--- /dev/null
+/*
+ * 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.
+ */
+
+
+/*
+ * FEEAsymmetricContext.h - CSPContexts for FEE asymmetric encryption
+ *
+ */
+
+#ifdef CRYPTKIT_CSP_ENABLE
+
+#ifndef _FEE_ASYMMETRIC_CONTEXT_H_
+#define _FEE_ASYMMETRIC_CONTEXT_H_
+
+#include <security_cdsa_plugin/CSPsession.h>
+#include "AppleCSP.h"
+#include "AppleCSPContext.h"
+#include "AppleCSPSession.h"
+#include "BlockCryptor.h"
+#include <security_cryptkit/feeFEED.h>
+#include <security_cryptkit/feeFEEDExp.h>
+
+namespace CryptKit {
+
+class FEEDContext : public BlockCryptor {
+public:
+ FEEDContext(AppleCSPSession &session) :
+ BlockCryptor(session),
+ mFeeFeed(NULL),
+ mPrivKey(NULL),
+ mPubKey(NULL),
+ mInitFlag(false) { }
+ ~FEEDContext();
+
+ /* 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);
+
+ /*
+ * Additional query size support, necessary because we don't conform to
+ * BlockCryptor's standard one-to-one block scheme
+ */
+ size_t inputSize(
+ size_t outSize); // input for given output size
+ size_t outputSize(
+ bool final = false,
+ size_t inSize = 0); // output for given input size
+ void minimumProgress(
+ size_t &in,
+ size_t &out); // minimum progress chunks
+
+
+private:
+ feeFEED mFeeFeed;
+ feePubKey mPrivKey;
+ bool mAllocdPrivKey;
+ feePubKey mPubKey;
+ bool mAllocdPubKey;
+ bool mInitFlag; // allows easy reuse
+}; /* FEEDContext */
+
+
+class FEEDExpContext : public BlockCryptor {
+public:
+ FEEDExpContext(AppleCSPSession &session) :
+ BlockCryptor(session),
+ mFeeFeedExp(NULL),
+ mFeeKey(NULL),
+ mInitFlag(false) { }
+
+ ~FEEDExpContext();
+
+ /* 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);
+
+private:
+ feeFEEDExp mFeeFeedExp;
+ feePubKey mFeeKey;
+ bool mAllocdFeeKey;
+ bool mInitFlag; // allows easy reuse
+}; /* FEEDExpContext */
+
+/*
+ * Elliptic curve Diffie-Hellman key exchange. The public key is
+ * specified in one of two ways - a raw X9.62 format public key
+ * string in Param, or a CSSM_KEY in the Context.
+ * Requested size, in keyData->Length, must be the same size as
+ * the keys' modulus. Data is returned in keyData->Data, which is
+ * allocated by the caller.
+ * Optionally performs X9.63 key derivation if algId ==
+ * CSSM_ALGID_ECDH_X963_KDF, with the optional SharedInfo passed
+ * as optional context attribute CSSM_ATTRIBUTE_SALT.
+ */
+extern void DeriveKey_ECDH (
+ const Context &context,
+ CSSM_ALGORITHMS algId,
+ const CssmData &Param,
+ CSSM_DATA *keyData,
+ AppleCSPSession &session);
+
+} /* namespace CryptKit */
+
+#endif /* _FEE_ASYMMETRIC_CONTEXT_H_ */
+#endif /* CRYPTKIT_CSP_ENABLE */
projects / apple / security.git / blobdiff