1 // SPDX-License-Identifier: BSD-2-Clause
3  * Copyright (c) 2019 Huawei Technologies Co., Ltd
27 	assert(ctx && ctx->ops == &sm4_cbc_ops);  in to_sm4_cbc_ctx()
38 	struct sm4_cbc_ctx *c = to_sm4_cbc_ctx(ctx);  in sm4_cbc_init()  local
40 	if (key1_len != 16 || iv_len != sizeof(c->iv))  in sm4_cbc_init()
44 		sm4_setkey_enc(&c->state, key1);  in sm4_cbc_init()
46 		sm4_setkey_dec(&c->state, key1);  in sm4_cbc_init()
48 	memcpy(c->iv, iv, sizeof(c->iv));  in sm4_cbc_init()
57 	struct sm4_cbc_ctx *c = to_sm4_cbc_ctx(ctx);  in sm4_cbc_update()  local
59 	sm4_crypt_cbc(&c->state, len, c->iv, data, dst);  in sm4_cbc_update()
66 	struct sm4_cbc_ctx *c = to_sm4_cbc_ctx(ctx);  in sm4_cbc_final()  local
68 	memzero_explicit(&c->state, sizeof(c->state));  in sm4_cbc_final()
69 	memzero_explicit(&c->iv, sizeof(c->iv));  in sm4_cbc_final()
83 	dst->state = src->state;  in sm4_cbc_copy_state()
84 	memcpy(dst->iv, src->iv, sizeof(src->iv));  in sm4_cbc_copy_state()
97 	struct sm4_cbc_ctx *c = NULL;  in crypto_sm4_cbc_alloc_ctx()  local
99 	c = calloc(1, sizeof(*c));  in crypto_sm4_cbc_alloc_ctx()
100 	if (!c)  in crypto_sm4_cbc_alloc_ctx()
103 	c->ctx.ops = &sm4_cbc_ops;  in crypto_sm4_cbc_alloc_ctx()
104 	*ctx_ret = &c->ctx;  in crypto_sm4_cbc_alloc_ctx()