caver.klay.accounts
caver-js APIs related to managing accounts.
caver.klay.accounts contains functions to generate Klaytn accounts and sign transactions and data.

create

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caver.klay.accounts.create([entropy])
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Generates an account object with private key and public key.
Parameters
Name
Type
Description
entropy
String
(optional) A random string to increase entropy. If none is given, a random string will be generated using randomHex.
Return Value
Object - The account object with the following structure:
Name
Type
Description
address
String
The account address.
privateKey
String
The accounts private key. This should never be shared or stored unencrypted in local storage! Also make sure to null the memory after usage.
signTransaction(tx [, callback])
Function
The function to sign transactions. See caver.klay.accounts.signTransaction.
sign(data)
Function
The function to sign transactions. See caver.klay.accounts.sign.
encrypt
Function
The function to encrypt private key with given password.
Example
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> caver.klay.accounts.create();
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{
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address: '0x79FF91738661760AC67b3E951c0B4f1F70F80478',
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privateKey: '0x{private key}',
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signTransaction: [Function: signTransaction],
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sign: [Function: sign],
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encrypt: [Function: encrypt],
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getKlaytnWalletKey: [Function: getKlaytnWalletKey]
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}
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> caver.klay.accounts.create('entropy');
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{
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address: '0x205fffB1025F4af604fEB1d3a22b46C0D2326585',
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privateKey: '0x{private key}',
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signTransaction: [Function: signTransaction],
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sign: [Function: sign],
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encrypt: [Function: encrypt],
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getKlaytnWalletKey: [Function: getKlaytnWalletKey]
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}
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> caver.klay.accounts.create(caver.utils.randomHex(32));
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{
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address: '0x62Ca8964610A9D447E1a64753a09fC8b3D40b405',
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privateKey: '0x{private key}',
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signTransaction: [Function: signTransaction],
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sign: [Function: sign],
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encrypt: [Function: encrypt],
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getKlaytnWalletKey: [Function: getKlaytnWalletKey]
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}
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createWithAccountKey

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caver.klay.accounts.createWithAccountKey(address, accountKey)
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Creates an instance of Account with the given AccountKey. Account is for managing an account's address and AccountKey.
NOTE This is merely a data structure used in caver-js. This method does not create or update an account in the Klaytn network. NOTE caver.klay.accounts.createWithAccountKey is supported since caver-js v1.2.0.
Parameters
Name
Type
Description
address
String
Address of an Account.
accountKey
String | Array | Object
An AccountKey instance (AccountKeyPublic, AccountKeyMultiSig or AccountKeyRoleBased) or a data structure that contains the key info (a private key string, an array of private key strings or an object that defines the key for each role).
Return Value
Object - An Account instance is returned, with the following properties:
Name
Type
Description
address
String
The address of the account.
privateKey
String
Default key string of accountKey that the account has. This property is left for backward compatibility. privateKey only represents the default key of accountKey, so using privateKey to sign or send a transaction is not recommended. It is recommended to use transactionKey, updateKey, or feePayerKey in context.
accountKeyType
String
Type of accountKey the account has. This can be AccountKeyPublic, AccountKeyMultiSig, or AccountKeyRoleBased
accountKey
Object
The key of the account. This is AccountKeyPublic, AccountKeyMultiSig or AccountKeyRoleBased.
keys
String | Array | Object
All keys inside accountKey that the Account has. For AccountKeyPublic, this is a single private key string; for AccountKeyMultiSig, this returns an array containing all the private key strings. In the case of AccountKeyRoleBased, an object with keys associated with each role is returned.
transactionKey
String | Array
Key used for the RoleTransaction. AccountKeyPublic or AccountKeyMultiSig are not bound to any roles, so transactionKey holds the same value as keys.
updateKey
String | Array
Key used for the RoleAccountUpdate. AccountKeyPublic or AccountKeyMultiSig are not bound to any roles, so updateKey holds the same value as keys.
feePayerKey
String | Array
Key used for RoleFeePayer. AccountKeyPublic or AccountKeyMultiSig are not bound to any roles, so feePayerKey holds the same value as keys.
signTransaction(tx [, callback])
Function
The function to sign transactions. See caver.klay.accounts.signTransaction.
sign(data)
Function
The function to sign transactions. See caver.klay.accounts.sign.
encrypt
Function
The function to encrypt an Account with given password.
getKlaytnWalletKey
Function
The function to get Klaytn Wallet Key.
Example
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// Create an Account with AccountKeyPublic
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> caver.klay.accounts.createWithAccountKey('0x62ca8964610a9d447e1a64753a09fc8b3d40b405', '0x{private key}')
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Account {
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address: [Getter/Setter],
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accountKey: [Getter/Setter],
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privateKey: [Getter/Setter],
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signTransaction: [Function: signTransaction],
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sign: [Function: sign],
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encrypt: [Function: encrypt],
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getKlaytnWalletKey: [Function: getKlaytnWalletKey]
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}
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// Create an Account with AccountKeyMultiSig
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> caver.klay.accounts.createWithAccountKey('0x62ca8964610a9d447e1a64753a09fc8b3d40b405', ['0x{private key}', '0x{private key}'])
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Account {
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address: [Getter/Setter],
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accountKey: [Getter/Setter],
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privateKey: [Getter/Setter],
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signTransaction: [Function: signTransaction],
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sign: [Function: sign],
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encrypt: [Function: encrypt],
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getKlaytnWalletKey: [Function: getKlaytnWalletKey]
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}
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// Create an Account with AccountKeyRoleBased
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> caver.klay.accounts.createWithAccountKey('0x62ca8964610a9d447e1a64753a09fc8b3d40b405', {
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transactionKey: ['0x{private key}', '0x{private key}'], '0x{private key}',
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updateKey: ['0x{private key}', '0x{private key}', '0x{private key}'],
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feePayerKey: ['0x{private key}', '0x{private key}', '0x{private key}']
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})
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Account {
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address: [Getter/Setter],
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accountKey: [Getter/Setter],
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privateKey: [Getter/Setter],
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signTransaction: [Function: signTransaction],
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sign: [Function: sign],
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encrypt: [Function: encrypt],
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getKlaytnWalletKey: [Function: getKlaytnWalletKey]
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}
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createWithAccountKeyPublic

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caver.klay.accounts.createWithAccountKeyPublic(address, accountKey)
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Creates an instance of Account with AccountKeyPublic.
NOTE caver.klay.accounts.createWithAccountKeyPublic is supported since caver-js v1.2.0.
Parameters
Name
Type
Description
address
String
Address of an Account.
accountKey
String | Object
An AccountKeyPublic instance or a private key string.
Return Value
Object - An Account instance, see caver.klay.accounts.createWithAccountKey.
Example
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> caver.klay.accounts.createWithAccountKeyPublic('0x62ca8964610a9d447e1a64753a09fc8b3d40b405', '0x{private key}')
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Account {
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address: [Getter/Setter],
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accountKey: [Getter/Setter],
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privateKey: [Getter/Setter],
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signTransaction: [Function: signTransaction],
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sign: [Function: sign],
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encrypt: [Function: encrypt],
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getKlaytnWalletKey: [Function: getKlaytnWalletKey]
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}
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createWithAccountKeyMultiSig

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caver.klay.accounts.createWithAccountKeyMultiSig(address, accountKey)
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Creates an instance of Account with AccountKeyMultiSig.
NOTE caver.klay.accounts.createWithAccountKeyMultiSig is supported since caver-js v1.2.0.
Parameters
Name
Type
Description
address
String
Address of an Account.
accountKey
String | Object
An AccountKeyMultiSig instance or an array of private key strings.
Return Value
Object - An Account instance, see caver.klay.accounts.createWithAccountKey.
Example
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> caver.klay.accounts.createWithAccountKeyMultiSig('0x62ca8964610a9d447e1a64753a09fc8b3d40b405', ['0x{private key}', '0x{private key}'])
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Account {
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address: [Getter/Setter],
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accountKey: [Getter/Setter],
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privateKey: [Getter/Setter],
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signTransaction: [Function: signTransaction],
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sign: [Function: sign],
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encrypt: [Function: encrypt],
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getKlaytnWalletKey: [Function: getKlaytnWalletKey]
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}
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createWithAccountKeyRoleBased

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caver.klay.accounts.createWithAccountKeyRoleBased(address, accountKey)
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Creates an instance of Account with AccountKeyRoleBased.
NOTE caver.klay.accounts.createWithAccountKeyRoleBased is supported since caver-js v1.2.0.
Parameters
Name
Type
Description
address
String
Address of an Account.
accountKey
String | Object
An AccountKeyRoleBased instance or an object that defines the key for each role.
Return Value
Object - An Account instance, see caver.klay.accounts.createWithAccountKey.
Example
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> caver.klay.accounts.createWithAccountKeyRoleBased('0x62ca8964610a9d447e1a64753a09fc8b3d40b405', {
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transactionKey: ['0x{private key}', '0x{private key}', '0x{private key}'],
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updateKey: ['0x{private key}', '0x{private key}', '0x{private key}'],
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feePayerKey: ['0x{private key}', '0x{private key}', '0x{private key}']
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})
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Account {
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address: [Getter/Setter],
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accountKey: [Getter/Setter],
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privateKey: [Getter/Setter],
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signTransaction: [Function: signTransaction],
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sign: [Function: sign],
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encrypt: [Function: encrypt],
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getKlaytnWalletKey: [Function: getKlaytnWalletKey]
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}
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createAccountKey

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caver.klay.accounts.createAccountKey(key)
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Creates an instance of AccountKeyPublic, AccountKeyMultiSig, or AccountKeyRoleBased depending on the type of parameter.
AccountKey is a data structure for managing keys in caver-js. Use AccountKeyPublic if you want to use a single private key, AccountKeyMultiSig if you want to use multiple private keys, or AccountKeyRoleBased if you want to use a different key for each role.
NOTE caver.klay.accounts.createAccountKey is supported since caver-js v1.2.0.
Parameters
Name
Type
Description
key
String | Array | Object
Key for generating AccountKey. If key is a single private key string, an AccountKeyPublic instance is created. If key is an array containing multiple private key strings, an AccountKeyMultiSig instance is created. If key is an object defining a key (a private key string or an array of private key strings) for each role, an AccountKeyRoleBased instance is created. AccountKeyRoleBased instance can have AccountKeyPublic or AccountKeyMultiSig for each role.
Return Value
Object - An AccountKeyPublic, AccountKeyMultiSig or AccountKeyRoleBased instance is returned with the following properties:
Name
Type
Description
type
String
The type of AccountKey instance.
defaultKey
String
Default private key of AccountKey. The default private key represents a single private key string defined for AccountKeyPublic, and a private key string in the zeroth index of the array if AccountKeyMultiSig. For AccountKeyRoleBased, it represents the defaultKey of the first found AccountKey, where the AccountKey is searched in the following order: transactionkey, updateKey, feePayerKey.
keys
String | Array | Object
All private keys defined inside the AccountKey instance. For AccountKeyPublic, this is a single private key string; for AccountKeyMultiSig, this returns an array containing all the private key strings. In the case of AccountKeyRoleBased, an object with keys associated with each role is returned.
transactionKey
String | Array
Key used for the RoleTransaction. AccountKeyPublic or AccountKeyMultiSig are not bound to any roles, so transactionKey holds the same value as keys.
updateKey
String | Array
Key used for the RoleAccountUpdate. AccountKeyPublic or AccountKeyMultiSig are not bound to any roles, so updateKey holds the same value as keys.
feePayerKey
String | Array
Key used for RoleFeePayer. AccountKeyPublic or AccountKeyMultiSig are not bound to any roles, so feePayerKey holds the same value as keys.
Example
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// Create an AccountKeyPublic
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> caver.klay.accounts.createAccountKey('0x{private key}')
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AccountKeyPublic {
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_key: '0x{private key}'
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}
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// Create an AccountKeyMultiSig
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> caver.klay.accounts.createAccountKey(['0x{private key}', '0x{private key}'])
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AccountKeyMultiSig {
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_keys: [
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'0x{private key}',
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'0x{private key}'
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]
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}
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// Create an AccountKeyRoleBased
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> caver.klay.accounts.createAccountKey({
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transactionKey: '0x{private key}',
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updateKey: ['0x{private key}', '0x{private key}'],
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feePayerKey: '0x{private key}'
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})
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AccountKeyRoleBased {
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_transactionKey:
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AccountKeyPublic {
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_key: '0x{private key}'
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},
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_updateKey:
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AccountKeyMultiSig {
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_keys: [
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'0x{private key}',
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'0x{private key}'
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]
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},
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_feePayerKey:
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AccountKeyPublic {
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_key: '0x{private key}'
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}
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}
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createAccountKeyPublic

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caver.klay.accounts.createAccountKeyPublic(key)
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Creates an instance of AccountKeyPublic with the given private key string.
NOTE caver.klay.accounts.createAccountKeyPublic is supported since caver-js v1.2.0.
Parameters
Name
Type
Description
key
String
A string of private key for generating AccountKeyPublic.
Return Value
Object - An AccountKeyPublic instance, see caver.klay.accounts.createAccountKey.
Example
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> caver.klay.accounts.createAccountKeyPublic('0x{private key}')
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AccountKeyPublic {
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_key: '0x{private key}'
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}
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createAccountKeyMultiSig

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caver.klay.accounts.createAccountKeyMultiSig(keys)
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Creates an instance of AccountKeyMultiSig with the given multiple private keys.
NOTE caver.klay.accounts.createAccountKeyMultiSig is supported since caver-js v1.2.0.
Parameters
Name
Type
Description
keys
Array
An array of private key strings for generating AccountKeyMultiSig.
Return Value
Object - An AccountKeyMultiSig instance, see caver.klay.accounts.createAccountKey.
Example
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> caver.klay.accounts.createAccountKeyMultiSig(['0x{private key}', '0x{private key}'])
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AccountKeyMultiSig {
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_keys: [
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'0x{private key}',
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'0x{private key}'
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]
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}
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createAccountKeyRoleBased

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caver.klay.accounts.createAccountKeyRoleBased(keyObject)
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Creates an instance of AccountKeyRoleBased with the given keys associated with each role.
NOTE caver.klay.accounts.createAccountKeyRoleBased is supported since caver-js v1.2.0.
Parameters
Name
Type
Description
keyObject
Object
An object with role-key pairs. A key for each role can be a private key string or an array of private key strings.
Return Value
Object - An AccountKeyRoleBased instance, see caver.klay.accounts.createAccountKey.
Example
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> caver.klay.accounts.createAccountKeyRoleBased({
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transactionKey: '0x{private key}',
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updateKey: ['0x{private key}', '0x{private key}'],
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feePayerKey: '0x{private key}'
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})
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AccountKeyRoleBased {
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_transactionKey:
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AccountKeyPublic {
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_key: '0x{private key}'
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},
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_updateKey:
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AccountKeyMultiSig {
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_keys: [
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'0x{private key}',
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'0x{private key}'
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]
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},
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_feePayerKey:
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AccountKeyPublic {
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_key: '0x{private key}'
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}
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}
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accountKeyToPublicKey

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caver.klay.accounts.accountKeyToPublicKey(accountKey)
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This function converts the private key of AccountKey to public key.
NOTE caver.klay.accounts.accountKeyToPublicKey is supported since caver-js v1.2.0.
Parameters
Name
Type
Description
accountKey
String | Array | Object
An AccountKey instance (AccountKeyPublic, AccountKeyMultiSig or AccountKeyRoleBased) or a data structure that contains the key info (a private key string, an array of private key strings or an object that defines the key for each role).
Return Value
Type
Description
String | Array | Object
If the parameter is an AccountKeyPublic instance or a private key string, a public key string is returned. If the parameter is an AccountKeyMultiSig instance or an array of private key strings, an array of public-key strings is returned. If the parameter is an AccountKeyRoleBased instance or an object defining a key (a private key string or an array of private key strings) for each role, an object with role and public-key (a public-key string or an array of public-key strings) pairs is returned.
Example
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// Convert a private key string
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> caver.klay.accounts.accountKeyToPublicKey('0x{private key}')
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'0x67f20d1198abcdc036a4d8f3ea0cf837527716c90f71d0b0410dfe3e1b405eded9ea818eedd5e8ad79658b2cdf4862ab0956a6f7fd0a4886afe6110b2e9803a4'
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// Convert an array of private key strings
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> caver.klay.accounts.accountKeyToPublicKey(['0x{private key}', '0x{private key}'])
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[
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'0x67f20d1198abcdc036a4d8f3ea0cf837527716c90f71d0b0410dfe3e1b405eded9ea818eedd5e8ad79658b2cdf4862ab0956a6f7fd0a4886afe6110b2e9803a4',
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'0x7c5415f99628618b3fe78e14606c83a22488769b3361e3758c7c98a204a23b615cf07af65490895d70a7b7e7e885fc2f597d65ea69ed586c7ae7cb0241656036'
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]
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// Convert a role-based key
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> caver.klay.accounts.accountKeyToPublicKey({transactionKey: ['0x{private key}', '0x{private key}'], updateKey: '0x{private key}', feePayerKey: ['0x{private key}', '0x{private key}']})
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{
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transactionKey: [
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'0x67f20d1198abcdc036a4d8f3ea0cf837527716c90f71d0b0410dfe3e1b405eded9ea818eedd5e8ad79658b2cdf4862ab0956a6f7fd0a4886afe6110b2e9803a4',
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'0x7c5415f99628618b3fe78e14606c83a22488769b3361e3758c7c98a204a23b615cf07af65490895d70a7b7e7e885fc2f597d65ea69ed586c7ae7cb0241656036'
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],
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updateKey: '0x21aa42e0232e6c7607a0028bcbd690400b92574c44b17af8b036f3f4f01b0586f90578976a040debf6aecef4a5d00b5315b8c82e999ed8e5fbacd5fcbee82080',
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feePayerKey: [
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'0xb82bb74e902b1fa3594c7cc8bd33a727eb1c85a9bfc991327a0215fc413eafe0b3723cc7f3c6e79981b409e82b8bf7033fed2d2878c26502bea64f84d592b167',
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'0x39acd887f32ccecd1b13c890854d2dfd0016f0be477155d81a848e971ff59412b0e4c0b5bfc1fd548b971f98cd9ef19367309d0475033fda3c8028ba9df27734'
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]
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}
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privateKeyToAccount

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caver.klay.accounts.privateKeyToAccount(privateKey)
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Creates an account object from a private key.
Parameters
Name
Type
Description
privateKey
string
The private key to convert.
Return Value
Object - The account object
Example
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> caver.klay.accounts.privateKeyToAccount('0x{private key}');
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{
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address: '0x62ca8964610a9d447e1a64753a09fc8b3d40b405',
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privateKey: '0x{private key}',
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signTransaction: [Function: signTransaction],
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sign: [Function: sign],
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encrypt: [Function: encrypt],
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getKlaytnWalletKey: [Function: getKlaytnWalletKey]
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}
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privateKeyToPublicKey

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caver.klay.accounts.privateKeyToPublicKey(privateKey)
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Gets public key from a given private key
Parameters
Name
Type
Description
privateKey
string
The private key to convert.
Return Value
String - The public key (64 bytes)
Example
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> caver.klay.accounts.privateKeyToPublicKey('0x{private key}')
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'0xbb1846722a4c27e71196e1a44611ee7174276a6c51c4830fb810cac64b0725f217cb8783625a809d1303adeeec2cf036ab74098a77a6b7f1003486e173b29aa7'
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createAccountForUpdate

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caver.klay.accounts.createAccountForUpdate(address, accountKey, options)
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Creates an instance of AccountForUpdate. AccountForUpdate contains the address of the account and the new public key to update.
AccountForUpdate can be used in the account update transaction object (ACCOUNT_UPDATE, FEE_DELEGATED_ACCOUNT_UPDATE, or FEE_DELEGATED_ACCOUNT_UPDATE_WITH_RATIO) as a key. If you want to know how to use AccountForUpdate in the transaction, see Account update with AccountForUpdate.
The accountKey parameter of caver.klay.accounts.createAccountForUpdate must be a private key.
You can create an AccountForUpdate instance using the public key with caver.klay.accounts.createAccountForUpdateWithPublicKey.
You can also use caver.klay.accounts.createAccountForUpdateWithLegacyKey to create an AccountForUpdate instance for updating to AccountKeyLegacy, and caver.klay.accounts.createAccountForUpdateWithFailKey to create an AccountForUpdate instance for updating to AccountKeyFail.
NOTE caver.klay.accounts.createAccountForUpdate is supported since caver-js v1.2.0.
Parameters
Name
Type
Description
address
String
Address of an Account.
accountKey
String | Array | Object
AccountKey instance (AccountKeyPublic, AccountKeyMultiSig or AccountKeyRoleBased) or the equivalent key info (a private key string, an array of private key strings or an object defining key(s) with role(s)). If accountKey is not an AccountKey instance, this method internally calls caver.klay.accounts.createAccountKey to create an AccountKey instance from the given key info.
options
Object
An optional object containing the threshold and weight. This is required when using AccountKeyMultiSig. The usage is shown in the example below.
Return Value
Object - An AccountForUpdate instance is returned, with the following properties:
Name
Type
Description
address
String
Address of the account to be updated.
keyForUpdate
Object
An object containing the new public key derived from the given accountKey.
Example
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// Create AccountForUpdate for AccountKeyPublic
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> caver.klay.accounts.createAccountForUpdate('0x5B4EF8e2417DdE1b9B80BcfC35d1bfeF3D7234ef', '0x{private key}')
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AccountForUpdate {
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address: '0x5B4EF8e2417DdE1b9B80BcfC35d1bfeF3D7234ef',
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keyForUpdate: {
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publicKey: '0x24c32ee4f908ceed89e7501de2980fcb1d2add69080d3921f86c49de863eb2d507e24d9aaf91328b7f7cef2a94b538cb33b3f8cdd64925855ce0a4bf6e11f3db'
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}
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}
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// Create AccountForUpdate for AccountKeyMultiSig with an options object
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> caver.klay.accounts.createAccountForUpdate('0x5B4EF8e2417DdE1b9B80BcfC35d1bfeF3D7234ef', ['0x{private key}', '0x{private key}'], { threshold: 2, weight: [1,1] })
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AccountForUpdate {
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address: '0x5B4EF8e2417DdE1b9B80BcfC35d1bfeF3D7234ef',
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keyForUpdate: {
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multisig: {
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threshold: 2,
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keys: [
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{
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weight: 1,
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publicKey: '0xc89f551ce9c569cf978f4f64833e447f177a83eda4f1883d770360ab35002dbdeb2d502cd33217238add013ea1c4ff5055ceda46473569824e336d0d64e9eeb2'
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},
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{
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weight: 1,
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publicKey: '0xab0837fa3d61cf33dc4f3af4aca692d8c939566e1abbca0036fa3b29cd55b38a387f73baf59510d96680062bd129dd2bb8dcbb5ea5ed16c881f83a3251f73600'
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}
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]
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}
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}
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}
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// Create AccountForUpdate for AccountKeyRoleBased with an options object
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> caver.klay.accounts.createAccountForUpdate('0x5B4EF8e2417DdE1b9B80BcfC35d1bfeF3D7234ef', { transactionKey: '0x{private key}', updateKey: ['0x{private key}', '0x{private key}'], feePayerKey: '0x{private key}' }, { updateKey: { threshold: 2, weight: [1,1] } })
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AccountForUpdate {
34
address: '0x5B4EF8e2417DdE1b9B80BcfC35d1bfeF3D7234ef',
35
keyForUpdate: {
36
roleTransactionKey: {
37
publicKey: '0x2b4a1d4ca1ee828f17e8c4c0ac0c0c46cf08f4b27fafc01e4b3481a4fe0891cacf315ed10b1df85bfd6797ea6c5ebafac437a7564eff355b11ad1e3d6e6c43a7'
38
},
39
roleAccountUpdateKey: {
40
multisig: {
41
threshold: 2,
42
keys: [
43
{
44
weight: 1,
45
publicKey: '0x26156615c8e503d96cd332a2fba6aab88b6156b983c89f586bcfc0443c0a7f2372d892d73c66d30f726f8269c75920a082eb2e57f6662d855389bb922ee263f3'
46
},
47
{
48
weight: 1,
49
publicKey: '0xafc139d2bcace02fa3d4b12926f976cf672f35a6ea2bc0f7e2e6d2ada0dd28f672acb8dcaedc694d6134a2f6c4aae472c9d67d30f760e16e742e01758c4daf83'
50
}
51
]
52
}
53
},
54
roleFeePayerKey: {
55
publicKey: '0xe55d39e147a0d5542d4bb965aeaa01e918c81a332ce47e0d3173179fe5b68c8c9264bec516d50bea0a7da7c3d8f98e124761a9b27434221d138ff8e22d932a0a'
56
}
57
}
58
}
59
60
// Create AccountForUpdate for AccountKeyRoleBased with legacy key or fail key
61
// When updating the key used for a specific role in AccountKeyRoleBased to AccountKeyLegacy or AccountKeyFailKey, define the role to update as follows.
62
> caver.klay.accounts.createAccountForUpdate('0x5B4EF8e2417DdE1b9B80BcfC35d1bfeF3D7234ef', { transactionKey: 'legacyKey', updateKey: 'failKey' })
63
AccountForUpdate {
64
address: '0x5B4EF8e2417DdE1b9B80BcfC35d1bfeF3D7234ef',
65
keyForUpdate: {
66
roleTransactionKey: { legacyKey: true },
67
roleAccountUpdateKey: { failKey: true }
68
}
69
}