How To ...
How to create a keystore
How to create a private key in an existing keystore
Self-signed, DSA private key
Self-signed, RSA private key
Trusted CA, RSA private key
Step 1/3: create RSA private key
Step 2/3: export CSR file from private key's certificate
Step 3/3: import trusted CA certificate to private key
From private key located in other keystore
How to copy, delete, change alias or/and password, ...