1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/epoc32/include/mw/sencryptoutils.h Tue Mar 16 16:12:26 2010 +0000
1.3 @@ -0,0 +1,125 @@
1.4 +/*
1.5 +* Copyright (c) 2006-2006 Nokia Corporation and/or its subsidiary(-ies).
1.6 +* All rights reserved.
1.7 +* This component and the accompanying materials are made available
1.8 +* under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
1.9 +* which accompanies this distribution, and is available
1.10 +* at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
1.11 +*
1.12 +* Initial Contributors:
1.13 +* Nokia Corporation - initial contribution.
1.14 +*
1.15 +* Contributors:
1.16 +*
1.17 +* Description: Crypto graphy utils api declaration
1.18 +*
1.19 +*/
1.20 +
1.21 +#ifndef C_SEN_CRYPTO_UTILS_H
1.22 +#define C_SEN_CRYPTO_UTILS_H
1.23 +
1.24 +#include <hash.h>
1.25 +
1.26 +
1.27 +/**
1.28 + * Set of static convenience methods to help in cryptography
1.29 + */
1.30 +class SenCryptoUtils
1.31 + {
1.32 + public:
1.33 + /**
1.34 + * Algorithm taken from of TLS specification RFC 2246 - 5.HMAC and the pseudorandom function
1.35 + *
1.36 + * P_hash(secret, seed) = HMAC_hash(secret, A(1) + seed) +
1.37 + * HMAC_hash(secret, A(2) + seed) +
1.38 + * HMAC_hash(secret, A(3) + seed) + ...
1.39 + *
1.40 + * Where + indicates concatenation.
1.41 + *
1.42 + * A() is defined as:
1.43 + * A(0) = seed
1.44 + * A(i) = HMAC_hash(secret, A(i-1))
1.45 + *
1.46 + * P_hash can be iterated as many times as is necessary to produce the
1.47 + * required quantity of data. For example, if P_SHA-1 was being used to
1.48 + * create 64 bytes of data, it would have to be iterated 4 times
1.49 + * (through A(4)), creating 80 bytes of output data; the last 16 bytes
1.50 + * of the final iteration would then be discarded, leaving 64 bytes of
1.51 + * output data.
1.52 + * @param aSecret - secret
1.53 + * @param aSeed - seed
1.54 + * @param aLength - length of new secret
1.55 + * @since Series60 4.0
1.56 + */
1.57 + IMPORT_C static HBufC8* GetPSHA1HashL( const TDesC8& aSecret,
1.58 + const TDesC8& aSeed,
1.59 + const TInt aLength );
1.60 +
1.61 + /*
1.62 + * Encode data into Base64 format
1.63 + * @param aData - source data
1.64 + * @return encoded data, if some problem occurs, NULL is returned
1.65 + * @since Series60 4.0
1.66 + */
1.67 + IMPORT_C static HBufC8* EncodeBase64L(const TDesC8& aData);
1.68 +
1.69 + /*
1.70 + * Decode data from Base64 format
1.71 + * @param aData - source data
1.72 + * @return decoded data, if some problem occurs, NULL is returned
1.73 + * @since Series60 4.0
1.74 + */
1.75 + IMPORT_C static HBufC8* DecodeBase64L(const TDesC8& aData);
1.76 +
1.77 + /*
1.78 + * Randomize some data and hash it using MD5 digest algorithm.
1.79 + * @return hashed randomized data (constant length of hash according to MD5 specification)
1.80 + * @since Series60 4.0
1.81 + */
1.82 + IMPORT_C static HBufC8* RandomAndHashMd5LC();
1.83 +
1.84 + /*
1.85 + * Create <BinarySecret> tag from security token.
1.86 + * @param aSecret security context token.
1.87 + * @param aValueType Indicates what the security token is
1.88 + * @return <BinarySecret> tag with encoded (base64) token.
1.89 + */
1.90 + IMPORT_C static HBufC8* CreateEncodedBinarySecretL( const TDesC8& aSecret,
1.91 + const TDesC8& aValueType );
1.92 +
1.93 + /*
1.94 + * Timestamp as number of seconds since 1 january 1970
1.95 + * Calculated for present phone time.
1.96 + * @return timestamp value
1.97 + * @since Series60 5.0
1.98 + */
1.99 + IMPORT_C static HBufC8* GetTimestampL();
1.100 +
1.101 +
1.102 + /*
1.103 + * Timestamp as number of seconds since 1 january 1970.
1.104 + * Calculated for provided time.
1.105 + * @param aTime base for generated timestamp
1.106 + * @return timestamp value
1.107 + * @since Series60 5.0
1.108 + */
1.109 + IMPORT_C static HBufC8* GetTimestampL(TTime aTime);
1.110 +
1.111 + /*
1.112 + * Randomize some data (based on time) and hash it using MD5 digest algorithm,
1.113 + * convert each byte to hex nember representation
1.114 + * @return hashed randomized data (constant length of hash according to MD5 specification
1.115 + * doubled during hex conversion)
1.116 + * @since Series60 5.0
1.117 + */
1.118 + IMPORT_C static HBufC8* GetRandomNonceL();
1.119 +
1.120 + private:
1.121 + /**
1.122 + * Hide default C++ constructor.
1.123 + */
1.124 + SenCryptoUtils();
1.125 + };
1.126 +
1.127 +#endif // C_SEN_CRYPTO_UTILS_H
1.128 +