bcrypt>=3.1.3 cryptography>=2.5 pynacl>=1.0.1 six [all] pyasn1>=0.1.7 pynacl>=1.0.1 bcrypt>=3.1.3 invoke>=1.3 [all:platform_system != "Windows"] gssapi>=1.4.1 [all:platform_system == "Windows"] pywin32>=2.1.8 [ed25519] pynacl>=1.0.1 bcrypt>=3.1.3 [gssapi] pyasn1>=0.1.7 [gssapi:platform_system != "Windows"] gssapi>=1.4.1 [gssapi:platform_system == "Windows"] pywin32>=2.1.8 [invoke] invoke>=1.3