feat: update plan 16 sec14-26

2026-07-07 15:46:36 +09:00
parent 0c60ed33e9
commit ae4fc7112c
64 changed files with 2231 additions and 116 deletions
@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+set -uo pipefail
+
+# CASAN Plan-16 SEC-23 (23.9, MT-04) — sign + verify the tenant/project registry.
+#
+# An UNSIGNED registry lets an attacker register a fake tenant or swap another
+# tenant's project mapping (bypassing every tenant boundary that trusts it). This
+# signs the registry (detached signature) and verifies it on load. A tampered,
+# forged (wrong key), or unsigned registry is REFUSED — fail-closed by default.
+#
+# Usage:
+#   tenant-registry-verify.sh sign   <registry-file> <priv-key>
+#   tenant-registry-verify.sh verify <registry-file> <pub-key>
+# Exit: 0 ok · 2 invalid/tampered/forged · 3 missing signature/file/openssl · 64 usage.
+# (Production anchors the signature in KMS — see SEC-02; this is the offline form.)
+
+CMD="${1:-}"; REG="${2:-}"; KEY="${3:-}"
+command -v openssl >/dev/null 2>&1 || { echo "REGISTRY_OPENSSL_UNAVAILABLE" >&2; exit 3; }
+
+case "$CMD" in
+  sign)
+    [[ -f "$REG" && -f "$KEY" ]] || { echo "usage: tenant-registry-verify.sh sign <registry> <priv-key>" >&2; exit 64; }
+    if openssl dgst -sha256 -sign "$KEY" -out "$REG.sig" "$REG" 2>/dev/null; then
+      echo "REGISTRY_SIGNED file=$REG sig=$REG.sig"
+      exit 0
+    fi
+    echo "REGISTRY_SIGN_FAILED file=$REG" >&2; exit 2
+    ;;
+  verify)
+    [[ -f "$REG" ]] || { echo "REGISTRY_MISSING file=$REG" >&2; exit 3; }
+    [[ -f "$KEY" ]] || { echo "REGISTRY_PUBKEY_MISSING key=$KEY" >&2; exit 3; }
+    if [[ ! -f "$REG.sig" ]]; then
+      # SEC-23/SEC-01: unsigned registry is REFUSED (fail-closed), not trusted.
+      echo "REGISTRY_UNSIGNED file=$REG — refusing (fail-closed)" >&2; exit 3
+    fi
+    if openssl dgst -sha256 -verify "$KEY" -signature "$REG.sig" "$REG" >/dev/null 2>&1; then
+      echo "REGISTRY_VERIFIED file=$REG"
+      exit 0
+    fi
+    echo "REGISTRY_INVALID file=$REG — tampered or forged signature" >&2; exit 2
+    ;;
+  *)
+    echo "Usage: tenant-registry-verify.sh {sign|verify} <registry-file> <key>" >&2
+    exit 64
+    ;;
+esac