OpenSSL

Manipulation

# generate a new private key and certificate signing request
openssl req -out chorke.csr -new -newkey rsa:2048 -nodes \
-keyout chorke.key

#generate a self-signed certificate 
openssl req -x509 -sha256 -nodes -days 365 -newkey rsa:2048 \
-keyout privateKey.key -out certificate.crt

# check a certificate signing request(csr)
openssl req -text -noout -verify -in chorke.csr

# check a private key
openssl rsa -check -in chorke.key

# check a certificate
openssl x509 -text -noout -in chorke.crt

# check a pkcs#12 file (.pfx or .p12)
openssl pkcs12 -info -in chorke.p12

References

• Common Most OpenSSL Commands
• import a public SSL certificate into a JVM
• Create and Install an Apache Self Signed Certificate