Syntax
static const mbedtls_cipher_base_t ccm_aes_info = {
MBEDTLS_CIPHER_ID_AES,
NULL,
#if defined(MBEDTLS_CIPHER_MODE_CBC)
NULL,
#endif
#if defined(MBEDTLS_CIPHER_MODE_CFB)
NULL,
#endif
#if defined(MBEDTLS_CIPHER_MODE_OFB)
NULL,
#endif
#if defined(MBEDTLS_CIPHER_MODE_CTR)
NULL,
#endif
#if defined(MBEDTLS_CIPHER_MODE_XTS)
NULL,
#endif
#if defined(MBEDTLS_CIPHER_MODE_STREAM)
NULL,
#endif
#if defined(MBEDTLS_CCM_C)
ccm_aes_setkey_wrap,
#if !defined(MBEDTLS_BLOCK_CIPHER_NO_DECRYPT)
ccm_aes_setkey_wrap,
#endif
ccm_ctx_alloc,
ccm_ctx_free,
#else
NULL,
NULL,
NULL,
NULL,
#endif
};