These are double-length DES keys used to encrypt keys and PINs for incorporation into a text block. The text block is then encrypted to preserve the security of the key value. The encrypted text block, normally the value field in a TLV item, can be incorporated into a message sent to an EMV smart card.
DES keys | Callable services |
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Secure-messaging class (data
operation keys):
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SECMSG | Diversified Key Generate, Secure Messaging for Keys, Secure Messaging for PINs |