security

问题 I couldn't find aes libraries in .net framework. Is there any external libraries? thanks 回答1: You do not mention which version of the framework you are using, but since you did not immediately find System.Security.Cryptography.AesManaged, I guess you are using a version earlier than 3.5. Instead use System.Security.Cryptography.RijndaelManaged. Rijndael is the name of the algorithm that was standardized by NIST as AES. It is exactly the same algorithm (except that you can choose some

问题 I couldn't find aes libraries in .net framework. Is there any external libraries? thanks 回答1: You do not mention which version of the framework you are using, but since you did not immediately find System.Security.Cryptography.AesManaged, I guess you are using a version earlier than 3.5. Instead use System.Security.Cryptography.RijndaelManaged. Rijndael is the name of the algorithm that was standardized by NIST as AES. It is exactly the same algorithm (except that you can choose some

问题 I couldn't find aes libraries in .net framework. Is there any external libraries? thanks 回答1: You do not mention which version of the framework you are using, but since you did not immediately find System.Security.Cryptography.AesManaged, I guess you are using a version earlier than 3.5. Instead use System.Security.Cryptography.RijndaelManaged. Rijndael is the name of the algorithm that was standardized by NIST as AES. It is exactly the same algorithm (except that you can choose some

问题 Mysql : SELECT AES_ENCRYPT('Test','pass') AES_ENCRYPT() and AES_DECRYPT() enable encryption and decryption of data using the official AES (Advanced Encryption Standard) algorithm, previously known as “Rijndael.” Encoding with a 128-bit key length is used, but you can extend it up to 256 bits by modifying the source. We chose 128 bits because it is much faster and it is secure enough for most purposes. http://dev.mysql.com/doc/refman/5.5/en/encryption-functions.html#function_aes-encrypt I was

问题 Mysql : SELECT AES_ENCRYPT('Test','pass') AES_ENCRYPT() and AES_DECRYPT() enable encryption and decryption of data using the official AES (Advanced Encryption Standard) algorithm, previously known as “Rijndael.” Encoding with a 128-bit key length is used, but you can extend it up to 256 bits by modifying the source. We chose 128 bits because it is much faster and it is secure enough for most purposes. http://dev.mysql.com/doc/refman/5.5/en/encryption-functions.html#function_aes-encrypt I was

问题 Mysql : SELECT AES_ENCRYPT('Test','pass') AES_ENCRYPT() and AES_DECRYPT() enable encryption and decryption of data using the official AES (Advanced Encryption Standard) algorithm, previously known as “Rijndael.” Encoding with a 128-bit key length is used, but you can extend it up to 256 bits by modifying the source. We chose 128 bits because it is much faster and it is secure enough for most purposes. http://dev.mysql.com/doc/refman/5.5/en/encryption-functions.html#function_aes-encrypt I was

问题 We are in the making of an Android app, a quiz game, which we would like to cache questions + answers for when the user is offline. The problem with this is that we would need to withhold this data from the user until she has answered the questions. Otherwise, cheating would be very easy, which would harm the game. One could then extract all questions + answers and automatically submit answers to the server API. The most convenient way would be to retrieve a key or secret from our server at

问题 We are in the making of an Android app, a quiz game, which we would like to cache questions + answers for when the user is offline. The problem with this is that we would need to withhold this data from the user until she has answered the questions. Otherwise, cheating would be very easy, which would harm the game. One could then extract all questions + answers and automatically submit answers to the server API. The most convenient way would be to retrieve a key or secret from our server at

问题 We are in the making of an Android app, a quiz game, which we would like to cache questions + answers for when the user is offline. The problem with this is that we would need to withhold this data from the user until she has answered the questions. Otherwise, cheating would be very easy, which would harm the game. One could then extract all questions + answers and automatically submit answers to the server API. The most convenient way would be to retrieve a key or secret from our server at

问题 I wrote the program code String message = "This is test"; Settings.System.putString(context.getContentResolver(), Settings.Secure.LOCK_PATTERN_ENABLED, message); This is not changing the lock screen text(Owner Info) and Added permission as <uses-permission android:name="android.permission.WRITE_SETTINGS" /> 回答1: Change Settings.Secure.LOCK_PATTERN_ENABLED to Settings.System.NEXT_ALARM_FORMATTED . Note that Settings.System.NEXT_ALARM_FORMATTED was deprecated in API level 21. You must use