Assuming the same software displayed both renderings, like OpenSSL, the difference in whether or not it displays in both decimal and hex likely has to do with the length of the serial number. For OpenSSL the cutoff is 8 content (non-0x00) bytes: https:
On 08/21/2017 09:20 AM, Salz, Rich via openssl-users wrote: > But in doing this, I can't figure out if there is a risk on serial > number size for a root CA cert as there is for any other cert. > > I don’t understand what attack you are concerned about, but the size of the serial number should not matter for *any* certificate. > This whole subject is tied into the substitution attack found A 6 Part Introductory OpenSSL Tutorial - KeyCDN Apr 03, 2019 6.3.7 Creating SSL Certificates and Keys Using openssl This section describes how to use the openssl command to set up SSL certificate and key files for use by MySQL servers and clients. The first example shows a simplified procedure such as you might use from the command line. -key.pem -out server-key.pem shell> openssl x509 -req -in server-req.pem -days 3600 \-CA ca.pem -CAkey ca-key.pem -set Download - OPNsense® is a true open source firewall and more serial: USB installer image with live system capabilities running in serial console (115200) mode as MBR boot. nano: a preinstalled serial image for USB sticks, SD or CF cards as MBR boot. These images are 3G in size and automatically adapt to the installed media size after first boot.
OpenSSL & SSLyze; testssl.sh; SSL Labs. The SSL Labs powered by Qualys, with the tool you can check your website for certificate and configuration and your browser for SSL installation. You can start the analysis by just entering the domain name or the Ip address of the target server, it runs an in-depth scan and provides you a detailed
OpenSSL - User - Using set_serial to control serial number On 08/21/2017 09:20 AM, Salz, Rich via openssl-users wrote: > But in doing this, I can't figure out if there is a risk on serial > number size for a root CA cert as there is for any other cert. > > I don’t understand what attack you are concerned about, but the size of the serial number should not matter for *any* certificate. > This whole subject is tied into the substitution attack found A 6 Part Introductory OpenSSL Tutorial - KeyCDN
openssl x509 -noout -text -in certname on different certs, on some I get a serial number which looks like this. Serial Number: 256 (0x100) On others, I get one which looks like this. Serial Number: 41:d7:4b:97:ae:4f:3e:d2:5b:85:06:99:51:a7:b0:62 The certificates I create using openssl command line always look like the first one.
OpenSSL "ca" - Sign CSR with CA Certificate How to sign a CSR with my CA certificate and private key using OpenSSL "ca" command? I think my configuration file has all the settings for the "ca" command. If you have you configuration file ready and all the required directories and files created, you can sign a CSR with your CA certificate and p The Prediction of Serial Number in OpenSSL’s X.509 Certificate Since the time is the seed of generating serial number in OpenSSL, we can limit the seed in a narrow range and get a series of candidate serial numbers and use these candidate serial numbers to construct faked X.509 certificates through Stevens’s method. Although MD5 algorithm has been replaced by CAs, the kind of attack will be feasible if /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 How to setup your own CA with OpenSSL · GitHub