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[apple/security.git] / libsecurity_apple_csp / lib / RSA_DSA_csp.cpp
diff --git a/libsecurity_apple_csp/lib/RSA_DSA_csp.cpp b/libsecurity_apple_csp/lib/RSA_DSA_csp.cpp
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+/*
+ * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
+ * 
+ * The contents of this file constitute Original Code as defined in and are
+ * subject to the Apple Public Source License Version 1.2 (the 'License').
+ * You may not use this file except in compliance with the License. Please obtain
+ * a copy of the License at http://www.apple.com/publicsource and read it before
+ * using this file.
+ * 
+ * This Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
+ * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
+ * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
+ * specific language governing rights and limitations under the License.
+ */
+
+
+/*
+ * RSA_DSA_csp.cpp - Algorithm factory for RSA/DSA 
+ */
+#include "RSA_DSA_csp.h"
+#include "RSA_DSA_signature.h"                                 /* raw signer */
+#include <SHA1_MD5_Object.h>           /* raw digest */
+#include <SignatureContext.h>
+#include <security_cdsa_utilities/digestobject.h>
+#include "RSA_DSA_keys.h"
+#include "RSA_asymmetric.h"
+#include <MD2Object.h>
+#include <SHA2_Object.h>
+#include <Security/cssmapple.h>
+
+#define OPENSSL_DSA_ENABLE     1
+
+Allocator *RSA_DSA_Factory::normAllocator;
+Allocator *RSA_DSA_Factory::privAllocator;
+
+/* normally found in crypto.h, which has way too much useless cruft....move these to
+ * a local header.... */
+extern "C" {
+extern int CRYPTO_set_mem_functions(
+       void *(*m)(size_t),
+       void *(*r)(void *,size_t), 
+       void (*f)(void *));
+int CRYPTO_set_locked_mem_functions(
+       void *(*m)(size_t), 
+       void (*free_func)(void *));
+}
+
+/*
+ * openssl-style memory allocator callbacks
+ */
+static void *osMalloc(size_t size)
+{
+       return RSA_DSA_Factory::privAllocator->malloc(size);
+}
+static void osFree(void *data)
+{
+       RSA_DSA_Factory::privAllocator->free(data);
+}
+static void *osRealloc(void *oldPtr, size_t newSize)
+{
+       return RSA_DSA_Factory::privAllocator->realloc(oldPtr, newSize);
+}
+
+RSA_DSA_Factory::RSA_DSA_Factory(Allocator *normAlloc, Allocator *privAlloc)
+{
+       setNormAllocator(normAlloc);
+       setPrivAllocator(privAlloc);
+       /* once-per-address space */
+       CRYPTO_set_mem_functions(osMalloc, osRealloc, osFree);
+       CRYPTO_set_locked_mem_functions(osMalloc, osFree);
+       /* these should go in a lib somewhere */
+       ERR_load_RSA_strings();
+       ERR_load_BN_strings();
+       ERR_load_DSA_strings();
+}
+
+RSA_DSA_Factory::~RSA_DSA_Factory()
+{
+       // TBD terminateCryptKit();
+}
+
+bool RSA_DSA_Factory::setup(
+       AppleCSPSession &session,       
+       CSPFullPluginSession::CSPContext * &cspCtx, 
+       const Context &context)
+{
+       switch(context.type()) {
+               case CSSM_ALGCLASS_SIGNATURE:
+                       switch(context.algorithm()) {
+                               case CSSM_ALGID_SHA1WithRSA:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new SignatureContext(session,
+                                                       *(new SHA1Object()),
+                                                       *(new RSASigner(*privAllocator, 
+                                                               session,
+                                                               CSSM_ALGID_SHA1)));
+                                       }
+                                       return true;
+                               case CSSM_ALGID_MD5WithRSA:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new SignatureContext(session,
+                                                       *(new MD5Object()),
+                                                       *(new RSASigner(*privAllocator, 
+                                                               session,
+                                                               CSSM_ALGID_MD5)));
+                                       }
+                                       return true;
+                               case CSSM_ALGID_MD2WithRSA:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new SignatureContext(session,
+                                                       *(new MD2Object()),
+                                                       *(new RSASigner(*privAllocator, 
+                                                               session,
+                                                               CSSM_ALGID_MD2)));
+                                       }
+                                       return true;
+                               #if     OPENSSL_DSA_ENABLE
+                               case CSSM_ALGID_SHA1WithDSA:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new SignatureContext(session,
+                                                       *(new SHA1Object()),
+                                                       *(new DSASigner(*privAllocator, 
+                                                               session,
+                                                               CSSM_ALGID_SHA1)));
+                                       }
+                                       return true;
+                               case CSSM_ALGID_DSA:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new SignatureContext(session,
+                                                       *(new NullDigest()),
+                                                       *(new DSASigner(*privAllocator, 
+                                                               session,
+                                                               // set later via setDigestAlgorithm but not used by DSA
+                                                               CSSM_ALGID_NONE)));     
+                                       }
+                                       return true;
+                               #endif
+                               case CSSM_ALGID_RSA:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new SignatureContext(session,
+                                                       *(new NullDigest()),
+                                                       *(new RSASigner(*privAllocator, 
+                                                               session,
+                                                               // set later via setDigestAlgorithm
+                                                               CSSM_ALGID_NONE)));     
+                                       }
+                                       return true;
+                               case CSSM_ALGID_SHA256WithRSA:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new SignatureContext(session,
+                                                       *(new SHA256Object()),
+                                                       *(new RSASigner(*privAllocator, 
+                                                               session,
+                                                               CSSM_ALGID_SHA256)));
+                                       }
+                                       return true;
+                               case CSSM_ALGID_SHA224WithRSA:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new SignatureContext(session,
+                                                       *(new SHA224Object()),
+                                                       *(new RSASigner(*privAllocator, 
+                                                               session,
+                                                               CSSM_ALGID_SHA224)));
+                                       }
+                                       return true;
+                               case CSSM_ALGID_SHA384WithRSA:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new SignatureContext(session,
+                                                       *(new SHA384Object()),
+                                                       *(new RSASigner(*privAllocator, 
+                                                               session,
+                                                               CSSM_ALGID_SHA384)));
+                                       }
+                                       return true;
+                               case CSSM_ALGID_SHA512WithRSA:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new SignatureContext(session,
+                                                       *(new SHA512Object()),
+                                                       *(new RSASigner(*privAllocator, 
+                                                               session,
+                                                               CSSM_ALGID_SHA512)));
+                                       }
+                                       return true;
+                               default:
+                                       break;
+                       }
+                       break;          
+               
+               case CSSM_ALGCLASS_KEYGEN:
+                       switch(context.algorithm()) {
+                               case CSSM_ALGID_RSA:
+                               case CSSM_ALGMODE_PKCS1_EME_OAEP:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new RSAKeyPairGenContext(session, context);
+                                       }
+                                       return true;
+                               #if     OPENSSL_DSA_ENABLE
+                               case CSSM_ALGID_DSA:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new DSAKeyPairGenContext(session, context);
+                                       }
+                                       return true;
+                               #endif
+                               default:
+                                       break;
+                       }
+                       break;          
+
+               case CSSM_ALGCLASS_ASYMMETRIC:
+                       switch(context.algorithm()) {
+                               case CSSM_ALGID_RSA:
+                               case CSSM_ALGMODE_PKCS1_EME_OAEP:
+                                       if(cspCtx == NULL) {
+                                               cspCtx = new RSA_CryptContext(session);
+                                       }
+                                       return true;
+                               default:
+                                       break;
+                       }
+                       break;          
+               
+               /* more here - symmetric, etc. */
+               default:
+                       break;
+       }
+       /* not implemented here */
+       return false;
+}
+
+
+