caver.wallet
caver.wallet
is a package that manages Keyring instances in in-memory wallet. caver.wallet
accepts all SingleKeyring, MultipleKeyring, and RoleBasedKeyring, and manages them by address.
Class
KeyringContainer
caver.wallet
KeyringContainer
is a class that manages SingleKeyring, MultipleKeyring, and RoleBasedKeyring instances. When Caver is instantiated, it creates a KeyringContainer instance in the caver.wallet
. You can store and manage keyring instances in the in-memory wallet through caver.wallet
.
properties
Name | Type | Description |
---|---|---|
length | number | The number of keyrings in keyringContainer. |
caver.wallet.generate
caver.wallet.generate(numberOfKeyrings [, entropy])
Generates instances of SingleKeyring in the keyringContainer with randomly generated private keys.
Parameters
Name | Type | Description |
---|---|---|
numberOfKeyrings | number | The number of SingleKeyring instances to create. |
entropy | string | (optional) A random string to increase entropy. |
Return Value
Type | Description |
---|---|
Array | An array containing the addresses of the generated. |
Example
// generate without entropy> caver.wallet.generate(3)[ '0xb4b0c3781082cf818bfaf5adfc73fdf59d92c1cd', '0x9957dfd92e4b70f91131c573293343bc5f21f215', '0xed2fe179c18fa528da2392532998560bd1008511']// generate with entropy> caver.wallet.generate(3, caver.utils.randomHex(32))[ '0xb4b0c3781082cf818bfaf5adfc73fdf59d92c1cd', '0x9957dfd92e4b70f91131c573293343bc5f21f215', '0xed2fe179c18fa528da2392532998560bd1008511']
caver.wallet.newKeyring
caver.wallet.newKeyring(address, key)
Creates a keyring instance with given parameters and adds it to the caver.wallet
.
If key
is a private key string, a SingleKeyring instance that uses a single private key is created. If key
is an array containing private key strings, a MultipleKeyring instance that use multiple private keys is created. If key
is a 2D array of which each element contains the private key(s) to be used for each role, a RoleBasedKeyring instance is created. The keyring created is added to caver.wallet
.
Parameters
Name | Type | Description |
---|---|---|
address | string | The address string. |
key | string | Array | The private key string, an array of private keys, or a 2D array of which each array element contains keys defined for each role. |
Return Value
Type | Description |
---|---|
object | The keyring instance (SingleKeyring, MultipleKeyring or RoleBasedKeyring) added to caver.wallet is returned. |
Example
// Create a instance of SingleKeyring and add to caver.wallet> caver.wallet.newKeyring('0x{address in hex}', '0x{private key}')SingleKeyring { _address: '0x386a4bb40abbfaa59cecdc3ced202475895fd569', _key: PrivateKey { _privateKey: '0x{private key}' }}// Create a instance of MultipleKeyring and add to caver.wallet> caver.wallet.newKeyring('0x{address in hex}', ['0x{private key1}', '0x{private key2}'])MultipleKeyring { _address: '0x17e7531b40ad5d7b5fa7b4ec78df64ce1cb36d24', _keys: [ PrivateKey { _privateKey: '0x{private key1}' }, PrivateKey { _privateKey: '0x{private key2}' } ]}// Create a instance of RoleBasedKeyring and add to caver.wallet> const roleBasedKeys = [ ['0x{private key1}', '0x{private key2}'], ['0x{private key3}', '0x{private key4}'], ['0x{private key5}', '0x{private key6}'],]> caver.wallet.newKeyring('0x{address in hex}', roleBasedKeys)RoleBasedKeyring { _address: '0xe7e9184c125020af5d34eab7848bab799a1dcba9', _keys: [ [ PrivateKey { _privateKey: '0x{private key1}' }, PrivateKey { _privateKey: '0x{private key2}' } ], [ PrivateKey { _privateKey: '0x{private key3}' }, PrivateKey { _privateKey: '0x{private key4}' } ], [ PrivateKey { _privateKey: '0x{private key5}' }, PrivateKey { _privateKey: '0x{private key6}' } ] ]}
caver.wallet.updateKeyring
caver.wallet.updateKeyring(keyring)
Updates the keyring inside the caver.wallet
. When a new keyring
instance (SingleKeyring, MultipleKeyring or RoleBasedKeyring) is passed as a parameter, the existing keyring stored in the caver.wallet
that matches the address
property of the given keyring
instance is found and replaced with the given one. An error occurs when the matching keyring is not found.
Parameters
Name | Type | Description |
---|---|---|
keyring | object | The new keyring (SingleKeyring, MultipleKeyring or RoleBasedKeyring) to be stored in caver.wallet . |
Return Value
Type | Description |
---|---|
object | The updated keyring (SingleKeyring, MultipleKeyring or RoleBasedKeyring) stored in caver.wallet . |
Example
> caver.wallet.updateKeyring(newKeyring)SingleKeyring { _address: '0x386a4bb40abbfaa59cecdc3ced202475895fd569', _key: PrivateKey { _privateKey: '0x{private key}' }}
caver.wallet.getKeyring
caver.wallet.getKeyring(address)
Returns the keyring instance corresponding to the address in caver.wallet
.
Parameters
Name | Type | Description |
---|---|---|
address | string | The address of keyring to query. |
Return Value
Type | Description |
---|---|
object | The found keyring instance (SingleKeyring, MultipleKeyring or RoleBasedKeyring) stored in caver.wallet . |
Example
> caver.wallet.getKeyring('0x386a4bb40abbfaa59cecdc3ced202475895fd569')SingleKeyring { _address: '0x386a4bb40abbfaa59cecdc3ced202475895fd569', _key: PrivateKey { _privateKey: '0x{private key}' }}
caver.wallet.isExisted
caver.wallet.isExisted(address)
Returns true
if there is a keyring matching the address.
Parameters
Name | Type | Description |
---|---|---|
address | string | The address of keyring to check existence. |
Return Value
Type | Description |
---|---|
boolean | true means a keyring matching with the address is existed in the caver.wallet . |
Example
> caver.wallet.isExisted('0x386a4bb40abbfaa59cecdc3ced202475895fd569')true
caver.wallet.add
caver.wallet.add(keyring)
Adds an instance of keyring to the caver.wallet
. If the newly given keyring has the same address with one of the keyrings that already exist in caver.wallet
, an error is returned. In this case, use updateKeyring to update the existing keyring in caver.wallet
.
Parameters
Name | Type | Description |
---|---|---|
keyring | object | A keyring instance (SingleKeyring, MultipleKeyring or RoleBasedKeyring) to add to caver.wallet . |
Return Value
Type | Description |
---|---|
object | The added keyring (SingleKeyring, MultipleKeyring or RoleBasedKeyring) in caver.wallet . |
Example
> caver.wallet.add(keyring)SingleKeyring { _address: '0x386a4bb40abbfaa59cecdc3ced202475895fd569', _key: PrivateKey { _privateKey: '0x{private key}' }}
caver.wallet.remove
caver.wallet.remove(address)
Deletes the keyring from caver.wallet
whose address matches the address of the given keyring.
Parameters
Name | Type | Description |
---|---|---|
address | string | An address of the keyring to be deleted in caver.wallet . |
Return Value
Type | Description |
---|---|
boolean | true if keyring is removed from caver.wallet . |
Example
> caver.wallet.remove('0x6a3edfad6d1126020d5369e9097db39281876c5d')true
caver.wallet.signMessage
caver.wallet.signMessage(address, message, role [, index])
Signs the message with kaia-specific prefix using keyring stored in caver.wallet. This calculates a kaia-specific signature with:
sign(keccak256("\x19Klaytn Signed Message:\n" + len(message) + message)))
If the user has not provided the index parameter, caver.wallet.signMessage
signs message using all the private keys used by the role. If the index parameter is given, caver.wallet.signMessage
signs message using only one private key at the given index. The role used in caver-js can be found from caver.wallet.keyring.role
.
Parameters
Name | Type | Description |
---|---|---|
address | string | An address of the keyring to be used. |
message | string | The message to sign. |
role | number | A number indicating the role of the key. You can use caver.wallet.keyring.role . |
index | number | (optional) The index of the private key you want to use. The index must be less than the length of the array of the private keys defined for each role. If an index is not defined, this method will use all the private keys. |
Return Value
Type | Description |
---|---|
object | An object that includes the result of signing. |
The returned object contains the following:
Name | Type | Description |
---|---|---|
messageHash | string | The hash of message with kaia-specific prefix. |
signatures | Array | An array of SignatureData. |
message | string | The message to sign. |
Example
// Sign message with roleTransactionKey which uses two private keys> caver.wallet.signMessage('0x386a4bb40abbfaa59cecdc3ced202475895fd569', 'message to sign', caver.wallet.keyring.role.roleTransactionKey){ messageHash: '0x9c4c1ae0aa1faf7e59eaf6fcf36a34542698197b379a9949b58c92925e74c069', signatures: [ SignatureData { _v: '0x1c', _r: '0xb3239...', _s: '0x584d2...' }, SignatureData { _v: '0x1b', _r: '0x13c64...', _s: '0x60c61...' } ], message: 'message to sign'}// Sign message with roleTransactionKey and index> caver.wallet.signMessage('0x386a4bb40abbfaa59cecdc3ced202475895fd569', 'message to sign', caver.wallet.keyring.role.roleTransactionKey, 1){ messageHash: '0x9c4c1ae0aa1faf7e59eaf6fcf36a34542698197b379a9949b58c92925e74c069', signatures: [ SignatureData { _v: '0x1b', _r: '0x13c64...', _s: '0x60c61...' } ], message: 'message to sign'}
caver.wallet.sign
caver.wallet.sign(address, transaction [, index] [, hasher])
Signs the transaction as a sender
of the transaction and appends signatures
in the transaction object using the keyring in caver.wallet
.
For Account Update transaction, use roleTransactionKey, otherwise, use roleTransactionKey. If the user has not defined an index
, caver.wallet.sign
signs the transaction using all the private keys used by the role. If index
is defined, the caver.wallet.sign
signs the transaction using only one private key at the given index.
Parameters
Name | Type | Description |
---|---|---|
address | string | An address of the keyring to be used. |
transaction | object | An instance of Transaction. |
index | number | (optional) The index of the private key you want to use. The index must be less than the length of the array of the private keys defined for each role. If an index is not defined, this method will use all the private keys. |
hasher | function | (optional) A hash function to get the transaction hash. If hasher is given as a parameter, it calculates the transaction hash instead of the default method for calculating transaction hash implemented in caver-js. See Basic for details about the default method for transaction hash generation. |
Return Value
Promise
returning object
: The signed transaction.
Type | Description |
---|---|
object | A signed transaction instance. The sign(s) is added to the transaction.signatures . |
For more information about fields by transaction type, see caver.transaction.
Example
// This example uses the ValueTransfer transaction.// Please refer to [caver.transaction] for how to use various transaction types.> const transaction = caver.transaction.valueTransfer.create({ from: '0xe7e9184c125020af5d34eab7848bab799a1dcba9', to: '0x3424b91026bdc5ec55df4548e6ebf0f28b60abd7', value: 1, gas: 30000,})> const customHasher = () => { ... }// Sign a transaction with the address of RoleBasedKeyring which use two private keys for roleTransactionKey> caver.wallet.sign('0xe7e9184c125020af5d34eab7848bab799a1dcba9', transaction).then(console.log)ValueTransfer { _type: 'TxTypeValueTransfer', _from: '0xe7e9184c125020af5d34eab7848bab799a1dcba9', _gas: '0x7530', _signatures: [ SignatureData { _v: '0x4e43', _r: '0xd78a2...', _s: '0x379e9...' }, SignatureData { _v: '0x4e43', _r: '0x70a58...', _s: '0x2ab28...' } ], _to: '0x3424b91026bdc5ec55df4548e6ebf0f28b60abd7', _value: '0x1', _chainId: '0x2710', _gasPrice: '0x5d21dba00', _nonce: '0x0'}// Sign a transaction with the address of RoleBasedKeyring which use two private keys for roleTransactionKey and index> caver.wallet.sign('0xe7e9184c125020af5d34eab7848bab799a1dcba9', transaction, 1).then(console.log)ValueTransfer { _type: 'TxTypeValueTransfer', _from: '0xe7e9184c125020af5d34eab7848bab799a1dcba9', _gas: '0x7530', _signatures: [ SignatureData { _v: '0x4e43', _r: '0x70a58...', _s: '0x2ab28...' } ], _to: '0x3424b91026bdc5ec55df4548e6ebf0f28b60abd7', _value: '0x1', _chainId: '0x2710', _gasPrice: '0x5d21dba00', _nonce: '0x0'}// Sign a transaction with the address of RoleBasedKeyring which use two private keys for roleTransactionKey and hasher> caver.wallet.sign('0xe7e9184c125020af5d34eab7848bab799a1dcba9', transaction, customHasher).then(console.log)ValueTransfer { _type: 'TxTypeValueTransfer', _from: '0xe7e9184c125020af5d34eab7848bab799a1dcba9', _gas: '0x7530', _signatures: [ SignatureData { _v: '0x4e44', _r: '0x7a8b6...', _s: '0x17139...' }, SignatureData { _v: '0x4e43', _r: '0x7f978...', _s: '0x1a532...' } ], _to: '0x3424b91026bdc5ec55df4548e6ebf0f28b60abd7', _value: '0x1', _chainId: '0x2710', _gasPrice: '0x5d21dba00', _nonce: '0x0'}// Sign a transaction with the address of RoleBasedKeyring which use two private keys for roleTransactionKey, index and hasher> caver.wallet.sign('0xe7e9184c125020af5d34eab7848bab799a1dcba9', transaction, 0, customHasher).then(console.log)ValueTransfer { _type: 'TxTypeValueTransfer', _from: '0xe7e9184c125020af5d34eab7848bab799a1dcba9', _gas: '0x7530', _signatures: [ SignatureData { _v: '0x4e44', _r: '0x7a8b6...', _s: '0x17139...' } ], _to: '0x3424b91026bdc5ec55df4548e6ebf0f28b60abd7', _value: '0x1', _chainId: '0x2710', _gasPrice: '0x5d21dba00', _nonce: '0x0'}
caver.wallet.signAsFeePayer
caver.wallet.signAsFeePayer(address, transaction [, index] [, hasher])
Signs the transaction as fee payer
of the transaction and appends feePayerSignatures
in the transaction object using the keyring in caver.wallet
.
For signing a transaction as a fee payer, use roleFeePayerKey. If the user has not defined an index
, caver.wallet.signAsFeePayer
signs the transaction using all the private keys used by the role. If index
is defined, the caver.wallet.signAsFeePayer
signs the transaction using only one private key at the given index.
If the transaction.feePayer
is not defined, the address of keyring which is founded from caver.wallet
is assigned.
Parameters
Name | Type | Description |
---|---|---|
address | string | An address of the keyring to be used. |
transaction | object | An instance of FeeDelegatedTransaction. |
index | number | (optional) The index of the private key you want to use. The index must be less than the length of the array of the private keys defined for each role. If an index is not defined, this method will use all the private keys. |
hasher | function | (optional) A function to get the transaction hash. If hasher is defined as a parameter, this is used to get the transaction hash instead of a default implementation in caver-js. |
Return Value
Promise
returning object
: The signed transaction.
Type | Description |
---|---|
object | A signed transaction instance. The signing result is appended to the transaction.feePayerSignatures . |
For more information about fields by transaction type, see caver.transaction.
Example
// This example uses the FeeDelegatedValueTransfer transaction.// Please refer to [caver.transaction] for how to use various transaction types.> const transaction = caver.transaction.feeDelegatedValueTransfer.create({ from: '0x6fddbcb99d31b8755c2b840a367f53eea4b4f45c', to: '0x3424b91026bdc5ec55df4548e6ebf0f28b60abd7', value: 1, gas: 30000,})> const customHasher = () => { ... }// Sign a transaction with the address of RoleBasedKeyring which use two private keys for roleFeePayerKey> caver.wallet.signAsFeePayer('0xe7e9184c125020af5d34eab7848bab799a1dcba9', transaction).then(console.log)FeeDelegatedValueTransfer { _type: 'TxTypeFeeDelegatedValueTransfer', _from: '0x6fddbcb99d31b8755c2b840a367f53eea4b4f45c', _gas: '0x7530', _signatures: [ SignatureData { _v: '0x01', _r: '0x', _s: '0x' } ], _feePayer: '0xe7e9184c125020af5d34eab7848bab799a1dcba9', _feePayerSignatures: [ SignatureData { _v: '0x4e44', _r: '0x7010e...', _s: '0x65d6b...' }, SignatureData { _v: '0x4e43', _r: '0x96ef2...', _s: '0x77f34...' } ], _to: '0x3424b91026bdc5ec55df4548e6ebf0f28b60abd7', _value: '0x1', _chainId: '0x2710', _gasPrice: '0x5d21dba00', _nonce: '0x0'}// Sign a transaction with the address of RoleBasedKeyring which use two private keys for roleFeePayerKey, index> caver.wallet.signAsFeePayer('0xe7e9184c125020af5d34eab7848bab799a1dcba9', transaction, 0).then(console.log)FeeDelegatedValueTransfer { _type: 'TxTypeFeeDelegatedValueTransfer', _from: '0x6fddbcb99d31b8755c2b840a367f53eea4b4f45c', _gas: '0x7530', _signatures: [ SignatureData { _v: '0x01', _r: '0x', _s: '0x' } ], _feePayer: '0xe7e9184c125020af5d34eab7848bab799a1dcba9', _feePayerSignatures: [ SignatureData { _v: '0x4e44', _r: '0x7010e...', _s: '0x65d6b...' } ], _to: '0x3424b91026bdc5ec55df4548e6ebf0f28b60abd7', _value: '0x1', _chainId: '0x2710', _gasPrice: '0x5d21dba00', _nonce: '0x0'}// Sign a transaction with the address of RoleBasedKeyring which use two private keys for roleFeePayerKey and hasher> caver.wallet.signAsFeePayer('0xe7e9184c125020af5d34eab7848bab799a1dcba9', transaction, customHasher).then(console.log)FeeDelegatedValueTransfer { _type: 'TxTypeFeeDelegatedValueTransfer', _from: '0x6fddbcb99d31b8755c2b840a367f53eea4b4f45c', _gas: '0x7530', _signatures: [ SignatureData { _v: '0x01', _r: '0x', _s: '0x' } ], _feePayer: '0xe7e9184c125020af5d34eab7848bab799a1dcba9', _feePayerSignatures: [ SignatureData { _v: '0x4e43', _r: '0xe48bf...', _s: '0x1cf36...' }, SignatureData { _v: '0x4e43', _r: '0x82976...', _s: '0x3c5e0...' } ], _to: '0x3424b91026bdc5ec55df4548e6ebf0f28b60abd7', _value: '0x1', _chainId: '0x2710', _gasPrice: '0x5d21dba00', _nonce: '0x0'}// Sign a transaction with the address of RoleBasedKeyring which use two private keys for roleFeePayerKey, index and hasher> caver.wallet.signAsFeePayer('0xe7e9184c125020af5d34eab7848bab799a1dcba9', transaction, 0, customHasher).then(console.log)FeeDelegatedValueTransfer { _type: 'TxTypeFeeDelegatedValueTransfer', _from: '0x6fddbcb99d31b8755c2b840a367f53eea4b4f45c', _gas: '0x7530', _signatures: [ SignatureData { _v: '0x01', _r: '0x', _s: '0x' } ], _feePayer: '0xe7e9184c125020af5d34eab7848bab799a1dcba9', _feePayerSignatures: [ SignatureData { _v: '0x4e43', _r: '0x82976...', _s: '0x3c5e0...' } ], _to: '0x3424b91026bdc5ec55df4548e6ebf0f28b60abd7', _value: '0x1', _chainId: '0x2710', _gasPrice: '0x5d21dba00', _nonce: '0x0'}