sigstore · loosebazooka · Dec 6, 2024 · Nov 22, 2024
diff --git a/fuzzing/src/main/java/fuzzing/RekorTypesFuzzer.java b/fuzzing/src/main/java/fuzzing/RekorTypesFuzzer.java
@@ -29,12 +29,17 @@ public class RekorTypesFuzzer {
 
   public static void fuzzerTestOneInput(FuzzedDataProvider data) {
     try {
+      int type = data.pickValue(new int[] {0, 1});
       String string = data.consumeRemainingAsString();
 
       URI uri = new URI(URL);
       RekorEntry entry = RekorResponse.newRekorResponse(uri, string).getEntry();
 
-      RekorTypes.getHashedRekord(entry);
+      if (type == 0) {
+        RekorTypes.getHashedRekord(entry);
+      } else {
+        RekorTypes.getDsse(entry);
+      }
     } catch (URISyntaxException | RekorTypeException | RekorParseException e) {
       // Known exception
     }

diff --git a/sigstore-java/src/main/java/dev/sigstore/rekor/client/HashedRekordRequest.java b/sigstore-java/src/main/java/dev/sigstore/rekor/client/HashedRekordRequest.java
@@ -19,7 +19,7 @@
 
 import com.google.common.hash.Hashing;
 import com.google.common.primitives.Bytes;
-import dev.sigstore.rekor.*;
+import dev.sigstore.rekor.hashedRekord.v0_0_1.*;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 import java.util.Base64;

diff --git a/sigstore-java/src/main/java/dev/sigstore/rekor/client/RekorTypeException.java b/sigstore-java/src/main/java/dev/sigstore/rekor/client/RekorTypeException.java
@@ -19,4 +19,8 @@ public class RekorTypeException extends Exception {
   public RekorTypeException(String message) {
     super(message);
   }
+
+  public RekorTypeException(String message, Throwable reason) {
+    super(message, reason);
+  }
 }
diff --git a/sigstore-java/src/main/java/dev/sigstore/rekor/client/RekorTypes.java b/sigstore-java/src/main/java/dev/sigstore/rekor/client/RekorTypes.java
@@ -17,7 +17,9 @@
 
 import static dev.sigstore.json.GsonSupplier.GSON;
 
-import dev.sigstore.rekor.HashedRekord;
+import com.google.gson.JsonParseException;
+import dev.sigstore.rekor.dsse.v0_0_1.Dsse;
+import dev.sigstore.rekor.hashedRekord.v0_0_1.HashedRekord;
 
 /** Parser for the body.spec element of {@link RekorEntry}. */
 public class RekorTypes {
@@ -27,12 +29,33 @@ public class RekorTypes {
    *
    * @param entry the rekor entry obtained from rekor
    * @return the parsed pojo
-   * @throws RekorTypeException if the kind != hashedrekord or apiVersion != 0.0.1
+   * @throws RekorTypeException if the hashrekord:0.0.1 entry could not be parsed
    */
   public static HashedRekord getHashedRekord(RekorEntry entry) throws RekorTypeException {
     expect(entry, "hashedrekord", "0.0.1");
 
-    return GSON.get().fromJson(entry.getBodyDecoded().getSpec(), HashedRekord.class);
+    try {
+      return GSON.get().fromJson(entry.getBodyDecoded().getSpec(), HashedRekord.class);
+    } catch (JsonParseException jpe) {
+      throw new RekorTypeException("Could not parse hashrekord:0.0.1", jpe);
+    }
+  }
+
+  /**
+   * Parse a dsse from rekor at api version 0.0.1.
+   *
+   * @param entry the rekor entry obtained from rekor
+   * @return the parsed pojo
+   * @throws RekorTypeException if the dsse:0.0.1 entry could not be parsed
+   */
+  public static Dsse getDsse(RekorEntry entry) throws RekorTypeException {
+    expect(entry, "dsse", "0.0.1");
+
+    try {
+      return GSON.get().fromJson(entry.getBodyDecoded().getSpec(), Dsse.class);
+    } catch (JsonParseException jpe) {
+      throw new RekorTypeException("Could not parse dsse:0.0.1", jpe);
+    }
   }
 
   private static void expect(RekorEntry entry, String expectedKind, String expectedApiVersion)

diff --git a/sigstore-java/src/main/resources/rekor/model/dsse/v0.0.1/dsse.json b/sigstore-java/src/main/resources/rekor/model/dsse/v0.0.1/dsse.json
@@ -0,0 +1,96 @@
+{
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "$id": "http://rekor.sigstore.dev/types/dsse/dsse_v0_0_1_schema.json",
+    "title": "DSSE v0.0.1 Schema",
+    "description": "Schema for DSSE envelopes",
+    "type": "object",
+    "properties": {
+        "proposedContent": {
+            "type": "object",
+            "properties": {
+                "envelope": {
+                    "description": "DSSE envelope specified as a stringified JSON object",
+                    "type": "string",
+                    "writeOnly": true
+                },
+                "verifiers": {
+                    "description": "collection of all verification material (e.g. public keys or certificates) used to verify signatures over envelope's payload, specified as base64-encoded strings",
+                    "type": "array",
+                    "minItems": 1,
+                    "items": {
+                        "type": "string",
+                        "format": "byte"
+                    },
+                    "writeOnly": true
+                }
+            },
+            "writeOnly": true,
+            "required": [ "envelope", "verifiers" ]
+        },
+        "signatures": {
+            "description": "extracted collection of all signatures of the envelope's payload; elements will be sorted by lexicographical order of the base64 encoded signature strings",
+            "type": "array",
+            "minItems": 1,
+            "items": {
+                "description": "a signature of the envelope's payload along with the verification material for the signature",
+                "type": "object",
+                "properties": {
+                    "signature": {
+                        "description": "base64 encoded signature of the payload",
+                        "type": "string",
+                        "pattern": "^(?:[A-Za-z0-9+\\/]{4})*(?:[A-Za-z0-9+\\/]{2}==|[A-Za-z0-9+\\/]{3}=|[A-Za-z0-9+\\/]{4})$"
+                    },
+                    "verifier": {
+                        "description": "verification material that was used to verify the corresponding signature, specified as a base64 encoded string",
+                        "type": "string",
+                        "format": "byte"
+                    }
+                },
+                "required": [ "signature", "verifier" ]
+            },
+            "readOnly": true
+        },
+        "envelopeHash": {
+            "description": "Specifies the hash algorithm and value encompassing the entire envelope sent to Rekor",
+            "type": "object",
+            "properties": {
+                "algorithm": {
+                    "description": "The hashing function used to compute the hash value",
+                    "type": "string",
+                    "enum": [ "sha256" ]
+                },
+                "value": {
+                    "description": "The value of the computed digest over the entire envelope",
+                    "type": "string"
+                }
+            },
+            "required": [ "algorithm", "value" ],
+            "readOnly": true
+        },
+        "payloadHash": {
+            "description": "Specifies the hash algorithm and value covering the payload within the DSSE envelope",
+            "type": "object",
+            "properties": {
+                "algorithm": {
+                    "description": "The hashing function used to compute the hash value",
+                    "type": "string",
+                    "enum": [ "sha256" ]
+                },
+                "value": {
+                    "description": "The value of the computed digest over the payload within the envelope",
+                    "type": "string"
+                }
+            },
+            "required": [ "algorithm", "value" ],
+            "readOnly": true
+        }
+    },
+    "oneOf": [
+        {
+            "required": [ "proposedContent" ]
+        },
+        {
+            "required": [ "signatures", "envelopeHash", "payloadHash" ]
+        }
+    ]
+}
diff --git a/...n/resources/rekor/model/hashedRekord.json → ...del/hashedRekord/v0.0.1/hashedRekord.json b/...n/resources/rekor/model/hashedRekord.json → ...del/hashedRekord/v0.0.1/hashedRekord.json
@@ -1,6 +1,6 @@
 {
     "$schema": "http://json-schema.org/draft-07/schema#",
-    "$id": "http://rekor.sigstore.dev/types/rekord/rekord_v0_0_1_schema.json",
+    "$id": "http://rekor.sigstore.dev/types/rekord/hashedrekord_v0_0_1_schema.json",
     "title": "Hashed Rekor v0.0.1 Schema",
     "description": "Schema for Hashed Rekord object",
     "type": "object",
@@ -15,11 +15,11 @@
                     "format": "byte"
                 },
                 "publicKey" : {
-                    "description": "The public key that can verify the signature",
+                    "description": "The public key that can verify the signature; this can also be an X509 code signing certificate that contains the raw public key information",
                     "type": "object",
                     "properties": {
                         "content": {
-                            "description": "Specifies the content of the public key inline within the document",
+                            "description": "Specifies the content of the public key or code signing certificate inline within the document",
                             "type": "string",
                             "format": "byte"
                         }
@@ -38,16 +38,16 @@
                         "algorithm": {
                             "description": "The hashing function used to compute the hash value",
                             "type": "string",
-                            "enum": [ "sha256" ]
+                            "enum": [ "sha256", "sha384", "sha512" ]
                         },
                         "value": {
-                            "description": "The hash value for the content",
+                            "description": "The hash value for the content, as represented by a lower case hexadecimal string",
                             "type": "string"
                         }
                     },
                     "required": [ "algorithm", "value" ]
                 }
-            }        
+            }
         }
     },
     "required": [ "signature", "data" ]