omeqagear / creditcard_validator Goto Github PK

This program reads credit card information from a JSON file and writes validated credit card information to another JSON file. The validation includes the Luhn algorithm for card numbers, verification of expiration dates, and checking that CVV codes are three digits. The program also determines the brand of the credit card using its number.

• Rust programming language
• serde_json library
• chrono library

1. Create a file named credit_cards.json in the root directory of the project.

2. Add credit card information to credit_cards.json in the following format:

   {
       "credit_cards": [
           {
               "CreditCardNumber": "[CARD_NUMBER]",
               "ExpDate": "[EXPIRATION_DATE]",
               "CVV": "[CVV_CODE]"
           },
           {
               "CreditCardNumber": "[CARD_NUMBER]",
               "ExpDate": "[EXPIRATION_DATE]",
               "CVV": "[CVV_CODE]"
           },
           ...
       ]
   }
   

   Replace [CARD_NUMBER] with the credit card number (no spaces or dashes), [EXPIRATION_DATE] with the expiration date in MM/yy format, and [CVV_CODE] with the three-digit CVV code on the back of the card.

3. Run cargo run.

4. The program will create a new file named validated_credit_cards.json in the root directory that contains the validated credit card information in the following format:

   {
       "validated_credit_cards": [
           {
               "card_number": "[CARD_NUMBER]",
               "exp_date": "[EXPIRATION_DATE]",
               "cvv": "[CVV_CODE]",
               "brand": "[CARD_BRAND]",
               "valid": true
           },
           {
               "card_number": "[CARD_NUMBER]",
               "exp_date": "[EXPIRATION_DATE]",
               "cvv": "[CVV_CODE]",
               \"brand": "[CARD_BRAND]",
               \"valid": true
           },
           ...
       ]
   }
   

   Replace [CARD_NUMBER] with the credit card number (with spaces every four digits), [EXPIRATION_DATE] with the expiration date in MM/yy format, [CVV_CODE] with the three-digit CVV code on the back of the card, and [CARD_BRAND] with the determined brand of the credit card. The valid field will be true if the credit card is valid and false otherwise.