2 // Copyright (c) 2012 Samsung Electronics Co., Ltd.
4 // Licensed under the Apache License, Version 2.0 (the License);
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
8 // http://www.apache.org/licenses/LICENSE-2.0
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
18 * @file FSecDesEdeSecureRandom.h
19 * @brief This is the header file for the %DesEdeSecureRandom class.
21 * This header file contains the declarations of the %DesEdeSecureRandom class.
23 #ifndef _FSEC_DESEDE_SECURE_RANDOM_H_
24 #define _FSEC_DESEDE_SECURE_RANDOM_H_
26 #include <FSecISecureRandom.h>
29 namespace Tizen { namespace Security
33 * @class DesEdeSecureRandom
34 * @brief This class provides a secure random object with the Data Encryption Standard in the Encrypt-Decrypt-Encrypt (DES-EDE) mode.
38 * The %DesEdeSecureRandom class generates a secure random object to deterministically seed cryptographic algorithms. The Data Encryption Standard (DES)
39 * method generates user-defined number of random bytes in the Encrypt-Decrypt-Encrypt mode. @n
41 * For more information on the class features, see <a href="../org.tizen.native.appprogramming/html/guide/security/key_mgmt_and_csprng.htm">Key Management and CSPRNG</a>.
44 * @see AesSecureRandom
45 * @see DesSecureRandom
47 class _OSP_EXPORT_ DesEdeSecureRandom
48 : public virtual ISecureRandom
49 , public Tizen::Base::Object
54 * This is the default constructor for this class.
58 DesEdeSecureRandom(void);
61 * This destructor overrides Tizen::Base::Object::~Object().
65 virtual ~DesEdeSecureRandom(void);
68 * Generates a user-defined number of random bytes.
72 * @return A pointer to the Tizen::Base::ByteBuffer class that contains the output, @n
73 * else @c null if an error occurs
74 * @param[in] numBytes The number of random bytes to generate
75 * @exception E_SUCCESS The method is successful.
76 * @exception E_OUT_OF_MEMORY The memory is insufficient.
77 * @exception E_INVALID_ARG The specified @c numBytes is @c 0 or negative.
78 * @exception E_SYSTEM A system error has occurred. @n
79 * The method has failed to operate with the OpenSSL library, or the Tizen::Base::ByteBuffer operation has failed.
81 virtual Tizen::Base::ByteBuffer* GenerateRandomBytesN(int numBytes);
86 // The implementation of this copy constructor is intentionally blank and declared as private to prohibit copying of objects.
90 DesEdeSecureRandom(const DesEdeSecureRandom& rhs);
93 // The implementation of this copy assignment operator is intentionally blank and declared as private to prohibit copying of objects.
97 DesEdeSecureRandom& operator =(const DesEdeSecureRandom& rhs);
100 class _DesEdeSecureRandomImpl* __pDesEdeSecureRandomImpl;
101 friend class _DesEdeSecureRandomImpl;
103 }; //DesEdeSecureRandom
105 } } //Tizen::Security
107 #endif // _FSEC_DESEDE_SECURE_RANDOM_H_