Specifies the content of the messages, commands and responses, transmitted by the interface device to the card and conversely; the structure and contents of the historical bytes sent by the card during the answer to reset; the structure of files and data, as seen at the interface when processing interindustry commands for interchange; access methods to files and data in the card; a security architecture defining access rights to files and data in the card; methods for securing messaging; access methods to the algorithms processed by the card.