libsecurity_cssm/lib/oidsalg.c

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 /*
  26  * oidsalg.c - OIDs defining crypto algorithms
  27  */
  28
  29 #include <Security/oidsbase.h>
  30 #include <Security/cssmtype.h>
  31 #include "cssmapple.h"
  32 #include <Security/oidsalg.h>
  33 #include <string.h>
  34
  35 #pragma mark ----- CSSM_OID <--> CSSM_ALGORITHMS -----
  36
  37 typedef struct {
  38         const CSSM_OID  *oid;
  39         CSSM_ALGORITHMS alg;
  40 } OidToAlgEnt;
  41
  42 static const OidToAlgEnt oidToAlgMap[] =
  43 {
  44         {&CSSMOID_RSA, CSSM_ALGID_RSA },
  45         {&CSSMOID_MD2WithRSA, CSSM_ALGID_MD2WithRSA },
  46         {&CSSMOID_MD5WithRSA, CSSM_ALGID_MD5WithRSA },
  47         {&CSSMOID_SHA1WithRSA, CSSM_ALGID_SHA1WithRSA },
  48         {&CSSMOID_SHA1WithRSA_OIW, CSSM_ALGID_SHA1WithRSA },
  49         {&CSSMOID_SHA1, CSSM_ALGID_SHA1},
  50         {&CSSMOID_MD5, CSSM_ALGID_MD5 },
  51         /*
  52          * These OIDs have three variants - one for BSAFE, CMS, and JDK 1.1.
  53          * On the oid-to-alg map, we'll handle either one, mapping to
  54          * the same CSSM alg. When we map from alg to OID, we'll use
  55          * the CMS variant (being first in the list).
  56          */
  57         {&CSSMOID_DSA_CMS, CSSM_ALGID_DSA },
  58         {&CSSMOID_DSA, CSSM_ALGID_DSA },
  59         {&CSSMOID_DSA_JDK, CSSM_ALGID_DSA },
  60         {&CSSMOID_SHA1WithDSA_CMS, CSSM_ALGID_SHA1WithDSA },
  61         {&CSSMOID_SHA1WithDSA, CSSM_ALGID_SHA1WithDSA },
  62         {&CSSMOID_SHA1WithDSA_JDK, CSSM_ALGID_SHA1WithDSA },
  63         /*
  64          * Multiple entries for Diffie-Hellman. We favor the PKCS3 version for
  65          * mapping alg to OID.
  66          */
  67         {&CSSMOID_DH, CSSM_ALGID_DH},
  68         {&CSSMOID_ANSI_DH_PUB_NUMBER, CSSM_ALGID_DH},
  69         {&CSSMOID_ANSI_DH_STATIC, CSSM_ALGID_DH},
  70         {&CSSMOID_ANSI_DH_ONE_FLOW, CSSM_ALGID_DH},
  71         {&CSSMOID_ANSI_DH_EPHEM, CSSM_ALGID_DH},
  72         {&CSSMOID_ANSI_DH_HYBRID1, CSSM_ALGID_DH},
  73         {&CSSMOID_ANSI_DH_HYBRID2, CSSM_ALGID_DH},
  74         {&CSSMOID_ANSI_DH_HYBRID_ONEFLOW, CSSM_ALGID_DH},
  75         {&CSSMOID_APPLE_FEE, CSSM_ALGID_FEE },
  76         {&CSSMOID_APPLE_ASC, CSSM_ALGID_ASC },
  77         {&CSSMOID_APPLE_FEE_MD5, CSSM_ALGID_FEE_MD5 },
  78         {&CSSMOID_APPLE_FEE_SHA1, CSSM_ALGID_FEE_SHA1 },
  79         {&CSSMOID_APPLE_FEED, CSSM_ALGID_FEED },
  80         {&CSSMOID_APPLE_FEEDEXP, CSSM_ALGID_FEEDEXP },
  81         /* the current valid alg --> OID mapping */
  82         {&CSSMOID_ECDSA_WithSHA1, CSSM_ALGID_SHA1WithECDSA},
  83         /* for backwards compatibility */
  84         {&CSSMOID_APPLE_ECDSA, CSSM_ALGID_SHA1WithECDSA },
  85         {&CSSMOID_SHA224, CSSM_ALGID_SHA224},
  86         {&CSSMOID_SHA256, CSSM_ALGID_SHA256},
  87         {&CSSMOID_SHA384, CSSM_ALGID_SHA384},
  88         {&CSSMOID_SHA512, CSSM_ALGID_SHA512},
  89         {&CSSMOID_SHA224WithRSA, CSSM_ALGID_SHA224WithRSA },
  90         {&CSSMOID_SHA256WithRSA, CSSM_ALGID_SHA256WithRSA },
  91         {&CSSMOID_SHA384WithRSA, CSSM_ALGID_SHA384WithRSA },
  92         {&CSSMOID_SHA512WithRSA, CSSM_ALGID_SHA512WithRSA },
  93         {&CSSMOID_RSAWithOAEP, CSSM_ALGMODE_PKCS1_EME_OAEP },
  94         {&CSSMOID_ECDSA_WithSHA224, CSSM_ALGID_SHA224WithECDSA },
  95         {&CSSMOID_ECDSA_WithSHA256, CSSM_ALGID_SHA256WithECDSA },
  96         {&CSSMOID_ECDSA_WithSHA384, CSSM_ALGID_SHA384WithECDSA },
  97         {&CSSMOID_ECDSA_WithSHA512, CSSM_ALGID_SHA512WithECDSA },
  98         /* AlgId.algorithm for ECDSA public key */
  99         {&CSSMOID_ecPublicKey, CSSM_ALGID_ECDSA },
 100         /* This OID is accompanied by an additional digest OID in AlgId.parameters */
 101         {&CSSMOID_ECDSA_WithSpecified, CSSM_ALGID_ECDSA_SPECIFIED },
 102         {NULL, 0}
 103 };
 104
 105 #define NUM_OID_TO_ALGS (sizeof(oidToAlgMap) / sizeof(oidToAlgMap[0]))
 106
 107 /*
 108  * Compare two CSSM_DATAs (or two CSSM_OIDs), return true if identical.
 109  */
 110 static bool compareCssmData(
 111         const CSSM_DATA *data1,
 112         const CSSM_DATA *data2)
 113 {
 114         if((data1 == NULL) || (data1->Data == NULL) ||
 115            (data2 == NULL) || (data2->Data == NULL) ||
 116            (data1->Length != data2->Length)) {
 117                 return false;
 118         }
 119         if(data1->Length != data2->Length) {
 120                 return false;
 121         }
 122         if(memcmp(data1->Data, data2->Data, data1->Length) == 0) {
 123                 return true;
 124         }
 125         else {
 126                 return false;
 127         }
 128 }
 129
 130 bool cssmOidToAlg(
 131         const CSSM_OID *oid,
 132         CSSM_ALGORITHMS *alg)           // RETURNED
 133 {
 134         const OidToAlgEnt *ent;
 135
 136         for(ent=oidToAlgMap; ent->oid; ent++) {
 137                 if(compareCssmData(ent->oid, oid)) {
 138                         *alg = ent->alg;
 139                         return true;
 140                 }
 141         }
 142         return false;
 143 }
 144
 145 const CSSM_OID *cssmAlgToOid(
 146         CSSM_ALGORITHMS algId)
 147 {
 148         const OidToAlgEnt *ent;
 149
 150         for(ent=oidToAlgMap; ent->oid; ent++) {
 151                 if(ent->alg == algId) {
 152                         return ent->oid;
 153                 }
 154         }
 155         return NULL;
 156 }
 157
 158