46 lines
1.9 KiB
C#
46 lines
1.9 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.Engines;
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using Best.HTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
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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>Operator supporting the verification of RSASSA-PSS signatures using the BC light-weight API.</summary>
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public class BcTlsRsaPssVerifier
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: BcTlsVerifier
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{
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private readonly int m_signatureScheme;
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public BcTlsRsaPssVerifier(BcTlsCrypto crypto, RsaKeyParameters publicKey, int signatureScheme)
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: base(crypto, publicKey)
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{
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if (!SignatureScheme.IsRsaPss(signatureScheme))
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throw new ArgumentException("signatureScheme");
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this.m_signatureScheme = signatureScheme;
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}
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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 || SignatureScheme.From(algorithm) != m_signatureScheme)
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throw new InvalidOperationException("Invalid algorithm: " + algorithm);
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int cryptoHashAlgorithm = SignatureScheme.GetCryptoHashAlgorithm(m_signatureScheme);
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IDigest digest = m_crypto.CreateDigest(cryptoHashAlgorithm);
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PssSigner verifier = PssSigner.CreateRawSigner(new RsaEngine(), digest, digest, digest.GetDigestSize(),
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PssSigner.TrailerImplicit);
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verifier.Init(false, m_publicKey);
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verifier.BlockUpdate(hash, 0, hash.Length);
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return verifier.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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