Description: many websites log, the article was published with other parts of the picture authentication codes used to prevent malicious attacks and has achieved great results. I have also used three versions of the pictures authentication code procedures, the latest version can generate random miscellaneous, and color can be set up, the thinking that it would be absolutely safe, but suddenly discovered, many of the current procedures for authentication code is not security, a closer look reveals many loopholes, So try to do with the 3,721 that Java version
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