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 FSecCryptoAesCipher.h
19 * @brief This is the header file for the %AesCipher class.
21 * This header file contains the declarations of the %AesCipher class.
23 #ifndef _FSEC_CRYPTO_AES_CIPHER_H_
24 #define _FSEC_CRYPTO_AES_CIPHER_H_
26 #include <FSecCryptoISymmetricCipher.h>
31 namespace Tizen { namespace Security { namespace Crypto
34 class _SymmetricCipher;
37 * @brief This class provides methods for encryption and decryption using the Advanced Encryption Standard (AES) method.
41 * The %AesCipher class provides a symmetric cipher using the Advanced Encryption Standard (AES) method.
42 * Set appropriate values for the requested mode/key bit/padding scheme and cipher operation mode (::CIPHER_ENCRYPT, ::CIPHER_DECRYPT, ::CIPHER_WRAP,
43 * or ::CIPHER_UNWRAP) parameters. @n
45 * For more information on the class features, see <a href="../org.tizen.native.appprogramming/html/guide/security/ciphers.htm">Ciphers</a>.
47 * @see ISymmetricCipher
51 class _OSP_EXPORT_ AesCipher
52 : public virtual ISymmetricCipher
53 , public Tizen::Base::Object
58 * The object is not fully constructed after this constructor is called. For full construction, @n
59 * the Construct() method must be called right after calling this constructor.
66 * This destructor overrides Tizen::Base::Object::~Object().
70 virtual ~AesCipher(void);
73 * Initializes this instance of %AesCipher with the specified parameters.
77 * @return An error code
78 * @param[in] transformation The name of the requested mode/key bit/padding scheme @n
79 * For example, "CBC/128/NOPADDING" or "CBC/192/NOPADDING".
80 * @param[in] opMode The cipher operation mode @n
81 * For example, @c CIPHER_ENCRYPT, @c CIPHER_DECRYPT, @c CIPHER_WRAP, or @c CIPHER_UNWRAP.
82 * @exception E_SUCCESS The method is successful.
83 * @exception E_OUT_OF_MEMORY The memory is insufficient.
84 * @exception E_INVALID_ARG A specified input parameter is invalid, or the specified @c opMode does not contain a valid value for the cipher operation.
85 * @remarks If @c opMode is not matching the actual operation, the result of the operation is @c null and an exception is returned. @n
86 * For example, if @c opMode is set to @c CIPHER_ENCRYPT, @c CIPHER_WRAP, or @c CIPHER_UNWRAP and the DecryptN() method is used, then the result obtained is @c null and an exception is returned.
88 virtual result Construct(const Tizen::Base::String& transformation, enum CipherOperation opMode);
91 * Sets a symmetric key for encryption or decryption.
95 * @return An error code
96 * @param[in] key An instance of ISecretKey
97 * @exception E_SUCCESS The method is successful.
98 * @exception E_INVALID_ARG The specified @c key is invalid.
99 * @exception E_OUT_OF_MEMORY The memory is insufficient.
101 virtual result SetKey(const Tizen::Security::ISecretKey& key);
104 * Sets the initial vector.
108 * @return An error code
109 * @param[in] initialVector The initial vector
110 * @exception E_SUCCESS The method is successful.
111 * @exception E_INVALID_ARG The specified input parameter is invalid.
112 * @exception E_OUT_OF_MEMORY The memory is insufficient.
114 virtual result SetInitialVector(const Tizen::Base::ByteBuffer& initialVector);
117 * Encrypts the data (single-part).
120 * @pre Before calling this method, a secret key and an initial vector should be set using SetKey() and SetInitialVector().
122 * @return A pointer to the Tizen::Base::ByteBuffer class that contains the output, @n
123 * else @c null if an error occurs
124 * @param[in] input An instance of Tizen::Base::ByteBuffer
125 * @exception E_SUCCESS The method is successful.
126 * @exception E_INVALID_ARG The specified instance of Tizen::Base::ByteBuffer is invalid or empty.
127 * @exception E_OUT_OF_MEMORY The memory is insufficient.
128 * @exception E_KEY_NOT_FOUND The specified key is not found.
129 * @exception E_INVALID_OPERATION The specified cipher operation mode for this method is invalid.
130 * @exception E_OVERFLOW This operation has caused the memory to overflow.
131 * @exception E_SYSTEM A system error has occurred. @n
132 * The method has failed to operate with the openssl library, or
133 * the Tizen::Base::ByteBuffer operation has failed.
134 * @remarks The specific error code can be accessed using the GetLastResult() method.
136 virtual Tizen::Base::ByteBuffer* EncryptN(const Tizen::Base::ByteBuffer& input);
139 * Decrypts the data (single-part).
142 * @pre Before calling this method, a secret key and an initial vector should be set using SetKey() and SetInitialVector().
143 * @return A pointer to the Tizen::Base::ByteBuffer class that contains the output, @n
144 * else @c null if an error occurs
145 * @param[in] input An instance of Tizen::Base::ByteBuffer
146 * @exception E_SUCCESS The method is successful.
147 * @exception E_INVALID_ARG The specified instance of Tizen::Base::ByteBuffer is invalid or empty.
148 * @exception E_OUT_OF_MEMORY The memory is insufficient.
149 * @exception E_KEY_NOT_FOUND The specified key is not found.
150 * @exception E_INVALID_OPERATION The specified cipher operation mode for this method is invalid.
151 * @exception E_OVERFLOW This operation has caused the memory to overflow.
152 * @exception E_SYSTEM A system error has occurred. @n
153 * The method has failed to operate with the openssl library, or
154 * the Tizen::Base::ByteBuffer operation has failed.
155 * @remarks The specific error code can be accessed using the GetLastResult() method.
157 virtual Tizen::Base::ByteBuffer* DecryptN(const Tizen::Base::ByteBuffer& input);
160 * Initializes a multiple-part encryption or decryption operation.
164 * @return An error code
165 * @exception E_SUCCESS The method is successful.
166 * @exception E_OUT_OF_MEMORY The memory is insufficient.
167 * @exception E_KEY_NOT_FOUND The specified key is not found.
168 * @exception E_INVALID_OPERATION The specified cipher operation mode for this method is invalid.
169 * @exception E_SYSTEM A system error has occurred. @n
170 * The method has failed to operate with the openssl library.
172 virtual result Initialize(void);
175 * Updates a multiple-part encryption or decryption operation.
179 * @return A pointer to the Tizen::Base::ByteBuffer class that contains the output, @n
180 * else @c null if an error occurs
181 * @param[in] input An instance of Tizen::Base::ByteBuffer
182 * @exception E_SUCCESS The method is successful.
183 * @exception E_OUT_OF_MEMORY The memory is insufficient.
184 * @exception E_OVERFLOW This operation has caused the memory to overflow.
185 * @exception E_INVALID_ARG The specified instance of Tizen::Base::ByteBuffer is invalid or empty.
186 * @exception E_SYSTEM A system error has occurred. @n
187 * The method has failed to operate with the openssl library, or
188 * the Tizen::Base::ByteBuffer operation has failed.
189 * @remarks The specific error code can be accessed using the GetLastResult() method.
191 virtual Tizen::Base::ByteBuffer* UpdateN(const Tizen::Base::ByteBuffer& input);
194 * Finalizes a multiple-part encryption or decryption operation.
198 * @return A pointer to the Tizen::Base::ByteBuffer class that contains the output, @n
199 * else @c null if an error occurs
200 * @exception E_SUCCESS The method is successful.
201 * @exception E_OUT_OF_MEMORY The memory is insufficient.
202 * @exception E_OVERFLOW This operation has caused the memory to overflow.
203 * @exception E_SYSTEM A system error has occurred. @n
204 * The method has failed to operate with the openssl library, or
205 * the Tizen::Base::ByteBuffer operation has failed.
206 * @remarks The specific error code can be accessed using the GetLastResult() method.
208 virtual Tizen::Base::ByteBuffer* FinalizeN(void);
214 * @pre Before calling this method, a secret key should be set using SetKey().
215 * @return A pointer to the Tizen::Base::ByteBuffer class that contains the output, @n
216 * else @c null if an error occurs
217 * @param[in] secretKey The secret key to wrap
218 * @exception E_SUCCESS The method is successful.
219 * @exception E_INVALID_ARG The specified instance of Tizen::Base::ByteBuffer is invalid or empty.
220 * @exception E_OUT_OF_MEMORY The memory is insufficient.
221 * @exception E_KEY_NOT_FOUND The specified key is not found.
222 * @exception E_INVALID_OPERATION The specified cipher operation mode for this method is invalid.
223 * @exception E_UNSUPPORTED_ALGORITHM The specified cipher algorithm for this method is invalid.
224 * @exception E_SYSTEM A system error has occurred. @n
225 * The method has failed to operate with the openssl library.
226 * @remarks The specific error code can be accessed using the GetLastResult() method.
228 virtual Tizen::Base::ByteBuffer* WrapN(const Tizen::Base::ByteBuffer& secretKey);
231 * Unwraps a previously wrapped key.
234 * @pre Before calling this method, a secret key should be set using SetKey().
235 * @return A pointer to the Tizen::Base::ByteBuffer class that contains the output, @n
236 * else @c null if an error occurs
237 * @param[in] wrappedKey The wrapped key to unwrap
238 * @exception E_SUCCESS The method is successful.
239 * @exception E_INVALID_ARG The specified instance of Tizen::Base::ByteBuffer is invalid.
240 * @exception E_OUT_OF_MEMORY The memory is insufficient.
241 * @exception E_KEY_NOT_FOUND The specified key is not found.
242 * @exception E_INVALID_OPERATION The specified cipher operation mode for this method is invalid.
243 * @exception E_UNSUPPORTED_ALGORITHM The specified cipher algorithm for this method is invalid.
244 * @exception E_SYSTEM A system error has occurred. @n
245 * The method has failed to operate with the openssl library.
246 * @remarks The specific error code can be accessed using the GetLastResult() method.
248 virtual Tizen::Base::ByteBuffer* UnwrapN(const Tizen::Base::ByteBuffer& wrappedKey);
253 // The implementation of this copy constructor is intentionally blank and declared as private to prohibit copying of objects.
257 AesCipher(const AesCipher& rhs);
260 // The implementation of this copy assignment operator is intentionally blank and declared as private to prohibit copying of objects.
264 AesCipher& operator =(const AesCipher& rhs);
267 _SymmetricCipher* __pSymmetricCipher;
268 const evp_cipher_st* __pCipherAlgorithm;
269 Tizen::Base::String __cipherAlgorithm;
271 class _AesCipherImpl* __pAesCipherImpl;
272 friend class _AesCipherImpl;
276 } } } //Tizen::Security:Crypto
278 #endif //_FSEC_CRYPTO_AES_CIPHER_H_