openssl command hangs

The following request to openssl hangs

openssl req -key server.key -out server.csr 

Any idea 开发者_运维技巧what the problem could be?

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 4096

Could 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.

In a Linux system, probably you simply miss to add "-new" to tell OpenSSL to generate a new certificate request