Command and Reply Codes

The following commands and replies are reserved by the protocol for various actions. The following tables show their descriptions and whether or not this implementation of OSDP supports those commands.

Commands

Command	Value	Description	Support
CMD_POLL	0x60	Poll	✅
CMD_ID	0x61	ID Report Request	✅
CMD_CAP	0x62	Peripheral Device Capabilities Request	✅
CMD_DIAG	0x63	Diagnostic Function	🚫
CMD_LSTAT	0x64	Local Status Report Request	✅
CMD_ISTAT	0x65	Input Status Report Request	✅
CMD_OSTAT	0x66	Output Status Report Request	✅
CMD_RSTAT	0x67	Reader Status Tamper Report Request	✅
CMD_OUT	0x68	Output Control Command	✅
CMD_LED	0x69	Reader LED Control Command	✅
CMD_BUZ	0x6A	Reader Buzzer Control Command	✅
CMD_TEXT	0x6B	Reader Text Output Command	✅
CMD_RMODE	0x6C	Reader Mode Set	❌
CMD_TDSET	0x6D	Time and Date Set	❌
CMD_COMSET	0x6E	Communication Configuration Command	✅
CMD_BIOREAD	0x73	Scan and send biometric data	✅
CMD_BIOMATCH	0x74	Scan and match biometric data	✅
CMD_KEYSET	0x75	Encryption Key Set	✅
CMD_CHLNG	0x76	Challenge and Secure Session Initialization Request	✅
CMD_SCRYPT	0x77	Server’s Random Number and Server Cryptogram	✅
CMD_ACURXSIZE	0x7B	Maximum Acceptable Reply Size	✅
CMD_FILETRANSFER	0x7C	File transfer command	✅
CMD_MFG	0x80	Manufacturer Specific Command	✅
CMD_XWR	0xA1	Extended write data	❌
CMD_ABORT	0xA2	Abort PD operation	✅
CMD_PIVDATA	0xA3	Get PIV Data	❌
CMD_GENAUTH	0xA4	Request Authenticate	❌
CMD_CRAUTH	0xA5	Request Crypto Response	❌
CMD_KEEPACTIVE	0xA7	Keep secure channel active	✅

Responses

Response	Value	Description	Support
REPLY_ACK	0x40	General Acknowledge, Nothing to Report	✅
REPLY_NAK	0x41	Negative Acknowledge – SIO Comm Handler Error Response	✅
REPLY_PDID	0x45	Device Identification Report	✅
REPLY_PDCAP	0x46	Device Capabilities Report	✅
REPLY_LSTATR	0x48	Local Status Report	✅
REPLY_ISTATR	0x49	Input Status Report	✅
REPLY_OSTATR	0x4A	Output Status Report	✅
REPLY_RSTATR	0x4B	Reader Status Tamper Report	✅
REPLY_RAW	0x50	Card Data Report, Raw Bit Array	✅
REPLY_FMT	0x51	Card Data Report, Character Array	✅
REPLY_KEYPAD	0x53	Keypad Data Report	✅
REPLY_COM	0x54	Communication Configuration Report	✅
REPLY_BIOREADR	0x57	Biometric Data	✅
REPLY_BIOMATCHR	0x58	Biometric Match Result	✅
REPLY_CCRYPT	0x76	Client’s ID and Client’s Random Number	✅
REPLY_RMAC_I	0x78	Client Cryptogram Packet and the Initial R-MAC	✅
REPLY_BUSY	0x79	PD Is Busy Reply	✅
REPLY_FTSTAT	0x7A	File transfer status	✅
REPLY_PIVDATAR	0x80	PIV data reply	❌
REPLY_GENAUTHR	0x81	Authentication response	❌
REPLY_CRAUTHR	0x82	Response to challenge	❌
REPLY_MFGSTATR	0x83	Manufacturer specific status	❌
REPLY_MFGERRR	0x84	Manufacturer specific error	❌
REPLY_MFGREP	0x90	Manufacturer specific reply	✅
REPLY_XRD	0xB1	Extended read response	❌