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81 lines
1.9 KiB
81 lines
1.9 KiB
1 year ago
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#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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#pragma warning disable
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using System;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Security;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Paddings
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{
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/**
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* A padder that adds ISO10126-2 padding to a block.
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*/
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public class ISO10126d2Padding: IBlockCipherPadding
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{
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private SecureRandom random;
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/**
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* Initialise the padder.
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*
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* @param random a SecureRandom if available.
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*/
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public void Init(
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SecureRandom random)
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//throws ArgumentException
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{
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this.random = (random != null) ? random : new SecureRandom();
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}
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/**
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* Return the name of the algorithm the cipher implements.
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*
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* @return the name of the algorithm the cipher implements.
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*/
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public string PaddingName
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{
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get { return "ISO10126-2"; }
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}
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/**
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* add the pad bytes to the passed in block, returning the
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* number of bytes added.
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*/
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public int AddPadding(
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byte[] input,
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int inOff)
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{
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byte code = (byte)(input.Length - inOff);
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while (inOff < (input.Length - 1))
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{
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input[inOff] = (byte)random.NextInt();
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inOff++;
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}
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input[inOff] = code;
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return code;
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}
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/**
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* return the number of pad bytes present in the block.
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*/
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public int PadCount(byte[] input)
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//throws InvalidCipherTextException
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{
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int count = input[input.Length - 1] & 0xff;
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if (count > input.Length)
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{
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throw new InvalidCipherTextException("pad block corrupted");
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}
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return count;
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}
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}
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}
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#pragma warning restore
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#endif
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