The EDI teledeclarations are made via the EDIFACT message "INFENT". 

The security of the message is done in EDI5 by the use of teh AUTACK message.

The API was defined by la Direction Générale des Impôts (DGI) .

CRYPTIT-TVATDFC implements this API and includes

• a GUI application .
• signature of the documentation with or without control of its contents .
• detached and attached signature .
• 3 signatures support(test, real, test/real).
• Multi readers support via the ETB5V2C product.
• encryption and decryption of documents .

CRYPTIT-TVATDFC is sold as a package including the software and a reader.