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SEC 2.0 Reference Device Driver User’s Guide, Rev. 0

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Individual Request Type Descriptions

4.2.2 DES_CRYPT_REQ

COMMON_REQ_PREAMBLE

unsigned long keyBytes; /* 8, 16, or 24 bytes */

unsigned char *keyData;

unsigned long inBytes; /* multiple of 8 bytes */

unsigned char *inData;

unsigned char *outData; /* output length = input length */

NUM_DES_DESC defines the number of descriptors within the DPD_DES_ECB_GROUP that use this request.

DPD_DES_ECB_GROUP (0x2600) defines the group for all descriptors within this request.

4.3 ARC4 Requests

4.3.1 ARC4_LOADCTX_CRYPT_REQ

COMMON_REQ_PREAMBLE

unsigned long inCtxBytes; /* 257 bytes */

Table 7. DES_CBC_CRYPT_REQ Valid Descriptors (opId)

Descriptors Value Function Description

DPD_SDES_CBC_CTX_ENCRYPT 0x2500 Load encrypted context from a dynamic channel to

encrypt in single DES using CBC mode

DPD_SDES_CBC_CTX_DECRYPT 0x2501 Load encrypted context from a dynamic channel to

decrypt in single DES using CBC mode

DPD_TDES_CBC_CTX_ENCRYPT 0x2502 Load encrypted context from a dynamic channel to

encrypt in triple DES using CBC mode

DPD_TDES_CBC_CTX_DECRYPT 0x2503 Load encrypted context from a dynamic channel to

decrypt in triple DES using CBC mode

Table 8. DES_CRYPT_REQ Valid Descriptors (opId)

Descriptors Value Function Description

DPD_SDES_ECB_ENCRYPT 0x2600 Encrypt data in single DES using ECB mode

DPD_SDES_ECB_DECRYPT 0x2601 Decrypt data in single DES using ECB mode

DPD_TDES_ECB_ENCRYPT 0x2602 Encrypt data in triple DES using ECB mode

DPD_TDES_ECB_DECRYPT 0x2603 Decrypt data in triple DES using ECB mode

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Freescale-semiconductor SEC2SWUG Manual de usuario Pagina 15