#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
#pragma warning disable
using System;

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto
{
	/// <summary>The interface stream ciphers conform to.</summary>
    public interface IStreamCipher
    {
		/// <summary>The name of the algorithm this cipher implements.</summary>
		string AlgorithmName { get; }

		/// <summary>Initialise the cipher.</summary>
		/// <param name="forEncryption">If true the cipher is initialised for encryption,
		/// if false for decryption.</param>
		/// <param name="parameters">The key and other data required by the cipher.</param>
		/// <exception cref="ArgumentException">
		/// If the parameters argument is inappropriate.
		/// </exception>
        void Init(bool forEncryption, ICipherParameters parameters);

		/// <summary>encrypt/decrypt a single byte returning the result.</summary>
		/// <param name="input">the byte to be processed.</param>
		/// <returns>the result of processing the input byte.</returns>
        byte ReturnByte(byte input);

        /// <summary>
        /// Process a block of bytes from <paramref name="input"/>, putting the result into <paramref name="output"/>.
        /// </summary>
        /// <param name="input">The input byte array.</param>
        /// <param name="inOff">
        /// The offset into <c>input</c> where the data to be processed starts.
        /// </param>
        /// <param name="length">The number of bytes to be processed.</param>
        /// <param name="output">The output buffer the processed bytes go into.</param>
        /// <param name="outOff">
        /// The offset into <c>output</c> the processed data starts at.
        /// </param>
        /// <exception cref="DataLengthException">If the input buffer is too small.</exception>
        /// <exception cref="OutputLengthException">If the output buffer is too small.</exception>
        void ProcessBytes(byte[] input, int inOff, int length, byte[] output, int outOff);

#if NETCOREAPP2_1_OR_GREATER || NETSTANDARD2_1_OR_GREATER || _UNITY_2021_2_OR_NEWER_
        /// <summary>
        /// Process a block of bytes from <paramref name="input"/>, putting the result into <paramref name="output"/>.
        /// </summary>
		/// <param name="input">The input span.</param>
		/// <param name="output">The output span.</param>
        /// <exception cref="OutputLengthException">If the output span is too small.</exception>
        void ProcessBytes(ReadOnlySpan<byte> input, Span<byte> output);
#endif

        /// <summary>
        /// Reset the cipher to the same state as it was after the last init (if there was one).
        /// </summary>
        void Reset();
    }
}
#pragma warning restore
#endif