Examples of org.bouncycastle.crypto.BlockCipher.processBlock()

Class org.bouncycastle.crypto.BlockCipher

Examples of org.bouncycastle.crypto.BlockCipher.processBlock()

org.bouncycastle.crypto.BlockCipher.processBlock()
Process one block of input from the array in and write it to the out array. @param in the array containing the input data. @param inOff offset into the in array the data starts at. @param out the array the output data will be copied into. @param outOff the offset into the out array the output will start at. @exception DataLengthException if there isn't enough data in in, orspace in out. @exception IllegalStateException if the cipher isn't initialised. @return the number of bytes processed and produced.

        {
            output = new byte[inLen + macSize];


            calculateMac(in, inOff, inLen, macBlock);


            ctrCipher.processBlock(macBlock, 0, macBlock, 0);   // S0


            while (index < inLen - blockSize)                   // S1...
            {
                ctrCipher.processBlock(in, index, output, outOff);
                outOff += blockSize;

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            ctrCipher.processBlock(macBlock, 0, macBlock, 0);   // S0


            while (index < inLen - blockSize)                   // S1...
            {
                ctrCipher.processBlock(in, index, output, outOff);
                outOff += blockSize;
                index += blockSize;
            }


            byte[] block = new byte[blockSize];

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            byte[] block = new byte[blockSize];


            System.arraycopy(in, index, block, 0, inLen - index);


            ctrCipher.processBlock(block, 0, block, 0);


            System.arraycopy(block, 0, output, outOff, inLen - index);


            outOff += inLen - index;

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        {
            output = new byte[inLen - macSize];


            System.arraycopy(in, inOff + inLen - macSize, macBlock, 0, macSize);


            ctrCipher.processBlock(macBlock, 0, macBlock, 0);


            for (int i = macSize; i != macBlock.length; i++)
            {
                macBlock[i] = 0;
            }

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                macBlock[i] = 0;
            }


            while (outOff < output.length - blockSize)
            {
                ctrCipher.processBlock(in, index, output, outOff);
                outOff += blockSize;
                index += blockSize;
            }


            byte[] block = new byte[blockSize];

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            byte[] block = new byte[blockSize];


            System.arraycopy(in, index, block, 0, output.length - outOff);


            ctrCipher.processBlock(block, 0, block, 0);


            System.arraycopy(block, 0, output, outOff, output.length - outOff);


            byte[] calculatedMacBlock = new byte[blockSize];

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            cbc.init(false, new KeyParameter(key));


            //translate bytes
            int nextBlockSize;
            for(int i=0;i<ELength;i=i+nextBlockSize){
                cbc.processBlock(rawValue, i, returnKey, i);
                nextBlockSize=cbc.getBlockSize();
            }
            
        }catch(Exception e){
            throw new PdfSecurityException("Exception "+e.getMessage()+" with v5 encoding");

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            out = new byte[inLen + macSize];
            
            calculateMac(in, inOff, inLen, macBlock);
            
            ctrCipher.processBlock(macBlock, 0, macBlock, 0);   // S0
            
            while (index < inLen - blockSize)                   // S1...
            {
                ctrCipher.processBlock(in, index, out, outOff);
                outOff += blockSize;

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            ctrCipher.processBlock(macBlock, 0, macBlock, 0);   // S0
            
            while (index < inLen - blockSize)                   // S1...
            {
                ctrCipher.processBlock(in, index, out, outOff);
                outOff += blockSize;
                index += blockSize;
            }
            
            byte[] block = new byte[blockSize];

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            byte[] block = new byte[blockSize];
            
            System.arraycopy(in, index, block, 0, inLen - index);
            
            ctrCipher.processBlock(block, 0, block, 0);
            
            System.arraycopy(block, 0, out, outOff, inLen - index);
            
            outOff += inLen - index;

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