pub fn parse_pkcs11_object_label(uri: &str) -> Result<String, String>Expand description
Extract the object (key label) from a PKCS#11 URI.
PKCS#11 URI format: pkcs11:token=TOKEN;object=KEY_LABEL;type=private
Returns the value of the object attribute, which is the CKA_LABEL
used to find the private key in the PKCS#11 token.
Per RFC 7512 §2.3, values may be percent-encoded; this function
decodes %XX sequences.