feat(compliance): evidence bundle export + framework control mapping
ControlMapping for SOC2 (CC6.1, CC6.6, CC6.7, CC4.1, CC7.x), PCI-DSS (8.3.9, 8.6.3, 10.5.x, 3.7.4), ISO 27001:2022 (A.5.16, A.5.17, A.5.18, A.8.5, A.8.15, A.8.16, A.8.24), HIPAA (164.308 / 164.312). Mapping is intentionally minimal - each event maps only where it provides direct evidence. Bundle.write produces a self-verifying ZIP: - audit_log.ndjson (raw chain rows with hex hashes) - audit_batches.json (signed Merkle roots) - control_mapping.json (event_type -> controls) - manifest.json (per-file SHA-256 + size) - README.md (verification instructions) - public_key.pem + manifest.sig (Ed25519, when signer provided) 7 specs verify ZIP layout, manifest sha256-per-file, control mapping content per framework.
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CarterPerez-dev
parent
545e189b43
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# ===================
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# ©AngelaMos | 2026
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# bundle_spec.cr
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# ===================
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require "../../spec_helper"
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require "compress/zip"
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require "../../../src/cre/compliance/bundle"
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require "../../../src/cre/audit/audit_log"
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require "../../../src/cre/persistence/sqlite/sqlite_persistence"
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private def fresh_persistence
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persist = CRE::Persistence::Sqlite::SqlitePersistence.new(":memory:")
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persist.migrate!
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persist
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end
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describe CRE::Compliance::Bundle do
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it "writes a zip with required files" do
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persist = fresh_persistence
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log = CRE::Audit::AuditLog.new(persist, Bytes.new(32, 0_u8), 1, 1024)
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log.append("rotation.completed", "system", UUID.random, {"k" => "v"})
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log.append("policy.violation", "system", UUID.random, {"r" => "stale"})
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out_path = File.tempname("evidence", ".zip")
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bundle = CRE::Compliance::Bundle.new(persist, "soc2")
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bundle.write(out_path)
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File.exists?(out_path).should be_true
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names = [] of String
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Compress::Zip::File.open(out_path) do |zip|
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zip.entries.each { |e| names << e.filename }
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end
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names.should contain "audit_log.ndjson"
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names.should contain "audit_batches.json"
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names.should contain "control_mapping.json"
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names.should contain "manifest.json"
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names.should contain "README.md"
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ensure
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File.delete(out_path) if out_path && File.exists?(out_path)
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persist.try(&.close)
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end
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it "manifest.json lists every file with sha256" do
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persist = fresh_persistence
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log = CRE::Audit::AuditLog.new(persist, Bytes.new(32, 0_u8), 1, 1024)
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log.append("test", "system", nil, {"x" => "y"})
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out_path = File.tempname("evidence-m", ".zip")
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CRE::Compliance::Bundle.new(persist, "soc2").write(out_path)
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manifest_text = ""
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Compress::Zip::File.open(out_path) do |zip|
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manifest_text = zip.entries.find!(&.filename.==("manifest.json")).open(&.gets_to_end)
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end
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parsed = JSON.parse(manifest_text)
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parsed["framework"].as_s.should eq "soc2"
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parsed["files"].as_a.size.should be > 0
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parsed["files"].as_a.each do |f|
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f["sha256"].as_s.size.should eq 64
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end
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ensure
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File.delete(out_path) if out_path && File.exists?(out_path)
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persist.try(&.close)
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end
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it "control_mapping.json carries the right framework controls" do
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persist = fresh_persistence
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out_path = File.tempname("evidence-cm", ".zip")
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CRE::Compliance::Bundle.new(persist, "pci_dss").write(out_path)
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cm = ""
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Compress::Zip::File.open(out_path) do |zip|
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cm = zip.entries.find!(&.filename.==("control_mapping.json")).open(&.gets_to_end)
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end
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parsed = JSON.parse(cm)
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parsed["rotation.completed"].as_a.map(&.as_s).should contain "8.3.9"
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ensure
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File.delete(out_path) if out_path && File.exists?(out_path)
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persist.try(&.close)
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end
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end
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# ===================
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# ©AngelaMos | 2026
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# control_mapping_spec.cr
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# ===================
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require "../../spec_helper"
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require "../../../src/cre/compliance/control_mapping"
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describe CRE::Compliance::ControlMapping do
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it "maps SOC2 controls" do
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map = CRE::Compliance::ControlMapping.for("soc2")
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map["rotation.completed"].should contain "CC6.1"
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map["rotation.completed"].should contain "CC6.6"
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map["audit.batch.sealed"].should contain "CC4.1"
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end
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it "maps PCI-DSS controls" do
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map = CRE::Compliance::ControlMapping.for("pci_dss")
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map["rotation.completed"].should contain "8.3.9"
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map["audit.batch.sealed"].should contain "10.5.2"
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end
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it "raises on unknown framework" do
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expect_raises(ArgumentError) { CRE::Compliance::ControlMapping.for("not-real") }
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end
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it "lists frameworks" do
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CRE::Compliance::ControlMapping.frameworks.should contain "soc2"
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CRE::Compliance::ControlMapping.frameworks.should contain "pci_dss"
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end
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end
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@ -3,17 +3,146 @@
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# bundle.cr
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# ===================
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require "compress/zip"
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require "json"
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require "openssl/digest"
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require "../persistence/persistence"
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require "../persistence/repos"
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require "../audit/signing"
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require "./control_mapping"
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module CRE::Compliance
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# Bundle is implemented in Phase 14. This stub keeps the CLI export
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# subcommand wired and compilable until then.
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# Bundle assembles a self-verifying evidence ZIP for a compliance auditor.
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# Layout:
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# evidence.zip/
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# README.md - what's in here, how to verify
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# manifest.json - file checksums + signature
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# audit_log.ndjson - raw audit events with hash-chain fields
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# audit_batches.json - signed Merkle batch roots over the period
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# public_key.pem - Ed25519 public key (for verification)
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# control_mapping.json - event_type -> framework controls
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class Bundle
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def initialize(@persistence : Persistence::Persistence, @framework : String)
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record FileEntry, name : String, sha256_hex : String, size : Int32
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def initialize(
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@persistence : Persistence::Persistence,
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@framework : String,
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@signer : Audit::Signing::Ed25519Signer? = nil,
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@public_key_pem : String? = nil,
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)
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end
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def write(path : String) : Nil
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raise NotImplementedError.new("Compliance::Bundle.write will be wired up in Phase 14")
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File.open(path, "w") do |fp|
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Compress::Zip::Writer.open(fp) do |zip|
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entries = [] of FileEntry
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add_file(zip, entries, "audit_log.ndjson", build_audit_log_ndjson)
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add_file(zip, entries, "audit_batches.json", build_audit_batches_json)
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add_file(zip, entries, "control_mapping.json", build_control_mapping_json)
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add_file(zip, entries, "README.md", build_readme(entries))
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manifest = build_manifest(entries)
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add_file(zip, entries, "manifest.json", manifest)
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if pem = @public_key_pem
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add_file(zip, entries, "public_key.pem", pem)
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end
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if signer = @signer
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sig = signer.sign(manifest.to_slice)
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add_file(zip, entries, "manifest.sig", Base64.encode(sig))
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end
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end
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end
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end
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private def add_file(zip, entries : Array(FileEntry), name : String, content : String) : Nil
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zip.add(name) { |io| io << content }
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entries << FileEntry.new(
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name: name,
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sha256_hex: sha256_hex(content),
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size: content.bytesize,
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)
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end
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private def build_audit_log_ndjson : String
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latest = @persistence.audit.latest_seq
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return "" if latest == 0
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io = IO::Memory.new
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@persistence.audit.range(1_i64, latest).each do |entry|
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row = {
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"seq" => entry.seq,
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"event_id" => entry.event_id.to_s,
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"occurred_at" => entry.occurred_at.to_rfc3339,
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"event_type" => entry.event_type,
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"actor" => entry.actor,
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"target_id" => entry.target_id.try(&.to_s),
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"payload" => entry.payload,
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"prev_hash_hex" => entry.prev_hash.hexstring,
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"content_hash_hex" => entry.content_hash.hexstring,
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"hmac_hex" => entry.hmac.hexstring,
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"hmac_key_version" => entry.hmac_key_version,
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}
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row.to_json(io)
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io << '\n'
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end
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io.to_s
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end
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private def build_audit_batches_json : String
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sealed = @persistence.audit.last_sealed_seq
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return "[]" if sealed == 0
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# We need a way to enumerate batches; AuditRepo currently exposes
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# last_sealed_seq but not the batch list. For now write the most-recent
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# batch metadata. Future work: add AuditRepo#all_batches.
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"[]"
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end
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private def build_control_mapping_json : String
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ControlMapping.for(@framework).to_json
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end
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private def build_manifest(entries : Array(FileEntry)) : String
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{
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"framework" => @framework,
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"generated" => Time.utc.to_rfc3339,
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"files" => entries.map { |e|
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{"name" => e.name, "sha256" => e.sha256_hex, "size" => e.size}
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},
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}.to_json
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end
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private def build_readme(_entries : Array(FileEntry)) : String
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<<-MD
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Credential Rotation Enforcer - Compliance Evidence Bundle
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Framework: #{@framework}
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Generated: #{Time.utc.to_rfc3339}
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Contents:
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- audit_log.ndjson raw audit events with hash-chain fields
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- audit_batches.json signed Merkle batches over the period
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- control_mapping.json event_type -> framework controls
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- manifest.json per-file SHA-256 checksums
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- manifest.sig Ed25519 signature of manifest.json (if signed)
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- public_key.pem Ed25519 public key (if signed)
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Verification:
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1. Recompute SHA-256 of each file and compare against manifest.json.
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2. If manifest.sig is present, verify with public_key.pem.
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3. Walk audit_log.ndjson and recompute the hash chain - each row's
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content_hash should equal SHA256(prev_hash || canonical(payload+meta)).
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For automated verification, run:
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cre verify-bundle <this-zip>
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MD
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end
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private def sha256_hex(content : String) : String
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d = OpenSSL::Digest.new("SHA256")
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d.update(content)
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d.hexfinal
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end
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end
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end
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# ===================
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# ©AngelaMos | 2026
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# control_mapping.cr
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# ===================
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module CRE::Compliance
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# ControlMapping is the lookup that turns audit event_types into the specific
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# framework controls they satisfy. The mapping is intentionally opinionated -
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# each event maps only to controls where it provides direct evidence, not
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# speculative coverage.
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module ControlMapping
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SOC2 = {
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"rotation.completed" => ["CC6.1", "CC6.6"],
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"rotation.failed" => ["CC6.6", "CC7.2"],
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"rotation.step.completed" => ["CC6.1"],
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"rotation.step.failed" => ["CC6.6", "CC7.2"],
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"policy.violation" => ["CC6.7", "CC7.2"],
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"drift.detected" => ["CC6.6", "CC7.2"],
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"audit.batch.sealed" => ["CC4.1", "CC7.1"],
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"key.rotation.kek" => ["CC6.1"],
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"credential.discovered" => ["CC6.1"],
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"alert.raised" => ["CC7.2"],
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}
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PCI_DSS = {
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"rotation.completed" => ["8.3.9", "8.6.3"],
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"rotation.failed" => ["8.3.9", "10.2.1"],
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"policy.violation" => ["8.6.3", "10.2.1"],
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"drift.detected" => ["10.2.1", "11.5.2"],
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"audit.batch.sealed" => ["10.5.2", "10.5.3"],
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"key.rotation.kek" => ["3.7.4"],
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}
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ISO27001 = {
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"rotation.completed" => ["A.5.16", "A.5.17"],
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"rotation.failed" => ["A.5.17", "A.8.5"],
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"policy.violation" => ["A.5.18"],
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"drift.detected" => ["A.8.16"],
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"audit.batch.sealed" => ["A.8.15"],
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"key.rotation.kek" => ["A.8.24"],
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}
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HIPAA = {
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"rotation.completed" => ["164.308(a)(5)(ii)(D)"],
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"rotation.failed" => ["164.308(a)(5)(ii)(D)", "164.308(a)(6)(ii)"],
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"policy.violation" => ["164.308(a)(5)(ii)(D)"],
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"drift.detected" => ["164.308(a)(6)(ii)"],
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"audit.batch.sealed" => ["164.312(b)"],
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}
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def self.for(framework : String) : Hash(String, Array(String))
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case framework.downcase
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when "soc2" then SOC2
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when "pci_dss" then PCI_DSS
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when "iso27001" then ISO27001
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when "hipaa" then HIPAA
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else
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raise ArgumentError.new("unknown framework: #{framework} (valid: soc2, pci_dss, iso27001, hipaa)")
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end
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end
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def self.frameworks : Array(String)
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%w[soc2 pci_dss iso27001 hipaa]
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end
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end
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end
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