Difference between revisions of "OpenSSL"

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* Generate a [[random]] number: <code>[[openssl rand]] -base64 32</code><ref>https://www.howtogeek.com/howto/30184/10-ways-to-generate-a-random-password-from-the-command-line/</ref>
 
* Generate a [[random]] number: <code>[[openssl rand]] -base64 32</code><ref>https://www.howtogeek.com/howto/30184/10-ways-to-generate-a-random-password-from-the-command-line/</ref>
 
* Save remote [[SSL]] cert as a file:
 
* Save remote [[SSL]] cert as a file:
** <code>openssl s_client -showcerts -connect YOUR_DOMAIN.COM:443</code><ref>https://superuser.com/questions/97201/how-to-save-a-remote-server-ssl-certificate-locally-as-a-file</ref>
+
** <code>[[openssl s_client]] -showcerts -connect YOUR_DOMAIN.COM:443</code><ref>https://superuser.com/questions/97201/how-to-save-a-remote-server-ssl-certificate-locally-as-a-file</ref>
 
** <code>openssl s_client -showcerts -connect YOUR_DOMAIN.COM<:443 </dev/null 2>/dev/null | [[openssl x509]] -outform PEM > mycertfile.pem </code>
 
** <code>openssl s_client -showcerts -connect YOUR_DOMAIN.COM<:443 </dev/null 2>/dev/null | [[openssl x509]] -outform PEM > mycertfile.pem </code>
  

Revision as of 06:56, 6 October 2020

OpenSSL (1988) is an open source implementation of the TSL cryptographic protocol, and its now-deprecated predecessor, Secure Sockets Layer (SSL) protocol.

CSR Examples

openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout private.key -out public.pem
Output a self-signed certificate instead of a certificate request
-nodes (short for no DES) do not encrypt private key
-x509 Output a self-signed certificate instead of a certificate request


  • Read certificate (CRT)
openssl x509 -text -noout -in root.crt
openssl req -text -noout -in root.csr


Public keys

openssl rsa -in mykey.pem -pubout > mykey.pub

Activities

Related terms

Vulnerabilities

See also

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Source: https://en.wikiversity.org/wiki/OpenSSL

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