Re: Invalid authentication

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Posted by zeitcontrol ( on June 11, 2004 at 06:57:43:

In Reply to: Invalid authentication posted by rishel on June 08, 2004 at 11:04:48:

66C3 means swDesCheckError. This happens if the data decrypted from encrypted command is detected to be invalid. This is detected depending on algorithm used by checksum or validating other data transmitted together with encrypted data. You have to check your implementation of BasicCard encryption to find your problem. Still it is difficult to find such an error since you cannot see which part of your encryption does include this error.

Please contact me by email for further assistance.

Michael Petig
ZeitControl cardsystems GmbH

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