Tankolas atveres!

[pyxys1]

They calculate the customer's
original PIN by encrypting the account number printed on the front of the customer's
card with a secret DES key called a \PIN generation key". The resulting ciphertext
page 3
is converted into hexadecimal, and the rst four digits taken. Each digit has a range of
`0'-`F'. In order to convert this value into a PIN which can be typed on a decimal keypad,
a \decimalisation table" is used, which is a many-to-one mapping between hexadecimal
digits and numeric digits. The left decimalisation table in Figure 1 is typical.

na, nem is emlékeztem annyira rosszul...
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Best regards,
 pyxys1                            mailto:pyxys1 at westel900.net