openssl conversions

gistfile1.txt

# id_dsa is openssh private key
openssl dsa -in id_dsa -outform pem > id_dsa.pem
openssl dsa -in id_dsa -outform der > id_dsa.cer

openssl dsa -in id_dsa.pem -pubout > id_dsa.pub.pem
openssl dsa -in id_dsa -pubout -outform der > id_dsa.pub.cer

# DER file (.crt .cer .der) to PEM
openssl x509 -inform der -in certificate.cer -out certificate.pem

openssl dsa

# PEM file to DER
openssl dsa -outform der -in id_dsa.pub.pem -out id_dsa.pub.der

openssl req -new -x509 -key id_dsa.pem -out id_dsa_cert.pem

# PKCS#12 file (.pfx .p12) containing a private key and certificates to PEM
openssl pkcs12 -in keyStore.pfx -out keyStore.pem -nodes
# You can add -nocerts to only output the private key or add -nokeys to only output the certificates.

# PEM certificate file and a private key to PKCS#12 (.pfx .p12)
openssl pkcs12 -export -out id_dsa.pfx -inkey id_dsa.cer -in id_dsa.pub.cer -certfile CACert.crt

openssl pkcs12 -export -in pem-certificate-and-key-file -out pkcs-12-certificate-and-key-file 
openssl pkcs12 -export -in pem-certificate-file -inkey pem-key-file -out pkcs-12-certificate-and-key-file 
openssl pkcs12 -export -in pem-certificate-file -nokeys -nodes -out pkcs-12-certificate-file