1 // SPDX-License-Identifier: BSD-2-Clause
3  * Copyright (c) 2014-2019, Linaro Limited
30 	assert(ctx && ctx->ops == &ltc_xts_ops);  in to_xts_ctx()
42 	struct ltc_xts_ctx *c = to_xts_ctx(ctx);  in ltc_xts_init()  local
47 		if (iv_len != sizeof(c->tweak))  in ltc_xts_init()
49 		memcpy(c->tweak, iv, sizeof(c->tweak));  in ltc_xts_init()
51 		memset(c->tweak, 0, sizeof(c->tweak));  in ltc_xts_init()
54 	if ((int)iv_len != cipher_descriptor[c->cipher_idx]->block_length)  in ltc_xts_init()
58 		c->update = xts_encrypt;  in ltc_xts_init()
60 		c->update = xts_decrypt;  in ltc_xts_init()
63 	if (xts_start(c->cipher_idx, key1, key2, key1_len, 0,  in ltc_xts_init()
64 		      &c->state) == CRYPT_OK)  in ltc_xts_init()
74 	struct ltc_xts_ctx *c = to_xts_ctx(ctx);  in ltc_xts_update()  local
76 	if (c->update && c->update(data, len, dst, c->tweak,  in ltc_xts_update()
77 				   &c->state) == CRYPT_OK)  in ltc_xts_update()
85 	xts_done(&to_xts_ctx(ctx)->state);  in ltc_xts_final()
99 	assert(src->cipher_idx == dst->cipher_idx);  in ltc_xts_copy_state()
100 	dst->update = src->update;  in ltc_xts_copy_state()
101 	memcpy(dst->tweak, src->tweak, sizeof(src->tweak));  in ltc_xts_copy_state()
102 	dst->state = src->state;  in ltc_xts_copy_state()
115 	struct ltc_xts_ctx *c = NULL;  in crypto_aes_xts_alloc_ctx()  local
121 	c = calloc(1, sizeof(*c));  in crypto_aes_xts_alloc_ctx()
122 	if (!c)  in crypto_aes_xts_alloc_ctx()
125 	c->ctx.ops = &ltc_xts_ops;  in crypto_aes_xts_alloc_ctx()
126 	c->cipher_idx = cipher_idx;  in crypto_aes_xts_alloc_ctx()
127 	*ctx_ret = &c->ctx;  in crypto_aes_xts_alloc_ctx()