transaction_intent_signer 1.0.0

Pure Dart utilities for transaction intent challenges, operation terms hashing, optional liveness-aware summaries, and audit-friendly signed assertions.

Changelog

All notable changes to this project will be documented in this file.

1.0.0

Added

• Stable public API review (doc/API.md)
• SemVer stability policy (doc/SEMVER.md)
• CI workflow (format, analyze, test, publish dry-run)
• Publishing / pub.dev readiness checklist (doc/PUBLISHING.md)
• Technical review notes (doc/TECHNICAL_REVIEW.md)
• CONTRIBUTING.md
• Cookbook example (example/cookbook.dart)
• Add-new-payee demo flow (example/flows/add_new_payee_flow.dart)
• platforms metadata for pub.dev

Changed

• Package version stabilized at 1.0.0
• Removed unused collection dependency

0.4.0

Added

• DemoConfirmationSession shared session model for Flutter/host demo apps
• AssertionShareHelper copy/share payloads (json, prettyJson, compact, summaryText)
• Enhanced prettyJson options (sortMapKeys, truncation, single-line) plus prettyCanonicalJson / encodeJson
• DemoDashboardSnapshot / DemoDashboardEntry schema (tis_demo_dashboard_v1)
• Docs: doc/MOBILE_REFERENCE.md, doc/DEMO_DASHBOARD_SCHEMA.md
• Example: example/mobile_reference_example.dart

0.3.0

Added

• LivenessSummaryMapper for flutter_liveness_actions-like derived signals
• Integration examples:
  • example/liveness_mapping_example.dart
  • example/backend_validator_example.dart
  • example/flows/remote_lending_flow.dart
  • example/flows/large_transfer_flow.dart
  • example/flows/security_settings_flow.dart
• doc/INTEGRATION_EXAMPLES.md
• Tests for mapper + lending / transfer / security-settings scenario flows

0.2.0

Added

• Stronger AuditAssertionVerificationResult with failureCode and checks
• VerificationFailureCode and VerificationCheck models
• Structured AssertionMetadata (producer, channel, correlationId, etc.)
• schemaVersion (tis_assertion_v1) on signed assertions
• TransactionIntentSignerInfo package/schema constants
• Experimental CompactAssertionEnvelope (JWS-style three-segment encoding)
• SignedAuditAssertion.fromUnsignedPayload helper
• Broader payload-drift tamper detection in the verifier
• Documentation: doc/AUDIT_TRAILS.md and updated assertion schema notes

Changed

• AuditAssertionBuilder embeds schemaVersion + assertionMetadata into the signed unsigned payload
• Legacy metadata map entries are merged into assertionMetadata.extra

0.1.0

Added

• TransactionIntent, TransactionIntentType, and IntentMetadata
• Deterministic CanonicalJsonEncoder (canonical_json_v1)
• OperationTermsHasher / OperationTermsHash (SHA-256 over canonical JSON)
• IntentChallenge and IntentChallengeBuilder with expiration checks
• AuthenticatorConfirmation and AuthenticatorType, including .simulated()
• Optional LivenessInteractionSummary with conservative privacy defaults
• SignedAuditAssertion, AuditAssertionBuilder, and AuditAssertionVerifier
• Demo-only DemoHmacSigner / DemoHmacVerifier
• Example loan-offer confirmation flow
• Documentation: architecture, assertion schema, threat model, integration guide, WebAuthn boundaries, security policy, and disclaimer