[OpenID-Specs-eKYC-IDA] Issue #1293: [IDA] Digest Examples of External Attachments (openid/ekyc-ida)

[Takahiko Kawasaki]

New issue 1293: [IDA] Digest Examples of External Attachments
https://bitbucket.org/openid/ekyc-ida/issues/1293/ida-digest-examples-of-external

Takahiko Kawasaki:

The second and third example values of `"digest"`/`"value"` in the “[External Attachments](https://openid.net/specs/openid-connect-4-identity-assurance-1_0.html#name-external-attachments)” section are wrong. The length of both the values is 43. One `=` must be appended at the end of the values so that they can conform to Base64.

In addition, although the identifier for the SHA-256 algorithm mentioned in the `digest_algorithms_supported` server metadata \(in the “[OP Metadata](https://openid.net/specs/openid-connect-4-identity-assurance-1_0.html#name-op-metadata)” section\) and the identifier registered at the [Hash Algorithm Registry](https://www.iana.org/assignments/named-information/named-information.xhtml#hash-alg) are both `sha-256` \(all lowercase letters\), all the example values of `"digest"`/`"alg"` in the 3rd implementer’s draft of the OIDC4IDA specification are `SHA-256` \(all capital letters\).

The examples should be corrected.