[JIRA] (JCOMOIDC-61) A128CBC-HS256 Potentially returning the wrong keysize

[Philip Smart (Jira)]

Philip Smart ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=5afecdc1eb3ffa0c596652c4 ) *created* an issue

Java Common OIDC Library ( https://shibboleth.atlassian.net/browse/JCOMOIDC?atlOrigin=eyJpIjoiOTUwOTM5NDhhOGU5NGRkNTk4NmNjZTE1MmFhYjFhYjYiLCJwIjoiaiJ9 ) / Bug ( https://shibboleth.atlassian.net/browse/JCOMOIDC-61?atlOrigin=eyJpIjoiOTUwOTM5NDhhOGU5NGRkNTk4NmNjZTE1MmFhYjFhYjYiLCJwIjoiaiJ9 ) JCOMOIDC-61 ( https://shibboleth.atlassian.net/browse/JCOMOIDC-61?atlOrigin=eyJpIjoiOTUwOTM5NDhhOGU5NGRkNTk4NmNjZTE1MmFhYjFhYjYiLCJwIjoiaiJ9 ) A128CBC-HS256 Potentially returning the wrong keysize ( https://shibboleth.atlassian.net/browse/JCOMOIDC-61?atlOrigin=eyJpIjoiOTUwOTM5NDhhOGU5NGRkNTk4NmNjZTE1MmFhYjFhYjYiLCJwIjoiaiJ9 )

Issue Type: Bug Affects Versions: 1.0.0, 1.1.0, 2.0.0, 2.1.0 Assignee: Henri Mikkonen ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A1614c4a5-c89e-4edc-9421-990bd6ea85fd ) Components: Security Created: 18/Jan/23 12:58 PM Fix Versions: 2.2.0 Priority: Trivial Reporter: Philip Smart ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=5afecdc1eb3ffa0c596652c4 )

From what I can see, A128CBC-HS256 requires a key length of 256 bits —perhaps slightly unintuitive given that AES128 uses 128-bit keys.

Before I update this, I am not sure if, a) I am correct and, b) there is no impact on the OP Henri Mikkonen ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A1614c4a5-c89e-4edc-9421-990bd6ea85fd ) ?

( https://shibboleth.atlassian.net/browse/JCOMOIDC-61#add-comment?atlOrigin=eyJpIjoiOTUwOTM5NDhhOGU5NGRkNTk4NmNjZTE1MmFhYjFhYjYiLCJwIjoiaiJ9 ) Add Comment ( https://shibboleth.atlassian.net/browse/JCOMOIDC-61#add-comment?atlOrigin=eyJpIjoiOTUwOTM5NDhhOGU5NGRkNTk4NmNjZTE1MmFhYjFhYjYiLCJwIjoiaiJ9 )

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