p8_pkey.c 5.0 KB

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  1. /* p8_pkey.c */
  2. /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
  3. * project 1999.
  4. */
  5. /* ====================================================================
  6. * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
  7. *
  8. * Redistribution and use in source and binary forms, with or without
  9. * modification, are permitted provided that the following conditions
  10. * are met:
  11. *
  12. * 1. Redistributions of source code must retain the above copyright
  13. * notice, this list of conditions and the following disclaimer.
  14. *
  15. * 2. Redistributions in binary form must reproduce the above copyright
  16. * notice, this list of conditions and the following disclaimer in
  17. * the documentation and/or other materials provided with the
  18. * distribution.
  19. *
  20. * 3. All advertising materials mentioning features or use of this
  21. * software must display the following acknowledgment:
  22. * "This product includes software developed by the OpenSSL Project
  23. * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24. *
  25. * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26. * endorse or promote products derived from this software without
  27. * prior written permission. For written permission, please contact
  28. * licensing@OpenSSL.org.
  29. *
  30. * 5. Products derived from this software may not be called "OpenSSL"
  31. * nor may "OpenSSL" appear in their names without prior written
  32. * permission of the OpenSSL Project.
  33. *
  34. * 6. Redistributions of any form whatsoever must retain the following
  35. * acknowledgment:
  36. * "This product includes software developed by the OpenSSL Project
  37. * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38. *
  39. * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40. * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42. * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43. * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45. * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48. * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49. * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50. * OF THE POSSIBILITY OF SUCH DAMAGE.
  51. * ====================================================================
  52. *
  53. * This product includes cryptographic software written by Eric Young
  54. * (eay@cryptsoft.com). This product includes software written by Tim
  55. * Hudson (tjh@cryptsoft.com).
  56. *
  57. */
  58. #include <stdio.h>
  59. #include "cryptlib.h"
  60. #include <openssl/asn1t.h>
  61. #include <openssl/x509.h>
  62. /* Minor tweak to operation: zero private key data */
  63. static int pkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  64. void *exarg)
  65. {
  66. /* Since the structure must still be valid use ASN1_OP_FREE_PRE */
  67. if(operation == ASN1_OP_FREE_PRE) {
  68. PKCS8_PRIV_KEY_INFO *key = (PKCS8_PRIV_KEY_INFO *)*pval;
  69. if (key->pkey->value.octet_string)
  70. OPENSSL_cleanse(key->pkey->value.octet_string->data,
  71. key->pkey->value.octet_string->length);
  72. }
  73. return 1;
  74. }
  75. ASN1_SEQUENCE_cb(PKCS8_PRIV_KEY_INFO, pkey_cb) = {
  76. ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, version, ASN1_INTEGER),
  77. ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, pkeyalg, X509_ALGOR),
  78. ASN1_SIMPLE(PKCS8_PRIV_KEY_INFO, pkey, ASN1_ANY),
  79. ASN1_IMP_SET_OF_OPT(PKCS8_PRIV_KEY_INFO, attributes, X509_ATTRIBUTE, 0)
  80. } ASN1_SEQUENCE_END_cb(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO)
  81. IMPLEMENT_ASN1_FUNCTIONS(PKCS8_PRIV_KEY_INFO)
  82. int PKCS8_pkey_set0(PKCS8_PRIV_KEY_INFO *priv, ASN1_OBJECT *aobj,
  83. int version,
  84. int ptype, void *pval,
  85. unsigned char *penc, int penclen)
  86. {
  87. unsigned char **ppenc = NULL;
  88. if (version >= 0)
  89. {
  90. if (!ASN1_INTEGER_set(priv->version, version))
  91. return 0;
  92. }
  93. if (penc)
  94. {
  95. int pmtype;
  96. ASN1_OCTET_STRING *oct;
  97. oct = ASN1_OCTET_STRING_new();
  98. if (!oct)
  99. return 0;
  100. oct->data = penc;
  101. ppenc = &oct->data;
  102. oct->length = penclen;
  103. if (priv->broken == PKCS8_NO_OCTET)
  104. pmtype = V_ASN1_SEQUENCE;
  105. else
  106. pmtype = V_ASN1_OCTET_STRING;
  107. ASN1_TYPE_set(priv->pkey, pmtype, oct);
  108. }
  109. if (!X509_ALGOR_set0(priv->pkeyalg, aobj, ptype, pval))
  110. {
  111. /* If call fails do not swallow 'enc' */
  112. if (ppenc)
  113. *ppenc = NULL;
  114. return 0;
  115. }
  116. return 1;
  117. }
  118. int PKCS8_pkey_get0(ASN1_OBJECT **ppkalg,
  119. const unsigned char **pk, int *ppklen,
  120. X509_ALGOR **pa,
  121. PKCS8_PRIV_KEY_INFO *p8)
  122. {
  123. if (ppkalg)
  124. *ppkalg = p8->pkeyalg->algorithm;
  125. if(p8->pkey->type == V_ASN1_OCTET_STRING)
  126. {
  127. p8->broken = PKCS8_OK;
  128. if (pk)
  129. {
  130. *pk = p8->pkey->value.octet_string->data;
  131. *ppklen = p8->pkey->value.octet_string->length;
  132. }
  133. }
  134. else if (p8->pkey->type == V_ASN1_SEQUENCE)
  135. {
  136. p8->broken = PKCS8_NO_OCTET;
  137. if (pk)
  138. {
  139. *pk = p8->pkey->value.sequence->data;
  140. *ppklen = p8->pkey->value.sequence->length;
  141. }
  142. }
  143. else
  144. return 0;
  145. if (pa)
  146. *pa = p8->pkeyalg;
  147. return 1;
  148. }