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3837c202 SL |
1 | /* |
2 | * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
4 | * Licensed under the Apache License 2.0 (the "License"). You may not use | |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8 | */ | |
9 | ||
10 | #include "cipher_aes_ocb.h" | |
11 | ||
12 | #define OCB_SET_KEY_FN(fn_set_enc_key, fn_set_dec_key, \ | |
13 | fn_block_enc, fn_block_dec, \ | |
14 | fn_stream_enc, fn_stream_dec) \ | |
15 | fn_set_enc_key(key, keylen * 8, &ctx->ksenc.ks); \ | |
16 | fn_set_dec_key(key, keylen * 8, &ctx->ksdec.ks); \ | |
17 | if (!CRYPTO_ocb128_init(&ctx->ocb, &ctx->ksenc.ks, &ctx->ksdec.ks, \ | |
18 | (block128_f)fn_block_enc, (block128_f)fn_block_dec, \ | |
19 | ctx->base.enc ? (ocb128_f)fn_stream_enc : \ | |
20 | (ocb128_f)fn_stream_dec)) \ | |
21 | return 0; \ | |
22 | ctx->key_set = 1 | |
23 | ||
24 | ||
25 | static int cipher_hw_aes_ocb_generic_initkey(PROV_CIPHER_CTX *vctx, | |
26 | const unsigned char *key, | |
27 | size_t keylen) | |
28 | { | |
29 | PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx; | |
30 | ||
31 | /* | |
32 | * We set both the encrypt and decrypt key here because decrypt | |
33 | * needs both. (i.e- AAD uses encrypt). | |
34 | */ | |
35 | # ifdef HWAES_CAPABLE | |
36 | if (HWAES_CAPABLE) { | |
37 | OCB_SET_KEY_FN(HWAES_set_encrypt_key, HWAES_set_decrypt_key, | |
38 | HWAES_encrypt, HWAES_decrypt, | |
39 | HWAES_ocb_encrypt, HWAES_ocb_decrypt); | |
40 | } | |
41 | # endif | |
42 | # ifdef VPAES_CAPABLE | |
43 | if (VPAES_CAPABLE) { | |
44 | OCB_SET_KEY_FN(vpaes_set_encrypt_key, vpaes_set_decrypt_key, | |
45 | vpaes_encrypt, vpaes_decrypt, NULL, NULL); | |
46 | } else | |
47 | # endif | |
48 | { | |
49 | OCB_SET_KEY_FN(AES_set_encrypt_key, AES_set_decrypt_key, | |
50 | AES_encrypt, AES_decrypt, NULL, NULL); | |
51 | } | |
52 | return 1; | |
53 | } | |
54 | ||
55 | # if defined(AESNI_CAPABLE) | |
56 | ||
57 | static int cipher_hw_aes_ocb_aesni_initkey(PROV_CIPHER_CTX *vctx, | |
58 | const unsigned char *key, | |
59 | size_t keylen) | |
60 | { | |
61 | PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx; | |
62 | ||
63 | OCB_SET_KEY_FN(aesni_set_encrypt_key, aesni_set_decrypt_key, | |
64 | aesni_encrypt, aesni_decrypt, | |
65 | aesni_ocb_encrypt, aesni_ocb_decrypt); | |
66 | return 1; | |
67 | } | |
68 | ||
69 | # define PROV_CIPHER_HW_declare() \ | |
70 | static const PROV_CIPHER_HW aesni_ocb = { \ | |
71 | cipher_hw_aes_ocb_aesni_initkey, \ | |
72 | NULL \ | |
73 | }; | |
74 | # define PROV_CIPHER_HW_select() \ | |
75 | if (AESNI_CAPABLE) \ | |
76 | return &aesni_ocb; | |
77 | ||
78 | #elif defined(SPARC_AES_CAPABLE) | |
79 | ||
80 | static int cipher_hw_aes_ocb_t4_initkey(PROV_CIPHER_CTX *vctx, | |
81 | const unsigned char *key, | |
82 | size_t keylen) | |
83 | { | |
84 | PROV_AES_OCB_CTX *ctx = (PROV_AES_OCB_CTX *)vctx; | |
85 | ||
86 | OCB_SET_KEY_FN(aes_t4_set_encrypt_key, aes_t4_set_decrypt_key, | |
87 | aes_t4_encrypt, aes_t4_decrypt, NULL, NULL); | |
88 | return 1; | |
89 | } | |
90 | ||
91 | # define PROV_CIPHER_HW_declare() \ | |
92 | static const PROV_CIPHER_HW aes_t4_ocb = { \ | |
93 | cipher_hw_aes_ocb_t4_initkey, \ | |
94 | NULL \ | |
95 | }; | |
96 | # define PROV_CIPHER_HW_select() \ | |
97 | if (SPARC_AES_CAPABLE) \ | |
98 | return &aes_t4_ocb; | |
99 | #else | |
100 | # define PROV_CIPHER_HW_declare() | |
101 | # define PROV_CIPHER_HW_select() | |
102 | # endif | |
103 | ||
104 | static const PROV_CIPHER_HW aes_generic_ocb = { | |
105 | cipher_hw_aes_ocb_generic_initkey, | |
106 | NULL | |
107 | }; | |
108 | PROV_CIPHER_HW_declare() | |
109 | const PROV_CIPHER_HW *PROV_CIPHER_HW_aes_ocb(size_t keybits) | |
110 | { | |
111 | PROV_CIPHER_HW_select() | |
112 | return &aes_generic_ocb; | |
113 | } | |
114 | ||
115 |