Issue I’m attempting to do CS50 courses in dart, so for week 2 substitution test i’m stuck with this: void main(List<String> args) { String alphabet = ‘abcdefghijklmnopqrstuvwxyz’; String cypher = ‘qwertyuiopasdfghjklzxcvbnm’; int n = alphabet.length; print(‘entertext:’); String text = stdin.readLineSync(encoding:
Continue readingTag: encryption
Android Encrypt CC Using RSA JWK
Issue I’m trying to create an RSAPublicKeySpec with the JWK modulus and exponent provided by CyberSource. The goal is to use it to encrypt a given credit card number. I’m stuck with this error "RSA Exponent is even" Example JWK:
Continue readingSend an encrypted request to APi in Dart
Issue I am trying to send an encrypted request to a specific API in dart, but without success – I don’t have any experience with the Dart language. This are the requirements: The JSON to be sent is encrypted as
Continue readingEncrypt Existing Database with SQLCipher in Android
Issue I have a database file in my assets that I copy in the app database folder. After the copy (it works), I want to encrypt the copied database with SQLCipher. For some reason, I get this error: Database: sqlite
Continue readingSecurity of SQLite databases in Android
Issue I’m planning to use SQLite in my android app. But problem is, SQLite doesn’t support Encryption officially without a license of SQLite Encryption Extention. So I just kept searching without any hope, and found something interesting. This link explains
Continue readingTriple DES encryption string generates "\n"
Issue While encrypting a string, it generates ‘\n’ at end of the string. This is how I’m doing encryption public static String encrypt(String plainText) throws Exception { byte[] tdesKeyData = Consts.getSecretKey().getBytes(); byte[] myIV = Consts.getInitializationVector().getBytes(); SecretKeySpec myKey = new SecretKeySpec(tdesKeyData,
Continue readingCipher functions : WRONG FINAL BLOCK LENGTH Android Studio
Issue There are a lot of threads on stack overflow with this topic, and always the same solutions, but these doesn’t work for me. I am looking for a way to decrypt the value byte[] encrypted and return byte[] decodedBytes.
Continue readingI want to decrypt and enccrypt the data in flutter
Issue I want to encrypt the data in flutter using the AES cbc-128 algorithm. below is the java code for that i want to achieve the same functionality as below but in dart. i have tried cryptography dependency in flutter
Continue readingConverting AES decryption function from Java to Flutter
Issue I have been trying to convert an AES decryption function from Java to Dart. It uses AES with, IV and salt. No padding operations are performed. This is the Java code: public byte[] Decrypt(byte[] Data, String Password) throws InvalidKeyException,
Continue readingHow to Secure Android Shared Preferences?
Issue The common location where SharedPreferences are stored in Android apps is: /data/data/<package name>/shared_prefs/<filename.xml> User with root privileges can navigate to this location and can change its values.Need of protecting it is of much importance. In how many ways we
Continue reading