Security-57031.1.35.tar.gz

[apple/security.git] / Security / libsecurity_apple_csp / lib / RSA_asymmetric.h

diff --git a/Security/libsecurity_apple_csp/lib/RSA_asymmetric.h b/Security/libsecurity_apple_csp/lib/RSA_asymmetric.h
new file mode 100644 (file)
index 0000000..92950ba
--- /dev/null
+++ b/Security/libsecurity_apple_csp/lib/RSA_asymmetric.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2000-2001,2011,2014 Apple 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_asymmetric.h - CSPContext for RSA asymmetric encryption
+ */
+
+#ifndef _RSA_ASYMMETRIC_H_
+#define _RSA_ASYMMETRIC_H_
+
+#include <security_cdsa_plugin/CSPsession.h>
+#include <AppleCSP.h>
+#include <AppleCSPContext.h>
+#include <AppleCSPSession.h>
+#include <BlockCryptor.h>
+#include <openssl/rsa.h>
+
+#define RSA_ASYM_PADDING_DEFAULT               RSA_PKCS1_PADDING
+
+class RSA_CryptContext : public BlockCryptor {
+public:
+       RSA_CryptContext(AppleCSPSession &session) :
+               BlockCryptor(session),
+               mRsaKey(NULL),
+               mAllocdRsaKey(false),
+               mInitFlag(false),
+               mPadding(RSA_ASYM_PADDING_DEFAULT),
+               mOaep(false),
+               mLabel(Allocator::standard())   { }
+               
+       ~RSA_CryptContext();
+       
+       /* called by CSPFullPluginSession */
+       void init(const Context &context, bool encoding = true);
+
+       /* called by BlockCryptor */
+       void encryptBlock(
+               const void              *plainText,                     // length implied (one block)
+               size_t                  plainTextLen,
+               void                    *cipherText,    
+               size_t                  &cipherTextLen,         // in/out, throws on overflow
+               bool                    final);
+       void decryptBlock(
+               const void              *cipherText,            // length implied (one cipher block)
+               size_t                  cipherTextLen,
+               void                    *plainText,     
+               size_t                  &plainTextLen,          // in/out, throws on overflow
+               bool                    final);
+
+       size_t outputSize(
+               bool                    final,                          // ignored
+               size_t                  inSize = 0);            // output for given input size
+
+private:
+               RSA                             *mRsaKey;
+               bool                    mAllocdRsaKey;
+               bool                    mInitFlag;                      // allows easy reuse
+               int                             mPadding;                       // RSA_NO_PADDING, RSA_PKCS1_PADDING,
+                                                                                       //    RSA_SSLV23_PADDING
+
+               /* 
+                * optional fields for OEAP keys 
+                * (mKeyHeader.AlgorithmId == CSSM_ALGMODE_PKCS1_EME_OAEP) 
+                */
+               bool                                    mOaep;
+               CssmAutoData                    mLabel;
+               
+};     /* RSA_CryptContext */
+
+
+#endif // _RSA_ASYMMETRIC_H_