| 1 | /*
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| 2 | * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | /*
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| 11 | * IDEA low level APIs are deprecated for public use, but still ok for internal
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| 12 | * use where we're using them to implement the higher level EVP interface, as is
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| 13 | * the case here.
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| 14 | */
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| 15 | #include "internal/deprecated.h"
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| 16 |
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| 17 | #include "cipher_idea.h"
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| 18 |
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| 19 | static int cipher_hw_idea_initkey(PROV_CIPHER_CTX *ctx,
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| 20 | const unsigned char *key, size_t keylen)
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| 21 | {
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| 22 | PROV_IDEA_CTX *ictx = (PROV_IDEA_CTX *)ctx;
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| 23 | IDEA_KEY_SCHEDULE *ks = &(ictx->ks.ks);
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| 24 |
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| 25 | if (ctx->enc
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| 26 | || ctx->mode == EVP_CIPH_OFB_MODE
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| 27 | || ctx->mode == EVP_CIPH_CFB_MODE) {
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| 28 | IDEA_set_encrypt_key(key, ks);
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| 29 | } else {
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| 30 | IDEA_KEY_SCHEDULE tmp;
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| 31 |
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| 32 | IDEA_set_encrypt_key(key, &tmp);
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| 33 | IDEA_set_decrypt_key(&tmp, ks);
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| 34 | OPENSSL_cleanse((unsigned char *)&tmp, sizeof(IDEA_KEY_SCHEDULE));
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| 35 | }
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| 36 | return 1;
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| 37 | }
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| 38 |
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| 39 | # define PROV_CIPHER_HW_idea_mode_ex(mode, UCMODE, fname) \
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| 40 | IMPLEMENT_CIPHER_HW_##UCMODE(mode, idea, PROV_IDEA_CTX, IDEA_KEY_SCHEDULE, \
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| 41 | fname) \
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| 42 | static const PROV_CIPHER_HW idea_##mode = { \
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| 43 | cipher_hw_idea_initkey, \
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| 44 | cipher_hw_idea_##mode##_cipher \
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| 45 | }; \
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| 46 | const PROV_CIPHER_HW *ossl_prov_cipher_hw_idea_##mode(size_t keybits) \
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| 47 | { \
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| 48 | return &idea_##mode; \
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| 49 | }
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| 50 |
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| 51 | # define PROV_CIPHER_HW_idea_mode(mode, UCMODE) \
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| 52 | PROV_CIPHER_HW_idea_mode_ex(mode, UCMODE, IDEA_##mode)
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| 53 |
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| 54 | PROV_CIPHER_HW_idea_mode(cbc, CBC)
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| 55 | PROV_CIPHER_HW_idea_mode(ofb64, OFB)
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| 56 | PROV_CIPHER_HW_idea_mode(cfb64, CFB)
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| 57 | /*
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| 58 | * IDEA_ecb_encrypt() does not have a enc parameter - so we create a macro
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| 59 | * that ignores this parameter when IMPLEMENT_CIPHER_HW_ecb() is called.
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| 60 | */
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| 61 | #define IDEA2_ecb_encrypt(in, out, ks, enc) IDEA_ecb_encrypt(in, out, ks)
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| 62 |
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| 63 | PROV_CIPHER_HW_idea_mode_ex(ecb, ECB, IDEA2_ecb)
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