freenode configuration sasl authentication in weechat

Posted 2020-10-01 Chen Jian

转自:https://www.weechat.org/files/doc/stable/weechat_user.en.html#irc_sasl_authentication

 SASL authentication

WeeChat supports SASL authentication, using different mechanisms:

• plain: plain text password (default)

• ecdsa-nist256p-challenge: challenge with public/private key

• external: client side SSL cert

• dh-blowfish: blowfish encrypted password (insecure, not recommended)

• dh-aes: AES encrypted password (insecure, not recommended)

The "gcrypt" library is required when compiling WeeChat in order to use "dh-blowfish" and "dh-aes" mechanisms (see dependencies).

Options in servers are:

• sasl_mechanism: mechanism to use (see above)

• sasl_timeout: timeout (in seconds) for authentication

• sasl_fail: action to perform if authentication fails

• sasl_username: username (nick)

• sasl_password: password

• sasl_key: file with ECC private key (for mechanism ecdsa-nist256p-challenge)

SASL ECDSA-NIST256P-CHALLENGE

You must generate a private key in order to authentify with the ECDSA-NIST256P-CHALLENGE mechanism (no password is required on connection).

You can generate the key with this command:

$ openssl ecparam -genkey -name prime256v1 >~/.weechat/ecdsa.pem

Get the public key (encoded as base64) with this command:

$ openssl ec -noout -text -conv_form compressed -in ~/.weechat/ecdsa.pem | grep ‘^pub:‘ -A 3 | tail -n 3 | tr -d ‘ \n:‘ | xxd -r -p | base64

Connect to the server, identify (for example with "nickserv identify") and set your public key in your account, using nickserv (replace the base64 value with your public key):

/connect freenode
/msg nickserv identify your_password
/msg nickserv set pubkey Av8k1FOGetUDq7sPMBfufSIZ5c2I/QYWgiwHtNXkVe/q

Configure the SASL options in the server:

/set irc.server.freenode.sasl_mechanism ecdsa-nist256p-challenge
/set irc.server.freenode.sasl_username "your_nickname"
/set irc.server.freenode.sasl_key "%h/ecdsa.pem"

Reconnect to the server:

/reconnect freenode