[JIRA] (JCOMOIDC-67) Improve support for RSA* and ECDH-ES* JWE algorithms

[Henri Mikkonen (Jira)]

Henri Mikkonen ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A1614c4a5-c89e-4edc-9421-990bd6ea85fd ) *created* an issue

Java Common OIDC Library ( https://shibboleth.atlassian.net/browse/JCOMOIDC?atlOrigin=eyJpIjoiMjM4NTllMWM3MjcyNDVlMjgxNGIwYjUzMmM1Yjc1ZDkiLCJwIjoiaiJ9 ) / Improvement ( https://shibboleth.atlassian.net/browse/JCOMOIDC-67?atlOrigin=eyJpIjoiMjM4NTllMWM3MjcyNDVlMjgxNGIwYjUzMmM1Yjc1ZDkiLCJwIjoiaiJ9 ) JCOMOIDC-67 ( https://shibboleth.atlassian.net/browse/JCOMOIDC-67?atlOrigin=eyJpIjoiMjM4NTllMWM3MjcyNDVlMjgxNGIwYjUzMmM1Yjc1ZDkiLCJwIjoiaiJ9 ) Improve support for RSA* and ECDH-ES* JWE algorithms ( https://shibboleth.atlassian.net/browse/JCOMOIDC-67?atlOrigin=eyJpIjoiMjM4NTllMWM3MjcyNDVlMjgxNGIwYjUzMmM1Yjc1ZDkiLCJwIjoiaiJ9 )

Issue Type: Improvement Assignee: Henri Mikkonen ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A1614c4a5-c89e-4edc-9421-990bd6ea85fd ) Components: Security Created: 13/Mar/23 8:11 AM Fix Versions: 2.2.0 Priority: Trivial Reporter: Henri Mikkonen ( https://shibboleth.atlassian.net/secure/ViewProfile.jspa?accountId=557058%3A1614c4a5-c89e-4edc-9421-990bd6ea85fd )

The JWA spec [1] lists the following implementation requirements for RSA* and ECDH-ES* algorithms:

* RSA1_5 (Recommended-)
* RSA-OAEP (Recommended+)
* RSA-OAEP-256 (Optional)
* ECDH-ES (Recommended+)
* ECDH-ES+A128KW (Recommended)
* ECDH-ES+A192KW (Optional)
* ECDH-ES+A256KW (Recommended)

Regarding the RSA* algorithms, Nimbus has deprecated the first two to SHA-1 based hashing, and recommends using RSA-OAEP-256 instead [2]. Their current code also supports RSA-OAEP-384 and RSA-OAEP-512, even though those don’t seem to be included in any specs. It feels sensible to add support for those in our code too.

Regarding the ECDH-ES-* algorithms, we’ve previously only supported the ECDH-ES one. Nimbus supports the other three too, so it’s straightforward to add support in our code too. This has also already been requested by some deployers.

[1] https://www.rfc-editor.org/rfc/rfc7518.html#section-4.1 ( https://www.rfc-editor.org/rfc/rfc7518.html#section-4.1 )

[2] https://connect2id.com/blog/nimbus-jose-jwt-deprecates-use-of-sha-1 ( https://connect2id.com/blog/nimbus-jose-jwt-deprecates-use-of-sha-1 )

( https://shibboleth.atlassian.net/browse/JCOMOIDC-67#add-comment?atlOrigin=eyJpIjoiMjM4NTllMWM3MjcyNDVlMjgxNGIwYjUzMmM1Yjc1ZDkiLCJwIjoiaiJ9 ) Add Comment ( https://shibboleth.atlassian.net/browse/JCOMOIDC-67#add-comment?atlOrigin=eyJpIjoiMjM4NTllMWM3MjcyNDVlMjgxNGIwYjUzMmM1Yjc1ZDkiLCJwIjoiaiJ9 )

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