vtk_validate_keyformat

Usage
vtk_validate_keyformat key

Description
Validate the format of a key to see if it appears to be valid.
i.e. it appears to be of the format: "32:ABCDEFG" with a size
prefix followed by base64 encoded bytes, and that
the decoded byte size matches the declared size.

Example
vtk_validate_keyformat "32:WLnCP2UrB5AxeasboN03Zo8o6F4fu4CPknVINqen9Zg="

Seealso
vtk_generate_signature_keypair vtk_validate_message

Returns
1 indicating message validation was a success, or 0 indicating it was not