1*e7be843bSPierre Pronchery /*
2*e7be843bSPierre Pronchery * Copyright 2021-2024 The OpenSSL Project Authors. All Rights Reserved.
3*e7be843bSPierre Pronchery *
4*e7be843bSPierre Pronchery * Licensed under the Apache License 2.0 (the "License"). You may not use
5*e7be843bSPierre Pronchery * this file except in compliance with the License. You can obtain a copy
6*e7be843bSPierre Pronchery * in the file LICENSE in the source distribution or at
7*e7be843bSPierre Pronchery * https://www.openssl.org/source/license.html
8*e7be843bSPierre Pronchery */
9*e7be843bSPierre Pronchery
10*e7be843bSPierre Pronchery /*-
11*e7be843bSPierre Pronchery * Generic support for SM4 CCM.
12*e7be843bSPierre Pronchery */
13*e7be843bSPierre Pronchery
14*e7be843bSPierre Pronchery #include "cipher_sm4_ccm.h"
15*e7be843bSPierre Pronchery #include "crypto/sm4_platform.h"
16*e7be843bSPierre Pronchery
17*e7be843bSPierre Pronchery #define SM4_HW_CCM_SET_KEY_FN(fn_set_enc_key, fn_blk, fn_ccm_enc, fn_ccm_dec) \
18*e7be843bSPierre Pronchery fn_set_enc_key(key, &actx->ks.ks); \
19*e7be843bSPierre Pronchery CRYPTO_ccm128_init(&ctx->ccm_ctx, ctx->m, ctx->l, &actx->ks.ks, \
20*e7be843bSPierre Pronchery (block128_f)fn_blk); \
21*e7be843bSPierre Pronchery ctx->str = ctx->enc ? (ccm128_f)fn_ccm_enc : (ccm128_f)fn_ccm_dec; \
22*e7be843bSPierre Pronchery ctx->key_set = 1;
23*e7be843bSPierre Pronchery
ccm_sm4_initkey(PROV_CCM_CTX * ctx,const unsigned char * key,size_t keylen)24*e7be843bSPierre Pronchery static int ccm_sm4_initkey(PROV_CCM_CTX *ctx,
25*e7be843bSPierre Pronchery const unsigned char *key, size_t keylen)
26*e7be843bSPierre Pronchery {
27*e7be843bSPierre Pronchery PROV_SM4_CCM_CTX *actx = (PROV_SM4_CCM_CTX *)ctx;
28*e7be843bSPierre Pronchery
29*e7be843bSPierre Pronchery #ifdef HWSM4_CAPABLE
30*e7be843bSPierre Pronchery if (HWSM4_CAPABLE) {
31*e7be843bSPierre Pronchery SM4_HW_CCM_SET_KEY_FN(HWSM4_set_encrypt_key, HWSM4_encrypt, NULL, NULL);
32*e7be843bSPierre Pronchery } else
33*e7be843bSPierre Pronchery #endif /* HWSM4_CAPABLE */
34*e7be843bSPierre Pronchery
35*e7be843bSPierre Pronchery #ifdef VPSM4_EX_CAPABLE
36*e7be843bSPierre Pronchery if (VPSM4_EX_CAPABLE) {
37*e7be843bSPierre Pronchery SM4_HW_CCM_SET_KEY_FN(vpsm4_ex_set_encrypt_key, vpsm4_ex_encrypt, NULL,
38*e7be843bSPierre Pronchery NULL);
39*e7be843bSPierre Pronchery } else
40*e7be843bSPierre Pronchery #endif /* VPSM4_EX_CAPABLE */
41*e7be843bSPierre Pronchery
42*e7be843bSPierre Pronchery #ifdef VPSM4_CAPABLE
43*e7be843bSPierre Pronchery if (VPSM4_CAPABLE) {
44*e7be843bSPierre Pronchery SM4_HW_CCM_SET_KEY_FN(vpsm4_set_encrypt_key, vpsm4_encrypt, NULL, NULL);
45*e7be843bSPierre Pronchery } else
46*e7be843bSPierre Pronchery #endif /* VPSM4_CAPABLE */
47*e7be843bSPierre Pronchery {
48*e7be843bSPierre Pronchery SM4_HW_CCM_SET_KEY_FN(ossl_sm4_set_key, ossl_sm4_encrypt, NULL, NULL);
49*e7be843bSPierre Pronchery }
50*e7be843bSPierre Pronchery return 1;
51*e7be843bSPierre Pronchery }
52*e7be843bSPierre Pronchery
53*e7be843bSPierre Pronchery static const PROV_CCM_HW ccm_sm4 = {
54*e7be843bSPierre Pronchery ccm_sm4_initkey,
55*e7be843bSPierre Pronchery ossl_ccm_generic_setiv,
56*e7be843bSPierre Pronchery ossl_ccm_generic_setaad,
57*e7be843bSPierre Pronchery ossl_ccm_generic_auth_encrypt,
58*e7be843bSPierre Pronchery ossl_ccm_generic_auth_decrypt,
59*e7be843bSPierre Pronchery ossl_ccm_generic_gettag
60*e7be843bSPierre Pronchery };
61*e7be843bSPierre Pronchery
62*e7be843bSPierre Pronchery #if defined(OPENSSL_CPUID_OBJ) && defined(__riscv) && __riscv_xlen == 64
63*e7be843bSPierre Pronchery # include "cipher_sm4_ccm_hw_rv64i.inc"
64*e7be843bSPierre Pronchery #else
ossl_prov_sm4_hw_ccm(size_t keybits)65*e7be843bSPierre Pronchery const PROV_CCM_HW *ossl_prov_sm4_hw_ccm(size_t keybits)
66*e7be843bSPierre Pronchery {
67*e7be843bSPierre Pronchery return &ccm_sm4;
68*e7be843bSPierre Pronchery }
69*e7be843bSPierre Pronchery #endif
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