1 file changed, 14 insertions, 2 deletions
diff --git a/custom/extensions/auth-file.lua b/custom/extensions/auth-file.lua
index 59e05cc..18a80fd 100644
--- a/custom/extensions/auth-file.lua
+++ b/custom/extensions/auth-file.lua
@@ -52,8 +52,20 @@ local hmac = require("openssl.hmac")
 
 -- The values that follow are the configuration and are meant to be edited.
 
--- Accounts live one per line as username:hash. Generate a hash with
---     mkpasswd -m sha-512 -R 300000
+-- Accounts live one per line as username:hash, where the hash is any kind this
+-- system's crypt(3) checks. yescrypt ($y$) is what libxcrypt recommends, as on
+-- Debian, Ubuntu and Fedora, though musl, as on Alpine, does not check it.
+-- SHA-512 ($6$) works on Linux and FreeBSD given enough rounds, bcrypt ($2b$)
+-- is the only kind OpenBSD checks, and macOS checks none of them. Make one
+-- with whichever of these the system has.
+--
+--     # Debian and Ubuntu, from the whois package
+--     mkpasswd -m yescrypt
+--     # anywhere with OpenSSL, as SHA-512
+--     openssl passwd -6 -salt "rounds=300000\$$(openssl rand -hex 8)"
+--     # OpenBSD, as bcrypt
+--     encrypt -b a -p
+--
 -- This file should not be world-readable.
 local users_filename = "/etc/cgit-auth/users"