User guide

MOTOROLA MPC184/MPC185 Security Co-Processor Software User’s Guide 21

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

Global Definitions

4.6.2.6 DES_LOADCTX_CRYPT_REQ

unsigned long opId;

unsigned long channel;

PMPC18x_NOTIFY_ROUTINE notify;

PMPC18x_NOTIFY_CTX pNotifyCtx;

PMPC18x_NOTIFY_ON_ERROR_ROUTINE notify_on_error;

MPC18x_NOTIFY_ON_ERROR_CTX ctxNotifyOnErr;

int status;

void* nextReq;

unsigned long inIvBytes; /* 0 or 8 bytes */

unsigned char* inIvData;

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 */

unsigned long outIvBytes; /* 0 or 8 bytes */

unsigned char* outIvData;

Dynamic channels are valid for this request. A channel value of zero is valid.

NUM_DES_LOADCTX_DESC defines the number of descriptors within the DPD_DES_CBC_CTX_GROUP that

use this request.

DPD_DES_CBC_CTX_GROUP (0x2500) defines the group for all descriptors within this request.

Table 12. DES_LOADCTX_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_DECRYPT_SA_LDCTX 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

decrypt in single DES using CBC mode

DPD_TDES_CBC_CTX_DECRYPT 0x2503 Load encrypted context from a dynamic channel to

encrypt in single DES using CBC mode