hi specialist,by your suggestion,I have read help for many times and I noticed that I can use [./easyrsa build-ca nopass] to create a non-encrypt CA
# ./easyrsa build-ca nopass
Using SSL: openssl OpenSSL 1.1.0j 20 Nov 2018
path = C:/Program Files/OpenVPN/EasyRSA-3.0.7/pki/easy-rsa-884.a03632/tmp.XXXXXX
lpPathBuffer = C:\Users\ADMINI~1\AppData\Local\Temp\2\
szTempName = C:\Users\ADMINI~1\AppData\Local\Temp\2\tmpE331.tmp
path = C:\Users\ADMINI~1\AppData\Local\Temp\2\tmpE331.tmp
fd = 3
path = C:/Program Files/OpenVPN/EasyRSA-3.0.7/pki/easy-rsa-884.a03632/tmp.XXXXXX
lpPathBuffer = C:\Users\ADMINI~1\AppData\Local\Temp\2\
szTempName = C:\Users\ADMINI~1\AppData\Local\Temp\2\tmpE3BE.tmp
path = C:\Users\ADMINI~1\AppData\Local\Temp\2\tmpE3BE.tmp
fd = 3
Generating RSA private key, 2048 bit long modulus
...............................................................................................................
..................................+++++
...............................................................................................................
........................+++++
e is 65537 (0x010001)
path = C:/Program Files/OpenVPN/EasyRSA-3.0.7/pki/easy-rsa-884.a03632/tmp.XXXXXX
lpPathBuffer = C:\Users\ADMINI~1\AppData\Local\Temp\2\
szTempName = C:\Users\ADMINI~1\AppData\Local\Temp\2\tmpE739.tmp
path = C:\Users\ADMINI~1\AppData\Local\Temp\2\tmpE739.tmp
fd = 3
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Common Name (eg: your user, host, or server name) [Easy-RSA CA]:Gattaca
CA creation complete and you may now import and sign cert requests.
Your new CA certificate file for publishing is at:
C:/Program Files/OpenVPN/EasyRSA-3.0.7/pki/ca.crt
it seems working! But I'm still confused about encrypted CA,no matter what phrase I input,it always reports errors…What's wrong with it :?: