Thank you so much for answering my question.

Finally, I can solve my question.

Thank you again.

Best regards,
Jin.

2018-02-23 15:02 GMT+09:00 n-sakimura <n-sakim...@nri.co.jp>:

> Hi
>
>
>
> JWS Signature is the signature only. It does not repeat the payload.
>
>
>
> Best,
>
>
>
> Nat Sakimura
>
>
>
> *From:* jose [mailto:jose-boun...@ietf.org] *On Behalf Of *Beth Lee
> *Sent:* Thursday, February 22, 2018 11:36 AM
> *To:* jose@ietf.org
> *Subject:* [jose] Does JWS signature relate with JWS payload?
>
>
>
> Hi. I'm Jin.
>
>
>
> I have curious about JWS signatrue in JWT.
>
>
>
> I already read the JWT spec inforation from https://www.rfc-editor.org/
> rfc/rfc7515.txt
>
> But I'm still confusted about JWS signatrue contains or relate with JWS
> Payload value or not.
>
>
>
> I knew that JWT contained with 3 part. (JOSE Header, JWS Payload, JWS
> Signatrue)
>
>
>
> When I read the spec information.
>
> I understood that JWS signature value doesn't contain the JWS payload
> value.
>
>
>
> Am I right? Then how can I check data integrity based on JSW signature ?
>
> (I guess I'm not right.)
>
>
>
> I really want to solve my question but I can't reache the answers.
>
>
>
> So please give me some advice.
>
>
>
> Best regards,
>
> Jin
>
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