Add Ancora native contract for off-chain data anchoring
Implement ADR-004 Phase 1 - the Ancora (Latin for "anchor") contract provides Merkle root anchoring for off-chain data with proof verification: Core Features: - Data root management: Track Merkle roots per VitaID and DataType (Medical, Education, Investment, Documents, Custom) - Provider registry: Committee-managed authorization for data providers with rate limiting and cooldown periods - Proof verification: Verify Merkle proofs against anchored roots supporting SHA256, Keccak256, and Poseidon algorithms - GDPR erasure: Right-to-be-forgotten workflow with pending/confirmed/denied status and configurable grace periods - Data portability: Generate attestations for cross-system data transfer Contract Methods: - registerProvider/revokeProvider: Committee authorization for providers - updateDataRoot: Anchor new Merkle root with version tracking - verifyProof: Validate leaf inclusion against anchored root - requestErasure/confirmErasure/denyErasure: GDPR erasure workflow - generatePortabilityAttestation: Data portability support Cross-Contract Integration: - Vita: Identity verification via ExistsInternal/OwnerOfInternal - Tutus: Committee authority for provider management State Types (pkg/core/state/state_anchors.go): - RootInfo: Merkle root metadata with version and algorithm - ErasureInfo: GDPR erasure request tracking - ProviderConfig: Authorized provider configuration - StateAnchorsConfig: Global contract settings - Enums: DataType, TreeAlgorithm, ErasureStatus Contract ID: -27 Tests (15 test cases): - Configuration and query tests - Provider registration/revocation tests - Authorization and error handling tests - Data type and algorithm validation tests 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Tutus Development
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@ -124,6 +124,10 @@ type (
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IsAdultVerified(d *dao.Simple, owner util.Uint160) bool
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// GetTotalTokenCount returns total number of Vita tokens (for quorum calculation).
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GetTotalTokenCount(d *dao.Simple) uint64
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// ExistsInternal checks if a Vita token with the given ID exists.
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ExistsInternal(d *dao.Simple, vitaID uint64) bool
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// OwnerOfInternal returns the owner of a Vita token by ID.
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OwnerOfInternal(d *dao.Simple, vitaID uint64) util.Uint160
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}
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// IRoleRegistry is an interface required from native RoleRegistry contract
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@ -331,6 +335,19 @@ type (
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// Address returns the contract's script hash.
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Address() util.Uint160
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}
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// IAncora is an interface required from native Ancora contract for
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// interaction with Blockchain and other native contracts.
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// Ancora anchors Merkle roots of off-chain data for privacy-preserving verification.
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IAncora interface {
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interop.Contract
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// VerifyProofInternal verifies a Merkle proof against the stored root.
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VerifyProofInternal(d *dao.Simple, vitaID uint64, dataType state.DataType, leaf []byte, proof [][]byte, index uint64) bool
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// RequireValidRoot panics if no valid root exists for the vitaID and dataType.
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RequireValidRoot(d *dao.Simple, vitaID uint64, dataType state.DataType)
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// Address returns the contract's script hash.
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Address() util.Uint160
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}
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)
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// Contracts is a convenient wrapper around an arbitrary set of native contracts
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@ -530,6 +547,12 @@ func (cs *Contracts) Annos() IAnnos {
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return cs.ByName(nativenames.Annos).(IAnnos)
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}
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// Ancora returns native IAncora contract implementation. It panics if
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// there's no contract with proper name in cs.
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func (cs *Contracts) Ancora() IAncora {
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return cs.ByName(nativenames.Ancora).(IAncora)
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}
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// NewDefaultContracts returns a new set of default native contracts.
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func NewDefaultContracts(cfg config.ProtocolConfiguration) []interop.Contract {
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mgmt := NewManagement()
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@ -699,6 +722,11 @@ func NewDefaultContracts(cfg config.ProtocolConfiguration) []interop.Contract {
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// Wire Annos into Eligere for voting age verification
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eligere.Annos = annos
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// Create Ancora (Merkle Root Anchoring) contract
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ancora := newAncora()
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ancora.Vita = vita
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ancora.Tutus = tutus
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return []interop.Contract{
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mgmt,
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s,
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@ -726,5 +754,6 @@ func NewDefaultContracts(cfg config.ProtocolConfiguration) []interop.Contract {
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pons,
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collocatio,
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annos,
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ancora,
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}
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}
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@ -0,0 +1,281 @@
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package native_test
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import (
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"testing"
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"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
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"github.com/stretchr/testify/require"
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"github.com/tutus-one/tutus-chain/pkg/core/native/nativenames"
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"github.com/tutus-one/tutus-chain/pkg/core/state"
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"github.com/tutus-one/tutus-chain/pkg/tutustest"
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"github.com/tutus-one/tutus-chain/pkg/vm/stackitem"
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)
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func newAncoraClient(t *testing.T) *tutustest.ContractInvoker {
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return newNativeClient(t, nativenames.Ancora)
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}
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// TestAncora_GetConfig tests the getConfig method.
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func TestAncora_GetConfig(t *testing.T) {
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c := newAncoraClient(t)
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c.InvokeAndCheck(t, func(t testing.TB, stack []stackitem.Item) {
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require.Equal(t, 1, len(stack))
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arr, ok := stack[0].Value().([]stackitem.Item)
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require.True(t, ok, "expected array result")
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require.Equal(t, 7, len(arr)) // StateAnchorsConfig has 7 fields
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// Check default values
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defaultAlgo, _ := arr[0].TryInteger()
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require.Equal(t, int64(state.TreeAlgorithmSHA256), defaultAlgo.Int64())
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maxProofDepth, _ := arr[1].TryInteger()
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require.Equal(t, int64(32), maxProofDepth.Int64())
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defaultMaxUpdates, _ := arr[2].TryInteger()
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require.Equal(t, int64(10), defaultMaxUpdates.Int64())
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defaultCooldown, _ := arr[3].TryInteger()
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require.Equal(t, int64(1), defaultCooldown.Int64())
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maxHistory, _ := arr[4].TryInteger()
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require.Equal(t, int64(100), maxHistory.Int64())
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erasureGrace, _ := arr[5].TryInteger()
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require.Equal(t, int64(1000), erasureGrace.Int64())
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attestValid, _ := arr[6].TryInteger()
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require.Equal(t, int64(86400), attestValid.Int64())
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}, "getConfig")
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}
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// TestAncora_GetDataRoot_NonExistent tests getting a non-existent data root.
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func TestAncora_GetDataRoot_NonExistent(t *testing.T) {
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c := newAncoraClient(t)
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// Non-existent root should return null
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c.InvokeAndCheck(t, func(t testing.TB, stack []stackitem.Item) {
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require.Equal(t, 1, len(stack))
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require.Nil(t, stack[0].Value(), "expected null for non-existent root")
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}, "getDataRoot", uint64(999), uint32(state.DataTypeMedical))
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}
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// TestAncora_GetProvider_NonExistent tests getting a non-existent provider config.
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func TestAncora_GetProvider_NonExistent(t *testing.T) {
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c := newAncoraClient(t)
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e := c.Executor
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acc := e.NewAccount(t)
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// Non-existent provider should return null
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c.InvokeAndCheck(t, func(t testing.TB, stack []stackitem.Item) {
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require.Equal(t, 1, len(stack))
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require.Nil(t, stack[0].Value(), "expected null for non-existent provider")
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}, "getProvider", uint32(state.DataTypeMedical), acc.ScriptHash())
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}
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// TestAncora_GetErasureInfo_NonExistent tests getting non-existent erasure info.
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func TestAncora_GetErasureInfo_NonExistent(t *testing.T) {
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c := newAncoraClient(t)
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// Non-existent erasure info should return null
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c.InvokeAndCheck(t, func(t testing.TB, stack []stackitem.Item) {
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require.Equal(t, 1, len(stack))
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require.Nil(t, stack[0].Value(), "expected null for non-existent erasure info")
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}, "getErasureInfo", uint64(999), uint32(state.DataTypeMedical))
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}
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// TestAncora_IsProviderActive_NonExistent tests checking non-existent provider.
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func TestAncora_IsProviderActive_NonExistent(t *testing.T) {
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c := newAncoraClient(t)
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e := c.Executor
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acc := e.NewAccount(t)
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// Non-existent provider should return false
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c.Invoke(t, false, "isProviderActive", uint32(state.DataTypeMedical), acc.ScriptHash())
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}
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// TestAncora_RegisterProvider_NoCommittee tests that non-committee cannot register providers.
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func TestAncora_RegisterProvider_NoCommittee(t *testing.T) {
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c := newAncoraClient(t)
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e := c.Executor
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acc := e.NewAccount(t)
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randomInvoker := c.WithSigners(acc)
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// registerProvider takes: dataType, provider, description, maxUpdatesPerBlock, updateCooldown
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randomInvoker.InvokeFail(t, "invalid committee signature",
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"registerProvider",
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uint32(state.DataTypeMedical),
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acc.ScriptHash(),
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"Test Healthcare Provider",
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uint32(10),
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uint32(1),
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)
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}
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// TestAncora_RegisterProvider_CommitteeSuccess tests committee can register providers.
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func TestAncora_RegisterProvider_CommitteeSuccess(t *testing.T) {
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c := newAncoraClient(t)
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e := c.Executor
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providerAcc := e.NewAccount(t)
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// Register a healthcare provider (c is already a CommitteeInvoker)
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c.Invoke(t, true,
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"registerProvider",
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uint32(state.DataTypeMedical),
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providerAcc.ScriptHash(),
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"Test Healthcare Provider",
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uint32(10),
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uint32(1),
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)
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// Verify provider is active
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c.Invoke(t, true, "isProviderActive", uint32(state.DataTypeMedical), providerAcc.ScriptHash())
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// Verify provider info
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c.InvokeAndCheck(t, func(t testing.TB, stack []stackitem.Item) {
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require.Equal(t, 1, len(stack))
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arr, ok := stack[0].Value().([]stackitem.Item)
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require.True(t, ok, "expected array result")
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require.Equal(t, 7, len(arr)) // ProviderConfig has 7 fields
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// Check dataType
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dataType, _ := arr[0].TryInteger()
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require.Equal(t, int64(state.DataTypeMedical), dataType.Int64())
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// Check active status
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active, _ := arr[4].TryBool()
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require.True(t, active)
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}, "getProvider", uint32(state.DataTypeMedical), providerAcc.ScriptHash())
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}
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// TestAncora_RevokeProvider_NoCommittee tests that non-committee cannot revoke providers.
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func TestAncora_RevokeProvider_NoCommittee(t *testing.T) {
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c := newAncoraClient(t)
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e := c.Executor
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acc := e.NewAccount(t)
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randomInvoker := c.WithSigners(acc)
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randomInvoker.InvokeFail(t, "invalid committee signature",
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"revokeProvider",
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uint32(state.DataTypeMedical),
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acc.ScriptHash(),
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)
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}
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// TestAncora_UpdateDataRoot_VitaNotFound tests that updating root for non-existent Vita fails.
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// The contract should fail when the Vita doesn't exist.
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func TestAncora_UpdateDataRoot_VitaNotFound(t *testing.T) {
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c := newAncoraClient(t)
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e := c.Executor
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acc := e.NewAccount(t)
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randomInvoker := c.WithSigners(acc)
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root := hash.Sha256([]byte("test data")).BytesBE()
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// Should fail - when calling updateDataRoot with invalid Vita ID
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// The error could be "vita not found" or "unauthorized" depending on check order
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randomInvoker.InvokeFail(t, "",
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"updateDataRoot",
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uint64(999),
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uint32(state.DataTypeMedical),
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root,
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uint64(100),
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uint32(state.TreeAlgorithmSHA256),
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"1.0.0",
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[]byte{},
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)
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}
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// Note: TestAncora_VerifyProof tests would require complex array serialization
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// that the test framework doesn't support directly. Proof verification is tested
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// via cross-contract integration tests.
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// TestAncora_RequestErasure_Unauthorized tests that erasure request requires Vita ownership.
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// When Vita doesn't exist, OwnerOfInternal returns empty Uint160 and the caller
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// fails the witness check, resulting in "unauthorized" error.
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func TestAncora_RequestErasure_Unauthorized(t *testing.T) {
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c := newAncoraClient(t)
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e := c.Executor
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acc := e.NewAccount(t)
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randomInvoker := c.WithSigners(acc)
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// Should fail - caller is not the Vita owner (Vita doesn't exist)
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randomInvoker.InvokeFail(t, "unauthorized",
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"requestErasure",
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uint64(999),
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uint32(state.DataTypeMedical),
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"GDPR Art. 17",
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)
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}
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// TestAncora_ConfirmErasure_Unauthorized tests that unauthorized providers cannot confirm erasure.
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func TestAncora_ConfirmErasure_Unauthorized(t *testing.T) {
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c := newAncoraClient(t)
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e := c.Executor
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acc := e.NewAccount(t)
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randomInvoker := c.WithSigners(acc)
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randomInvoker.InvokeFail(t, "unauthorized: caller is not authorized provider",
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"confirmErasure",
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uint64(1),
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uint32(state.DataTypeMedical),
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)
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}
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// TestAncora_DenyErasure_NoPending tests that denying non-existent erasure fails.
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func TestAncora_DenyErasure_NoPending(t *testing.T) {
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c := newAncoraClient(t)
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e := c.Executor
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acc := e.NewAccount(t)
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randomInvoker := c.WithSigners(acc)
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randomInvoker.InvokeFail(t, "no pending erasure request",
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"denyErasure",
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uint64(1),
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uint32(state.DataTypeMedical),
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"Legal hold",
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)
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}
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// TestAncora_VerifyPortabilityAttestation_Invalid tests verification of invalid attestation.
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func TestAncora_VerifyPortabilityAttestation_Invalid(t *testing.T) {
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c := newAncoraClient(t)
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// Invalid attestation should return false
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c.Invoke(t, false, "verifyPortabilityAttestation", []byte("invalid attestation"))
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}
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// TestAncora_DataTypes tests that all data types are valid.
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func TestAncora_DataTypes(t *testing.T) {
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// Verify data type constants
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require.Equal(t, state.DataType(0), state.DataTypeMedical)
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require.Equal(t, state.DataType(1), state.DataTypeEducation)
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require.Equal(t, state.DataType(2), state.DataTypeInvestment)
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require.Equal(t, state.DataType(3), state.DataTypeDocuments)
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require.Equal(t, state.DataType(4), state.DataTypeCustom)
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}
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// TestAncora_TreeAlgorithms tests that all tree algorithms are valid.
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func TestAncora_TreeAlgorithms(t *testing.T) {
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// Verify tree algorithm constants
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require.Equal(t, state.TreeAlgorithm(0), state.TreeAlgorithmSHA256)
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require.Equal(t, state.TreeAlgorithm(1), state.TreeAlgorithmKeccak256)
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require.Equal(t, state.TreeAlgorithm(2), state.TreeAlgorithmPoseidon)
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}
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// TestAncora_ErasureStatuses tests that all erasure statuses are valid.
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func TestAncora_ErasureStatuses(t *testing.T) {
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// Verify erasure status constants
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require.Equal(t, state.ErasureStatus(0), state.ErasurePending)
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require.Equal(t, state.ErasureStatus(1), state.ErasureConfirmed)
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require.Equal(t, state.ErasureStatus(2), state.ErasureDenied)
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}
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@ -61,4 +61,6 @@ var (
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Collocatio = util.Uint160{0xf9, 0x9c, 0x85, 0xeb, 0xea, 0x3, 0xa0, 0xd0, 0x69, 0x29, 0x13, 0x95, 0xdd, 0x33, 0xbc, 0x55, 0x53, 0xc6, 0x28, 0xf5}
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// Annos is a hash of native Annos contract.
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Annos = util.Uint160{0xaa, 0xad, 0x31, 0x3a, 0x1a, 0x53, 0x92, 0xd9, 0x98, 0x51, 0xee, 0xa7, 0xe3, 0x14, 0x36, 0xaa, 0x7e, 0xc8, 0xca, 0xf8}
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// Ancora is a hash of native Ancora contract.
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Ancora = util.Uint160{0x30, 0x5f, 0x26, 0x1b, 0x64, 0xdb, 0xfe, 0x5a, 0x2a, 0x37, 0x54, 0x52, 0xc6, 0x98, 0x5c, 0xd3, 0x3, 0x2d, 0xc1, 0x92}
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)
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@ -59,4 +59,6 @@ const (
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Collocatio int32 = -25
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// Annos is an ID of native Annos contract (lifespan/years tracking).
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Annos int32 = -26
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// Ancora is an ID of native Ancora contract (Merkle root anchoring for off-chain data).
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Ancora int32 = -27
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)
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@ -28,6 +28,7 @@ const (
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Pons = "Pons"
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Collocatio = "Collocatio"
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Annos = "Annos"
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Ancora = "Ancora"
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)
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// All contains the list of all native contract names ordered by the contract ID.
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@ -58,6 +59,7 @@ var All = []string{
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Pons,
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Collocatio,
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Annos,
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Ancora,
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}
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// IsValid checks if the name is a valid native contract's name.
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@ -87,5 +89,6 @@ func IsValid(name string) bool {
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name == Palam ||
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name == Pons ||
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name == Collocatio ||
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name == Annos
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name == Annos ||
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name == Ancora
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}
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@ -922,6 +922,22 @@ func (v *Vita) GetTotalTokenCount(d *dao.Simple) uint64 {
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return v.getTokenCounter(d)
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}
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// ExistsInternal checks if a Vita token with the given ID exists.
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func (v *Vita) ExistsInternal(d *dao.Simple, vitaID uint64) bool {
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token, err := v.getTokenByIDInternal(d, vitaID)
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return err == nil && token != nil
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}
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// OwnerOfInternal returns the owner of a Vita token by ID.
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// Returns empty Uint160 if token doesn't exist.
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func (v *Vita) OwnerOfInternal(d *dao.Simple, vitaID uint64) util.Uint160 {
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||||
token, err := v.getTokenByIDInternal(d, vitaID)
|
||||
if err != nil || token == nil {
|
||||
return util.Uint160{}
|
||||
}
|
||||
return token.Owner
|
||||
}
|
||||
|
||||
// IsAdultVerified checks if the owner has a verified "age_verified" attribute
|
||||
// indicating they are 18+ years old. Used for age-restricted purchases.
|
||||
// The attribute must be non-revoked and not expired.
|
||||
|
|
|
|||
|
|
@ -0,0 +1,421 @@
|
|||
package state
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"math/big"
|
||||
|
||||
"github.com/tutus-one/tutus-chain/pkg/io"
|
||||
"github.com/tutus-one/tutus-chain/pkg/util"
|
||||
"github.com/tutus-one/tutus-chain/pkg/vm/stackitem"
|
||||
)
|
||||
|
||||
var errAncoraInvalidStackItem = errors.New("invalid stack item")
|
||||
|
||||
// DataType represents the type of off-chain data being anchored.
|
||||
type DataType uint8
|
||||
|
||||
const (
|
||||
// DataTypeMedical is for Salus healthcare records (HIPAA protected).
|
||||
DataTypeMedical DataType = 0
|
||||
// DataTypeEducation is for Scire education records (certifications, transcripts).
|
||||
DataTypeEducation DataType = 1
|
||||
// DataTypeInvestment is for Collocatio investment records (portfolios, transactions).
|
||||
DataTypeInvestment DataType = 2
|
||||
// DataTypeDocuments is for personal documents (IPFS CIDs).
|
||||
DataTypeDocuments DataType = 3
|
||||
// DataTypeCustom is for government-defined extensions.
|
||||
DataTypeCustom DataType = 4
|
||||
)
|
||||
|
||||
// TreeAlgorithm represents the Merkle tree hash algorithm.
|
||||
type TreeAlgorithm uint8
|
||||
|
||||
const (
|
||||
// TreeAlgorithmSHA256 is the default SHA256 algorithm.
|
||||
TreeAlgorithmSHA256 TreeAlgorithm = 0
|
||||
// TreeAlgorithmKeccak256 is Keccak256 for EVM compatibility.
|
||||
TreeAlgorithmKeccak256 TreeAlgorithm = 1
|
||||
// TreeAlgorithmPoseidon is Poseidon for ZK-proof friendliness.
|
||||
TreeAlgorithmPoseidon TreeAlgorithm = 2
|
||||
)
|
||||
|
||||
// ErasureStatus represents the status of a GDPR erasure request.
|
||||
type ErasureStatus uint8
|
||||
|
||||
const (
|
||||
// ErasurePending means the request is awaiting off-chain deletion.
|
||||
ErasurePending ErasureStatus = 0
|
||||
// ErasureConfirmed means off-chain deletion has been confirmed.
|
||||
ErasureConfirmed ErasureStatus = 1
|
||||
// ErasureDenied means the erasure was denied (legal hold, etc.).
|
||||
ErasureDenied ErasureStatus = 2
|
||||
)
|
||||
|
||||
// RootInfo contains metadata about a Merkle root anchored on-chain.
|
||||
type RootInfo struct {
|
||||
// Root is the 32-byte Merkle root.
|
||||
Root []byte
|
||||
// LeafCount is the number of leaves in the tree.
|
||||
LeafCount uint64
|
||||
// UpdatedAt is the block height of the last update.
|
||||
UpdatedAt uint32
|
||||
// UpdatedBy is the provider script hash that updated this root.
|
||||
UpdatedBy util.Uint160
|
||||
// Version is the incrementing version number.
|
||||
Version uint64
|
||||
// TreeAlgorithm is the hash algorithm used (0=SHA256, 1=Keccak256, 2=Poseidon).
|
||||
TreeAlgorithm TreeAlgorithm
|
||||
// SchemaVersion is the data schema version (e.g., "1.0.0").
|
||||
SchemaVersion string
|
||||
// ContentHash is an optional hash of the serialized tree.
|
||||
ContentHash []byte
|
||||
}
|
||||
|
||||
// EncodeBinary implements io.Serializable.
|
||||
func (r *RootInfo) EncodeBinary(w *io.BinWriter) {
|
||||
w.WriteVarBytes(r.Root)
|
||||
w.WriteU64LE(r.LeafCount)
|
||||
w.WriteU32LE(r.UpdatedAt)
|
||||
r.UpdatedBy.EncodeBinary(w)
|
||||
w.WriteU64LE(r.Version)
|
||||
w.WriteB(byte(r.TreeAlgorithm))
|
||||
w.WriteString(r.SchemaVersion)
|
||||
w.WriteVarBytes(r.ContentHash)
|
||||
}
|
||||
|
||||
// DecodeBinary implements io.Serializable.
|
||||
func (r *RootInfo) DecodeBinary(br *io.BinReader) {
|
||||
r.Root = br.ReadVarBytes()
|
||||
r.LeafCount = br.ReadU64LE()
|
||||
r.UpdatedAt = br.ReadU32LE()
|
||||
r.UpdatedBy.DecodeBinary(br)
|
||||
r.Version = br.ReadU64LE()
|
||||
r.TreeAlgorithm = TreeAlgorithm(br.ReadB())
|
||||
r.SchemaVersion = br.ReadString()
|
||||
r.ContentHash = br.ReadVarBytes()
|
||||
}
|
||||
|
||||
// ToStackItem converts RootInfo to a stack item for VM.
|
||||
func (r *RootInfo) ToStackItem() (stackitem.Item, error) {
|
||||
return stackitem.NewArray([]stackitem.Item{
|
||||
stackitem.NewByteArray(r.Root),
|
||||
stackitem.NewBigInteger(big.NewInt(int64(r.LeafCount))),
|
||||
stackitem.NewBigInteger(big.NewInt(int64(r.UpdatedAt))),
|
||||
stackitem.NewByteArray(r.UpdatedBy.BytesBE()),
|
||||
stackitem.NewBigInteger(big.NewInt(int64(r.Version))),
|
||||
stackitem.NewBigInteger(big.NewInt(int64(r.TreeAlgorithm))),
|
||||
stackitem.NewByteArray([]byte(r.SchemaVersion)),
|
||||
stackitem.NewByteArray(r.ContentHash),
|
||||
}), nil
|
||||
}
|
||||
|
||||
// FromStackItem populates RootInfo from a stack item.
|
||||
func (r *RootInfo) FromStackItem(item stackitem.Item) error {
|
||||
arr, ok := item.Value().([]stackitem.Item)
|
||||
if !ok || len(arr) < 8 {
|
||||
return errAncoraInvalidStackItem
|
||||
}
|
||||
|
||||
root, err := arr[0].TryBytes()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
r.Root = root
|
||||
|
||||
leafCount, err := arr[1].TryInteger()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
r.LeafCount = leafCount.Uint64()
|
||||
|
||||
updatedAt, err := arr[2].TryInteger()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
r.UpdatedAt = uint32(updatedAt.Uint64())
|
||||
|
||||
updatedBy, err := arr[3].TryBytes()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
r.UpdatedBy, err = util.Uint160DecodeBytesBE(updatedBy)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
version, err := arr[4].TryInteger()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
r.Version = version.Uint64()
|
||||
|
||||
algo, err := arr[5].TryInteger()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
r.TreeAlgorithm = TreeAlgorithm(algo.Uint64())
|
||||
|
||||
schema, err := arr[6].TryBytes()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
r.SchemaVersion = string(schema)
|
||||
|
||||
contentHash, err := arr[7].TryBytes()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
r.ContentHash = contentHash
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// ErasureInfo contains metadata about a GDPR erasure request.
|
||||
type ErasureInfo struct {
|
||||
// RequestedAt is the block height when erasure was requested.
|
||||
RequestedAt uint32
|
||||
// RequestedBy is the script hash of the requester.
|
||||
RequestedBy util.Uint160
|
||||
// Reason is the GDPR reason code.
|
||||
Reason string
|
||||
// Status is the current erasure status.
|
||||
Status ErasureStatus
|
||||
// ProcessedAt is when off-chain deletion was confirmed.
|
||||
ProcessedAt uint32
|
||||
// ConfirmedBy is the provider that confirmed deletion.
|
||||
ConfirmedBy util.Uint160
|
||||
// DeniedReason is the reason for denial (if denied).
|
||||
DeniedReason string
|
||||
}
|
||||
|
||||
// EncodeBinary implements io.Serializable.
|
||||
func (e *ErasureInfo) EncodeBinary(w *io.BinWriter) {
|
||||
w.WriteU32LE(e.RequestedAt)
|
||||
e.RequestedBy.EncodeBinary(w)
|
||||
w.WriteString(e.Reason)
|
||||
w.WriteB(byte(e.Status))
|
||||
w.WriteU32LE(e.ProcessedAt)
|
||||
e.ConfirmedBy.EncodeBinary(w)
|
||||
w.WriteString(e.DeniedReason)
|
||||
}
|
||||
|
||||
// DecodeBinary implements io.Serializable.
|
||||
func (e *ErasureInfo) DecodeBinary(br *io.BinReader) {
|
||||
e.RequestedAt = br.ReadU32LE()
|
||||
e.RequestedBy.DecodeBinary(br)
|
||||
e.Reason = br.ReadString()
|
||||
e.Status = ErasureStatus(br.ReadB())
|
||||
e.ProcessedAt = br.ReadU32LE()
|
||||
e.ConfirmedBy.DecodeBinary(br)
|
||||
e.DeniedReason = br.ReadString()
|
||||
}
|
||||
|
||||
// ToStackItem converts ErasureInfo to a stack item for VM.
|
||||
func (e *ErasureInfo) ToStackItem() (stackitem.Item, error) {
|
||||
return stackitem.NewArray([]stackitem.Item{
|
||||
stackitem.NewBigInteger(big.NewInt(int64(e.RequestedAt))),
|
||||
stackitem.NewByteArray(e.RequestedBy.BytesBE()),
|
||||
stackitem.NewByteArray([]byte(e.Reason)),
|
||||
stackitem.NewBigInteger(big.NewInt(int64(e.Status))),
|
||||
stackitem.NewBigInteger(big.NewInt(int64(e.ProcessedAt))),
|
||||
stackitem.NewByteArray(e.ConfirmedBy.BytesBE()),
|
||||
stackitem.NewByteArray([]byte(e.DeniedReason)),
|
||||
}), nil
|
||||
}
|
||||
|
||||
// FromStackItem populates ErasureInfo from a stack item.
|
||||
func (e *ErasureInfo) FromStackItem(item stackitem.Item) error {
|
||||
arr, ok := item.Value().([]stackitem.Item)
|
||||
if !ok || len(arr) < 7 {
|
||||
return errAncoraInvalidStackItem
|
||||
}
|
||||
|
||||
requestedAt, err := arr[0].TryInteger()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
e.RequestedAt = uint32(requestedAt.Uint64())
|
||||
|
||||
requestedBy, err := arr[1].TryBytes()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
e.RequestedBy, err = util.Uint160DecodeBytesBE(requestedBy)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
reason, err := arr[2].TryBytes()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
e.Reason = string(reason)
|
||||
|
||||
status, err := arr[3].TryInteger()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
e.Status = ErasureStatus(status.Uint64())
|
||||
|
||||
processedAt, err := arr[4].TryInteger()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
e.ProcessedAt = uint32(processedAt.Uint64())
|
||||
|
||||
confirmedBy, err := arr[5].TryBytes()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
e.ConfirmedBy, err = util.Uint160DecodeBytesBE(confirmedBy)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
deniedReason, err := arr[6].TryBytes()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
e.DeniedReason = string(deniedReason)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// ProviderConfig contains configuration for an authorized data provider.
|
||||
type ProviderConfig struct {
|
||||
// DataType is the data type this provider is authorized for.
|
||||
DataType DataType
|
||||
// Provider is the script hash of the authorized provider.
|
||||
Provider util.Uint160
|
||||
// Description is a human-readable description.
|
||||
Description string
|
||||
// RegisteredAt is the block height when registered.
|
||||
RegisteredAt uint32
|
||||
// Active indicates if the provider is currently active.
|
||||
Active bool
|
||||
// MaxUpdatesPerBlock is the anti-spam rate limit.
|
||||
MaxUpdatesPerBlock uint32
|
||||
// UpdateCooldown is the blocks between updates per VitaID.
|
||||
UpdateCooldown uint32
|
||||
}
|
||||
|
||||
// EncodeBinary implements io.Serializable.
|
||||
func (p *ProviderConfig) EncodeBinary(w *io.BinWriter) {
|
||||
w.WriteB(byte(p.DataType))
|
||||
p.Provider.EncodeBinary(w)
|
||||
w.WriteString(p.Description)
|
||||
w.WriteU32LE(p.RegisteredAt)
|
||||
w.WriteBool(p.Active)
|
||||
w.WriteU32LE(p.MaxUpdatesPerBlock)
|
||||
w.WriteU32LE(p.UpdateCooldown)
|
||||
}
|
||||
|
||||
// DecodeBinary implements io.Serializable.
|
||||
func (p *ProviderConfig) DecodeBinary(br *io.BinReader) {
|
||||
p.DataType = DataType(br.ReadB())
|
||||
p.Provider.DecodeBinary(br)
|
||||
p.Description = br.ReadString()
|
||||
p.RegisteredAt = br.ReadU32LE()
|
||||
p.Active = br.ReadBool()
|
||||
p.MaxUpdatesPerBlock = br.ReadU32LE()
|
||||
p.UpdateCooldown = br.ReadU32LE()
|
||||
}
|
||||
|
||||
// ToStackItem converts ProviderConfig to a stack item for VM.
|
||||
func (p *ProviderConfig) ToStackItem() (stackitem.Item, error) {
|
||||
return stackitem.NewArray([]stackitem.Item{
|
||||
stackitem.NewBigInteger(big.NewInt(int64(p.DataType))),
|
||||
stackitem.NewByteArray(p.Provider.BytesBE()),
|
||||
stackitem.NewByteArray([]byte(p.Description)),
|
||||
stackitem.NewBigInteger(big.NewInt(int64(p.RegisteredAt))),
|
||||
stackitem.NewBool(p.Active),
|
||||
stackitem.NewBigInteger(big.NewInt(int64(p.MaxUpdatesPerBlock))),
|
||||
stackitem.NewBigInteger(big.NewInt(int64(p.UpdateCooldown))),
|
||||
}), nil
|
||||
}
|
||||
|
||||
// FromStackItem populates ProviderConfig from a stack item.
|
||||
func (p *ProviderConfig) FromStackItem(item stackitem.Item) error {
|
||||
arr, ok := item.Value().([]stackitem.Item)
|
||||
if !ok || len(arr) < 7 {
|
||||
return errAncoraInvalidStackItem
|
||||
}
|
||||
|
||||
dataType, err := arr[0].TryInteger()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
p.DataType = DataType(dataType.Uint64())
|
||||
|
||||
provider, err := arr[1].TryBytes()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
p.Provider, err = util.Uint160DecodeBytesBE(provider)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
description, err := arr[2].TryBytes()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
p.Description = string(description)
|
||||
|
||||
registeredAt, err := arr[3].TryInteger()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
p.RegisteredAt = uint32(registeredAt.Uint64())
|
||||
|
||||
active, err := arr[4].TryBool()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
p.Active = active
|
||||
|
||||
maxUpdates, err := arr[5].TryInteger()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
p.MaxUpdatesPerBlock = uint32(maxUpdates.Uint64())
|
||||
|
||||
cooldown, err := arr[6].TryInteger()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
p.UpdateCooldown = uint32(cooldown.Uint64())
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// StateAnchorsConfig contains configuration for the StateAnchors contract.
|
||||
type StateAnchorsConfig struct {
|
||||
// DefaultTreeAlgorithm is the default hash algorithm (0=SHA256).
|
||||
DefaultTreeAlgorithm TreeAlgorithm
|
||||
// MaxProofDepth is the maximum depth of Merkle proofs (default: 32).
|
||||
MaxProofDepth uint32
|
||||
// DefaultMaxUpdatesPerBlock is the default rate limit.
|
||||
DefaultMaxUpdatesPerBlock uint32
|
||||
// DefaultUpdateCooldown is the default cooldown in blocks.
|
||||
DefaultUpdateCooldown uint32
|
||||
// MaxHistoryVersions is the max history to retain per vitaID+dataType.
|
||||
MaxHistoryVersions uint32
|
||||
// ErasureGracePeriod is blocks before erasure can be denied.
|
||||
ErasureGracePeriod uint32
|
||||
// AttestationValidBlocks is how long attestations are valid.
|
||||
AttestationValidBlocks uint32
|
||||
}
|
||||
|
||||
// DefaultStateAnchorsConfig returns the default configuration.
|
||||
func DefaultStateAnchorsConfig() StateAnchorsConfig {
|
||||
return StateAnchorsConfig{
|
||||
DefaultTreeAlgorithm: TreeAlgorithmSHA256,
|
||||
MaxProofDepth: 32,
|
||||
DefaultMaxUpdatesPerBlock: 10,
|
||||
DefaultUpdateCooldown: 1,
|
||||
MaxHistoryVersions: 100,
|
||||
ErasureGracePeriod: 1000, // ~16 minutes at 1s blocks
|
||||
AttestationValidBlocks: 86400, // ~24 hours
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue