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e_cast.c 1.4 KB

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  1. /*
  2. * Copyright 1995-2021 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. * CAST low level APIs are deprecated for public use, but still ok for
  11. * internal use.
  12. */
  13. #include "internal/deprecated.h"
  14. #include <stdio.h>
  15. #include "internal/cryptlib.h"
  16. #ifndef OPENSSL_NO_CAST
  17. # include <openssl/evp.h>
  18. # include <openssl/objects.h>
  19. # include "crypto/evp.h"
  20. # include <openssl/cast.h>
  21. # include "evp_local.h"
  22. static int cast_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
  23. const unsigned char *iv, int enc);
  24. typedef struct {
  25. CAST_KEY ks;
  26. } EVP_CAST_KEY;
  27. # define data(ctx) EVP_C_DATA(EVP_CAST_KEY,ctx)
  28. IMPLEMENT_BLOCK_CIPHER(cast5, ks, CAST, EVP_CAST_KEY,
  29. NID_cast5, 8, CAST_KEY_LENGTH, 8, 64,
  30. EVP_CIPH_VARIABLE_LENGTH, cast_init_key, NULL,
  31. EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, NULL)
  32. static int cast_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
  33. const unsigned char *iv, int enc)
  34. {
  35. int keylen = EVP_CIPHER_CTX_get_key_length(ctx);
  36. if (keylen <= 0)
  37. return 0;
  38. CAST_set_key(&data(ctx)->ks, keylen, key);
  39. return 1;
  40. }
  41. #endif