First implementation (#1)

Reviewed-on: #1

schemas/revocation.schema.json

@@ -0,0 +1,91 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://paperspec.scient.ing/schemas/revocation.schema.json",
+  "title": "Revocation",
+  "description": "scienting-revocation/1; spec/08-fidelity.md.",
+  "type": "object",
+  "properties": {
+    "format": {
+      "const": "scienting-revocation/1"
+    },
+    "id": {
+      "$ref": "common.schema.json#/$defs/recordId"
+    },
+    "receipt": {
+      "$ref": "common.schema.json#/$defs/recordId"
+    },
+    "signer": {
+      "$ref": "common.schema.json#/$defs/key"
+    },
+    "period": {
+      "type": "object",
+      "properties": {
+        "from": {
+          "$ref": "common.schema.json#/$defs/time"
+        },
+        "to": {
+          "$ref": "common.schema.json#/$defs/time"
+        }
+      },
+      "required": [
+        "from",
+        "to"
+      ],
+      "additionalProperties": false
+    },
+    "reason": {
+      "type": "string",
+      "minLength": 1
+    },
+    "by": {
+      "$ref": "common.schema.json#/$defs/key"
+    },
+    "at": {
+      "$ref": "common.schema.json#/$defs/time"
+    },
+    "signature": {
+      "$ref": "common.schema.json#/$defs/signature"
+    }
+  },
+  "required": [
+    "format",
+    "id",
+    "reason",
+    "by",
+    "at",
+    "signature"
+  ],
+  "additionalProperties": false,
+  "oneOf": [
+    {
+      "required": [
+        "receipt"
+      ],
+      "not": {
+        "anyOf": [
+          {
+            "required": [
+              "signer"
+            ]
+          },
+          {
+            "required": [
+              "period"
+            ]
+          }
+        ]
+      }
+    },
+    {
+      "required": [
+        "signer",
+        "period"
+      ],
+      "not": {
+        "required": [
+          "receipt"
+        ]
+      }
+    }
+  ]
+}