Performs dynamic validation of signed code and returns detailed error information in the case of failure.
- macOS 10.6+
The code object to be validated.
Optional flags; see
Secfor possible values. Pass
kfor standard behavior.
Sec CSDefault Flags
A code requirement specifying additional conditions the code must satisfy to be considered valid. Specify
NULLif you don’t want to impose any additional requirements. Use the
Requirement Create With String
Secfunction to create a code requirement object. See Code Signing Guide for a discussion of code requirements.
Requirement Create With String And Errors
On return, if the function call fails and returns a result code other than
err, points to an error object further describing the nature and circumstances of the failure. Use the
CFErrorfunction to retrieve the user info dictionary from the error object. See User Info Dictionary Error Keys for possible values. Pass
Copy User Info
NULLif you do not want this information. Call the
CFReleasefunction to release this object when you are finished with it.
A result code. See Code Signing Services Result Codes.
This function obtains and verifies the signature on the code specified by the code object. It checks the validity of only those sealed components required to establish identity. For guest code, first the function checks the code object’s dynamic validity status as reported by its host, then it ensures that the code object’s host is in turn valid. For all code, it validates the code against a code requirement if one is specified. The call succeeds if all these conditions are satisfactory.
This function is secure against attempts to modify the file system source of the code object.