How to find the thumbprint/serial number of a certificate

The Most Common OpenSSL Commands - SSL Shopper Jan 13, 2008 openssl_csr – Generate OpenSSL Certificate Signing Request Jun 22, 2020 Appendix B: CA Database — OpenSSL PKI Tutorial

OpenSSL Helper Tools. You can use one of the numerous scripts and tools for easier key and certificate management (e.g., easy-rsa which is shipped with OpenVPN). To make your decision even a bit harder, I also wrote such a tool ( details are given by the tools.

/docs/man1.1.0/man3/X509_get_serialNumber.html - OpenSSL X509_set_serialNumber() sets the serial number of certificate x to serial. A copy of the serial number is used internally so serial should be freed up after use. RETURN VALUES. X509_get_serialNumber() and X509_get0_serialNumber() return an ASN1_INTEGER structure. X509_set_serialNumber() returns 1 for success and 0 for failure. SEE ALSO

Generate OpenSSL RSA Key Pair from the Command Line

Unable to decode negative serial number · Issue #4320 The cause isn't just that the serial number is negative: OpenSSL will tolerate that as required by RFC5280 et al. The problem is that the ASN.1 Integer has an invalid encoding: there is illegal extra padding. OpenSSL - User - Extract of Public key and Serial number On Mon, Feb 20, 2012, Dave Thompson wrote: > > From: On Behalf Of praveenpvs > > Sent: Sunday, 19 February, 2012 23:15 > > > I am new to OPENSSL. I have a certificate, i need to extract > > public key and > > serial number from it. I know the command to do that, but i > > wanted to use > > api in my application.