packages/core: add extra layer of hashing for contract args

Author: raykyri

packages/core/src/Canvas.ts

@@ -135,7 +135,7 @@ export class Canvas<
 
 		const topicHashComponents: { args?: Uint8Array; snapshot?: Uint8Array; code?: Uint8Array } = {}
 		if (args.length > 0) {
-			topicHashComponents.args = cbor.encode(args)
+			topicHashComponents.args = sha256(cbor.encode(args))
 		}
 		if (config.snapshot) {
 			topicHashComponents.snapshot = sha256(cbor.encode(config.snapshot))

packages/core/test/contract.topic.test.ts

@@ -11,7 +11,7 @@ function computeTopicHash(components: { args?: any[]; code?: string; snapshot?:
 	const topicHashComponents: { args?: Uint8Array; snapshot?: Uint8Array; code?: Uint8Array } = {}
 
 	if (components.args && components.args.length > 0) {
-		topicHashComponents.args = cbor.encode(components.args)
+		topicHashComponents.args = sha256(cbor.encode(components.args))
 	}
 	if (components.snapshot) {
 		topicHashComponents.snapshot = sha256(cbor.encode(components.snapshot))