flipperzero-firmware/documentation/file_formats/iButtonFileFormat.md

iButton key file format

Example

Filetype: Flipper iButton key
Version: 2
Protocol: DS1992
Rom Data: 08 DE AD BE EF FA CE 4E
Sram Data: 4E 65 76 65 72 47 6F 6E 6E 61 47 69 76 65 59 6F 75 55 70 4E 65 76 65 72 47 6F 6E 6E 61 4C 65 74 59 6F 75 44 6F 77 6E 4E 65 76 65 72 47 6F 6E 6E 61 52 75 6E 41 72 6F 75 6E 64 41 6E 64 44 65 73 65 72 74 59 6F 75 4E 65 76 65 72 47 6F 6E 6E 61 4D 61 6B 65 59 6F 75 43 72 79 4E 65 76 65 72 47 6F 6E 6E 61 53 61 79 47 6F 6F 64 62 79 65 4E 65 76 65 72 47 6F 6E 6E 61 54 65 6C 6C 41 4C 69 65

Description

Filename extension: .ibtn

The file stores a single iButton key, complete with all data required by the protocol.

Version history

2. Current version.

Changelog:

• Added support for different Dallas protocols
• Fields after Protocol are protocol-dependent for flexibiliy

Format fields

Name	Type	Description
Protocol	string	Currently supported: DS1990, DS1992, DS1996, DS1971, DSGeneric*, Cyfral, Metakom
Rom Data	hex	Read-only memory data (Dallas protocols only)
Sram Data	hex	Static RAM data (DS1992 and DS1996 only)
Eeprom Data	hex	EEPROM data (DS1971 only)
Data	hex	Key data (Cyfral & Metakom only)

NOTE 1: DSGeneric is a catch-all protocol for all unknown 1-Wire devices. It reads only the ROM and does not perform any checks on the read data. It can also be used if a key with a deliberately invalid family code or checksum is required.

NOTE 2: When adding new protocols, it is not necessarily to increase the format version, define the format in the protocol implementation instead.

1. Initial version.

Deprecated, will be converted to current version upon saving.

Format fields

Name	Type	Description
Key type	string	Currently supported: Cyfral, Dallas, Metakom
Data	hex	Key data