P5DF081HN/T1AD2060 NXP Semiconductors, P5DF081HN/T1AD2060 Datasheet - Page 17

• Manufacturer Part Number: P5DF081HN/T1AD2060
• Description: P5DF081HN/HVQFN32/REEL13//T1AD
• Manufacturer: NXP Semiconductors
• Series: MIFARE®r

Specifications of P5DF081HN/T1AD2060

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
Table 8.
P5DF081_SDS
Objective short data sheet
PUBLIC
Command
SAM_Verify_MAC
SAM_Generate_MAC
SAM_Decipher_Data
SAM_Encipher_Data
SAM_DecipherOffline_
Data
Data processing commands
Description
The SAM_Verify_MAC command verifies the MAC which was sent by the DESFire PICC or any
other system based on the given MACed plain text data and the currently valid cryptographic key.
The valid key has been activated using a valid PICC authentication (SAM_AuthenticatePICC,
SAM_ISOAuthenticatePICC) in case of a PICC Key or using a valid key activation
(SAM_ActivateOfflineKey) in case of an OfflineCrypto Key.
The applied MAC algorithm depends on the key type. In case of the AES key types and the
(3)DES key types 3 and 6, the standard CMAC algorithm is applied.
The SAM_Generate_MAC command creates a MAC which is meant to be sent to the DESFire
PICC or any other system based on the given plain text data and the currently valid cryptographic
key. The valid key has been activated using a valid PICC authentication (SAM_AuthenticatePICC,
SAM_ISOAuthenticatePICC) in case of a PICC Key or using a valid key activation
(SAM_ActivateOfflineKey) in case of an OfflineCrypto Key.
The applied MAC algorithm depends on the key type. In case of the AES key types and the
(3)DES key types 3 and 6, the standard CMAC algorithm is applied.
Same operation as in MIFARE SAM AV1 compatibility mode performed with either a
valid PICC authentication (SAM_AuthenticatePICC, SAM_ISOAuthenticatePICC or
SAM_AuthenticateMIFARE) in case of a PICC Key or a valid key activation
(SAM_ActivateOfflineKey) in case of an OfflineCrypto Key.
Same operation as in AV1 compatibility mode and same description.
The new SAM_DecipherOffline_Data command decrypts data received from any other system
based on the given cipher text data and the currently valid cryptographic OfflineCrypto Key. The
valid key has been activated using a valid key activation (SAM_ActivateOfflineKey).
The applied decryption is the block cipher algorithm depending on the key type in CBC mode. The
IV needs to be loaded via the SAM_LoadInitVector command before issuing this command. If no
IV was loaded, the zero byte IV is applied. No padding is removed from the decrypted plain text, so
the output length equals the input length.
The total input size must be a multiple of the block size of the underlying block cipher (depending
on the key type). In case of command chaining, the SAM immediately starts returning decrypted
data for the received blocks.
The new SAM_EncipherOffline_Data command encrypts data received from any other system
based on the given cipher text data and the currently valid cryptographic OfflineCrypto Key. The
valid key has been activated using a valid key activation (SAM_ActivateOfflineKey).
The applied decryption is the block cipher algorithm depending on the key type in CBC mode. The
IV needs to be loaded via the SAM_LoadInitVector command before issuing this command. If no
IV was loaded, the zero byte IV is applied. No padding is added to the plain text, so the output
length equals the input length.
As a consequence, the total input size must be a multiple of the block size of the underlying block
cipher (depending on the key type). In case of command chaining, the SAM immediately starts
returning encrypted data for the received blocks.
All information provided in this document is subject to legal disclaimers.
…continued
Rev. 1 — 12 August 2010
191710
P5DF081
MIFARE SAM AV2
© NXP B.V. 2010. All rights reserved.
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