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os/security/crypto/weakcryptospi/source/hash/hash.cpp
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib. 
     1 /*

     2 * Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 * (c) 1999-2003 Symbian Ltd. All rights reserved

    16 *

    17 */

    18 

    19 

    20 /**

    21  @file

    22 */

    23 

    24 #include <e32std.h>

    25 #include <hash.h>

    26 #define EXPANDLOOP

    27 

    28 EXPORT_C CMessageDigest::CMessageDigest(void):CBase()

    29 {}

    30 

    31 EXPORT_C CMessageDigest::CMessageDigest(const CMessageDigest& /*aMD*/):CBase()

    32 {}

    33 

    34 EXPORT_C CMessageDigest::~CMessageDigest(void)

    35 {}

    36 

    37 /* Note that the shifts here are NOT guaranteed to work if s == 0, and it is

    38  * assumed in R() (and hence in all inline) that a is unsigned. */

    39 // CMD_R - rotate a left by n bits; the main bottleneck of the algorithm 

    40 // implementation

    41 /*

    42 C++ version compiles to:

    43 

    44 CMD_R__FUiUi:

    45 	add	r3, r0, #0

    46 	lsl	r3, r3, r1

    47 	mov	r2, #32

    48 	sub	r2, r2, r1

    49 	lsr	r0, r0, r2

    50 	add	r3, r3, r0

    51 	add	r0, r3, #0

    52 	bx	lr

    53 

    54 */

    55 

    56 TInt CMessageDigest::GetExtension(TUint aExtensionId, TAny*& a0, TAny* a1)

    57 	{

    58 	return Extension_(aExtensionId, a0, a1);

    59 	}

    60 

    61 

    62 //////////////////////////////////////////////////////////////////

    63 //	Factory class to create CMessageDigest derived objects

    64 //////////////////////////////////////////////////////////////////

    65 EXPORT_C CMessageDigest* CMessageDigestFactory::NewDigestL(CMessageDigest::THashId aHashId)

    66 {

    67 	CMessageDigest* hash = NULL;

    68 	switch (aHashId)

    69 	{

    70 	case (CMessageDigest::EMD2):

    71 		{

    72 			hash = CMD2::NewL();

    73 			break;

    74 		}

    75 	case (CMessageDigest::EMD5):

    76 		{

    77 			hash = CMD5::NewL();

    78 			break;

    79 		}

    80 	case (CMessageDigest::ESHA1):

    81 		{

    82 			hash = CSHA1::NewL();

    83 			break;

    84 		}

    85 	case (CMessageDigest::EMD4):

    86 		{

    87 			hash = CMD4::NewL();

    88 			break;

    89 		}

    90 	case (CMessageDigest::ESHA224):

    91 		{

    92 			hash = CSHA2::NewL(E224Bit);

    93 			break;

    94 		}

    95 	case (CMessageDigest::ESHA256):

    96 		{

    97 			hash = CSHA2::NewL(E256Bit);

    98 			break;

    99 		}

   100 	case (CMessageDigest::ESHA384):

   101 		{

   102 			hash = CSHA2::NewL(E384Bit);

   103 			break;

   104 		}

   105 	case (CMessageDigest::ESHA512):

   106 		{

   107 			hash = CSHA2::NewL(E512Bit);

   108 			break;

   109 		}

   110 	case (CMessageDigest::HMAC):

   111 	default:	

   112 		User::Leave(KErrNotSupported);

   113 	}

   114 

   115 	return (hash);

   116 }

   117 

   118 EXPORT_C CMessageDigest* CMessageDigestFactory::NewDigestLC(CMessageDigest::THashId aHashId)

   119 {

   120 	CMessageDigest* hash = CMessageDigestFactory::NewDigestL(aHashId);

   121 	CleanupStack::PushL(hash);

   122 	return (hash);

   123 }

   124 

   125 EXPORT_C CMessageDigest* CMessageDigestFactory::NewHMACL(CMessageDigest::THashId aHashId, const TDesC8& aKey)

   126 {

   127 	CMessageDigest* hash = CMessageDigestFactory::NewDigestLC(aHashId);

   128 	CMessageDigest* hmac = CHMAC::NewL(aKey, hash);

   129 	CleanupStack::Pop(hash);	//	Now owned by hmac

   130 	return (hmac);

   131 }

   132 

   133 EXPORT_C CMessageDigest* CMessageDigestFactory::NewHMACLC(CMessageDigest::THashId aHashId, const TDesC8& aKey)

   134 {

   135 	CMessageDigest* hmac = CMessageDigestFactory::NewHMACL(aHashId, aKey);

   136 	CleanupStack::PushL(hmac);

   137 	return (hmac);

   138 }
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