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{"version":3,"sources":["../../src/account/MultiKeyAccount.ts"],"sourcesContent":["// Copyright © Aptos Foundation\n// SPDX-License-Identifier: Apache-2.0\n\nimport { Account } from \"./Account\";\nimport { MultiKey, MultiKeySignature, PublicKey } from \"../core/crypto\";\nimport { AccountAddress, AccountAddressInput } from \"../core/accountAddress\";\nimport { HexInput, SigningScheme } from \"../types\";\nimport { AccountAuthenticatorMultiKey } from \"../transactions/authenticator/account\";\nimport { AnyRawTransaction } from \"../transactions/types\";\nimport { AbstractKeylessAccount, KeylessSigner } from \"./AbstractKeylessAccount\";\nimport { AptosConfig } from \"../api/aptosConfig\";\n\n/**\n * Arguments required to verify a multi-key signature against a given message.\n *\n * @param message - The original message that was signed.\n * @param signature - The multi-key signature to be verified.\n */\nexport interface VerifyMultiKeySignatureArgs {\n message: HexInput;\n signature: MultiKeySignature;\n}\n\n/**\n * Signer implementation for the MultiKey authentication scheme.\n *\n * This account utilizes an M of N signing scheme, where M and N are specified in the {@link MultiKey}.\n * It signs messages using an array of M accounts, each corresponding to a public key in the {@link MultiKey}.\n *\n * Note: Generating a signer instance does not create the account on-chain.\n */\nexport class MultiKeyAccount implements Account, KeylessSigner {\n /**\n * Public key associated with the account\n */\n readonly publicKey: MultiKey;\n\n /**\n * Account address associated with the account\n */\n readonly accountAddress: AccountAddress;\n\n /**\n * Signing scheme used to sign transactions\n */\n readonly signingScheme: SigningScheme;\n\n /**\n * The signers used to sign messages. These signers should correspond to public keys in the\n * MultiKeyAccount's public key. The number of signers should be equal or greater\n * than this.publicKey.signaturesRequired\n */\n readonly signers: Account[];\n\n /**\n * An array of indices where for signer[i], signerIndicies[i] is the index of the corresponding public key in\n * publicKey.publicKeys. Used to derive the right public key to use for verification.\n */\n // TODO: Rename Indicies to Indices\n readonly signerIndicies: number[];\n\n readonly signaturesBitmap: Uint8Array;\n\n /**\n * Constructs a MultiKeyAccount instance, which requires multiple signatures for transactions.\n *\n * @param args - The arguments for creating a MultiKeyAccount.\n * @param args.multiKey - The multikey of the account consisting of N public keys and a number M representing the required signatures.\n * @param args.signers - An array of M signers that will be used to sign the transaction.\n * @param args.address - An optional account address input. If not provided, the derived address from the public key will be used.\n */\n constructor(args: { multiKey: MultiKey; signers: Account[]; address?: AccountAddressInput }) {\n const { multiKey, signers, address } = args;\n\n this.publicKey = multiKey;\n this.signingScheme = SigningScheme.MultiKey;\n\n this.accountAddress = address ? AccountAddress.from(address) : this.publicKey.authKey().derivedAddress();\n\n // Get the index of each respective signer in the bitmap\n const bitPositions: number[] = [];\n for (const signer of signers) {\n bitPositions.push(this.publicKey.getIndex(signer.publicKey));\n }\n // Zip signers and bit positions and sort signers by bit positions in order\n // to ensure the signature is signed in ascending order according to the bitmap.\n // Authentication on chain will fail otherwise.\n const signersAndBitPosition: [Account, number][] = signers.map((signer, index) => [signer, bitPositions[index]]);\n signersAndBitPosition.sort((a, b) => a[1] - b[1]);\n this.signers = signersAndBitPosition.map((value) => value[0]);\n this.signerIndicies = signersAndBitPosition.map((value) => value[1]);\n this.signaturesBitmap = this.publicKey.createBitmap({ bits: bitPositions });\n }\n\n /**\n * Static constructor to create a MultiKeyAccount using the provided public keys and signers.\n *\n * @param args - The arguments for creating a MultiKeyAccount.\n * @param args.publicKeys - The N public keys of the MultiKeyAccount.\n * @param args.signaturesRequired - The number of signatures required to authorize a transaction.\n * @param args.signers - An array of M signers that will be used to sign the transaction.\n * @returns MultiKeyAccount - The newly created MultiKeyAccount.\n */\n static fromPublicKeysAndSigners(args: {\n publicKeys: PublicKey[];\n signaturesRequired: number;\n signers: Account[];\n }): MultiKeyAccount {\n const { publicKeys, signaturesRequired, signers } = args;\n const multiKey = new MultiKey({ publicKeys, signaturesRequired });\n return new MultiKeyAccount({ multiKey, signers });\n }\n\n /**\n * Determines if the provided account is a multi-key account.\n *\n * @param account - The account to check.\n * @returns A boolean indicating whether the account is a multi-key account.\n */\n static isMultiKeySigner(account: Account): account is MultiKeyAccount {\n return account instanceof MultiKeyAccount;\n }\n\n /**\n * Sign a message using the account's signers and return an AccountAuthenticator containing the signature along with the\n * account's public key.\n * @param message - The signing message, represented as binary input in hexadecimal format.\n * @returns An instance of AccountAuthenticatorMultiKey that includes the signature and the public key.\n */\n signWithAuthenticator(message: HexInput): AccountAuthenticatorMultiKey {\n return new AccountAuthenticatorMultiKey(this.publicKey, this.sign(message));\n }\n\n /**\n * Sign a transaction using the account's signers, returning an AccountAuthenticator that contains the signature and the\n * account's public key.\n * @param transaction - The raw transaction to be signed.\n * @returns An AccountAuthenticatorMultiKey containing the signature of the transaction along with the account's public key.\n */\n signTransactionWithAuthenticator(transaction: AnyRawTransaction): AccountAuthenticatorMultiKey {\n return new AccountAuthenticatorMultiKey(this.publicKey, this.signTransaction(transaction));\n }\n\n /**\n * Waits for any proofs on KeylessAccount signers to be fetched. This ensures that signing with the KeylessAccount does not\n * fail due to missing proofs.\n * @return {Promise<void>} A promise that resolves when all proofs have been fetched.\n */\n async waitForProofFetch(): Promise<void> {\n const keylessSigners = this.signers.filter(\n (signer) => signer instanceof AbstractKeylessAccount,\n ) as AbstractKeylessAccount[];\n const promises = keylessSigners.map(async (signer) => signer.waitForProofFetch());\n await Promise.all(promises);\n }\n\n /**\n * Validates that the Keyless Account can be used to sign transactions.\n * @return\n */\n async checkKeylessAccountValidity(aptosConfig: AptosConfig): Promise<void> {\n const keylessSigners = this.signers.filter(\n (signer) => signer instanceof AbstractKeylessAccount,\n ) as AbstractKeylessAccount[];\n const promises = keylessSigners.map((signer) => signer.checkKeylessAccountValidity(aptosConfig));\n await Promise.all(promises);\n }\n\n /**\n * Sign the given message using the MultiKeyAccount's signers\n * @param message in HexInput format\n * @returns MultiKeySignature\n */\n sign(data: HexInput): MultiKeySignature {\n const signatures = [];\n for (const signer of this.signers) {\n signatures.push(signer.sign(data));\n }\n return new MultiKeySignature({ signatures, bitmap: this.signaturesBitmap });\n }\n\n /**\n * Sign the given transaction using the MultiKeyAccount's signers.\n * This function aggregates signatures from all signers associated with the MultiKeyAccount.\n *\n * @param transaction - The transaction to be signed.\n * @returns MultiKeySignature - An object containing the aggregated signatures and a bitmap of the signatures.\n */\n signTransaction(transaction: AnyRawTransaction): MultiKeySignature {\n const signatures = [];\n for (const signer of this.signers) {\n signatures.push(signer.signTransaction(transaction));\n }\n return new MultiKeySignature({ signatures, bitmap: this.signaturesBitmap });\n }\n\n /**\n * Verify the given message and signature with the public keys.\n *\n * This function checks if the provided signatures are valid for the given message using the corresponding public keys.\n *\n * @param args - The arguments for verifying the signature.\n * @param args.message - The raw message data in HexInput format.\n * @param args.signature - The signed message MultiKeySignature containing multiple signatures.\n * @returns A boolean indicating whether the signatures are valid for the message.\n */\n verifySignature(args: VerifyMultiKeySignatureArgs): boolean {\n const { message, signature } = args;\n const isSignerIndicesSorted = this.signerIndicies.every(\n (value, i) => i === 0 || value >= this.signerIndicies[i - 1],\n );\n if (!isSignerIndicesSorted) {\n return false;\n }\n for (let i = 0; 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