned above