The encryption key for Spring Webflow (cas.webflow.crypto.encryption.key) is not a JSON Web Key. It's a randomly-generated string of 16 octets, Base64-encoded. You can generate it with OpenSSL:
openssl rand -base64 16 > webflow-enc.txt Also, I believe you need a '-s' in front of the size argument for the other three: java -jar jwk-gen.jar -t oct *-s* 256 -o tgc-enc.jwks java -jar jwk-gen.jar -t oct *-s* 512 -o tgc-sig.jwks java -jar jwk-gen.jar -t oct *-s* 512 -o webflow-sig.jwks --Dave P.S. - I'm guessing on the '-s' issue; I used the web-based version of the key generator rather than the jar file. -- DAVID A. CURRY, CISSP *DIRECTOR OF INFORMATION SECURITY* INFORMATION TECHNOLOGY 71 FIFTH AVE., 9TH FL., NEW YORK, NY 10003 +1 212 229-5300 x4728 • david.cu...@newschool.edu [image: The New School] On Thu, Sep 13, 2018 at 4:01 PM Curtis Ruck <curtis.r...@gmail.com> wrote: > The problem is due to the chicken and egg issue. I need to prepopulate > the cas.properties, so the service can start up and work (without human > intervention). I'm trying my best to avoid having to start a service, > parse the logs, and modify config, then restart the service. The > documentation seems very light on these keys. > > On Thursday, September 13, 2018 at 10:03:02 AM UTC-4, William E. wrote: >> >> +1 >> >> I ended up grabbing values from the cas startup logs and setting in my >> cas.properties. Seems to work. >> >> >> On Wednesday, September 12, 2018 at 3:34:32 PM UTC-5, Curtis Ruck wrote: >>> >>> So i'm trying to automate the generation and persistence of the >>> cas.tgc.crypto and cas.webflow.crypto encryption and signing keys. >>> >>> I'm using the jwk-gen.jar, and when i store the key in cas.properties, >>> i end up with "Invalid AES key length: 43 bytes" when trying to access the >>> login page. >>> >>> >>> If I let CAS generate a key, its the same exact string length (43 >>> bytes). What is different between my key versus cas's generated keys? Then >>> i'm extracting the k value from the json, and inserting it into my >>> cas.properties. >>> >>> java -jar jwk-gen.jar -t oct 256 -o tgc-enc.jwks >>> java -jar jwk-gen.jar -t oct 512 -o tgc-sig.jwks >>> java -jar jwk-gen.jar -t oct 256 -o webflow-enc.jwks >>> java -jar jwk-gen.jar -t oct 512 -o webflow-sig.jwks >>> >> -- > - Website: https://apereo.github.io/cas > - Gitter Chatroom: https://gitter.im/apereo/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 cas-user+unsubscr...@apereo.org. > To view this discussion on the web visit > https://groups.google.com/a/apereo.org/d/msgid/cas-user/16619ee4-f77f-4436-9237-5a0e812bd17f%40apereo.org > <https://groups.google.com/a/apereo.org/d/msgid/cas-user/16619ee4-f77f-4436-9237-5a0e812bd17f%40apereo.org?utm_medium=email&utm_source=footer> > . > -- - Website: https://apereo.github.io/cas - Gitter Chatroom: https://gitter.im/apereo/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 cas-user+unsubscr...@apereo.org. To view this discussion on the web visit https://groups.google.com/a/apereo.org/d/msgid/cas-user/CA%2Bd9XAMb%3DeuC17W3_-4uhAUZeyj95p71jfbjHv%3DVCq_dHt_hVQ%40mail.gmail.com.