2 // Open Service Platform
3 // Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 // Licensed under the Apache License, Version 2.0 (the License);
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
9 // http://www.apache.org/licenses/LICENSE-2.0
11 // Unless required by applicable law or agreed to in writing, software
12 // distributed under the License is distributed on an "AS IS" BASIS,
13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 // See the License for the specific language governing permissions and
15 // limitations under the License.
19 * @file FSecCryptoCastCipher.h
20 * @brief This is the header file for the %CastCipher class.
22 * This header file contains the declarations of the %CastCipher class.
24 #ifndef _FSEC_CRYPTO_CAST_CIPHER_H_
25 #define _FSEC_CRYPTO_CAST_CIPHER_H_
27 #include <FSecCryptoISymmetricCipher.h>
32 namespace Tizen { namespace Security { namespace Crypto
35 class _SymmetricCipher;
38 * @brief This class provides methods for encryption and decryption using the CAST-128 algorithm.
42 * The %CastCipher class provides a symmetric cipher using the CAST-128 algorithm.
43 * Set appropriate values for the requested mode/key bit/padding scheme and cipher operation mode (CIPHER_ENCRYPT
44 * or CIPHER_DECRYPT) parameters. @n
46 * For more information on the class features, see <a href="../org.tizen.native.appprogramming/html/guide/security/ciphers.htm">Ciphers</a>.
48 * @see ISymmetricCipher
52 class _OSP_EXPORT_ CastCipher
53 : public virtual ISymmetricCipher
54 , public Tizen::Base::Object
59 * The object is not fully constructed after this constructor is called. For full construction, @n
60 * the Construct() method must be called right after calling this constructor.
67 * This destructor overrides Tizen::Base::Object::~Object().
71 virtual ~CastCipher(void);
74 * Initializes this instance of %CastCipher with the specified parameters.
78 * @return An error code
79 * @param[in] transformation The name of the requested key bit/padding scheme @n
80 * The valid values for %CastCipher are "128/PKCS7PADDING" and "128/NOPADDING".
81 * @param[in] opMode The cipher operation mode @n
82 * The valid values for %CastCipher are @c CIPHER_ENCRYPT and @c CIPHER_DECRYPT.
83 * @exception E_SUCCESS The method is successful.
84 * @exception E_OUT_OF_MEMORY The memory is insufficient.
85 * @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.
86 * @remarks If @c opMode is not matching the actual operation, the result of the operation is @c null and an exception is returned. @n
87 * 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.
89 virtual result Construct(const Tizen::Base::String& transformation, enum CipherOperation opMode);
92 * Sets a symmetric key for encryption or decryption.
96 * @return An error code
97 * @param[in] key An instance of ISecretKey
98 * @exception E_SUCCESS The method is successful.
99 * @exception E_INVALID_ARG The specified key is invalid.
100 * @exception E_OUT_OF_MEMORY The memory is insufficient.
102 virtual result SetKey(const Tizen::Security::ISecretKey& key);
105 * Sets the initial vector.
109 * @return An error code
110 * @param[in] initialVector The initial vector
111 * @exception E_SUCCESS The method is successful.
112 * @exception E_INVALID_ARG The specified input parameter is invalid.
113 * @exception E_OUT_OF_MEMORY The memory is insufficient.
115 virtual result SetInitialVector(const Tizen::Base::ByteBuffer& initialVector);
118 * Encrypts the data (single-part).
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.
135 * @remarks A secret key and an initial vector are set before calling this method.
137 virtual Tizen::Base::ByteBuffer* EncryptN(const Tizen::Base::ByteBuffer& input);
140 * Decrypts the data (single-part).
144 * @return A pointer to the Tizen::Base::ByteBuffer class that contains the output, @n
145 * else @c null if an error occurs
146 * @param[in] input An instance of Tizen::Base::ByteBuffer
147 * @exception E_SUCCESS The method is successful.
148 * @exception E_INVALID_ARG The specified instance of Tizen::Base::ByteBuffer is invalid or empty.
149 * @exception E_OUT_OF_MEMORY The memory is insufficient.
150 * @exception E_KEY_NOT_FOUND The specified key is not found.
151 * @exception E_INVALID_OPERATION The specified cipher operation mode for this method is invalid.
152 * @exception E_OVERFLOW This operation has caused the memory to overflow.
153 * @exception E_SYSTEM A system error has occurred. @n
154 * The method has failed to operate with the openssl library, or
155 * the Tizen::Base::ByteBuffer operation has failed.
156 * @remarks The specific error code can be accessed using the GetLastResult() method.
157 * @remarks A secret key and an initial vector are set before calling this method.
159 virtual Tizen::Base::ByteBuffer* DecryptN(const Tizen::Base::ByteBuffer& input);
162 * Initializes a multiple-part encryption or decryption operation.
166 * @return An error code
167 * @exception E_SUCCESS The method is successful.
168 * @exception E_OUT_OF_MEMORY The memory is insufficient.
169 * @exception E_KEY_NOT_FOUND The specified key is not found.
170 * @exception E_INVALID_OPERATION The specified cipher operation mode for this method is invalid.
171 * @exception E_SYSTEM A system error has occurred. @n
172 * The method has failed to operate with the openssl library.
173 * @remarks A secret key and an initial vector are set before calling this method.
175 virtual result Initialize(void);
178 * Updates a multiple-part encryption or decryption operation.
182 * @return A pointer to the Tizen::Base::ByteBuffer class that contains the output, @n
183 * else @c null if an error occurs
184 * @param[in] input An instance of Tizen::Base::ByteBuffer
185 * @exception E_SUCCESS The method is successful.
186 * @exception E_OUT_OF_MEMORY The memory is insufficient.
187 * @exception E_OVERFLOW This operation has caused the memory to overflow.
188 * @exception E_INVALID_ARG The specified instance of Tizen::Base::ByteBuffer is invalid or empty.
189 * @exception E_SYSTEM A system error has occurred. @n
190 * The method has failed to operate with the openssl library, or
191 * the Tizen::Base::ByteBuffer operation has failed.
192 * @remarks The specific error code can be accessed using the GetLastResult() method.
194 virtual Tizen::Base::ByteBuffer* UpdateN(const Tizen::Base::ByteBuffer& input);
197 * Finalizes a multiple-part encryption or decryption operation.
201 * @return A pointer to the Tizen::Base::ByteBuffer class that contains the output, @n
202 * else @c null if an error occurs
203 * @exception E_SUCCESS The method is successful.
204 * @exception E_OUT_OF_MEMORY The memory is insufficient.
205 * @exception E_OVERFLOW This operation has caused the memory to overflow.
206 * @exception E_SYSTEM A system error has occurred. @n
207 * The method has failed to operate with the openssl library, or
208 * the Tizen::Base::ByteBuffer operation has failed.
209 * @remarks The specific error code can be accessed using the GetLastResult() method.
211 virtual Tizen::Base::ByteBuffer* FinalizeN(void);
218 * @return A pointer to the Tizen::Base::ByteBuffer class that contains the output, @n
219 * else @c null if an error occurs
220 * @param[in] secretKey The secret key to wrap
221 * @remarks This operation is not supported in the %CastCipher class.
222 * Therefore, this method always returns @c null.
223 * @remarks The @c E_UNSUPPORTED_ALGORITHM exception is returned if the GetLastResult() method is called.
225 virtual Tizen::Base::ByteBuffer* WrapN(const Tizen::Base::ByteBuffer& secretKey);
228 * Unwraps a previously wrapped key.
232 * @return A pointer to the Tizen::Base::ByteBuffer class that contains the output, @n
233 * else @c null if an error occurs
234 * @param[in] wrappedKey The wrapped key to unwrap
235 * @remarks This operation is not supported in the %CastCipher class.
236 * Therefore, this method always returns @c null.
237 * @remarks The @c E_UNSUPPORTED_ALGORITHM exception is returned if the GetLastResult() method is called.
239 virtual Tizen::Base::ByteBuffer* UnwrapN(const Tizen::Base::ByteBuffer& wrappedKey);
244 // The implementation of this copy constructor is intentionally blank and declared as private to prohibit copying of objects.
248 CastCipher(const CastCipher& rhs);
251 // The implementation of this copy assignment operator is intentionally blank and declared as private to prohibit copying of objects.
255 CastCipher& operator =(const CastCipher& rhs);
258 _SymmetricCipher* __pSymmetricCipher;
259 const evp_cipher_st* __pCipherAlgorithm;
260 Tizen::Base::String __cipherAlgorithm;
262 class _CastCipherImpl* __pCastCipherImpl;
263 friend class _CastCipherImpl;
267 } } } //Tizen::Security::Crypto
269 #endif //_FSEC_CRYPTO_CAST_CIPHER_H_