PROV_SM4_CCM_CTX
PROV_SM4_CCM_CTX *ctx;
PROV_SM4_CCM_CTX *ctx = provctx;
PROV_SM4_CCM_CTX *dctx = NULL;
PROV_SM4_CCM_CTX *ctx = (PROV_SM4_CCM_CTX *)vctx;
PROV_SM4_CCM_CTX *actx = (PROV_SM4_CCM_CTX *)ctx;