| 摘要 |
<p>The method involves encrypting an identifier (13) to obtain an authenticator, having a data length defined by a large number of alphanumeric characters, by mathematic operation. The authenticator is encrypted by another mathematic operation using a Hash function to obtain another authenticator of reduced size, where the latter authenticator is composed of a data length lesser than that of the former length. The latter authenticator is converted into a coded image which is a bar code (11) of reduced size, and the coded image is placed on a product as a coded mark to authenticate the product.</p> |
