Moved manifest hashes generation to signature file

src/PKPass.ts

@@ -4,7 +4,6 @@ import { getModelFolderContents } from "./parser";
 import * as Schemas from "./schemas";
 import { Stream } from "stream";
 import { processDate } from "./processDate";
-import forge from "node-forge";
 import * as Signature from "./signature";
 import * as Strings from "./StringsUtils";
 import { isValidRGB } from "./utils";
@@ -513,16 +512,13 @@ export default class PKPass extends Bundle {
 	private [createManifestSymbol](): Buffer {
 		const manifest = Object.entries(this[filesSymbol]).reduce<{
 			[key: string]: string;
-		}>((acc, [fileName, buffer]) => {
+		}>(
-			const hashFlow = forge.md.sha1.create();
+			(acc, [fileName, buffer]) => ({
-
-			hashFlow.update(buffer.toString("binary"));
-
-			return {
 				...acc,
-				[fileName]: hashFlow.digest().toHex(),
+				[fileName]: Signature.createHash(buffer),
-			};
+			}),
-		}, {});
+			{},
+		);
 
 		return Buffer.from(JSON.stringify(manifest));
 	}

src/signature.ts

@@ -1,6 +1,20 @@
 import forge from "node-forge";
 import type * as Schemas from "./schemas";
 
+/**
+ * Creates an hash for a buffer. Used by manifest
+ *
+ * @param buffer
+ * @returns
+ */
+
+export function createHash(buffer: Buffer) {
+	const hashFlow = forge.md.sha1.create();
+	hashFlow.update(buffer.toString("binary"));
+
+	return hashFlow.digest().toHex();
+}
+
 /**
  * Generates the PKCS #7 cryptografic signature for the manifest file.
  *