Security/libsecurity_apple_csp/lib/RSA_DSA_utils.h

   1 /*
   2  * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 /*
  20  * RSA_DSA_utils.h
  21  */
  22 #ifndef _RSA_DSA_UTILS_H_
  23 #define _RSA_DSA_UTILS_H_
  24
  25 #include <openssl/rsa.h>
  26 #include <openssl/dsa.h>
  27 #include <AppleCSPSession.h>
  28 #include <security_cdsa_utilities/context.h>
  29
  30 #ifdef  __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 uint32 rsaMaxKeySize();
  35 uint32 rsaMaxPubExponentSize();
  36
  37 /*
  38  * Given a Context:
  39  * -- obtain CSSM key (there must only be one)
  40  * -- validate keyClass
  41  * -- validate keyUsage
  42  * -- convert to RSA *, allocating the RSA key if necessary
  43  */
  44 RSA *contextToRsaKey(
  45         const Context           &context,
  46         AppleCSPSession         &session,
  47         CSSM_KEYCLASS           keyClass,         // CSSM_KEYCLASS_{PUBLIC,PRIVATE}_KEY
  48         CSSM_KEYUSE                     usage,            // CSSM_KEYUSE_ENCRYPT, CSSM_KEYUSE_SIGN, etc.
  49         bool                            &mallocdKey,  // RETURNED
  50         CSSM_DATA                       &label);          // mallocd and RETURNED for OAEP
  51
  52 /*
  53  * Convert a CssmKey to an RSA * key. May result in the creation of a new
  54  * RSA (when cssmKey is a raw key); allocdKey is true in that case
  55  * in which case the caller generally has to free the allocd key).
  56  */
  57 RSA *cssmKeyToRsa(
  58         const CssmKey   &cssmKey,
  59         AppleCSPSession &session,
  60         bool                    &allocdKey,             // RETURNED
  61         CSSM_DATA               &label);                // mallocd and RETURNED for OAEP
  62
  63 /*
  64  * Convert a raw CssmKey to a newly alloc'd RSA *.
  65  */
  66 RSA *rawCssmKeyToRsa(
  67         const CssmKey   &cssmKey,
  68         CSSM_DATA               &label);                // mallocd and RETURNED for OAEP keys
  69
  70 /*
  71  * Given a partially formed DSA public key (with no p, q, or g) and a
  72  * CssmKey representing a supposedly fully-formed DSA key, populate
  73  * the public key's p, g, and q with values from the fully formed key.
  74  */
  75 CSSM_RETURN dsaGetParamsFromKey(
  76         DSA                     *partialKey,
  77         const CssmKey   &paramKey,
  78         AppleCSPSession &session);
  79
  80 /*
  81  * Given a Context:
  82  * -- obtain CSSM key (there must only be one)
  83  * -- validate keyClass
  84  * -- validate keyUsage
  85  * -- convert to DSA *, allocating the DSA key if necessary
  86  */
  87 DSA *contextToDsaKey(
  88         const Context           &context,
  89         AppleCSPSession         &session,
  90         CSSM_KEYCLASS           keyClass,         // CSSM_KEYCLASS_{PUBLIC,PRIVATE}_KEY
  91         CSSM_KEYUSE                     usage,            // CSSM_KEYUSE_ENCRYPT, CSSM_KEYUSE_SIGN, etc.
  92         bool                            &mallocdKey); // RETURNED
  93
  94 /*
  95  * Convert a CssmKey to an DSA * key. May result in the creation of a new
  96  * DSA (when cssmKey is a raw key); allocdKey is true in that case
  97  * in which case the caller generally has to free the allocd key).
  98  */
  99 DSA *cssmKeyToDsa(
 100         const CssmKey   &cssmKey,
 101         AppleCSPSession &session,
 102         bool                    &allocdKey);    // RETURNED
 103
 104 /*
 105  * Convert a raw CssmKey to a newly alloc'd DSA *.
 106  */
 107 DSA *rawCssmKeyToDsa(
 108         const CssmKey   &cssmKey,
 109         AppleCSPSession &session,
 110         const CssmKey   *paramKey);             // optional
 111
 112 /*
 113  * Given a DSA private key, calculate its public component if it
 114  * doesn't already exist. Used for calculating the key digest of
 115  * an incoming raw private key.
 116  */
 117 void dsaKeyPrivToPub(
 118         DSA *dsaKey);
 119
 120 #ifdef  __cplusplus
 121 }
 122 #endif
 123
 124 #endif  /*_RSA_DSA_UTILS_H_ */