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2014/10/16 ¤W¤È 08:23:49
android Programming Glossary: sha1prnghttp://stackoverflow.com/questions/11418336/java-simplecrypto-class-for-encryption-decryption-producing-different-results AES SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed kgen.init 128 sr 192 and 256 bits may not be.. seed to the state. Furthermore the exact implementation of SHA1PRNG has not been well defined. So different providers may use a..
Encryption error on Android 4.2 http://stackoverflow.com/questions/13383006/encryption-error-on-android-4-2 AES SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed KEY.getBytes kgen.init 128 sr SecretKey skey kgen.generateKey.. and Android 4.2 SecureRandom rand SecureRandom.getInstance SHA1PRNG Log.i TAG rand.getProvider rand.getProvider .getName On pre.. the old behavior SecureRandom sr SecureRandom.getInstance SHA1PRNG Crypto To be sure it's dangerous to be calling SecureRandom.setSeed..
Android 4.2 broke my AES encrypt/decrypt code http://stackoverflow.com/questions/13389870/android-4-2-broke-my-aes-encrypt-decrypt-code AES SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed try kgen.init 256 sr catch Exception e Log.w.. JELLY_BEAN_4_2 sr SecureRandom.getInstance SHA1PRNG Crypto else sr SecureRandom.getInstance SHA1PRNG sr.setSeed.. SHA1PRNG Crypto else sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed try kgen.init 256 sr kgen.init 128 sr catch..
Android 4.2 broke my encrypt/decrypt code and the provided solutions don't work http://stackoverflow.com/questions/13433529/android-4-2-broke-my-encrypt-decrypt-code-and-the-provided-solutions-dont-work JELLY_BEAN_4_2 sr SecureRandom.getInstance SHA1PRNG Crypto else sr SecureRandom.getInstance SHA1PRNG doesn't work.. SHA1PRNG Crypto else sr SecureRandom.getInstance SHA1PRNG doesn't work for me because when decoding data encrypted in.. AES SecureRandom secrand SecureRandom.getInstance SHA1PRNG secrand.setSeed seed.getBytes keygen.init 128 secrand SecretKey..
BouncyCastle AES error when upgrading to 1.45 http://stackoverflow.com/questions/4405334/bouncycastle-aes-error-when-upgrading-to-1-45 AES BC SecureRandom sr SecureRandom.getInstance SHA1PRNG Crypto sr.setSeed seed kgen.init 128 sr SecretKey skey kgen.generateKey.. because of a bug fix on line 320 in Gingerbread source of SHA1PRNG_SecureRandomImpl.java in the engineNextBytes method where bits..
Securing media files in the mobile http://stackoverflow.com/questions/6676574/securing-media-files-in-the-mobile AES final SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed kgen.init 128 sr 192 and 256 bits may not be..
android encryption/decryption with AES http://stackoverflow.com/questions/6788018/android-encryption-decryption-with-aes AES SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed keyStart kgen.init 128 sr 192 and 256 bits may not..
Encrypt with Node.js Crypto module and decrypt with Java (in Android app) http://stackoverflow.com/questions/7787773/encrypt-with-node-js-crypto-module-and-decrypt-with-java-in-android-app AES SecureRandom sr SecureRandom.getInstance SHA1PRNG byte seedBytes seed.getBytes sr.setSeed seedBytes kgen.init..
Encrypt and decrypt data for Android app-client http://stackoverflow.com/questions/8397213/encrypt-and-decrypt-data-for-android-app-client AES SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed kgen.init 128 sr 192 and 256 bits may not be..
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 100 private static final String RANDOM_ALGORITHM SHA1PRNG private static final String HASH_ALGORITHM SHA 512 private static.. AES SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed kgen.init 128 sr 192 and 256 bits may not be..
http://stackoverflow.com/questions/11418336/java-simplecrypto-class-for-encryption-decryption-producing-different-results byte seed throws Exception KeyGenerator kgen KeyGenerator.getInstance AES SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed kgen.init 128 sr 192 and 256 bits may not be available SecretKey skey kgen.generateKey byte raw skey.getEncoded.. in the latest versions of Android may simply add the seed to the state. Furthermore the exact implementation of SHA1PRNG has not been well defined. So different providers may use a different implementations. Please use SecureRandom instances..
Encryption error on Android 4.2 http://stackoverflow.com/questions/13383006/encryption-error-on-android-4-2 NoSuchAlgorithmException KeyGenerator kgen KeyGenerator.getInstance AES SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed KEY.getBytes kgen.init 128 sr SecretKey skey kgen.generateKey return skey.getEncoded Process the given input.. code will produce two different outputs on pre Android 4.2 and Android 4.2 SecureRandom rand SecureRandom.getInstance SHA1PRNG Log.i TAG rand.getProvider rand.getProvider .getName On pre 4.2 devices rand.getProvider Crypto On 4.2 devices rand.getProvider.. AndroidOpenSSL Fortunately it's easy to revert to the old behavior SecureRandom sr SecureRandom.getInstance SHA1PRNG Crypto To be sure it's dangerous to be calling SecureRandom.setSeed at all in light of the Javadocs which state Seeding..
Android 4.2 broke my AES encrypt/decrypt code http://stackoverflow.com/questions/13389870/android-4-2-broke-my-aes-encrypt-decrypt-code byte seed throws Exception KeyGenerator kgen KeyGenerator.getInstance AES SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed try kgen.init 256 sr catch Exception e Log.w LOG This device doesn't suppor 256bits trying 192bits. try.. AES SC SecureRandom sr null if android.os.Build.VERSION.SDK_INT JELLY_BEAN_4_2 sr SecureRandom.getInstance SHA1PRNG Crypto else sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed try kgen.init 256 sr kgen.init 128 sr catch Exception e.. JELLY_BEAN_4_2 sr SecureRandom.getInstance SHA1PRNG Crypto else sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed try kgen.init 256 sr kgen.init 128 sr catch Exception e Log.w LOG This device doesn't suppor 256bits trying..
Android 4.2 broke my encrypt/decrypt code and the provided solutions don't work http://stackoverflow.com/questions/13433529/android-4-2-broke-my-encrypt-decrypt-code-and-the-provided-solutions-dont-work provided solution SecureRandom sr null if android.os.Build.VERSION.SDK_INT JELLY_BEAN_4_2 sr SecureRandom.getInstance SHA1PRNG Crypto else sr SecureRandom.getInstance SHA1PRNG doesn't work for me because when decoding data encrypted in Android 4.2.. JELLY_BEAN_4_2 sr SecureRandom.getInstance SHA1PRNG Crypto else sr SecureRandom.getInstance SHA1PRNG doesn't work for me because when decoding data encrypted in Android 4.2 in Android 4.2 I get javax.crypto.BadPaddingException.. seed throws Exception KeyGenerator keygen KeyGenerator.getInstance AES SecureRandom secrand SecureRandom.getInstance SHA1PRNG secrand.setSeed seed.getBytes keygen.init 128 secrand SecretKey seckey keygen.generateKey byte rawKey seckey.getEncoded..
BouncyCastle AES error when upgrading to 1.45 http://stackoverflow.com/questions/4405334/bouncycastle-aes-error-when-upgrading-to-1-45 raw keys from a passphrase KeyGenerator kgen KeyGenerator.getInstance AES BC SecureRandom sr SecureRandom.getInstance SHA1PRNG Crypto sr.setSeed seed kgen.init 128 sr SecretKey skey kgen.generateKey byte raw skey.getEncoded What I have found is that.. this question I just finished tracking this down. It's because of a bug fix on line 320 in Gingerbread source of SHA1PRNG_SecureRandomImpl.java in the engineNextBytes method where bits seedLength 3 64 was changed to bits seedLength 3 64 Clearly..
Securing media files in the mobile http://stackoverflow.com/questions/6676574/securing-media-files-in-the-mobile try final KeyGenerator kgen KeyGenerator.getInstance AES final SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed kgen.init 128 sr 192 and 256 bits may not be available final SecretKey skey kgen.generateKey return skey.getEncoded..
android encryption/decryption with AES http://stackoverflow.com/questions/6788018/android-encryption-decryption-with-aes this is a key .getBytes KeyGenerator kgen KeyGenerator.getInstance AES SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed keyStart kgen.init 128 sr 192 and 256 bits may not be available SecretKey skey kgen.generateKey byte key skey.getEncoded..
Encrypt with Node.js Crypto module and decrypt with Java (in Android app) http://stackoverflow.com/questions/7787773/encrypt-with-node-js-crypto-module-and-decrypt-with-java-in-android-app String seed throws Exception KeyGenerator kgen KeyGenerator.getInstance AES SecureRandom sr SecureRandom.getInstance SHA1PRNG byte seedBytes seed.getBytes sr.setSeed seedBytes kgen.init 128 sr 192 and 256 bits may not be available SecretKey skey..
Encrypt and decrypt data for Android app-client http://stackoverflow.com/questions/8397213/encrypt-and-decrypt-data-for-android-app-client byte seed throws Exception KeyGenerator kgen KeyGenerator.getInstance AES SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed kgen.init 128 sr 192 and 256 bits may not be available SecretKey skey kgen.generateKey byte raw skey.getEncoded..
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 final int IV_LENGTH 16 public static final int PBE_ITERATION_COUNT 100 private static final String RANDOM_ALGORITHM SHA1PRNG private static final String HASH_ALGORITHM SHA 512 private static final String PBE_ALGORITHM PBEWithSHA256And256BitAES CBC.. byte seed throws Exception KeyGenerator kgen KeyGenerator.getInstance AES SecureRandom sr SecureRandom.getInstance SHA1PRNG sr.setSeed seed kgen.init 128 sr 192 and 256 bits may not be available SecretKey skey kgen.generateKey byte raw skey.getEncoded..
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