FT4 Library/lib.ft4.core.auth/_validate_evm_signature

_validate_evm_signature

function _validate_evm_signature(op: gtx_operation, auth_op: gtx_operation, flags: list<text>, account: account, auth_descriptor: account_auth_descriptor)(source)

Verifies that the signature found in the evm_auth operation is valid to authorize the operation being called.

Throws if the signature cannot be validated. The most common reasons include:

  • the auth handler for op is not found

  • the signer is not registered in the auth descriptor

  • too few signers signed the operation, in case of a multisig auth descriptor

  • the signer signed the wrong message

  • the auth descriptor does not give sufficient permissions for the operation that is being called

Parameters

op

the operation being called

auth_op

the evm_auth operation that is authorizing this operation

flags

the flags required by the operation

account

the account the user authenticated as

auth_descriptor

the auth descriptor that is authorizing this operation