D

Declined or Decline

Declined or Decline:

The denial of an Authorization Request by, or on behalf of, an Issuer Member.

Decryption

Decryption:

The process of changing data (usually the PIN block) from cipher text to clear text.

Demand Deposit Account (DDA)

Demand Deposit Account (DDA):

Usually abbreviated as DDA, it refers to the merchant bank account First Data credits or debits for deposits, fees and adjustments.

Deposit Account

Deposit Account:

An Access Account, other than a Credit Account, maintained by a Member for processing transactions. Deposit Accounts include checking, NOW, savings, share draft, and such other depository accounts as are legal under Applicable Law.

Deposit Credit

Deposit Credit:

See Credit Deposit.

Deposit Processing Day

Deposit Processing Day:

The period during which a Member processes deposits made on a given Business Day pursuant to these Rules. That period may occur on a single Business Day or may begin on one Business Day and end on a second Business Day.

Deposit Service

Deposit Service:

The deposit of currency and other eligible items at a STAR ATM for credit to an Access Account of a STAR Cardholder maintained with an Issuer Member, and processing, Settlement and Adjustment with respect to such deposits, as provided for in these Rules.

Dial-Up Line

Dial-Up Line:

A communications medium described as a non-dedicated telephone line, in which a connection is established by dialing a destination number and broken when the call is complete. This is the same type of phone line that you use at home.
<h1>Dial-Up Terminal:</h1>
An authorization terminal that (like a telephone) dials the authorization center for validation of transactions.

Digital Certificate

Digital Certificate:

An electronic message that at least (i) identifies the Certificate Authority issuing it, (ii) names or identifies a STAR Account Holder, (iii) contains the STAR Account Holder&#8217;s Public Key, (iv) identifies its operational period, and (v) is digitally signed by the Certificate Authority issuing it. Digital Certificates may be used as Authentication Tokens in eSign Authentication Program and Retail ID Authentication Program Authentication.

Digital Signature

Digital Signature:

A transformation of an electronic message using an asymmetric cryptosystem and a hash function such that a person receiving the initial message and a STAR Account Holder&#8217;s Public Key can accurately determine:<br />
Whether the transformation was created using the Private Key that corresponds to the STAR Account Holder&#8217;s Public Key and whether the initial message has been altered since the transformation was made.