User guide

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

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

Global Definitions Global Definitions

4.6.6 AES Request Structures

The following section provides structure definitions for AES requests.

4.6.6.1 AESA_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 keyBytes; /* 16, 24, or 32 bytes */

unsigned char* keyData;

unsigned long inIvBytes; /* 0 or 16 bytes */

unsigned char* inIvData;

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

unsigned char* inData;

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

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

unsigned char* outCtxData;

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

NUM_AESA_CRYPT_DESC defines the number of descriptors within the DPD_AESA_CRYPT_GROUP that use

this request.

DPD_AESA_CRYPT_GROUP (0x6000) defines the group for all descriptors within this request.

Table 29. AESA_CRYPT_REQ Valid Descriptors (opId)

Descriptors Value Function Description

DPD_AESA_CBC_ENCRYPT_CRYPT 0x6000 Perform encryption in AESA using CBC mode

DPD_AESA_CBC_DECRYPT_CRYPT 0x6001 Perform decryption in AESA using CBC mode

DPD_AESA_CBC_DECRYPT_CRYPT_RDK 0x6002 Perform decryption in AESA using CBC mode with

RDK

DPD_AESA_ECB_ENCRYPT_CRYPT 0x6003 Perform encryption in AESA using ECB mode

DPD_AESA_ECB_DECRYPT_CRYPT 0x6004 Perform decryption in AESA using ECB mode

DPD_AESA_ECB_DECRYPT_CRYPT_RDK 0x6005 Perform decryption in AESA using ECB mode with RDK

DPD_AESA_CTR_CRYPT 0x6006 Perform CTR in AESA