Function SecVerifyTransformCreate 

pub unsafe extern "C-unwind" fn SecVerifyTransformCreate(
    key: &SecKey,
    signature: Option<&CFData>,
    error: *mut *mut CFError,
) -> Option<CFRetained<SecTransform>>

👎Deprecated: SecTransform is no longer supported

Available on crate features SecBase and SecSignVerifyTransform and SecTransform only.

Creates a verify computation object.

Parameter key: A SecKey with the public key used for signing.

Parameter signature: A CFDataRef with the signature. This value may be NULL, and you may connect a transform to kSecTransformSignatureAttributeName to supply it from another signature.

Parameter error: A pointer to a CFErrorRef. This pointer will be set if an error occurred. This value may be NULL if you do not want an error returned.

Returns: A pointer to a SecTransformRef object. This object must be released with CFRelease when you are done with it. This function will return NULL if an error occurred.

This function creates a transform which verifies a cryptographic signature. The InputIS defaults to kSecInputIsPlainText, and the DigestType and DigestLength default to something appropriate for the type of key you have supplied.

Safety

error must be a valid pointer or null.