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https://issues.apache.org/jira/browse/KNOX-2527?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on KNOX-2527 started by Sandor Molnar.
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> Support HMAC signature/verification in JWT tokens
> -------------------------------------------------
>
> Key: KNOX-2527
> URL: https://issues.apache.org/jira/browse/KNOX-2527
> Project: Apache Knox
> Issue Type: New Feature
> Components: KnoxSSO, Server
> Affects Versions: 1.5.0
> Reporter: Sandor Molnar
> Assignee: Sandor Molnar
> Priority: Major
> Fix For: 1.6.0
>
>
> As of now, in {{DefaultTokenAuthorityService}}, the generated JWT token is
> signed by RSA (PKI). It would be beneficial to add support for HMAC as well
> so that token signature/verification would not require a keystore being set
> but using a secret stored via Knox's alias service. The recommended alias
> name is {{gateway.signing.hmac.secret}}
> To support backward compatibility, the implementation should use HMAC
> signature/verification only if:
> - the HMAC secret is configured via the alias service for the gateway
> - there is no previously pre-configured {{gateway.signing.keystore.name}}
> which is a clear indication of end-user preference of using PKI signatures.
> The default HMAC algorithm would be {{HS256}} (HMAC using SHA-256 hash
> algorithm), but this might be overridden by the already existing request
> parameter called {{knoxsso.token.sigalg}}. Other valid values are:
> - {{HS384}}
> - {{HS512}}
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