Data decryption is the process of converting encrypted data into its original, plaintext form using a decryption algorithm and secret key.
private String decrypt(String encryptedText) {
try {
SecretKeySpec secretKey = newSecretKeySpec(AES_SECRET_KEY.getBytes(), "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, secretKey);
byte[] decryptedBytes = cipher.doFinal(encryptedText.getBytes());
return new String(decryptedBytes);
} catch (Exception e) {
throw new RuntimeException("Failed to decrypt password", e);
}
}
This is a Java code snippet that defines a method named decrypt that takes an encrypted text as input and returns the decrypted text.
The method uses the Advanced Encryption Standard (AES) algorithm for decryption. It first creates a SecretKeySpec object using a string representing the AES secret key (AES_SECRET_KEY) and the "AES" encryption algorithm. The Cipher class is then used to initialize a Cipher object with the decryption mode and the previously created secret key. The do Final method of the Cipher object is called with the encrypted text as the input to perform the decryption, and the resulting decrypted bytes are stored in a byte array.
Finally, the method creates a new String object from the decrypted bytes and returns it. If an exception occurs during the decryption process, the method throws a Runtime Exception with an error message indicating that the decryption has failed.
Thank You
Bhaskar K (Intern)
Shield Strategist,
Data Shield Team
Enterprise Minds, Tirupati.
