如何使用 System.Cryptography 解密 EncryptedAssertion

Question

身份提供者正在使用组件 pro 的功能加密 Saml 断言

Dim encryptedSamlAssertion As New EncryptedAssertion(samlAssertion, encryptingCert, New System.Security.Cryptography.Xml.EncryptionMethod(SamlKeyAlgorithm.Aes256Cbc))

在服务提供商处，我正在尝试解密断言。但是我不能使用component pro。我必须使用 System.Security.Cryptography

X509证书用于加解密
Aes256Cbc为加密算法

请帮助我提供更多有关如何实现 使用 X509Certificate 和 Aes256Cbc 算法解密 SamlAssertions 的信息

Answer 1

private class Saml2SSOSecurityTokenResolver : SecurityTokenResolver
{
    List<SecurityToken> _tokens;

    public Saml2SSOSecurityTokenResolver(List<SecurityToken> tokens)
    {
        _tokens = tokens;
    }
    protected override bool TryResolveSecurityKeyCore(System.IdentityModel.Tokens.SecurityKeyIdentifierClause keyIdentifierClause, out System.IdentityModel.Tokens.SecurityKey key)
    {
        var token = _tokens[0] as X509SecurityToken;

        var myCert = token.Certificate;

        key = null;

        var ekec = keyIdentifierClause as EncryptedKeyIdentifierClause;

        if (ekec != null)
        {
            if (ekec.EncryptionMethod == "http://www.w3.org/2001/04/xmlenc#rsa-1_5")
            {
                var encKey = ekec.GetEncryptedKey();
                var rsa = myCert.PrivateKey as RSACryptoServiceProvider;
                var decKey = rsa.Decrypt(encKey, false);
                key = new InMemorySymmetricSecurityKey(decKey);
                return true;
            }

            var data = ekec.GetEncryptedKey();
            var id = ekec.EncryptingKeyIdentifier;
        }

        return true;
    }

    protected override bool TryResolveTokenCore(System.IdentityModel.Tokens.SecurityKeyIdentifierClause keyIdentifierClause, out System.IdentityModel.Tokens.SecurityToken token)
    {
        throw new NotImplementedException();
    }

    protected override bool TryResolveTokenCore(System.IdentityModel.Tokens.SecurityKeyIdentifier keyIdentifier, out System.IdentityModel.Tokens.SecurityToken token)
    {
        throw new NotImplementedException();
    }
}

如何使用 System.Cryptography 解密 EncryptedAssertion

How to Decrypt EncryptedAssertion using System.Cryptography

.net

c#

x509certificate2

aescryptoserviceprovider

saml-2.0