openssl command hangs
I had the same issue when using GitBash in Windows 7, After hours of search this solved my issue:
winpty openssl genrsa -out ../private.pem -aes256 4096Could give you some idea what is needed.
You need another argument, it expects to read a certificate from standard input. Probably you meant to add -new as a command line argument, or you need to pass an existing certificate on standard in.