DE55 - Cryptogram (Tag 9F27)
Data Element 55 (DE55) typically contains various components that provide specific information about a financial transaction, especially in the context of credit card processing. Today we will learn one of the important components of DE55. The Cryptogram (Tag 9f27) The Cryptogram (Tag 9F27) plays a crucial role in the security of card transactions, particularly in EMV (Europay, Mastercard, Visa) chip card transactions. Here's an explanation of its role in the card transaction lifecycle: 1. Creation of Cryptogram :- The Cryptogram is generated by the chip on the EMV payment card during the transaction process. - It's created based on various data elements, including transaction details, card data, and a secret cryptographic key stored on the chip. 2. Purpose of Cryptogram :- The primary purpose of the Cryptogram is to ensure the authenticity of the card and the integrity of the transaction data. - It helps prevent fraud by providing a unique code for each transaction, making i