Verify reports

packages/cre-sdk/src/sdk/don-info.ts

@@ -0,0 +1,20 @@
+export type Environment = {
+	chainSelector: bigint
+	registryAddress: string
+}
+
+export type Zone = {
+	environment: Environment
+	donID: number
+}
+
+export function productionEnvironment(): Environment {
+	return {
+		chainSelector: 5009297550715157269n,
+		registryAddress: '0x76c9cf548b4179F8901cda1f8623568b58215E62',
+	}
+}
+
+export function zoneFromEnvironment(environment: Environment, donID: number): Zone {
+	return { environment, donID }
+}

packages/cre-sdk/src/sdk/errors.ts

@@ -1,4 +1,4 @@
-import { Mode, type SecretRequest } from '@cre/generated/sdk/v1alpha/sdk_pb'
+import type { SecretRequest } from '@cre/generated/sdk/v1alpha/sdk_pb'
 
 export class DonModeError extends Error {
 	constructor() {
@@ -25,3 +25,55 @@ export class SecretsError extends Error {
 		this.name = 'SecretsError'
 	}
 }
+
+export class NullReportError extends Error {
+	constructor() {
+		super('null report')
+		this.name = 'NullReportError'
+	}
+}
+
+export class WrongSignatureCountError extends Error {
+	constructor() {
+		super('wrong number of signatures')
+		this.name = 'WrongSignatureCountError'
+	}
+}
+
+export class ParseSignatureError extends Error {
+	constructor() {
+		super('failed to parse signature')
+		this.name = 'ParseSignatureError'
+	}
+}
+
+export class RecoverSignerError extends Error {
+	constructor() {
+		super('failed to recover signer address from signature')
+		this.name = 'RecoverSignerError'
+	}
+}
+
+export class UnknownSignerError extends Error {
+	constructor() {
+		super('invalid signature')
+		this.name = 'UnknownSignerError'
+	}
+}
+
+export class DuplicateSignerError extends Error {
+	constructor() {
+		super('duplicate signer')
+		this.name = 'DuplicateSignerError'
+	}
+}
+
+export class RawReportTooShortError extends Error {
+	constructor(
+		public readonly need: number,
+		public readonly got: number,
+	) {
+		super(`raw report too short to contain metadata header: need ${need} bytes, got ${got}`)
+		this.name = 'RawReportTooShortError'
+	}
+}

packages/cre-sdk/src/sdk/index.ts

@@ -1,4 +1,6 @@
 export * from './cre'
+export * from './don-info'
+export * from './errors'
 export * from './report'
 export type * from './runtime'
 export * from './runtime'

packages/cre-sdk/src/sdk/report-internals.ts

@@ -0,0 +1,13 @@
+import type { Address } from 'viem'
+
+// Do not re-export in index.ts to avoid exposing it to the public API.
+// This is public to allow the cache to be cleared in the tests.
+
+export type DonInfo = {
+	f: number
+	signers: Map<Address, number>
+}
+
+// Do not re-export in index.ts to avoid exposing it to the public API.
+// donInfoCache exists outside Report to allow testing to clear the cache.
+export var donInfoCache = new Map<string, DonInfo>()