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2014/10/16 ¤W¤È 08:12:14
android Programming Glossary: decryptedHow to encrypt file from sd card using AES in Android? http://stackoverflow.com/questions/10782187/how-to-encrypt-file-from-sd-card-using-aes-in-android encrypted FileOutputStream fos new FileOutputStream data decrypted SecretKeySpec sks new SecretKeySpec MyDifficultPassw .getBytes.. the execution of decrypt there should be a file named decrypted . This file contains the free text. Edit You write you're a..
Encryption error on Android 4.2 http://stackoverflow.com/questions/13383006/encryption-error-on-android-4-2 string. br @param the HEX string to decrypt @return the decrypted string public static String decrypt String encrypted try byte.. result should not be empty encrypted.length 0 String decrypted UtilsEncryption.decrypt encrypted assertNotNull The decrypted.. UtilsEncryption.decrypt encrypted assertNotNull The decrypted result should not be null decrypted assertTrue The decrypted..
Encryption compatable between Android and C# http://stackoverflow.com/questions/2090765/encryption-compatable-between-android-and-c-sharp TripleDES etc. from Android and eventually wind up being decrypted in C#. I found an example for encoding AES in Android and encoding..
How to view AndroidManifest.xml from APK file? http://stackoverflow.com/questions/4191762/how-to-view-androidmanifest-xml-from-apk-file Inside it you can find the AndroidManifest.xml file in decrypted form and you can also find other XML files inside the HelloWorld..
BouncyCastle AES error when upgrading to 1.45 http://stackoverflow.com/questions/4405334/bouncycastle-aes-error-when-upgrading-to-1-45 AES cipher.init Cipher.DECRYPT_MODE skeySpec byte decrypted cipher.doFinal encrypted When using BC 1.45 I get this exception..
hiding strings in Obfuscated code http://stackoverflow.com/questions/4427238/hiding-strings-in-obfuscated-code your string using a known key. Convert your code to use a decrypted version of this string example Before public class Foo private..
How to make apk Secure. Protecting from Decompile http://stackoverflow.com/questions/6235290/how-to-make-apk-secure-protecting-from-decompile then loading these classes into JVM. These classes can be decrypted by hardware or software. Developers often loading cryptographic.. classes first then decrypt them. And finally loading the decrypted classes to JVM. Customed ClassLoader is a very important class.. been overcome then the encrypted classes can easily be decrypted. 3. Convert to Native Codes Convert program to native codes..
android encryption/decryption with AES http://stackoverflow.com/questions/6788018/android-encryption-decryption-with-aes AES cipher.init Cipher.DECRYPT_MODE skeySpec byte decrypted cipher.doFinal encrypted return decrypted And invoke them like.. skeySpec byte decrypted cipher.doFinal encrypted return decrypted And invoke them like this ByteArrayOutputStream baos new ByteArrayOutputStream.. encrypt byte encryptedData encrypt key b decrypt byte decryptedData decrypt key encryptedData This should work I use similar..
What are best practices for using AES encryption in Android? http://stackoverflow.com/questions/8622367/what-are-best-practices-for-using-aes-encryption-in-android algorithm raise exceptions if the encrypted data cannot be decrypted Or is that insecure and it should just return an unreadable.. Cipher.DECRYPT_MODE secret ivspec byte decryptedText decryptionCipher.doFinal HexEncoder.toByte encryptedHex.. HexEncoder.toByte encryptedHex String decrypted new String decryptedText UTF 8 return decrypted catch Exception..
How to encrypt file from sd card using AES in Android? http://stackoverflow.com/questions/10782187/how-to-encrypt-file-from-sd-card-using-aes-in-android FileInputStream fis new FileInputStream data encrypted FileOutputStream fos new FileOutputStream data decrypted SecretKeySpec sks new SecretKeySpec MyDifficultPassw .getBytes AES Cipher cipher Cipher.getInstance AES cipher.init Cipher.DECRYPT_MODE.. cis.read d 1 fos.write d 0 b fos.flush fos.close cis.close After the execution of decrypt there should be a file named decrypted . This file contains the free text. Edit You write you're a noob but depending on the use case of encryption you could do..
Encryption error on Android 4.2 http://stackoverflow.com/questions/13383006/encryption-error-on-android-4-2 encrypt e.getMessage return null Decrypt a HEX encrypted string. br @param the HEX string to decrypt @return the decrypted string public static String decrypt String encrypted try byte enc fromHex encrypted byte result process Cipher.DECRYPT_MODE.. result should not be null encrypted assertTrue The encrypted result should not be empty encrypted.length 0 String decrypted UtilsEncryption.decrypt encrypted assertNotNull The decrypted result should not be null decrypted assertTrue The decrypted.. result should not be empty encrypted.length 0 String decrypted UtilsEncryption.decrypt encrypted assertNotNull The decrypted result should not be null decrypted assertTrue The decrypted result should not be empty decrypted.length 0 assertEquals..
Encryption compatable between Android and C# http://stackoverflow.com/questions/2090765/encryption-compatable-between-android-and-c-sharp for a way to handle encrypting using something like AES TripleDES etc. from Android and eventually wind up being decrypted in C#. I found an example for encoding AES in Android and encoding decoding AES in C# but am not sure if these are compatible..
How to view AndroidManifest.xml from APK file? http://stackoverflow.com/questions/4191762/how-to-view-androidmanifest-xml-from-apk-file will create and directory HelloWorld in your current directory. Inside it you can find the AndroidManifest.xml file in decrypted form and you can also find other XML files inside the HelloWorld res layout directory. Here HelloWorld.apk is your Android..
BouncyCastle AES error when upgrading to 1.45 http://stackoverflow.com/questions/4405334/bouncycastle-aes-error-when-upgrading-to-1-45 skeySpec new SecretKeySpec raw AES Cipher cipher Cipher.getInstance AES cipher.init Cipher.DECRYPT_MODE skeySpec byte decrypted cipher.doFinal encrypted When using BC 1.45 I get this exception javax.crypto.BadPaddingException pad block corrupted at..
hiding strings in Obfuscated code http://stackoverflow.com/questions/4427238/hiding-strings-in-obfuscated-code clearer the basic steps would be Manually create an encrypt your string using a known key. Convert your code to use a decrypted version of this string example Before public class Foo private String mySecret http example.com ... Becomes public class..
How to make apk Secure. Protecting from Decompile http://stackoverflow.com/questions/6235290/how-to-make-apk-secure-protecting-from-decompile classes the program needs to decrypt these classes first then loading these classes into JVM. These classes can be decrypted by hardware or software. Developers often loading cryptographic classes through a customed ClassLoader class Applet does.. of security . Customed ClassLoader will find cryptographic classes first then decrypt them. And finally loading the decrypted classes to JVM. Customed ClassLoader is a very important class in this protect method. Because it itself is not encrypted.. of a hacker. If the relevant decryption key and algorithm have been overcome then the encrypted classes can easily be decrypted. 3. Convert to Native Codes Convert program to native codes is also an effective way to prevent decompilation. Because native..
android encryption/decryption with AES http://stackoverflow.com/questions/6788018/android-encryption-decryption-with-aes skeySpec new SecretKeySpec raw AES Cipher cipher Cipher.getInstance AES cipher.init Cipher.DECRYPT_MODE skeySpec byte decrypted cipher.doFinal encrypted return decrypted And invoke them like this ByteArrayOutputStream baos new ByteArrayOutputStream.. cipher Cipher.getInstance AES cipher.init Cipher.DECRYPT_MODE skeySpec byte decrypted cipher.doFinal encrypted return decrypted And invoke them like this ByteArrayOutputStream baos new ByteArrayOutputStream bm.compress Bitmap.CompressFormat.PNG 100..
What are best practices for using AES encryption in Android? http://stackoverflow.com/questions/8622367/what-are-best-practices-for-using-aes-encryption-in-android the security a lot How do you implement it Should the algorithm raise exceptions if the encrypted data cannot be decrypted Or is that insecure and it should just return an unreadable string Can the algorithm use Bcrypt instead of SHA What about.. ivspec new IvParameterSpec HexEncoder.toByte ivHex decryptionCipher.init Cipher.DECRYPT_MODE secret ivspec byte decryptedText decryptionCipher.doFinal HexEncoder.toByte encryptedHex String decrypted new String decryptedText UTF 8 return decrypted.. Cipher.DECRYPT_MODE secret ivspec byte decryptedText decryptionCipher.doFinal HexEncoder.toByte encryptedHex String decrypted new String decryptedText UTF 8 return decrypted catch Exception e throw new CryptoException Unable to decrypt e public..
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