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cipher_idea_hw.c 2.5 KB

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