X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/5dd5f9ec28f304ca377c42fd7f711d6cf12b90e1..5c19dc3ae3bd8e40a9c028b0deddd50ff337692c:/OSX/libsecurity_apple_csp/lib/RSA_DSA_utils.h

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+/*
+ * 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_DSA_utils.h
+ */
+#ifndef	_RSA_DSA_UTILS_H_
+#define _RSA_DSA_UTILS_H_
+
+#include <openssl/rsa.h>
+#include <openssl/dsa.h>
+#include <AppleCSPSession.h>
+#include <security_cdsa_utilities/context.h>
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+uint32 rsaMaxKeySize();
+uint32 rsaMaxPubExponentSize();
+
+/* 
+ * Given a Context:
+ * -- obtain CSSM key (there must only be one)
+ * -- validate keyClass
+ * -- validate keyUsage
+ * -- convert to RSA *, allocating the RSA key if necessary
+ */
+RSA *contextToRsaKey(
+	const Context 		&context,
+	AppleCSPSession	 	&session,
+	CSSM_KEYCLASS		keyClass,	  // CSSM_KEYCLASS_{PUBLIC,PRIVATE}_KEY
+	CSSM_KEYUSE			usage,		  // CSSM_KEYUSE_ENCRYPT, CSSM_KEYUSE_SIGN, etc.
+	bool				&mallocdKey,  // RETURNED
+	CSSM_DATA			&label);	  // mallocd and RETURNED for OAEP
+
+/* 
+ * Convert a CssmKey to an RSA * key. May result in the creation of a new
+ * RSA (when cssmKey is a raw key); allocdKey is true in that case
+ * in which case the caller generally has to free the allocd key).
+ */
+RSA *cssmKeyToRsa(
+	const CssmKey	&cssmKey,
+	AppleCSPSession	&session,
+	bool			&allocdKey,		// RETURNED
+	CSSM_DATA		&label);		// mallocd and RETURNED for OAEP
+
+/* 
+ * Convert a raw CssmKey to a newly alloc'd RSA *.
+ */
+RSA *rawCssmKeyToRsa(
+	const CssmKey	&cssmKey,
+	CSSM_DATA		&label);		// mallocd and RETURNED for OAEP keys
+
+/*
+ * Given a partially formed DSA public key (with no p, q, or g) and a 
+ * CssmKey representing a supposedly fully-formed DSA key, populate
+ * the public key's p, g, and q with values from the fully formed key.
+ */
+CSSM_RETURN dsaGetParamsFromKey(
+	DSA 			*partialKey,
+	const CssmKey	&paramKey,
+	AppleCSPSession	&session);
+
+/* 
+ * Given a Context:
+ * -- obtain CSSM key (there must only be one)
+ * -- validate keyClass
+ * -- validate keyUsage
+ * -- convert to DSA *, allocating the DSA key if necessary
+ */
+DSA *contextToDsaKey(
+	const Context 		&context,
+	AppleCSPSession	 	&session,
+	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 an DSA * key. May result in the creation of a new
+ * DSA (when cssmKey is a raw key); allocdKey is true in that case
+ * in which case the caller generally has to free the allocd key).
+ */
+DSA *cssmKeyToDsa(
+	const CssmKey	&cssmKey,
+	AppleCSPSession	&session,
+	bool			&allocdKey);	// RETURNED
+
+/* 
+ * Convert a raw CssmKey to a newly alloc'd DSA *.
+ */
+DSA *rawCssmKeyToDsa(
+	const CssmKey	&cssmKey,
+	AppleCSPSession	&session,
+	const CssmKey	*paramKey);		// optional
+
+/*
+ * Given a DSA private key, calculate its public component if it 
+ * doesn't already exist. Used for calculating the key digest of 
+ * an incoming raw private key.
+ */
+void dsaKeyPrivToPub(
+	DSA *dsaKey);
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif	/*_RSA_DSA_UTILS_H_ */