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73 lines
3.9 KiB
73 lines
3.9 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 System.IO;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Tls.Crypto
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{
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/// <summary>Interface supporting the generation of key material and other SSL/TLS secret values from PRFs.
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/// </summary>
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public interface TlsSecret
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{
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/// <summary>Calculate an HMAC with this secret's data as the key.</summary>
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/// <param name="cryptoHashAlgorithm">the hash algorithm to instantiate HMAC with. See
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/// <see cref="CryptoHashAlgorithm"/> for values.</param>
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/// <param name="buf">array containing the input data.</param>
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/// <param name="off">offset into the input array the input starts at.</param>
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/// <param name="len">the length of the input data.</param>
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byte[] CalculateHmac(int cryptoHashAlgorithm, byte[] buf, int off, int len);
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/// <summary>Return a new secret based on applying a PRF to this one.</summary>
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/// <param name="prfAlgorithm">PRF algorithm to use.</param>
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/// <param name="label">the label details.</param>
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/// <param name="seed">the seed details.</param>
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/// <param name="length">the size (in bytes) of the secret to generate.</param>
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/// <returns>the new secret.</returns>
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TlsSecret DeriveUsingPrf(int prfAlgorithm, string label, byte[] seed, int length);
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/// <summary>Destroy the internal state of the secret.</summary>
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/// <remarks>
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/// After this call, any attempt to use the <see cref="TlsSecret"/> will result in an
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/// <see cref="InvalidOperationException"/> being thrown.
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/// </remarks>
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void Destroy();
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/// <summary>Return an encrypted copy of the data this secret is based on.</summary>
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/// <param name="encryptor">the encryptor to use for protecting the internal data.</param>
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/// <returns>an encrypted copy of this secret's internal data.</returns>
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/// <exception cref="IOException"/>
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byte[] Encrypt(TlsEncryptor encryptor);
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/// <summary>Return the internal data from this secret.</summary>
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/// <remarks>
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/// The <see cref="TlsSecret"/> does not keep a copy of the data. After this call, any attempt to use the
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/// <see cref="TlsSecret"/> will result in an <see cref="InvalidOperationException"/> being thrown.
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/// </remarks>
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/// <returns>the secret's internal data.</returns>
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byte[] Extract();
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/// <summary>RFC 5869 HKDF-Expand function, with this secret's data as the pseudo-random key ('prk').</summary>
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/// <param name="cryptoHashAlgorithm">the hash algorithm to instantiate HMAC with. See
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/// <see cref="CryptoHashAlgorithm"/> for values.</param>
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/// <param name="info">optional context and application specific information (can be zero-length).</param>
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/// <param name="length">length of output keying material in octets.</param>
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/// <returns> output keying material (of 'length' octets).</returns>
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TlsSecret HkdfExpand(int cryptoHashAlgorithm, byte[] info, int length);
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/// <summary>RFC 5869 HKDF-Extract function, with this secret's data as the 'salt'.</summary>
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/// <remarks>
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/// The <see cref="TlsSecret"/> does not keep a copy of the data. After this call, any attempt to use
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/// the <see cref="TlsSecret"/> will result in an <see cref="InvalidOperationException"/> being thrown.
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/// </remarks>
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/// <param name="cryptoHashAlgorithm">the hash algorithm to instantiate HMAC with. See
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/// <see cref="CryptoHashAlgorithm"/> for values.</param>
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/// <param name="ikm">input keying material.</param>
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/// <returns>a pseudo-random key (of HashLen octets).</returns>
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TlsSecret HkdfExtract(int cryptoHashAlgorithm, TlsSecret ikm);
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bool IsAlive();
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}
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}
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#pragma warning restore
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#endif
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