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      1 /*
      2  * Copyright 2019-2020 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 /*
     11  * IDEA low level APIs are deprecated for public use, but still ok for internal
     12  * use where we're using them to implement the higher level EVP interface, as is
     13  * the case here.
     14  */
     15 #include "internal/deprecated.h"
     16 
     17 #include "cipher_idea.h"
     18 
     19 static int cipher_hw_idea_initkey(PROV_CIPHER_CTX *ctx,
     20     const unsigned char *key, size_t keylen)
     21 {
     22     PROV_IDEA_CTX *ictx = (PROV_IDEA_CTX *)ctx;
     23     IDEA_KEY_SCHEDULE *ks = &(ictx->ks.ks);
     24 
     25     if (ctx->enc
     26         || ctx->mode == EVP_CIPH_OFB_MODE
     27         || ctx->mode == EVP_CIPH_CFB_MODE) {
     28         IDEA_set_encrypt_key(key, ks);
     29     } else {
     30         IDEA_KEY_SCHEDULE tmp;
     31 
     32         IDEA_set_encrypt_key(key, &tmp);
     33         IDEA_set_decrypt_key(&tmp, ks);
     34         OPENSSL_cleanse((unsigned char *)&tmp, sizeof(IDEA_KEY_SCHEDULE));
     35     }
     36     return 1;
     37 }
     38 
     39 #define PROV_CIPHER_HW_idea_mode_ex(mode, UCMODE, fname)                       \
     40     IMPLEMENT_CIPHER_HW_##UCMODE(mode, idea, PROV_IDEA_CTX, IDEA_KEY_SCHEDULE, \
     41         fname) static const PROV_CIPHER_HW idea_##mode                         \
     42         = {                                                                    \
     43               cipher_hw_idea_initkey,                                          \
     44               cipher_hw_idea_##mode##_cipher                                   \
     45           };                                                                   \
     46     const PROV_CIPHER_HW *ossl_prov_cipher_hw_idea_##mode(size_t keybits)      \
     47     {                                                                          \
     48         return &idea_##mode;                                                   \
     49     }
     50 
     51 #define PROV_CIPHER_HW_idea_mode(mode, UCMODE) \
     52     PROV_CIPHER_HW_idea_mode_ex(mode, UCMODE, IDEA_##mode)
     53 
     54 PROV_CIPHER_HW_idea_mode(cbc, CBC)
     55     PROV_CIPHER_HW_idea_mode(ofb64, OFB)
     56         PROV_CIPHER_HW_idea_mode(cfb64, CFB)
     57 /*
     58  * IDEA_ecb_encrypt() does not have a enc parameter  - so we create a macro
     59  * that ignores this parameter when IMPLEMENT_CIPHER_HW_ecb() is called.
     60  */
     61 #define IDEA2_ecb_encrypt(in, out, ks, enc) IDEA_ecb_encrypt(in, out, ks)
     62 
     63             PROV_CIPHER_HW_idea_mode_ex(ecb, ECB, IDEA2_ecb)
     64