ccp_prepare_data
ccp_prepare_data(&src, &dst, &op, AES_BLOCK_SIZE, true);
ccp_prepare_data(&src, &dst, &op, unit_size, true);
ccp_prepare_data(&src, &dst, &op, DES3_EDE_BLOCK_SIZE, true);
ccp_prepare_data(&src, NULL, &op, block_size, false);
ccp_prepare_data(&src, NULL, &op, AES_BLOCK_SIZE, true);
ccp_prepare_data(&wa->aad, NULL, &wa->op, AES_BLOCK_SIZE, true);
ccp_prepare_data(&wa->src, &wa->dst, &wa->op, AES_BLOCK_SIZE, true);