Example usage for android.util Base64 decode

Introduction

In this page you can find the example usage for android.util Base64 decode.

Prototype

public static byte[] decode(byte[] input, int flags)

Source Link

Document

Decode the Base64-encoded data in input and return the data in a new byte array.

Usage

From source file:Main.java

static public String decodeToSgtring(byte[] code) {
    if (code == null || code.length == 0) {
        return "";
    }/*from w w w  .  j av  a 2s  . com*/
    return new String(Base64.decode(code, Base64.NO_WRAP));
}

From source file:Main.java

/**
 * Decodes a Base64 string into a Bitmap. Used to decode Bitmaps encoded by
 * {@link encodeBitmapAsString(Bitmap)}.
 * @param encodedString the Base64 String to decode.
 * @return the Bitmap which was encoded by the String.
 *///w  ww  .  j  ava  2s .c  om
public static Bitmap decodeBitmapFromString(String encodedString) {
    if (TextUtils.isEmpty(encodedString))
        return null;
    byte[] decoded = Base64.decode(encodedString, Base64.DEFAULT);
    return BitmapFactory.decodeByteArray(decoded, 0, decoded.length);
}

From source file:Main.java

public static String decryptData(String ciphertext, String password) throws Exception {
    int iterationCount = 100; //because polaroid
    int keyLength = 256;

    String[] fields = ciphertext.split("]");
    byte[] iv = Base64.decode(fields[0], 0);
    byte[] salt = Base64.decode(fields[1], 0);
    byte[] cipherBytes = Base64.decode(fields[2], 0);

    Log.d(TAG, "ciphertext: " + ciphertext + "\n" + "iv length is " + "\n" + iv.length);

    KeySpec keySpec = new PBEKeySpec(password.toCharArray(), salt, iterationCount, keyLength);
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
    byte[] keyBytes = keyFactory.generateSecret(keySpec).getEncoded();
    SecretKey key = new SecretKeySpec(keyBytes, "AES");

    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    IvParameterSpec ivParams = new IvParameterSpec(iv);
    cipher.init(Cipher.DECRYPT_MODE, key, ivParams);
    byte[] plaintext = cipher.doFinal(cipherBytes);
    String plainStr = new String(plaintext, "UTF-8");

    return plainStr;
}

From source file:Main.java

private static byte[] base64Decode(byte[] input) {
    return Base64.decode(input, Base64.NO_WRAP);
}

From source file:Main.java

static byte[] decodeB64NP(String s64) {
    return Base64.decode(s64, Base64.NO_PADDING);
}

From source file:Main.java

public static byte[] decodeBase64(byte[] input) {
    return Base64.decode(input, Base64.DEFAULT);
}

From source file:Main.java

public static String base64Decode(String str) {
    return Base64.decode(str.getBytes(), Base64.DEFAULT).toString();
}

From source file:Main.java

public static String decodeBase64(String s) {
    return new String(Base64.decode(s, Base64.DEFAULT));
}

From source file:Main.java

/**
 * Return a byte[] containing the bytes in a given base64 string, or null if this is not a valid
 * base64 string./*  w  ww  .j  a  v  a 2s.c  o  m*/
 */
public static byte[] getBytesFromBase64(String base64) {
    try {
        return Base64.decode(base64, Base64.DEFAULT);
    } catch (Exception e) {
        Log.e(LOGTAG, "exception decoding bitmap from data URI: " + base64, e);
    }

    return null;
}

From source file:Main.java

public static byte[] readByteArrayAttribute(XmlPullParser in, String name) {
    final String value = in.getAttributeValue(null, name);
    if (value != null) {
        return Base64.decode(value, Base64.DEFAULT);
    } else {//  w  w  w .j  a  v a  2  s . c  om
        return null;
    }
}