Added 3 new password hashing schemes

Support for bcrypt, sha256, pbkdf2 and plain text ofc.
This makes password-based auth actually secure.

src/main/resources/config.yml

@@ -17,16 +17,22 @@ EnableSFTP: true
 # before it terminates the connection.
 LoginRetries: 3
 
+########################################################################################
 # By default, only public key authentication is enabled. This is the most secure mode.
 # To authorize a user to login with their public key, install their key using the
 # OpenSSH authorized_keys file format in the authorized_users directory. Name the key
 # file with the user's username and no extension. Note: If you want to let a user have
 # many keys, you can append the keys to their file in authorized_users.
+########################################################################################
 
 # For less secure username and password based authentication, complete the sections below.
 
 # Type of hashing to use for the passwords below.
-# Options are: PLAIN (insecure), bcrypt, pbkdf, sha256
+# Options are: PLAIN (insecure), bcrypt, pbkdf2, sha256
+#
+# You can use the console/in-game command `/mkpasswd [hash] PASSWORD` to
+# generate a password hash string then copy it for your passwords below.
+# You can also use `/mkpasswd help` to see what algorithms are supported.
 PasswordType: bcrypt
 
 # Associate each username with a password hash (or the password if the PasswordType is set to PLAIN)

src/main/resources/plugin.yml

@@ -1,4 +1,8 @@
 name: SSHD
 version: ${project.version}
 author: Ryan Michela, Haarolean, toxuin, Justin Crawford
-main: com.ryanmichela.sshd.SshdPlugin
+main: com.ryanmichela.sshd.SshdPlugin
+commands:
+  mkpasswd:
+    description: Make a SSHD password hash
+    usage: /mkpasswd <hash|help> <password>