爪哇 - InvalidKeyException將使用AES/CBC/NoPadding

Question

當我切換到Cipher.getInstance("AES")當Cipher.getInstance("AES/CBC/NoPadding")我開始收到此錯誤：

12:18:20 [SEVERE] java.security.InvalidKeyException: No installed provider supports this key: javax.crypto.spec.SecretKeySpec 
    12:18:20 [SEVERE]  at javax.crypto.Cipher.chooseProvider(Cipher.java:878) 
    12:18:20 [SEVERE]  at javax.crypto.Cipher.init(Cipher.java:1213) 
    12:18:20 [SEVERE]  at javax.crypto.Cipher.init(Cipher.java:1153) 
    12:18:20 [SEVERE]  at net.azidea.bungee.netty.packet.codec.Encryption.decrypt(Encryption.java:52) 
    12:18:20 [SEVERE]  at net.azidea.bungee.netty.packet.codec.PacketDecrypter.decode(PacketDecrypter.java:20) 
    12:18:20 [SEVERE]  at net.azidea.bungee.netty.packet.codec.PacketDecrypter.decode(PacketDecrypter.java:12) 
    12:18:20 [SEVERE]  at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89) 
    12:18:20 [SEVERE]  at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333) 
    12:18:20 [SEVERE]  at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319) 
    12:18:20 [SEVERE]  at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:161) 
    12:18:20 [SEVERE]  at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333) 
    12:18:20 [SEVERE]  at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319) 
    12:18:20 [SEVERE]  at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) 
    12:18:20 [SEVERE]  at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333) 
    12:18:20 [SEVERE]  at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:319) 
    12:18:20 [SEVERE]  at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:787) 
    12:18:20 [SEVERE]  at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:130) 
    12:18:20 [SEVERE]  at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511) 
    12:18:20 [SEVERE]  at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468) 
    12:18:20 [SEVERE]  at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382) 
    12:18:20 [SEVERE]  at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354) 
    12:18:20 [SEVERE]  at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) 
    12:18:20 [SEVERE]  at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137) 
    12:18:20 [SEVERE]  at java.lang.Thread.run(Thread.java:745) 

解密時。它只用AES就沒問題（沒有「CBC/NoPadding」部分）。我改變了這一點，因爲不是我的所有數據包都是16字節的倍數。

key.getAlgorithm()的輸出是「AES」。

Decryption

public static ByteBuf decrypt(ByteBuf encrypted) 
{ 
    try 
    { 
     cipher.init(Cipher.DECRYPT_MODE, key); 
     return Unpooled.copiedBuffer(cipher.doFinal(NettyUtils.toArray(encrypted))); 
    } 
    catch(Exception e) 
    { 
     e.printStackTrace(); 
     System.out.println("[Netty] Error decrypting packet."); 
    } 

    return null; 
} 

Cipher

private static Cipher cipher; 
private static SecretKeySpec key; 

static 
{ 
    try 
    { 
     key = new SecretKeySpec(NettyServer.getSecretKey(), "AES"); 
     cipher = Cipher.getInstance("AES/CBC/NoPadding"); 
    } 
    catch(Exception e) 
    { 
     e.printStackTrace(); 
    } 
} 

Answer 1

指定構造一個IvParameterSpec固定的問題。