48 lines
1.7 KiB
C#
48 lines
1.7 KiB
C#
#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 Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto;
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using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Digests;
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using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Signers;
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namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Tls.Crypto.Impl.BC
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{
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/// <summary>BC light-weight base class for the verifiers supporting the two DSA style algorithms from FIPS PUB
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/// 186-4: DSA and ECDSA.</summary>
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public abstract class BcTlsDssVerifier
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: BcTlsVerifier
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{
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protected BcTlsDssVerifier(BcTlsCrypto crypto, AsymmetricKeyParameter publicKey)
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: base(crypto, publicKey)
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{
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}
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protected abstract IDsa CreateDsaImpl();
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protected abstract short SignatureAlgorithm { get; }
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public override bool VerifyRawSignature(DigitallySigned digitallySigned, byte[] hash)
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{
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SignatureAndHashAlgorithm algorithm = digitallySigned.Algorithm;
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if (algorithm != null && algorithm.Signature != SignatureAlgorithm)
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throw new InvalidOperationException("Invalid algorithm: " + algorithm);
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ISigner signer = new DsaDigestSigner(CreateDsaImpl(), new NullDigest());
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signer.Init(false, m_publicKey);
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if (algorithm == null)
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{
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// Note: Only use the SHA1 part of the (MD5/SHA1) hash
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signer.BlockUpdate(hash, 16, 20);
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}
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else
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{
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signer.BlockUpdate(hash, 0, hash.Length);
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}
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return signer.VerifySignature(digitallySigned.Signature);
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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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