OpenSSL Certificate creations

Create Self Signed Certificate

Here are the steps involved in creating self signed certificate

a) Create a key
b) Generate Certificate Sign request .csr
c) Sign your certificate (As it is self signed)


a) Create a key

Create a directory first (to avoid confusions)

#mkdir certificates
#cd certificates

Generate key file

#openssl genrsa 1024 > private.key


b) Generate Certificate Sign request .csr

#openssl req -new -key private.key > certrequest.csr

c) Sign your certificate (As it is self Signed)

#openssl x509 -in certrequest.csr -out selfsigned.crt -req -signkey private.key -days 365

Here the -days is the number of days denotes the validity of certificate

Once after this we can get the certificate as file "selfsigned.crt"