Account

Reference of interfaces, presets, and utilities related to account contracts.

Core

ISRC6 

use openzeppelin::account::interface::ISRC6;

Interface of the SRC6 Standard Account as defined in the SNIP-6.

SRC5 ID

0x2ceccef7f994940b3962a6c67e0ba4fcd37df7d131417c604f91e03caecc1cd

Functions

Functions

__execute__(calls: Array<Call>) → Array<Span<felt252>> external

Executes the list of calls as a transaction after validation.

Returns an array with each call’s output.

The Call struct is defined in corelib.

__validate__(calls: Array<Call>) → felt252 external

Validates a transaction before execution.

Returns the short string 'VALID' if valid, otherwise it reverts.

is_valid_signature(hash: felt252, signature: Array<felt252>) → felt252 external

Validates whether a signature is valid or not for the given message hash.

Returns the short string 'VALID' if valid, otherwise it reverts.

AccountComponent 

use openzeppelin::account::AccountComponent;

Account component implementing ISRC6 for signatures over the Starknet curve.

Implementing SRC5Component is a requirement for this component to be implemented.
Internal Implementations
InternalImpl
Events

Embeddable functions

__execute__(self: @ContractState, calls: Array<Call>) → Array<Span<felt252>> external

See ISRC6::__execute__.

__validate__(self: @ContractState, calls: Array<Call>) → felt252 external

See ISRC6::__validate__.

is_valid_signature(self: @ContractState, hash: felt252, signature: Array<felt252>) → felt252 external

See ISRC6::is_valid_signature.

__validate_declare__(self: @ContractState, class_hash: felt252) → felt252 external

Validates a Declare transaction.

Returns the short string 'VALID' if valid, otherwise it reverts.

__validate_deploy__(self: @ContractState, class_hash: felt252, contract_address_salt: felt252, public_key: felt252) → felt252 external

Validates a DeployAccount transaction. See Counterfactual Deployments.

Returns the short string 'VALID' if valid, otherwise it reverts.

get_public_key(self: @ContractState) → felt252 external

Returns the current public key of the account.

set_public_key(ref self: ContractState, new_public_key: felt252, signature: Span<felt252>) external

Sets a new public key for the account. Only accessible by the account calling itself through __execute__.

Requirements:

  • The caller must be the contract itself.

  • The signature must be valid for the new owner.

Emits both an OwnerRemoved and an OwnerAdded event.

The message to be signed is computed in Cairo as follows:

let message_hash = PoseidonTrait::new()
        .update_with('StarkNet Message')
        .update_with('accept_ownership')
        .update_with(get_contract_address())
        .update_with(current_owner)
        .finalize();

isValidSignature(self: @ContractState, hash: felt252, signature: Array<felt252>) → felt252 external

See ISRC6::is_valid_signature.

getPublicKey(self: @ContractState) → felt252 external

See get_public_key.

setPublicKey(ref self: ContractState, newPublicKey: felt252, signature: Span<felt252>) external

See set_public_key.

Internal functions

initializer(ref self: ComponentState, public_key: felt252) internal

Initializes the account with the given public key, and registers the ISRC6 interface ID.

Emits an OwnerAdded event.

assert_only_self(self: @ComponentState) internal

Validates that the caller is the account itself. Otherwise it reverts.

assert_valid_new_owner(self: @ComponentState, current_owner: felt252, new_owner: felt252, signature: Span<felt252>) internal

Validates that new_owner accepted the ownership of the contract through a signature.

Requirements:

  • signature must be valid for the new owner.

This function assumes that current_owner is the current owner of the contract, and does not validate this assumption.

validate_transaction(self: @ComponentState) → felt252 internal

Validates a transaction signature from the global context.

Returns the short string 'VALID' if valid, otherwise it reverts.

_set_public_key(ref self: ComponentState, new_public_key: felt252) internal

Set the public key without validating the caller.

Emits an OwnerAdded event.

The usage of this method outside the set_public_key function is discouraged.

_is_valid_signature(self: @ComponentState, hash: felt252, signature: Span<felt252>) → bool internal

Validates the provided signature for the hash, using the account’s current public key.

Events

OwnerAdded(new_owner_guid: felt252) event

Emitted when a public_key is added.

OwnerRemoved(removed_owner_guid: felt252) event

Emitted when a public_key is removed.

EthAccountComponent 

use openzeppelin::account::eth_account::EthAccountComponent;

Account component implementing ISRC6 for signatures over the Secp256k1 curve.

Implementing SRC5Component is a requirement for this component to be implemented.
The EthPublicKey type is an alias for starknet::secp256k1::Secp256k1Point.
Internal Implementations
InternalImpl
Events

Embeddable functions

__execute__(self: @ContractState, calls: Array<Call>) → Array<Span<felt252>> external

See ISRC6::__execute__.

__validate__(self: @ContractState, calls: Array<Call>) → felt252 external

See ISRC6::__validate__.

is_valid_signature(self: @ContractState, hash: felt252, signature: Array<felt252>) → felt252 external

See ISRC6::is_valid_signature.

__validate_declare__(self: @ContractState, class_hash: felt252) → felt252 external

Validates a Declare transaction.

Returns the short string 'VALID' if valid, otherwise it reverts.

__validate_deploy__(self: @ContractState, class_hash: felt252, contract_address_salt: felt252, public_key: EthPublicKey) → felt252 external

Validates a DeployAccount transaction. See Counterfactual Deployments.

Returns the short string 'VALID' if valid, otherwise it reverts.

get_public_key(self: @ContractState) → EthPublicKey external

Returns the current public key of the account.

set_public_key(ref self: ContractState, new_public_key: EthPublicKey, signature: Span<felt252>) external

Sets a new public key for the account. Only accessible by the account calling itself through __execute__.

Requirements:

  • The caller must be the contract itself.

  • The signature must be valid for the new owner.

Emits both an OwnerRemoved and an OwnerAdded event.

The message to be signed is computed in Cairo as follows:

let message_hash = PoseidonTrait::new()
        .update_with('StarkNet Message')
        .update_with('accept_ownership')
        .update_with(get_contract_address())
        .update_with(current_owner.get_coordinates().unwrap_syscall())
        .finalize();

isValidSignature(self: @ContractState, hash: felt252, signature: Array<felt252>) → felt252 external

See ISRC6::is_valid_signature.

getPublicKey(self: @ContractState) → EthPublicKey external

See get_public_key.

setPublicKey(ref self: ContractState, newPublicKey: EthPublicKey, signature: Span<felt252>) external

See set_public_key.

Internal functions

initializer(ref self: ComponentState, public_key: EthPublicKey) internal

Initializes the account with the given public key, and registers the ISRC6 interface ID.

Emits an OwnerAdded event.

assert_only_self(self: @ComponentState) internal

Validates that the caller is the account itself. Otherwise it reverts.

assert_valid_new_owner(self: @ComponentState, current_owner: EthPublicKey, new_owner: EthPublicKey, signature: Span<felt252>) internal

Validates that new_owner accepted the ownership of the contract through a signature.

Requirements:

  • The signature must be valid for the new_owner.

This function assumes that current_owner is the current owner of the contract, and does not validate this assumption.

validate_transaction(self: @ComponentState) → felt252 internal

Validates a transaction signature from the global context.

Returns the short string 'VALID' if valid, otherwise it reverts.

_set_public_key(ref self: ComponentState, new_public_key: EthPublicKey) internal

Set the public key without validating the caller.

Emits an OwnerAdded event.

The usage of this method outside the set_public_key function is discouraged.

_is_valid_signature(self: @ComponentState, hash: felt252, signature: Span<felt252>) → bool internal

Validates the provided signature for the hash, using the account’s current public key.

Events

The guid is computed as the hash of the public key, using the poseidon hash function.

OwnerAdded(new_owner_guid: felt252) event

Emitted when a public_key is added.

OwnerRemoved(removed_owner_guid: felt252) event

Emitted when a public_key is removed.

Presets

AccountUpgradeable 

use openzeppelin::presets::AccountUpgradeable;

Upgradeable account contract leveraging AccountComponent.

Sierra class hash

0x04343194a4a6082192502e132d9e7834b5d9bfc7a0c1dd990e95b66f85a66d46

Constructor
Embedded Implementations
AccountComponent
External Functions

Constructor

constructor(ref self: ContractState, public_key: felt252) constructor

Sets the account public_key and registers the interfaces the contract supports.

External functions

upgrade(ref self: ContractState, new_class_hash: ClassHash) external

Upgrades the contract to a new implementation given by new_class_hash.

Requirements:

  • The caller is the account contract itself.

  • new_class_hash cannot be zero.

EthAccountUpgradeable 

use openzeppelin::presets::EthAccountUpgradeable;

Upgradeable account contract leveraging EthAccountComponent.

The EthPublicKey type is an alias for starknet::secp256k1::Secp256k1Point.
Sierra class hash

0x02203673e728fa07de1c2ea60405399ffefaf875f1b7ae54e747659e1e216d94

Constructor
Embedded Implementations
EthAccountComponent
External Functions

Constructor

constructor(ref self: ContractState, public_key: EthPublicKey) constructor

Sets the account public_key and registers the interfaces the contract supports.

External functions

upgrade(ref self: ContractState, new_class_hash: ClassHash) external

Upgrades the contract to a new implementation given by new_class_hash.

Requirements:

  • The caller is the account contract itself.

  • new_class_hash cannot be zero.

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