the repository which powers this website
auth-filters: do not use HMAC-SHA1
Though SHA1 is broken, HMAC-SHA1 is still fine. But let's not push our
luck; SHA256 is more sensible anyway.
Signed-off-by: Jason A. Donenfeld <[email protected]>
| -rw-r--r-- | filters/gentoo-ldap-authentication.lua | 4 | ||||
| -rw-r--r-- | filters/simple-authentication.lua | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/filters/gentoo-ldap-authentication.lua b/filters/gentoo-ldap-authentication.lua index 6d8eb3e2..c1e382fe 100644 --- a/filters/gentoo-ldap-authentication.lua +++ b/filters/gentoo-ldap-authentication.lua @@ -271,7 +271,7 @@ function validate_value(expected_field, cookie) end -- Lua hashes strings, so these comparisons are time invariant. - if hmac ~= crypto.hmac.digest("sha1", field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt, secret) then + if hmac ~= crypto.hmac.digest("sha256", field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt, secret) then return nil end @@ -296,7 +296,7 @@ function secure_value(field, value, expiration) value = url_encode(value) field = url_encode(field) authstr = field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt - authstr = authstr .. "|" .. crypto.hmac.digest("sha1", authstr, secret) + authstr = authstr .. "|" .. crypto.hmac.digest("sha256", authstr, secret) return authstr end diff --git a/filters/simple-authentication.lua b/filters/simple-authentication.lua index de34d092..596c0418 100644 --- a/filters/simple-authentication.lua +++ b/filters/simple-authentication.lua @@ -231,7 +231,7 @@ function validate_value(expected_field, cookie) end -- Lua hashes strings, so these comparisons are time invariant. - if hmac ~= crypto.hmac.digest("sha1", field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt, secret) then + if hmac ~= crypto.hmac.digest("sha256", field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt, secret) then return nil end @@ -256,7 +256,7 @@ function secure_value(field, value, expiration) value = url_encode(value) field = url_encode(field) authstr = field .. "|" .. value .. "|" .. tostring(expiration) .. "|" .. salt - authstr = authstr .. "|" .. crypto.hmac.digest("sha1", authstr, secret) + authstr = authstr .. "|" .. crypto.hmac.digest("sha256", authstr, secret) return authstr end |