| -rw-r--r-- | pwmanager/keycard-format | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/pwmanager/keycard-format b/pwmanager/keycard-format new file mode 100644 index 0000000..1ae1b5e --- a/dev/null +++ b/pwmanager/keycard-format @@ -0,0 +1,55 @@ +<=========================> +< Format of PwM-KeyCard > +<=========================> +cardformat version: 0x01 + +The keycard has a small header area and a key-data body. + +The header is built with the following scheme: + +PWMKEYCARD +[CARDVER] +[CARD-ID] +[KEYDATA-LENGTH] + + +After this header, the key-data-body with the length +[KEYDATA-LENGTH] follows. + +Explanation of the header-fields: + +PWMKEYCARD is a magic string at the beginning of the card +to indentify the chipcard as a "pwm-keycard". + +[CARDVER] is one byte for holding the card-format version. + +[CARD-ID] are 4 bytes (an unsigned BIG-ENDIAN value) +to hold an ID number for the card. + +[KEYDATA-LENGTH] are 2 bytes (an unsigned short) for holding +the length of the key-data in BIG-ENDIAN format. + + +******************************* +* KeyCard backup-image format * +******************************* +backup image version: 0x01 + +PWMKEYCARD_BACKUPIMAGE +[IMAGEVER] +[CARD-ID] +[KEYDATA] + + +PWMKEYCARD_BACKUPIMAGE +magic header. + +[IMAGEVER] +version indentifier of the backup-image. + +[CARD-ID] +card-ID. see keycard-format. + +[KEYDATA] +All data after CARD-ID until the end of the file +is treated as the key itself. |