feat(platform)!: keyRequirements on identity key references (PV14) - #4918
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An identityPublicKey refersTo declaration may carry keyRequirements, what the referenced key must be beyond existing and not being disabled: a purpose (by its wire name, any but system) and a boundTo, the name of a document type of the declaring contract the key's contract bounds must name exactly. boundTo is validated at contract registration to name a document type the contract has (create_document_types_from_document_schemas generation 2), so the write-time check never needs a second contract fetch. Consensus checks the requirements against the key already fetched for the existence check and refuses the first unmet one, paid, with ReferencedIdentityKeyRequirementNotMetError (40136, StateError discriminant 144). A changed keyRequirements is an incompatible schema change on update. wasm-dpp2 mirrors the keyword and the code; Swift and Kotlin are not done. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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📝 WalkthroughWalkthroughThe change adds ChangesIdentity key reference requirements
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~45 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant ContractSchema
participant DocumentTypeFactory
participant DocumentTransition
participant IdentityKey
ContractSchema->>DocumentTypeFactory: parse keyRequirements
DocumentTypeFactory->>DocumentTypeFactory: validate boundTo and satisfiable purposes
DocumentTransition->>IdentityKey: fetch referenced key
IdentityKey-->>DocumentTransition: return key purpose and bounds
DocumentTransition->>DocumentTransition: accept or reject the reference
Suggested reviewers: Merge Risk: 🔵 Low · up to Direct deserialization can admit an invalid key requirement. The fix is small and should be applied before merge. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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…gorous-lovelace-4321ef # Conflicts: # packages/rs-dpp/src/data_contract/document_type/class_methods/try_from_schema/mod.rs # packages/rs-dpp/src/data_contract/document_type/mod.rs
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Two closures of different types cannot share one array; CI clippy refused the test. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
…on and decryption keys Drive registers an encryption or decryption key bound to a document type only when the type declares requiresIdentityEncryptionBoundedKey / requiresIdentityDecryptionBoundedKey, so the key-requirement tests could not add their keys. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
…required purpose Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
… fix-ups Registration (generation 2 of the document type builder, under full validation only) now also refuses a boundTo paired with a purpose that cannot carry a document type bound (transfer, voting, owner), or with an encryption or decryption purpose on a type that does not declare the matching requiresIdentity*BoundedKey keyword. The docs state that whole-contract and group bounds never meet boundTo, the JS spec pins keyRequirements and code 40136, wasm-dpp2 parses purpose names through Purpose::from_wire_name, the unrelated rewrites in the replace tests are reverted and the test helper imports move to the top. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
…gorous-lovelace-4321ef # Conflicts: # packages/rs-platform-version/src/version/v14.rs
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Inline comments:
In `@packages/wasm-dpp2/src/consensus_error.rs`:
- Line 80: Update the documentation for document_reference_error_code() to list
all recognized error codes: 40120–40125, 40131, 40135, and 40136. Leave the
getter’s implementation unchanged.
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book/src/data-model/contract-moderation.mdpackages/rs-dpp/schema/meta_schemas/document/v3/document-meta.jsonpackages/rs-dpp/src/data_contract/document_type/class_methods/create_document_types_from_document_schemas/mod.rspackages/rs-dpp/src/data_contract/document_type/class_methods/create_document_types_from_document_schemas/v2/mod.rspackages/rs-dpp/src/data_contract/document_type/class_methods/try_from_schema/mod.rspackages/rs-dpp/src/data_contract/document_type/methods/validate_update/common/mod.rspackages/rs-dpp/src/data_contract/document_type/mod.rspackages/rs-dpp/src/data_contract/document_type/property/mod.rspackages/rs-dpp/src/errors/consensus/codes.rspackages/rs-dpp/src/errors/consensus/state/document/mod.rspackages/rs-dpp/src/errors/consensus/state/document/referenced_identity_key_requirement_not_met_error.rspackages/rs-dpp/src/errors/consensus/state/state_error.rspackages/rs-dpp/src/identity/identity_public_key/purpose.rspackages/rs-dpp/src/validation/meta_validators/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/action_validation/document/document_reference_validation/v0/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/creation.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/replacement.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/data_contract_common/data_contract_reference_validation/v0/mod.rspackages/rs-drive-abci/tests/supporting_files/contract/reference-validation/reference-validation-contract-identity-key-requirements.jsonpackages/rs-platform-version/src/version/dpp_versions/dpp_contract_versions/v6.rspackages/rs-platform-version/src/version/v14.rspackages/wasm-dpp/src/errors/consensus/consensus_error.rspackages/wasm-dpp2/src/consensus_error.rspackages/wasm-dpp2/src/data_contract/document_type_reference.rspackages/wasm-dpp2/src/enums/keys/purpose.rspackages/wasm-dpp2/tests/unit/DocumentPropertyReference.spec.ts
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…recognizes Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
…gorous-lovelace-4321ef # Conflicts: # packages/rs-dpp/src/data_contract/document_type/class_methods/try_from_schema/mod.rs
…gorous-lovelace-4321ef # Conflicts: # packages/rs-dpp/src/data_contract/document_type/methods/validate_update/common/mod.rs # packages/rs-platform-version/src/version/v14.rs
…gorous-lovelace-4321ef # Conflicts: # packages/rs-dpp/src/data_contract/document_type/class_methods/try_from_schema/mod.rs # packages/rs-dpp/src/data_contract/document_type/mod.rs
boundTo follows the documentType keyword's new word-character pattern, since a document type name can no longer carry a hyphen; the two changelog items numbered 27 on the base become 27 and 28, and keyRequirements is 29.
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Inline comments:
In `@packages/rs-dpp/src/data_contract/document_type/property/mod.rs`:
- Around line 577-604: Update purpose_wire_name::deserialize to reject
Purpose::SYSTEM by filtering the result of Purpose::from_wire_name through
Purpose::full_range(). Preserve the existing unknown-purpose error for names
outside the allowed range.
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packages/rs-dpp/schema/meta_schemas/document/v3/document-meta.jsonpackages/rs-dpp/src/data_contract/document_type/class_methods/try_from_schema/mod.rspackages/rs-dpp/src/data_contract/document_type/methods/validate_update/common/mod.rspackages/rs-dpp/src/data_contract/document_type/mod.rspackages/rs-dpp/src/data_contract/document_type/property/mod.rspackages/rs-dpp/src/errors/consensus/codes.rspackages/rs-dpp/src/validation/meta_validators/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/mod.rspackages/rs-platform-version/src/version/v14.rspackages/wasm-dpp2/src/consensus_error.rs
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…e the schema parser Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
…cument type builder Generation 2 existed only to carry the keyRequirements.boundTo check. The check is inert for every protocol version before 14 (no parsed reference carries requirements there), so under the in-place rule for shipped generations it lives in generation 1 with an inertness comment, and CONTRACT_VERSIONS_V6 keeps generation 1. The tests move with it. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
keyRequirements (#4918) apply to the key id form: KeyIdWithReference carries a KeyIdReference (identity source plus requirements), the requirement check lives in the shared validate_referenced_identity_key_v0, the boundTo registration rule reads both forms, the meta-schema admits the keyword under either form and wasm-dpp2 reports it on both. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Issue being fixed or feature implemented
"refersTo": { "type": "identityPublicKey", "keyIdProperty": ... }makes consensus fetch the named identity's key and check that it exists and is not disabled. The moderation charters contract (#4898) needs more of the key it points at:joinRequest.recipientIdmust name a decryption key bound to thesubmittedCharterdocument type, so the sender can encrypt for the key the recipient dedicated to charters. This addskeyRequirements, an optional object of requirements the fetched key must also meet, in the shapecontractRequirementstook in #4909, #4913 and #4914.Part of the decentralized moderation teams work (#4865).
Example
A contract with a
joinRequesttype whoserecipientIdmust name a decryption key the recipient dedicated tosubmittedCharterdocuments of this same contract:{ "submittedCharter": { "type": "object", "requiresIdentityDecryptionBoundedKey": 2, "properties": { "title": { "type": "string", "maxLength": 64, "position": 0 } }, "additionalProperties": false }, "joinRequest": { "type": "object", "properties": { "recipientId": { "type": "array", "byteArray": true, "minItems": 32, "maxItems": 32, "contentMediaType": "application/x.dash.dpp.identifier", "refersTo": { "type": "identityPublicKey", "keyIdProperty": "recipientKeyId", "keyRequirements": { "purpose": "decryption", "boundTo": "submittedCharter" } }, "position": 0 }, "recipientKeyId": { "type": "integer", "minimum": 0, "position": 1 }, "message": { "type": "array", "byteArray": true, "maxItems": 4096, "position": 2 } }, "required": ["recipientId", "recipientKeyId", "message"], "additionalProperties": false } }The recipient identity
7z1…holds, among its keys, key 4:{ "id": 4, "purpose": 2, "securityLevel": 2, "type": 0, "contractBounds": { "$type": "documentType", "id": "<this contract id>", "documentTypeName": "submittedCharter" }, "data": "…" }A
joinRequestdocument referencing it:{ "$type": "joinRequest", "$ownerId": "3Fy…", "recipientId": "7z1…", "recipientKeyId": 4, "message": "<ciphertext>" }What consensus does with it, on create and on every replace that changes
recipientIdorrecipientKeyId:7z1…submittedCharter)ReferencedIdentityKeyRequirementNotMetError40136:purposerequiresdecryption, key hasencryptionjoinRequest)boundTorequiressubmittedCharter, key hascontract <id> document type joinRequestboundTorequiressubmittedCharter, key hasno contract boundsboundToThe key is fetched once for the existence check; the requirements are read off it.
What was done?
keyRequirementsonrefersTo, allowed only onidentityPublicKeyreferences (the existingidentityPublicKeyif/elsenow also forbids it elsewhere),minProperties: 1,additionalProperties: false. Keys:purpose, one ofauthentication,encryption,decryption,transfer,voting,owner(systemis refused);boundTo, a document type name of the declaring contract.packages/rs-dpp/src/data_contract/document_type/property/mod.rs):IdentityKeyReferenceRequirements { purpose: Option<Purpose>, bound_to: Option<String> }onDocumentPropertyReferenceTarget::IdentityPublicKey, serialized to nothing when empty.Purposegainswire_nameandfrom_wire_name(the variant names in lower case), and the requirements serialize the purpose by that name.boundTois met only byContractBounds::SingleContractDocumentTypenaming the declaring contract and exactly that type. A later requirement (a security level) is a new key of this object, never a new reference type.apply_property_reference0 admitskeyRequirementsonidentityPublicKeyreferences and refuses it on every other type, an empty object, an unknown key, an unknown purpose andsystem.create_document_types_from_document_schemasgeneration 1, under full validation only like the meta-schema, refuses a contract whoseboundTonames a document type the contract does not have, so the write-time check never needs a second contract fetch, and one whose pairing no key could ever meet:boundTowithtransfer,votingorowner(only authentication, encryption and decryption keys carry a document type bound), or withencryption/decryptionon a type that does not declare the matchingrequiresIdentityEncryptionBoundedKey/requiresIdentityDecryptionBoundedKey.ReferencedIdentityKeyRequirementNotMetError(40136,StateErrordiscriminant 144, appended) naming the document type, the property, the identity and key, the requirement and what the key has. A missing key is still 40123, a disabled one 40124, an unset key id property 40125. A replace that repoints the reference through either the identity id or the key id re-checks them, as before.keyRequirementsis an incompatible schema change, like the rest of arefersTo(test added; the diff rule already covered it).wasm-dpp2mirrorskeyRequirementson theidentityPublicKeymember ofDocumentPropertyReferenceTargetand addsReferencedIdentityKeyRequirementNotMet = 40136toDocumentReferenceErrorCode; the legacywasm-dppmaps the error. Swift and Kotlin are out of scope and not touched.packages/rs-platform-version/src/version/v14.rs, and a paragraph next to thecontractRequirementsone inbook/src/data-model/contract-moderation.md.The charters contract in #4898 is not edited;
recipientId's shape from that draft is what the tests use.Reviewer notes. A whole-contract bound or a contract group bound never meets
boundTo, even where the group holds the type, since the check reads nothing beyond the key; the docs and the error'sactualtext say so.submittedCharterin #4898 will needrequiresIdentityDecryptionBoundedKeyforrecipientId's requirement to register.StateErrordiscriminant 144 is also claimed by the open #4899; whichever merges second renumbers its frozen discriminant test.In-place changes to shipped generations
create_document_types_from_document_schemasgeneration 1 (packages/rs-dpp/src/data_contract/document_type/class_methods/create_document_types_from_document_schemas/v1/mod.rs), selected byCONTRACT_VERSIONS_V2throughV6, so protocol versions 2 through 14. The added post-pass readskey_requirementsoff parsedidentityPublicKeyreferences. Before protocol version 14 the tables carryapply_property_reference: None: every meta-schema of those versions refusesrefersToand their parser ignores it, so no parsed reference carries requirements there, the loop finds nothing to check, and the output is byte-for-byte what it was. The comment at the edited lines says the same.How Has This Been Tested?
rs-dpp (
cargo test -p dpp --all-features --lib -- document_type validate_update meta_validators state_error purpose, green):keyRequirementsrefused onidentityandcontractreferences, unknown purpose,system, upper-cased purpose, non-string values, emptyboundTo, unknown key, empty objectcreate_document_types_from_document_schemasv1 post-pass):boundTonaming another type or the declaring type accepted, a missing type refused under full validation and not re-checked without it,boundTowithtransfer/voting/ownerrefused, withencryption/decryptionon a type lacking the keyword refused, withauthenticationor without a purpose accepted on a type declaring nothing, refused at protocol version 13 and accepted atPlatformVersion::latest(), round trip throughserialize_to_bytes_with_platform_versionwith and without the keyword (bytes stable)DisplaypurposeandboundToare incompatibleStateErrordiscriminant pinned at 144,Purposewire names round tripdrive-abci, fixture
reference-validation-contract-identity-key-requirements.json(message.recipientIdrequires a decryption key bound toinbox), keys added to the test identity in state:inbox, the authentication key): refused namingpurposewith what the key hadmessage: refused namingboundToboundTowasm-dpp2 JS spec
DocumentPropertyReference.spec.ts:keyRequirementscarried when declared and absent otherwise, codes 40131, 40135 and 40136 pinned (16 passing afteryarn workspace @dashevo/wasm-dpp2 build).Also run locally:
cargo check -p dpp --all-features --all-targets,cargo fmt --all,cargo check -p wasm-dpp2 --target wasm32-unknown-unknown,cargo clippy -p dpp --all-features --all-targets -- -D warnings,cargo clippy -p drive-abci --all-features --all-targets -- -D warnings. The first CI run caught two test-only mistakes (a closure array and the fixture missing the bound-key keywords), fixed in follow-up commits.Breaking Changes
Consensus (protocol version 14, unreleased): a new
refersTokeyword, a new document type builder generation, a new state error code andStateErrorvariant. Contracts without the keyword serialize exactly as before.Checklist:
structure.rs, regeneratedgrovedb-structure.json, and checked the structure viewer link posted on this pull requestFor repository code-owners and collaborators only
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