You have some old config. The newer version of cas is using longer keys. Generate new keys with the expected bit length. You could try setting the key length, but it has not worked for me.
Ray ________________________________ From: 'rotts' via CAS Community <[email protected]> Sent: November 5, 2025 11:37 To: CAS Community <[email protected]> Subject: [cas-user] cas 7.3.0 - encryption warning I am seeing this in my cas.log. Not sure what setting in cas.yml I would change for this. 2025-11-05 13:26:46,958 WARN [org.apereo.cas.util.function.FunctionUtils] - <Invalid key for dir with A256CBC-HS512, expected a 512 bit key but a 256 bit key was provided. JsonWebTokenEncryptor.java:encrypt:83 BaseStringCipherExecutor.java:encryptValueAsJwt:186 BaseStringCipherExecutor.java:lambda$encryptAndSign$8:302 FunctionUtils.java:lambda$doIf$3:110 > -- - Website: https://apereo.github.io/cas - List Guidelines: https://goo.gl/1VRrw7 - Contributions: https://goo.gl/mh7qDG --- You received this message because you are subscribed to the Google Groups "CAS Community" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To view this discussion visit https://groups.google.com/a/apereo.org/d/msgid/cas-user/e73c1cca-425f-4917-9920-4f348ee0cefdn%40apereo.org<https://groups.google.com/a/apereo.org/d/msgid/cas-user/e73c1cca-425f-4917-9920-4f348ee0cefdn%40apereo.org?utm_medium=email&utm_source=footer>. -- - Website: https://apereo.github.io/cas - List Guidelines: https://goo.gl/1VRrw7 - Contributions: https://goo.gl/mh7qDG --- You received this message because you are subscribed to the Google Groups "CAS Community" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/apereo.org/d/msgid/cas-user/YQBP288MB00815137CC084636E48BA8CACEC2A%40YQBP288MB0081.CANP288.PROD.OUTLOOK.COM.
