X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/72a12576750f52947eb043106ba5c12c0d07decf..b1ab9ed8d0e0f1c3b66d7daa8fd5564444c56195:/libsecurity_apple_csp/lib/FEECSPUtils.h

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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.
+ */
+
+
+/*
+ * FEECSPUtils.h - Misc. utility function for FEE/CryptKit CSP. 
+ *
+ * Created 2/20/2001 by dmitch.
+ */
+
+#ifdef	CRYPTKIT_CSP_ENABLE
+ 
+#ifndef	_FEE_CSP_UTILS_H_
+#define _FEE_CSP_UTILS_H_
+
+#include "AppleCSPSession.h"
+#include <security_cryptkit/feeTypes.h>
+#include <security_cdsa_utilities/context.h>
+
+/*
+ * Default FEE keyblob format, indicating DER-encoding.
+ * FEE keys can optionally be generated by requesting 
+ * CSSM_KEYBLOB_RAW_FORMAT_OCTET_STRING, indicating native FEE key blobs.
+ */
+#define FEE_KEYBLOB_DEFAULT_FORMAT	CSSM_KEYBLOB_RAW_FORMAT_NONE
+
+namespace CryptKit {
+
+/* Given a FEE error, throw appropriate CssmError */
+void throwCryptKit(
+	feeReturn 	frtn, 
+	const char	*op);		/* optional */
+
+/* 
+ * Given a Context:
+ * -- obtain CSSM key of specified CSSM_ATTRIBUTE_TYPE
+ * -- validate keyClass
+ * -- validate keyUsage
+ * -- convert to feePubKey, allocating the feePubKey if necessary
+ */
+feePubKey contextToFeeKey(
+	const Context 		&context,
+	AppleCSPSession	 	&session,
+	CSSM_ATTRIBUTE_TYPE	attrType,	  // CSSM_ATTRIBUTE_KEY, CSSM_ATTRIBUTE_PUBLIC_KEY
+	CSSM_KEYCLASS		keyClass,	  // CSSM_KEYCLASS_{PUBLIC,PRIVATE}_KEY
+	CSSM_KEYUSE			usage,		  // CSSM_KEYUSE_ENCRYPT, CSSM_KEYUSE_SIGN, etc.
+	bool				&mallocdKey); // RETURNED
+
+/* 
+ * Convert a CssmKey to a feePubKey. May result in the creation of a new
+ * feePubKey (when cssmKey is a raw key); allocdKey is true in that case
+ * in which case the caller generally has to free the allocd key).
+ */
+feePubKey cssmKeyToFee(
+	const CssmKey	&cssmKey,
+	AppleCSPSession	&session,
+	bool			&allocdKey);	// RETURNED
+
+/* 
+ * Convert a raw CssmKey to a newly alloc'd feePubKey.
+ */
+feePubKey rawCssmKeyToFee(
+	const CssmKey	&cssmKey);
+
+/*
+ * Glue function which allows C code to use AppleCSPSession 
+ * as an RNG. A ptr to this function gets passed down to 
+ * CryptKit C functions as a feeRandFcn.
+ */
+feeReturn feeRandCallback(
+	void 			*ref,		// actually an AppleCSPSession *
+	unsigned char 	*bytes,		// must be alloc'd by caller 
+	unsigned 		numBytes);
+
+} /* namespace CryptKit */
+
+#endif	/* _FEE_CSP_UTILS_H_ */
+#endif	/* CRYPTKIT_CSP_ENABLE */