SSL

Checking Certificate Chain with OpenSSL

Checking A Remote Certificate Chain With OpenSSL

Change .p12 / .pfx password

Say you have a private key / certificate file mycert.pfx, and you want to change its password:

# Strangely we cannot pipe output of 1st command into 2nd (error 'No certificate matches private key')
openssl pkcs12 -in mycert.pfx out mycert.pem -nodes         # Don't encrypt private key at all
openssl pkcs12 -export -in mycert.pem -out mycert-new.pfx
rm mycert.pem                                               # DON'T FORGET THIS!