X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/80e2389990082500d76eb566d4946be3e786c3ef..d8f41ccd20de16f8ebe2ccc84d47bf1cb2b26bbb:/libsecurity_apple_csp/lib/pbkdf2.h

diff --git a/libsecurity_apple_csp/lib/pbkdf2.h b/libsecurity_apple_csp/lib/pbkdf2.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.
- */
-
-
-/*
- 	File:		pbkdf2.h
- 	Contains:	Apple Data Security Services PKCS #5 PBKDF2 function declaration.
- 	Copyright:	(C) 1999 by Apple Computer, Inc., all rights reserved
- 	Written by:	Michael Brouwer <mb@apple.com>
-*/
-
-#ifndef __PBKDF2__
-#define __PBKDF2__
-
-#include <Security/cssmconfig.h>
-
-#ifdef	__cplusplus
-extern "C" {
-#endif
-
-/* This function should generate a pseudo random octect stream
-   of hLen bytes long (The value hLen is specified as an argument to pbkdf2
-   and should be constant for any given prf function.) which is output in the buffer
-   pointed to by randomPtr (the caller of this function is responsible for allocation
-   of the buffer).
-   The inputs to the pseudo random function are the first keyLen octets pointed
-   to by keyPtr and the first textLen octets pointed to by textPtr.
-   Both keyLen and textLen can have any nonzero value.
-   A good prf would be a HMAC-SHA-1 algorithm where the keyPtr octets serve as
-   HMAC's "key" and the textPtr octets serve as HMAC's "text".  */
-typedef void (*PRF)(const void *keyPtr, uint32 keyLen,
-					const void *textPtr, uint32 textLen,
-					void *randomPtr);
-
-/* This function implements the PBKDF2 key derrivation algorithm described in
-   http://www.rsa.com/rsalabs/pubs/PKCS/html/pkcs-5.html
-   The output is a derived key of dkLen bytes which is written to the buffer
-   pointed to by dkPtr.
-   The caller should ensure dkPtr is at least dkLen bytes long.
-   The Key is derived from passwordPtr (which is passwordLen bytes long) and from
-   saltPtr (which is saltLen bytes long).  The algorithm used is desacribed in
-   PKCS #5 version 2.0 and iterationCount iterations are performed.
-   The argument prf is a pointer to a psuedo random number generator declared above.
-   It should write exactly hLen bytes into its output buffer each time it is called.
-   The argument tempBuffer should point to a buffer MAX (hLen, saltLen + 4) + 2 * hLen
-   bytes long.  This buffer is used during the calculation for intermediate results.
-   Security Considerations:
-   The argument saltPtr should be a pointer to a buffer of at least 8 random bytes
-   (64 bits).  Thus saltLen should be >= 8.
-   For each session a new salt should be generated.
-   The value of iterationCount should be at least 1000 (one thousand).
-   A good prf would be a HMAC-SHA-1 algorithm where the password serves as
-   HMAC's "key" and the data serves as HMAC's "text".  */
-void pbkdf2 (PRF prf, uint32 hLen,
-			 const void *passwordPtr, uint32 passwordLen,
-			 const void *saltPtr, uint32 saltLen,
-			 uint32 iterationCount,
-			 void *dkPtr, uint32 dkLen,
-			 void *tempBuffer);
-
-#ifdef	__cplusplus
-}
-#endif
-
-#endif /* __PBKDF2__ */