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Add API Token Cache (#16547)

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One of the issues holding back performance of the API is the problem of hashing.
Whilst banning BASIC authentication with passwords will help, the API Token scheme
still requires a PBKDF2 hash - which means that heavy API use (using Tokens) can
still cause enormous numbers of hash computations.

A slight solution to this whilst we consider moving to using JWT based tokens and/or
a session orientated solution is to simply cache the successful tokens. This has some
security issues but this should be balanced by the security issues of load from
hashing.

Related #14668

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
This commit is contained in:
zeripath
2021-08-17 19:30:42 +01:00
committed by GitHub
parent 274aeb3a9e
commit e0853d4a21
5 changed files with 57 additions and 1 deletions
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4
custom/conf/app.example.ini
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@@ -378,6 +378,10 @@ INTERNAL_TOKEN=
;;
;; Validate against https://haveibeenpwned.com/Passwords to see if a password has been exposed
;PASSWORD_CHECK_PWN = false
;;
;; Cache successful token hashes. API tokens are stored in the DB as pbkdf2 hashes however, this means that there is a potentially significant hashing load when there are multiple API operations.
;; This cache will store the successfully hashed tokens in a LRU cache as a balance between performance and security.
;SUCCESSFUL_TOKENS_CACHE_SIZE = 20
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;