本文整理了Java中javax.crypto.Cipher.getOutputSize()方法的一些代码示例，展示了Cipher.getOutputSize()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Cipher.getOutputSize()方法的具体详情如下：
包路径：javax.crypto.Cipher
类名称：Cipher
方法名：getOutputSize

Cipher.getOutputSize介绍

[英]Returns the length in bytes an output buffer needs to be when this cipher is updated with inputLen bytes.
[中]返回使用inputLen字节更新此密码时输出缓冲区需要的字节长度。

代码示例

代码示例来源：origin: aws/aws-sdk-java

int getOutputSize(int inputLen) {
    return cipher.getOutputSize(inputLen);
  }
}

代码示例来源：origin: apache/usergrid

public static ByteBuffer decrypt( ByteBuffer encrypted ) {
  if ( encrypted == null || !encrypted.hasRemaining() ) {
    return encrypted;
  }
  try {
    SecretKeySpec sKeySpec = new SecretKeySpec( getRawKey( encryptionSeed ), "AES" );
    Cipher cipher = Cipher.getInstance( "AES" );
    cipher.init( Cipher.DECRYPT_MODE, sKeySpec );
    ByteBuffer decrypted = ByteBuffer.allocate( cipher.getOutputSize( encrypted.remaining() ) );
    cipher.doFinal( encrypted, decrypted );
    decrypted.rewind();
    return decrypted;
  }
  catch ( Exception e ) {
    throw new IllegalStateException( e );
  }
}

代码示例来源：origin: apache/usergrid

public static ByteBuffer encrypt( ByteBuffer clear ) {
  if ( clear == null || !clear.hasRemaining() ) {
    return clear;
  }
  try {
    SecretKeySpec sKeySpec = new SecretKeySpec( getRawKey( encryptionSeed ), "AES" );
    Cipher cipher = Cipher.getInstance( "AES" );
    cipher.init( Cipher.ENCRYPT_MODE, sKeySpec );
    ByteBuffer encrypted = ByteBuffer.allocate( cipher.getOutputSize( clear.remaining() ) );
    cipher.doFinal( clear, encrypted );
    encrypted.rewind();
    return encrypted;
  }
  catch ( Exception e ) {
    throw new IllegalStateException( e );
  }
}

代码示例来源：origin: apache/pulsar

private ByteBuf decryptData(SecretKey dataKeySecret, MessageMetadata msgMetadata, ByteBuf payload) {
  // unpack iv and encrypted data
  ByteString ivString = msgMetadata.getEncryptionParam();
  ivString.copyTo(iv, 0);
  GCMParameterSpec gcmParams = new GCMParameterSpec(tagLen, iv);
  ByteBuf targetBuf = null;
  try {
    cipher.init(Cipher.DECRYPT_MODE, dataKeySecret, gcmParams);
    ByteBuffer sourceNioBuf = payload.nioBuffer(payload.readerIndex(), payload.readableBytes());
    int maxLength = cipher.getOutputSize(payload.readableBytes());
    targetBuf = PooledByteBufAllocator.DEFAULT.buffer(maxLength, maxLength);
    ByteBuffer targetNioBuf = targetBuf.nioBuffer(0, maxLength);
    int decryptedSize = cipher.doFinal(sourceNioBuf, targetNioBuf);
    targetBuf.writerIndex(decryptedSize);
  } catch (InvalidKeyException | InvalidAlgorithmParameterException | IllegalBlockSizeException
      | BadPaddingException | ShortBufferException e) {
    log.error("{} Failed to decrypt message {}", logCtx, e.getMessage());
    if (targetBuf != null) {
      targetBuf.release();
      targetBuf = null;
    }
  }
  return targetBuf;
}

代码示例来源：origin: robovm/robovm

int outputSize = cipher.getOutputSize(inputBuffer.length);
if ((outputBuffer == null) || (outputBuffer.length < outputSize)) {
  this.outputBuffer = new byte[outputSize];

代码示例来源：origin: apache/pulsar

int maxLength = cipher.getOutputSize(payload.readableBytes());
targetBuf = PooledByteBufAllocator.DEFAULT.buffer(maxLength, maxLength);
ByteBuffer targetNioBuf = targetBuf.nioBuffer(0, maxLength);

代码示例来源：origin: aws-amplify/aws-sdk-android

int getOutputSize(int inputLen) {
    return cipher.getOutputSize(inputLen);
  }
}

代码示例来源：origin: SpigotMC/BungeeCord

@Override
public void cipher(ByteBuf in, ByteBuf out) throws ShortBufferException
{
  int readableBytes = in.readableBytes();
  byte[] heapIn = bufToByte( in );
  byte[] heapOut = heapOutLocal.get();
  int outputSize = cipher.getOutputSize( readableBytes );
  if ( heapOut.length < outputSize )
  {
    heapOut = new byte[ outputSize ];
    heapOutLocal.set( heapOut );
  }
  out.writeBytes( heapOut, 0, cipher.update( heapIn, 0, readableBytes, heapOut ) );
}

代码示例来源：origin: SpigotMC/BungeeCord

@Override
public ByteBuf cipher(ChannelHandlerContext ctx, ByteBuf in) throws ShortBufferException
{
  int readableBytes = in.readableBytes();
  byte[] heapIn = bufToByte( in );
  ByteBuf heapOut = ctx.alloc().heapBuffer( cipher.getOutputSize( readableBytes ) );
  heapOut.writerIndex( cipher.update( heapIn, 0, readableBytes, heapOut.array(), heapOut.arrayOffset() ) );
  return heapOut;
}

代码示例来源：origin: stackoverflow.com

byte[] cipherText = new byte[cipher.getOutputSize(input.length)];
int ctLength = cipher.update(input, 0, input.length, cipherText, 0);
ctLength += cipher.doFinal(cipherText, ctLength);
byte[] plainText = new byte[cipher.getOutputSize(ctLength)];
int ptLength = cipher.update(cipherText, 0, ctLength, plainText, 0);
ptLength += cipher.doFinal(plainText, ptLength);

代码示例来源：origin: ibinti/bugvm

/**
 * Returns the minimal possible size of the
 * Generic[Stream|Block]Cipher structure under this
 * connection state.
 */
protected int getMinFragmentSize() {
  // block ciphers return value with padding included
  return encCipher.getOutputSize(1+hash_size); // 1 byte for data
}

代码示例来源：origin: com.bugvm/bugvm-rt

/**
 * Returns the minimal upper bound of the content size enclosed
 * into the Generic[Stream|Block]Cipher structure of specified size.
 * For stream ciphers the returned value will be exact value.
 */
protected int getContentSize(int generic_cipher_size) {
  //it does not take the padding of block ciphered structures
  //into account (so returned value can be greater than actual)
  return decCipher.getOutputSize(generic_cipher_size)-hash_size;
}

代码示例来源：origin: com.bugvm/bugvm-rt

/**
 * Returns the minimal possible size of the
 * Generic[Stream|Block]Cipher structure under this
 * connection state.
 */
protected int getMinFragmentSize() {
  // block ciphers return value with padding included
  return encCipher.getOutputSize(1+hash_size); // 1 byte for data
}

代码示例来源：origin: com.bugvm/bugvm-rt

/**
 * Returns the size of the Generic[Stream|Block]Cipher structure
 * corresponding to the content data of specified size.
 */
protected int getFragmentSize(int content_size) {
  return encCipher.getOutputSize(content_size+hash_size);
}

代码示例来源：origin: ibinti/bugvm

/**
 * Returns the size of the Generic[Stream|Block]Cipher structure
 * corresponding to the content data of specified size.
 */
protected int getFragmentSize(int content_size) {
  return encCipher.getOutputSize(content_size+hash_size);
}

代码示例来源：origin: ibinti/bugvm

/**
 * Returns the minimal upper bound of the content size enclosed
 * into the Generic[Stream|Block]Cipher structure of specified size.
 * For stream ciphers the returned value will be exact value.
 */
protected int getContentSize(int generic_cipher_size) {
  //it does not take the padding of block ciphered structures
  //into account (so returned value can be greater than actual)
  return decCipher.getOutputSize(generic_cipher_size)-hash_size;
}

代码示例来源：origin: i2p/i2p.i2p-bote

protected byte[] decryptAes(byte[] data, byte[] key, byte[] iv) throws GeneralSecurityException {
    SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
    IvParameterSpec ivps = new IvParameterSpec(iv, 0, 16);
    aesCipher.init(Cipher.DECRYPT_MODE, keySpec, ivps, appContext.random());

    byte[] decryptedData = new byte[aesCipher.getOutputSize(data.length)];
    int decLen = aesCipher.doFinal(data, 0, data.length, decryptedData, 0);
    byte[] ret = new byte[decLen];
    System.arraycopy(decryptedData, 0, ret, 0, decLen);
    return ret;
  }
}

代码示例来源：origin: EngineHub/CommandHelper

public char[] getDecryptedCharArray() {
  try {
    byte[] decrypted = new byte[decrypter.getOutputSize(encLength)];
    int decLen = decrypter.update(encrypted, 0, encLength, decrypted, 0);
    decrypter.doFinal(decrypted, decLen);
    decrypted = ArrayUtils.slice(decrypted, 0, actualLength - 1);
    return ArrayUtils.bytesToChar(decrypted);
  } catch (ShortBufferException | IllegalBlockSizeException | BadPaddingException ex) {
    throw new RuntimeException(ex);
  }
}

代码示例来源：origin: voxelwind/voxelwind

@Override
public ByteBuf cipher(ChannelHandlerContext ctx, ByteBuf in) throws ShortBufferException
{
  int readableBytes = in.readableBytes();
  byte[] heapIn = bufToByte( in );
  ByteBuf heapOut = ctx.alloc().heapBuffer( cipher.getOutputSize( readableBytes ) );
  heapOut.writerIndex( cipher.update( heapIn, 0, readableBytes, heapOut.array(), heapOut.arrayOffset() ) );
  return heapOut;
}

代码示例来源：origin: VelocityPowered/Velocity

@Override
public ByteBuf process(ChannelHandlerContext ctx, ByteBuf source) throws ShortBufferException {
 ensureNotDisposed();
 int inBytes = source.readableBytes();
 ByteBuf asHeapBuf = asHeapBuf(source);
 ByteBuf out = ctx.alloc().heapBuffer(cipher.getOutputSize(inBytes));
 out.writerIndex(cipher.update(asHeapBuf.array(), asHeapBuf.arrayOffset(), inBytes, out.array(),
   out.arrayOffset()));
 return out;
}