[BOUNTY #803] Soroban escrow: identity module — address binding rules#852
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zhaog100 wants to merge 1 commit intoJagadeeshftw:masterfrom
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[BOUNTY #803] Soroban escrow: identity module — address binding rules#852zhaog100 wants to merge 1 commit intoJagadeeshftw:masterfrom
zhaog100 wants to merge 1 commit intoJagadeeshftw:masterfrom
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Implement address binding to prevent spoofed identities on claims: - Add IdentityBinding struct with bound_issuer, nonce, and active flag - Add bind_identity() — creates binding (admin-only, issuer must be authorized) - Add unbind_identity() — revokes binding, clears stored identity data - Add validate_binding() — checks active binding + issuer match before claim - Add get_binding() — query binding state for an address - Monotonic nonce prevents replay of stale binding payloads - submit_identity_claim now validates binding before accepting claims - Add DataKey::IdentityBinding(Address) to storage key enum Tests: 16 tests covering bind, unbind, rebind nonce increment, query, claim-without-binding rejection, unbind-nonexistent noop, and all original identity/limits tests. Security notes: - bind/unbind are admin-gated (require_auth on admin) - issuer must be in authorized set before binding is accepted - expired claims still fall back to Unverified tier - nonce prevents replay even if binding payload is intercepted Closes Jagadeeshftw#803
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Implement address binding rules to prevent spoofed identities on claims.
Changes:
Security: admin-gated bind/unbind, authorized issuer check, monotonic nonce anti-replay, expired claims fall back to Unverified.
Closes #803