security and scalability considerations of DID methods

[bluesteens]

Steering: Proposal Summary

Expansion of existing section on securing did:web and addition of did:ethr considerations

1. This removes plagiarism in the did:web section and
2. introduces equal treatment of both DID methods by adding did:ethr security considerations

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Steering: Publication Summary

Used to present completed work to Steering for approval to publish. Discuss the work that was completed in reference to the above proposal. Include any differences from the proposal and why. use [GitHub Preview](https://htmlpreview.github.io/) to show final state of documents along with pull requests (if needed). #

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Detailed Description:

• PR expands on existing section on securing did:web and removes plagiarizing elements
• and adds did:ethr considerations

Note: this PR builds on prior edits in https://github.com/Open-Credentialing-Initiative/Digital-Wallet-Conformance-Criteria/pull/53

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Triage:

• [x] Is Issue appropriate for OCI Architecture
• [x] Assign Size
• [x] Assign Priority
• [x] Assign Label (if needed)
• [x] OCI affected Artifacts Identified
• [ ] Assign Triage - Artifact Version Target (v x.x.x Milestone)
• [ ] Assign Triage - Interop Profile Version Target (v x.x.x Milestone)
• [ ] Create sub-project (if needed)

Affected Parties (help determine Sunrise/Sunset):

• [ ] Trading Partners
• [ ] Issuers
• [x] Wallet Solutions
• [ ] PI Verification Solutions

Affected OCI Artifact

• [ ] Schema Document
• [ ] Identity Schema
• [ ] ATP Schema
• [ ] Issuer Conformance Criteria
• [x] Wallet Conformance Criteria
• [ ] VRS Solution Conformance Criteria
• [ ] Wallet API Specification
• [ ] Governance Document
• [ ] Conformance Program
• [ ] OCI Website
• [ ] Internal Process

Change Category (Guides Steering Review)

- Steering/Industry Review

• [ ] Business-Level (May affect business operations)
• [ ] OCI Governance, Policy or website feature

- Steering/Industry Notification

• [x] Technical-Level (Does not affect business operations)
• [ ] OCI Internal Process or Infrastructure

Communication

• [ ] Website
• [ ] Newsletter
• [ ] email:
• [ ] Other:

[rceleste125]

P&A team reviewed and accepted changes on 2023-09-21 call.