[参考译文] CC2745R10-Q1：关于 PSA API

https://e2e.ti.com/support/wireless-connectivity/bluetooth-group/bluetooth/f/bluetooth-forum/1566039/cc2745r10-q1-about-the-psa-api

工具/软件：

您好：

我的环境如下：
板：CC2745R10-Q1
调试器：XDS110
SDK：SimpleLink Lowpower f3 ver.9.10.00.83
IDE：IAR Embedded Workbench for ARM 9.60.3.7274

PSA API 基本上被识别为同步 API、但如果您要使用异步处理或回调、该怎么办？

是否可以使用 PSA API 实现以下示例代码示例[在回调返回模式下使用明文加密密钥的单调用 CBC 解密]？
TI/simplelink_lowpower_f3_SDK_9_10_00_83/docs/secure_drivers/doxygen/html/_a_e_s_c_b_c_8h.html

#include <ti/drivers/AESCBC.h>
#include <ti/drivers/cryptoutils/cryptokey/CryptoKeyPlaintext.h>
...
// Test vector 0 from NIST CAPV set CBCMMT256
uint8_t iv[16] =                {0xdd, 0xbb, 0xb0, 0x17, 0x3f, 0x1e, 0x2d, 0xeb,
                                 0x23, 0x94, 0xa6, 0x2a, 0xa2, 0xa0, 0x24, 0x0e};
uint8_t ciphertext[16] =        {0xd5, 0x1d, 0x19, 0xde, 0xd5, 0xca, 0x4a, 0xe1,
                                 0x4b, 0x2b, 0x20, 0xb0, 0x27, 0xff, 0xb0, 0x20};
uint8_t keyingMaterial[32] =    {0x43, 0xe9, 0x53, 0xb2, 0xae, 0xa0, 0x8a, 0x3a,
                                 0xd5, 0x2d, 0x18, 0x2f, 0x58, 0xc7, 0x2b, 0x9c,
                                 0x60, 0xfb, 0xe4, 0xa9, 0xca, 0x46, 0xa3, 0xcb,
                                 0x89, 0xe3, 0x86, 0x38, 0x45, 0xe2, 0x2c, 0x9e};
uint8_t plaintext[sizeof(ciphertext)];
// The plaintext should be the following after the decryption operation:
//  0x07, 0x27, 0x0d, 0x0e, 0x63, 0xaa, 0x36, 0xda
//  0xed, 0x8c, 0x6a, 0xde, 0x13, 0xac, 0x1a, 0xf1
void cbcCallback(AESCBC_Handle handle,
                 int_fast16_t returnValue,
                 AESCBC_OperationUnion *operation,
                 AESCBC_OperationType operationType) {
    if (returnValue != AESCBC_STATUS_SUCCESS) {
        // handle error
    }
    if (operationType == AESCBC_OPERATION_TYPE_DECRYPT ||
        operationType == AESCBC_OPERATION_TYPE_ENCRYPT) {
        // do something with operation->oneStepOperation
    } else {
        // do something with operation->segmentedOperation
    }
}
AESCBC_OneStepOperation operation;
void cbcStartFunction(void) {
    AESCBC_Handle handle;
    AESCBC_Params params;
    CryptoKey cryptoKey;
    int_fast16_t decryptionResult;
    AESCBC_Params_init(&params);
    params.returnBehavior = AESCBC_RETURN_BEHAVIOR_CALLBACK;
    params.callbackFxn = cbcCallback;
    handle = AESCBC_open(0, &params);
    if (handle == NULL) {
        // handle error
    }
    CryptoKeyPlaintext_initKey(&cryptoKey, keyingMaterial, sizeof(keyingMaterial));
    AESCBC_OneStepOperation_init(&operation);
    operation.key               = &cryptoKey;
    operation.input             = ciphertext;
    operation.output            = plaintext;
    operation.inputLength       = sizeof(ciphertext);
    operation.iv                = iv;
    decryptionResult = AESCBC_oneStepDecrypt(handle, &operation);
    if (decryptionResult != AESCBC_STATUS_SUCCESS) {
        // handle error
    }
    // do other things while CBC operation completes in the background
}

此致、