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d2i_pu.c 4.7 KB

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  1. /* crypto/asn1/d2i_pu.c */
  2. /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  3. * All rights reserved.
  4. *
  5. * This package is an SSL implementation written
  6. * by Eric Young (eay@cryptsoft.com).
  7. * The implementation was written so as to conform with Netscapes SSL.
  8. *
  9. * This library is free for commercial and non-commercial use as long as
  10. * the following conditions are aheared to. The following conditions
  11. * apply to all code found in this distribution, be it the RC4, RSA,
  12. * lhash, DES, etc., code; not just the SSL code. The SSL documentation
  13. * included with this distribution is covered by the same copyright terms
  14. * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15. *
  16. * Copyright remains Eric Young's, and as such any Copyright notices in
  17. * the code are not to be removed.
  18. * If this package is used in a product, Eric Young should be given attribution
  19. * as the author of the parts of the library used.
  20. * This can be in the form of a textual message at program startup or
  21. * in documentation (online or textual) provided with the package.
  22. *
  23. * Redistribution and use in source and binary forms, with or without
  24. * modification, are permitted provided that the following conditions
  25. * are met:
  26. * 1. Redistributions of source code must retain the copyright
  27. * notice, this list of conditions and the following disclaimer.
  28. * 2. Redistributions in binary form must reproduce the above copyright
  29. * notice, this list of conditions and the following disclaimer in the
  30. * documentation and/or other materials provided with the distribution.
  31. * 3. All advertising materials mentioning features or use of this software
  32. * must display the following acknowledgement:
  33. * "This product includes cryptographic software written by
  34. * Eric Young (eay@cryptsoft.com)"
  35. * The word 'cryptographic' can be left out if the rouines from the library
  36. * being used are not cryptographic related :-).
  37. * 4. If you include any Windows specific code (or a derivative thereof) from
  38. * the apps directory (application code) you must include an acknowledgement:
  39. * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40. *
  41. * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44. * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51. * SUCH DAMAGE.
  52. *
  53. * The licence and distribution terms for any publically available version or
  54. * derivative of this code cannot be changed. i.e. this code cannot simply be
  55. * copied and put under another distribution licence
  56. * [including the GNU Public Licence.]
  57. */
  58. #include <stdio.h>
  59. #include "cryptlib.h"
  60. #include <openssl/bn.h>
  61. #include <openssl/evp.h>
  62. #include <openssl/objects.h>
  63. #include <openssl/asn1.h>
  64. #ifndef OPENSSL_NO_RSA
  65. #include <openssl/rsa.h>
  66. #endif
  67. #ifndef OPENSSL_NO_DSA
  68. #include <openssl/dsa.h>
  69. #endif
  70. #ifndef OPENSSL_NO_EC
  71. #include <openssl/ec.h>
  72. #endif
  73. EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **a, const unsigned char **pp,
  74. long length)
  75. {
  76. EVP_PKEY *ret;
  77. if ((a == NULL) || (*a == NULL))
  78. {
  79. if ((ret=EVP_PKEY_new()) == NULL)
  80. {
  81. ASN1err(ASN1_F_D2I_PUBLICKEY,ERR_R_EVP_LIB);
  82. return(NULL);
  83. }
  84. }
  85. else ret= *a;
  86. ret->save_type=type;
  87. ret->type=EVP_PKEY_type(type);
  88. switch (ret->type)
  89. {
  90. #ifndef OPENSSL_NO_RSA
  91. case EVP_PKEY_RSA:
  92. if ((ret->pkey.rsa=d2i_RSAPublicKey(NULL,
  93. (const unsigned char **)pp,length)) == NULL) /* TMP UGLY CAST */
  94. {
  95. ASN1err(ASN1_F_D2I_PUBLICKEY,ERR_R_ASN1_LIB);
  96. goto err;
  97. }
  98. break;
  99. #endif
  100. #ifndef OPENSSL_NO_DSA
  101. case EVP_PKEY_DSA:
  102. if (!d2i_DSAPublicKey(&(ret->pkey.dsa),
  103. (const unsigned char **)pp,length)) /* TMP UGLY CAST */
  104. {
  105. ASN1err(ASN1_F_D2I_PUBLICKEY,ERR_R_ASN1_LIB);
  106. goto err;
  107. }
  108. break;
  109. #endif
  110. #ifndef OPENSSL_NO_EC
  111. case EVP_PKEY_EC:
  112. if (!o2i_ECPublicKey(&(ret->pkey.ec),
  113. (const unsigned char **)pp, length))
  114. {
  115. ASN1err(ASN1_F_D2I_PUBLICKEY, ERR_R_ASN1_LIB);
  116. goto err;
  117. }
  118. break;
  119. #endif
  120. default:
  121. ASN1err(ASN1_F_D2I_PUBLICKEY,ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);
  122. goto err;
  123. /* break; */
  124. }
  125. if (a != NULL) (*a)=ret;
  126. return(ret);
  127. err:
  128. if ((ret != NULL) && ((a == NULL) || (*a != ret))) EVP_PKEY_free(ret);
  129. return(NULL);
  130. }