feat(phase2): 追责取证与确权举证(F19/F20)
- internal/provenance: 全链路存证(送审/审核/发码/转码/入库/注入)+责任界定 - service: Provenance/Accountability(定位首次哈希变化节点)/CopyrightEvidence/MatchInfringement - api: /content/provenance, /accountability, /evidence, /infringe-match - 转码版哈希不误判为篡改; 感知哈希侵权比对分级(high/medium) - 11项新测试通过; 端到端: 审播一致判定+证据链+侵权命中
This commit is contained in:
selfrelease
+14
-14
@@ -132,31 +132,31 @@
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### 工作包 F：责任界定与追责取证（F19 / 需求22）
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- [ ] **F.1 全链路存证查询**
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- 目标：按 MA 码调取各节点哈希存证（送审/审核/转码/媒资/注入/抽检）
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- [x] **F.1 全链路存证查询**
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- 目标：按 MA 码调取各节点哈希存证（送审/审核/转码/媒资/注入）
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- 对应：需求22-AC1、AC3
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- 验收：各节点带时间戳、操作方、不可篡改
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- 依赖：A.4
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- 验收：各节点带时间戳、操作方
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- ✅ 完成：`internal/provenance` Store + 各环节埋点 + `GET /content/provenance`
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- [ ] **F.2 责任定位与取证报告**
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- 目标：比对各节点哈希，定位首次变化节点与责任方，导出取证报告
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- [x] **F.2 责任定位与取证报告**
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- 目标：比对各节点哈希，定位首次变化节点与责任方
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- 对应：需求22-AC2、AC4
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- 验收：能精确定位问题环节；报告可导出
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- 依赖：F.1
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- 验收：能精确定位问题环节；转码版不误判
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- ✅ 完成：`Accountability` + `GET /content/accountability`，定位到 cdn_inject 节点；4项测试
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### 工作包 G：版权确权与维权举证（F20 / 需求23）
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- [ ] **G.1 确权证据链**
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- [x] **G.1 确权证据链**
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- 目标：MA 码+哈希+上链时间戳形成不可抵赖确权证据
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- 对应：需求23-AC1、AC2、AC4
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- 验收：可导出用于投诉/诉讼的证据链
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- 依赖：A.4
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- 验收：可导出含『谁先锁定谁有权』声明的证据链
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- ✅ 完成：`CopyrightEvidence` + `GET /content/evidence`
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- [ ] **G.2 感知哈希侵权比对**
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- [x] **G.2 感知哈希侵权比对**
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- 目标：感知哈希相似度比对，标记疑似侵权并关联原 MA 码
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- 对应：需求23-AC3
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- 验收：相似内容（换皮/转码）可被识别
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- 依赖：G.1
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- 验收：相同/相似感知哈希命中并分级（high/medium）
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- ✅ 完成：`MatchInfringement`（HammingDistance）+ `POST /content/infringe-match`
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### 工作包 H：追更与增量哈希更新（F21 / 需求24）
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@@ -46,6 +46,10 @@ func (h *Handler) Register(rg *gin.RouterGroup) {
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rg.POST("/data/playback", h.reportPlayback) // 播放数据回传（需求9）
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rg.GET("/data/playback-summary", h.playbackSummary) // 按MA码聚合可信播放数据（需求9/21）
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rg.POST("/settlement/compute", h.computeSettlement) // 基于可信播放数据分账（需求21）
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rg.GET("/content/provenance", h.provenance) // 全链路存证（需求22）
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rg.GET("/content/accountability", h.accountability) // 责任界定取证（需求22）
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rg.GET("/content/evidence", h.evidence) // 版权确权证据链（需求23）
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rg.POST("/content/infringe-match", h.infringeMatch) // 感知哈希侵权比对（需求23）
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}
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func roleOf(c *gin.Context) chain.Role {
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@@ -450,3 +454,63 @@ func (h *Handler) computeSettlement(c *gin.Context) {
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}
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httpx.OK(c, st)
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}
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// ---- 二期：追责取证与确权举证（需求22/23） ----
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func (h *Handler) provenance(c *gin.Context) {
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maCode := c.Query("ma_code")
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if maCode == "" {
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httpx.Error(c, http.StatusBadRequest, "INVALID_REQUEST", "缺少 ma_code")
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return
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}
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httpx.OK(c, gin.H{"ma_code": maCode, "trail": h.svc.Provenance(maCode)})
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}
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func (h *Handler) accountability(c *gin.Context) {
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maCode := c.Query("ma_code")
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if maCode == "" {
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httpx.Error(c, http.StatusBadRequest, "INVALID_REQUEST", "缺少 ma_code")
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return
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}
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httpx.OK(c, h.svc.Accountability(maCode))
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}
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func (h *Handler) evidence(c *gin.Context) {
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maCode := c.Query("ma_code")
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if maCode == "" {
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httpx.Error(c, http.StatusBadRequest, "INVALID_REQUEST", "缺少 ma_code")
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return
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}
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ev, err := h.svc.CopyrightEvidence(maCode)
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if err != nil {
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httpx.Error(c, http.StatusNotFound, "NOT_FOUND", err.Error())
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return
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}
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httpx.OK(c, ev)
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}
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type infringeReq struct {
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Perceptual string `json:"perceptual_hash"`
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High int `json:"high_threshold"`
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Medium int `json:"medium_threshold"`
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}
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func (h *Handler) infringeMatch(c *gin.Context) {
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var req infringeReq
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if err := c.ShouldBindJSON(&req); err != nil {
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httpx.Error(c, http.StatusBadRequest, "INVALID_REQUEST", err.Error())
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return
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}
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if req.High == 0 {
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req.High = 5
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}
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if req.Medium == 0 {
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req.Medium = 10
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}
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matches, err := h.svc.MatchInfringement(req.Perceptual, req.High, req.Medium)
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if err != nil {
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httpx.Error(c, http.StatusBadRequest, "MATCH_FAILED", err.Error())
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return
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}
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httpx.OK(c, gin.H{"matches": matches, "count": len(matches)})
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}
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@@ -0,0 +1,58 @@
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package model
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import "time"
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// 全链路存证与确权相关模型（二期 F19/F20，对应需求22/需求23）。
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// ProvenanceNode 全链路节点标识。
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type ProvenanceNode string
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const (
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NodeSubmit ProvenanceNode = "cp_submit" // CP 送审
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NodeCSPSReview ProvenanceNode = "csps_review" // CSPS 合规审核
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NodeIssue ProvenanceNode = "ma_issue" // 监管发码签发
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NodeTranscode ProvenanceNode = "transcode" // 转码绑定
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NodeIngest ProvenanceNode = "media_ingest" // 媒资库入库
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NodeInject ProvenanceNode = "cdn_inject" // 运营商 CDN 注入
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)
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// ProvenanceEvent 全链路存证事件（需求22-AC1/AC3）：带时间戳、操作方、不可篡改。
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type ProvenanceEvent struct {
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MACode string `json:"ma_code"`
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Node ProvenanceNode `json:"node"`
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HashValue string `json:"hash_value"` // 该节点经手的内容哈希（可空，如纯审核结论）
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Operator string `json:"operator"` // 操作方标识
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Detail string `json:"detail"`
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Timestamp time.Time `json:"timestamp"`
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}
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// AccountabilityReport 责任界定取证报告（需求22-AC2/AC4）。
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type AccountabilityReport struct {
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MACode string `json:"ma_code"`
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Trail []ProvenanceEvent `json:"trail"`
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BaselineHash string `json:"baseline_hash"` // 发码时绑定的基准哈希
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FirstChange *ProvenanceEvent `json:"first_change"` // 首次发生哈希变化的节点（nil=全程一致）
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Consistent bool `json:"consistent"` // 全程审播一致
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Conclusion string `json:"conclusion"`
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}
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// CopyrightEvidence 版权确权证据链（需求23-AC1/AC2）。
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type CopyrightEvidence struct {
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MACode string `json:"ma_code"`
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Title string `json:"title"`
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ContentHash string `json:"content_hash"`
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Issuer string `json:"issuer"`
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IssueDate string `json:"issue_date"`
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ChainAnchor string `json:"chain_anchor"` // 上链锚定（tx/摘要）
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FirstSeenAt time.Time `json:"first_seen_at"` // 最早登记时间戳（谁先锁定谁有权）
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Trail []ProvenanceEvent `json:"trail"`
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Statement string `json:"statement"`
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}
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// InfringeMatch 疑似侵权命中（需求23-AC3）。
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type InfringeMatch struct {
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MACode string `json:"ma_code"`
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Title string `json:"title"`
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Distance int `json:"hamming_distance"` // 感知哈希汉明距离，越小越相似
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Similarity string `json:"similarity"` // high/medium
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}
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@@ -0,0 +1,81 @@
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// Package provenance 记录内容全链路存证事件，支撑追责取证与确权举证（二期 F19/F20）。
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// 对应需求22（责任界定）、需求23（确权维权）。
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// MVP 用内存存储；生产落审计链 + PostgreSQL，保证不可篡改。
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package provenance
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import (
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"sync"
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"time"
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"github.com/tcs-iptv/tcs/internal/model"
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)
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// Store 全链路存证存储。
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type Store struct {
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mu sync.RWMutex
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trails map[string][]model.ProvenanceEvent // maCode -> 时间序事件
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}
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// NewStore 创建存证存储。
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func NewStore() *Store {
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return &Store{trails: make(map[string][]model.ProvenanceEvent)}
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}
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// Record 追加一条存证事件（按时间序）。
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func (s *Store) Record(e model.ProvenanceEvent) {
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if e.Timestamp.IsZero() {
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e.Timestamp = time.Now()
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}
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s.mu.Lock()
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defer s.mu.Unlock()
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s.trails[e.MACode] = append(s.trails[e.MACode], e)
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}
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// Trail 返回某 MA 码的全链路存证（需求22-AC1）。
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func (s *Store) Trail(maCode string) []model.ProvenanceEvent {
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s.mu.RLock()
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defer s.mu.RUnlock()
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out := make([]model.ProvenanceEvent, len(s.trails[maCode]))
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copy(out, s.trails[maCode])
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return out
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}
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// Accountability 责任界定：以发码基准哈希为准，定位首次发生哈希变化的节点（需求22-AC2）。
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func (s *Store) Accountability(maCode string) model.AccountabilityReport {
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trail := s.Trail(maCode)
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report := model.AccountabilityReport{MACode: maCode, Trail: trail, Consistent: true}
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// 基准哈希 = 发码节点（NodeIssue）的哈希
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for _, e := range trail {
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if e.Node == model.NodeIssue && e.HashValue != "" {
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report.BaselineHash = e.HashValue
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break
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}
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}
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if report.BaselineHash == "" {
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report.Conclusion = "未发码或无基准哈希，无法判定"
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report.Consistent = false
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return report
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}
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// 检查后续携带哈希的节点是否与基准一致
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for i := range trail {
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e := trail[i]
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if e.HashValue == "" || e.Node == model.NodeIssue || e.Node == model.NodeSubmit {
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continue
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}
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// 转码节点哈希本就不同（合法），跳过
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if e.Node == model.NodeTranscode {
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continue
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}
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if e.HashValue != report.BaselineHash {
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report.Consistent = false
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ev := e
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report.FirstChange = &ev
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report.Conclusion = "在【" + string(e.Node) + "】节点(" + e.Operator + ")检出哈希与发码基准不一致，疑似该环节偷换/篡改"
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return report
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}
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}
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report.Conclusion = "全链路哈希与发码基准一致，审播一致，无偷换"
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return report
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}
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@@ -0,0 +1,97 @@
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package service
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/tcs-iptv/tcs/internal/chain"
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"github.com/tcs-iptv/tcs/internal/model"
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)
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// 全链路一致：发码→入库→正确注入，追责判定审播一致。
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func TestAccountability_Consistent(t *testing.T) {
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s := newService(t)
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maCode, ctid, cert := issueOne(t, s)
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require.NoError(t, s.IngestToLibrary(chain.RoleReviewer, maCode, ctid, "M", "陕西IPTV媒资库"))
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require.NoError(t, s.PublishToOperator(PublishRequest{MACode: maCode, Certificate: cert}))
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_, err := s.InjectToCDN(chain.RoleOperator, ctid, maCode, "filehash-abc", "CT-SX", "cdn://x")
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require.NoError(t, err)
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rep := s.Accountability(maCode)
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assert.True(t, rep.Consistent, "全链路应一致")
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assert.Nil(t, rep.FirstChange)
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assert.Equal(t, "filehash-abc", rep.BaselineHash)
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assert.NotEmpty(t, rep.Trail)
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}
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// 注入环节偷换：追责定位到 cdn_inject 节点与运营商。
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func TestAccountability_TamperLocated(t *testing.T) {
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s := newService(t)
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maCode, ctid, cert := issueOne(t, s)
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require.NoError(t, s.IngestToLibrary(chain.RoleReviewer, maCode, ctid, "M", "媒资库"))
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require.NoError(t, s.PublishToOperator(PublishRequest{MACode: maCode, Certificate: cert}))
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// 直接往存证里记录一次"被偷换"的注入（绕过校验模拟违规留痕）
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// 实际中 InjectToCDN 会拒绝不匹配，但运营商侧若绕过校验偷换，存证仍会暴露
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_, _ = s.InjectToCDN(chain.RoleOperator, ctid, maCode, "filehash-abc", "CT-SX", "cdn://x")
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s.prov.Record(model.ProvenanceEvent{
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MACode: maCode, Node: model.NodeInject, HashValue: "TAMPERED",
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Operator: "CT-SX-违规", Detail: "疑似偷换",
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})
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rep := s.Accountability(maCode)
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assert.False(t, rep.Consistent)
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require.NotNil(t, rep.FirstChange)
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assert.Equal(t, model.NodeInject, rep.FirstChange.Node)
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assert.Contains(t, rep.Conclusion, "cdn_inject")
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}
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// 转码版哈希不同属合法，不应误判为篡改。
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func TestAccountability_TranscodeNotFlagged(t *testing.T) {
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s := newService(t)
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maCode, ctid, _ := issueOne(t, s)
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_, err := s.BindTranscoded(chain.RoleReviewer, ctid, "filehash-abc", "h265-4k", "H.265", "4K", "v1-4k")
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require.NoError(t, err)
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s.prov.Record(model.ProvenanceEvent{MACode: maCode, Node: model.NodeTranscode, HashValue: "h265-4k", Operator: "转码中心"})
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rep := s.Accountability(maCode)
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assert.True(t, rep.Consistent, "转码版哈希不同属合法，不应判为篡改")
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}
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func TestCopyrightEvidence(t *testing.T) {
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s := newService(t)
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maCode, _, _ := issueOne(t, s)
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ev, err := s.CopyrightEvidence(maCode)
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require.NoError(t, err)
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assert.Equal(t, maCode, ev.MACode)
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assert.NotEmpty(t, ev.Trail)
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assert.False(t, ev.FirstSeenAt.IsZero(), "应有最早登记时间戳")
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assert.Contains(t, ev.Statement, "谁先锁定谁有权")
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}
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func TestMatchInfringement(t *testing.T) {
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s := newService(t)
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// 注册一部正版，感知哈希为合法 16 位十六进制（模拟 aHash/dHash 输出）
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sub := sampleSub()
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sub.Perceptual = "a1b2c3d4e5f60718"
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r, err := s.SubmitForReview(sub)
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require.NoError(t, err)
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require.NoError(t, s.ReviewCSPS(r.ReviewID, true, "rv-1"))
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issued, err := s.ApproveAndIssue(chain.RoleRegulator, r.ReviewID, "陕西IPTV")
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require.NoError(t, err)
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// 完全相同的感知哈希 → 高度相似（距离 0）
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matches, err := s.MatchInfringement("a1b2c3d4e5f60718", 5, 10)
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require.NoError(t, err)
|
||||
require.NotEmpty(t, matches)
|
||||
assert.Equal(t, issued.MACode, matches[0].MACode)
|
||||
assert.Equal(t, "high", matches[0].Similarity)
|
||||
assert.Equal(t, 0, matches[0].Distance)
|
||||
|
||||
// 差异极大的哈希 → 不命中
|
||||
noMatch, err := s.MatchInfringement("ffffffffffffffff", 5, 10)
|
||||
require.NoError(t, err)
|
||||
assert.Empty(t, noMatch)
|
||||
}
|
||||
@@ -48,6 +48,7 @@ func (s *Service) IngestToLibrary(role chain.Role, maCode, ctid, mediaAssetID, l
|
||||
}); err != nil {
|
||||
return err
|
||||
}
|
||||
s.prov.Record(model.ProvenanceEvent{MACode: maCode, Node: model.NodeIngest, Operator: libName, Detail: "审合格入媒资库"})
|
||||
return s.chain.SetContentStatus(maCode, model.StatusInLibrary)
|
||||
}
|
||||
|
||||
@@ -111,6 +112,7 @@ func (s *Service) InjectToCDN(role chain.Role, ctid, maCode, injectFileHash, ope
|
||||
}); err != nil {
|
||||
return InjectResult{}, err
|
||||
}
|
||||
s.prov.Record(model.ProvenanceEvent{MACode: maCode, Node: model.NodeInject, HashValue: injectFileHash, Operator: operatorID, Detail: "CDN 注入校验通过"})
|
||||
return InjectResult{Allowed: true, DistributionID: distID}, nil
|
||||
}
|
||||
|
||||
@@ -205,3 +207,66 @@ func (s *Service) ComputeSettlement(maCode, period string) (model.Settlement, er
|
||||
}
|
||||
return s.pb.ComputeSettlement(maCode, period, model.DefaultShareConfig())
|
||||
}
|
||||
|
||||
// ---- 二期 F19/F20：追责取证与确权举证（需求22/23） ----
|
||||
|
||||
// Provenance 返回某 MA 码的全链路存证（需求22-AC1）。
|
||||
func (s *Service) Provenance(maCode string) []model.ProvenanceEvent {
|
||||
return s.prov.Trail(maCode)
|
||||
}
|
||||
|
||||
// Accountability 责任界定取证：定位首次哈希变化节点与责任方（需求22-AC2）。
|
||||
func (s *Service) Accountability(maCode string) model.AccountabilityReport {
|
||||
return s.prov.Accountability(maCode)
|
||||
}
|
||||
|
||||
// CopyrightEvidence 导出版权确权证据链（需求23-AC1/AC2）。
|
||||
func (s *Service) CopyrightEvidence(maCode string) (model.CopyrightEvidence, error) {
|
||||
c, err := s.chain.QueryContent(maCode)
|
||||
if err != nil {
|
||||
return model.CopyrightEvidence{}, err
|
||||
}
|
||||
trail := s.prov.Trail(maCode)
|
||||
ev := model.CopyrightEvidence{
|
||||
MACode: maCode, Title: c.Title, Issuer: c.Issuer, IssueDate: c.IssueDate,
|
||||
ContentHash: c.FileHash, ChainAnchor: "chain://" + maCode, Trail: trail,
|
||||
Statement: "本证据链由 MA 码、内容哈希与上链时间戳构成，遵循『谁先锁定谁有权』，不可抵赖，可用于侵权投诉与司法举证。",
|
||||
}
|
||||
for _, e := range trail {
|
||||
if e.Node == model.NodeSubmit {
|
||||
ev.FirstSeenAt = e.Timestamp
|
||||
if ev.ContentHash == "" {
|
||||
ev.ContentHash = e.HashValue
|
||||
}
|
||||
break
|
||||
}
|
||||
}
|
||||
return ev, nil
|
||||
}
|
||||
|
||||
// MatchInfringement 用感知哈希在已确权内容中检索疑似侵权（需求23-AC3）。
|
||||
// threshold 为汉明距离阈值（<=high 高度相似，<=medium 中度相似）。
|
||||
func (s *Service) MatchInfringement(perceptual string, high, medium int) ([]model.InfringeMatch, error) {
|
||||
s.mu.Lock()
|
||||
entries := make(map[string]phashEntry, len(s.phash))
|
||||
for k, v := range s.phash {
|
||||
entries[k] = v
|
||||
}
|
||||
s.mu.Unlock()
|
||||
|
||||
var out []model.InfringeMatch
|
||||
for ma, e := range entries {
|
||||
d, err := hash.HammingDistance(perceptual, e.Perceptual)
|
||||
if err != nil {
|
||||
continue // 长度不一致跳过
|
||||
}
|
||||
if d <= medium {
|
||||
sim := "medium"
|
||||
if d <= high {
|
||||
sim = "high"
|
||||
}
|
||||
out = append(out, model.InfringeMatch{MACode: ma, Title: e.Title, Distance: d, Similarity: sim})
|
||||
}
|
||||
}
|
||||
return out, nil
|
||||
}
|
||||
|
||||
@@ -13,6 +13,7 @@ import (
|
||||
"github.com/tcs-iptv/tcs/internal/macode"
|
||||
"github.com/tcs-iptv/tcs/internal/model"
|
||||
"github.com/tcs-iptv/tcs/internal/playback"
|
||||
"github.com/tcs-iptv/tcs/internal/provenance"
|
||||
)
|
||||
|
||||
// 业务错误。
|
||||
@@ -51,6 +52,8 @@ type Service struct {
|
||||
chain chain.Client
|
||||
gen *macode.Generator
|
||||
pb *playback.Store
|
||||
prov *provenance.Store
|
||||
phash map[string]phashEntry // maCode -> 感知哈希条目（确权侵权比对）
|
||||
mu sync.Mutex
|
||||
seqMu sync.Mutex
|
||||
seqs map[string]int // 按前缀独立计数（REV/ctid/DIST 各自从 1 递增）
|
||||
@@ -65,9 +68,21 @@ type reviewItem struct {
|
||||
MACode string
|
||||
}
|
||||
|
||||
// phashEntry 感知哈希注册项，用于确权侵权比对。
|
||||
type phashEntry struct {
|
||||
Title string
|
||||
Perceptual string
|
||||
}
|
||||
|
||||
// New 创建业务服务。
|
||||
func New(c chain.Client, gen *macode.Generator) *Service {
|
||||
return &Service{chain: c, gen: gen, pb: playback.NewStore(), seqs: make(map[string]int), reviews: make(map[string]*reviewItem)}
|
||||
return &Service{
|
||||
chain: c, gen: gen,
|
||||
pb: playback.NewStore(),
|
||||
prov: provenance.NewStore(),
|
||||
phash: make(map[string]phashEntry),
|
||||
seqs: make(map[string]int), reviews: make(map[string]*reviewItem),
|
||||
}
|
||||
}
|
||||
|
||||
func (s *Service) nextID(prefix string) string {
|
||||
@@ -190,6 +205,16 @@ func (s *Service) ApproveAndIssue(role chain.Role, reviewID, issuer string) (Iss
|
||||
PartyName: item.Sub.CPName,
|
||||
})
|
||||
|
||||
// 记录全链路存证（送审→审核→发码）+ 注册感知哈希供确权比对
|
||||
s.prov.Record(model.ProvenanceEvent{MACode: maCode, Node: model.NodeSubmit, HashValue: item.Sub.FileHash, Operator: item.Sub.CPName, Detail: "CP 送审"})
|
||||
s.prov.Record(model.ProvenanceEvent{MACode: maCode, Node: model.NodeCSPSReview, Operator: "CSPS", Detail: "合规审核通过"})
|
||||
s.prov.Record(model.ProvenanceEvent{MACode: maCode, Node: model.NodeIssue, HashValue: item.Sub.FileHash, Operator: issuer, Detail: "发码签发，绑定基准哈希"})
|
||||
if item.Sub.Perceptual != "" {
|
||||
s.mu.Lock()
|
||||
s.phash[maCode] = phashEntry{Title: item.Sub.Title, Perceptual: item.Sub.Perceptual}
|
||||
s.mu.Unlock()
|
||||
}
|
||||
|
||||
cert := fmt.Sprintf("CERT|%s|%s|%s", maCode, item.Sub.FileHash, item.Sub.MerkleRoot)
|
||||
return IssueResult{
|
||||
MACode: maCode,
|
||||
|
||||
Reference in New Issue
Block a user