Transfer Manager module for verifing transations with a signed message (SignedTransferManager.sol)

View Source: contracts/modules/Experimental/TransferManager/SignedTransferManager.sol

↗ Extends: TransferManager

SignedTransferManager

Contract Members

Constants & Variables

bytes32 public constant INVALID_SIG;

Events

event SignatureUsed(bytes  _data);

Functions

• (address _securityToken, address _polyAddress)

• getInitFunction()

• checkSignatureValidity(bytes _data)

• checkSigner(address _signer)

• executeTransfer(address _from, address _to, uint256 _amount, bytes _data)

• verifyTransfer(address _from, address _to, uint256 _amount, bytes _data)

• invalidateSignature(address _from, address _to, uint256 _amount, bytes _data)

• getPermissions()

• _checkSignatureIsInvalid(bytes _data)

• _checkSigner(address _signer)

• _invalidateSignature(bytes _data)

Constructor

function (address _securityToken, address _polyAddress) public nonpayable Module

Arguments

Name	Type	Description
_securityToken	address	Address of the security token
_polyAddress	address	Address of the polytoken

getInitFunction

⤾ overrides IModule.getInitFunction

This function returns the signature of configure function

function getInitFunction() external pure
returns(bytes4)

Arguments

Name	Type	Description

checkSignatureValidity

function to check if a signature is still valid

function checkSignatureValidity(bytes _data) external view
returns(bool)

Arguments

Name	Type	Description
_data	bytes	signature

checkSigner

function checkSigner(address _signer) external view
returns(bool)

Arguments

Name	Type	Description
_signer	address

executeTransfer

⤾ overrides ITransferManager.executeTransfer

allow verify transfer with signature

function executeTransfer(address _from, address _to, uint256 _amount, bytes _data) external nonpayable onlySecurityToken 
returns(enum ITransferManager.Result)

Arguments

Name	Type	Description
_from	address	address transfer from
_to	address	address transfer to
_amount	uint256	transfer amount
_data	bytes	signature

Sig needs to be valid (not used or deemed as invalid) Signer needs to be in the signers mapping |

verifyTransfer

⤾ overrides ITransferManager.verifyTransfer

allow verify transfer with signature

function verifyTransfer(address _from, address _to, uint256 _amount, bytes _data) public view
returns(enum ITransferManager.Result, bytes32)

Arguments

Name	Type	Description
_from	address	address transfer from
_to	address	address transfer to
_amount	uint256	transfer amount
_data	bytes	signature

Sig needs to be valid (not used or deemed as invalid) Signer needs to be in the signers mapping |

invalidateSignature

allow signers to deem a signature invalid

function invalidateSignature(address _from, address _to, uint256 _amount, bytes _data) external nonpayable

Arguments

Name	Type	Description
_from	address	address transfer from
_to	address	address transfer to
_amount	uint256	transfer amount
_data	bytes	signature

Sig needs to be valid (not used or deemed as invalid) Signer needs to be in the signers mapping |

getPermissions

⤾ overrides IModule.getPermissions

Return the permissions flag that are associated with ManualApproval transfer manager

function getPermissions() public view
returns(bytes32[])

Arguments

Name	Type	Description

_checkSignatureIsInvalid

function _checkSignatureIsInvalid(bytes _data) internal view
returns(bool)

Arguments

Name	Type	Description
_data	bytes

_checkSigner

function _checkSigner(address _signer) internal view
returns(bool)

Arguments

Name	Type	Description
_signer	address

_invalidateSignature

function _invalidateSignature(bytes _data) internal nonpayable

Arguments

Name	Type	Description
_data	bytes