Truncation Sample Clauses

Truncation. Merchant must comply and adhere to the security provisions set forth in the Fair and Accurate Credit Transactions Act of 2003 (FACTA) which mandate that card receipts given to the Cardholder may not contain: (i) more than the last five digits of the credit card account number; and (ii) that the Card receipt may not contain the expiration date.

Truncation the ability to eliminate all digits of a credit card number except the last 4 digits or the first 2 / last 4 digits;

Truncation. The idea of truncation consists of simply discarding part of the output of an n-bit permutation P : TruncP (x) = lefta(P (x)) , (3) where 0 ™ a ™ n. The idea dates back to Hall et al. [34], who proved 2n−a/2 security for a specific selection of parameters ▇. ▇▇▇▇▇▇▇ and ▇▇▇▇▇▇▇▇▇▇▇ [5] and ▇▇▇▇▇▇ and Gueron [26] improved the scope of the proof to tight 2n−a/2 security for all parameter choices. The first documented solution for the problem, how- ever, dates back to 1978, when Stam [62], derived it in a non-cryptographic context. (See also ▇▇▇▇▇▇ et al. [27].) ▇▇▇▇▇▇▇▇▇▇▇▇ and ▇▇▇▇▇ [13] recently transformed Stam’s analysis to the chi-squared method and derived the iden- tical 2n−a/2 bound. Mennink [50] considered a general treatment of truncation with pre- and post-processing and related the generalized scheme with historical results of Stam from 1986 [63].

Truncation i) The Credit Card account number must be truncated on all Cardholder-activated Transaction Receipts. Truncated digits should be replaced with a fill character such as “x,” “*,” or “#,” and not with blank spaces or numeric characters. ii) Effective July 1, 2003, all new POS Devices must suppress all but the last four digits of the Credit Card account number and the entire expiration date on the Cardholder’s copy of the Transaction Receipt generated from electronic (including Cardholder-activated) POS Devices. Effective July 1, 2006, all existing POS Devices must comply with the rule set forth in this subsection. iii) These truncation rules do not apply to Transactions in which the only way to record a Credit Card account number is in handwriting or by making an imprint or copy of the Credit Card.

Truncation. Our security analysis will, in part, rely on the PRF security of truncation of (3). We copy the result of Stam [62], translated to cryptographic terminology [13, 50]. Lemma 2 (Truncation [13, 50, 62]). Let n, a, q N such that 0 ™ a ™ n. We have: prf Trunca (q) ™ ..qΣ /22n−a Σ1/2 3 Summation-Truncation Hybrid‌ Let n, a N such that 0 ™ a ™ n, and write b = n a. Let P Perm[n] be a permutation. We define the Summation-Truncation Hybrid STHa Func[n 1,n + a] as follows:

Truncation. All paper documents other than Checks (including envelopes and invoices) imaged for your Lockbox will be retained for a period of five (5) business days and then destroyed. Monthly (unless you otherwise request in writing) images delivered via CD-ROM and/or the Internet replace the original documents that were imaged. Requests for retrieval of original paper documents can be made within the five (5) business day retention period only. We are not responsible for any documents destroyed in connection with this service.

Truncation. A unit member who has reached the top of any truncated column shall not receive step credit on the next higher column for the years during which frozen at his or her step on the lower column.