Walter.Cypher 2025.4.17.1600

Prefix Reserved
.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. 
dotnet add package Walter.Cypher --version 2025.4.17.1600
                    


                    

                
NuGet\Install-Package Walter.Cypher -Version 2025.4.17.1600
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Walter.Cypher" Version="2025.4.17.1600" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Walter.Cypher" Version="2025.4.17.1600" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Walter.Cypher" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Walter.Cypher --version 2025.4.17.1600
                    


                    

                
#r "nuget: Walter.Cypher, 2025.4.17.1600"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#addin nuget:?package=Walter.Cypher&version=2025.4.17.1600
                    


                            Install Walter.Cypher as a Cake Addin
                        

                    

                
#tool nuget:?package=Walter.Cypher&version=2025.4.17.1600
                    


                            Install Walter.Cypher as a Cake Tool

WALTER

Introducing the WALTER Framework: Workable Algorithms for Location-aware Transmission, Encryption Response. Designed for modern developers, WALTER is a groundbreaking suite of NuGet packages crafted for excellence in .NET Standard 2.0, 2.1, Core 3.1, and .NET 6, 7, 8, as well as C++ environments. By integrating Delphi's native development strengths, we�ve enhanced WALTER�s encryption capabilities to be not only robust but also future-proof, ensuring that it excels in performance, stability, and cross-platform support.

Whether you're tackling networking, encryption, or secure communication, WALTER offers unparalleled efficiency and precision in processing, making it an essential tool for developers who prioritize speed, security, and memory management in their applications.

About this Walter.Cypher Nuget Package

The Walter.Cypher package is a testament to our commitment to providing developers with state-of-the-art cryptographic capabilities. By leveraging Delphi�s potent native development environment, we�ve engineered the package to offer hashing, symmetric, and asymmetric encryption methods that are secure, efficient, and cross-platform. This ensures that data encrypted with Walter.Cypher remains secure against both current and emergent cyber threats, including those posed by quantum computing advancements.

For detailed insights into how Delphi underpins our cryptographic solutions, offering a blend of speed, efficiency, and future-readiness, refer to the DelphiInside.md document. This document elaborates on our strategic choice of Delphi for native calls and AoT compilation, ensuring that the Walter.Cypher package delivers exceptional performance and security across all platforms.

Online documentation and sample code are available to help you integrate Walter.Cypher into your projects seamlessly.

Walter.Cypher

This repository showcases how to utilize the Walter.Cypher NuGet package effectively in your projects with minimal code snippets.

Walter.Web.CypherTests sample code

This sample code shows the use of

  1. Fixed cypher using a password to protect your code.
  2. Generating checksum for tamper detection.
  3. PGP using various key strengths to protect data
  4. The use of Numeric encryption that can be used to defeat base64 scanning tools to detect cyphered constants for password probing as values can be stored in int64 type values

Get Started

Show how to cipher large amounts of text using the Crypto class


[TestMethod()]
public void CipherZip()
{
    var sb = new StringBuilder();
    for (var i = 0; i < 1024; i++)
    {
        sb.Append(DateTime.Now.ToString());
    }
    var test = sb.ToString();

    var cypkered = Crypto.Zip(test);
    var expect = Crypto.UnZip(cypkered);
    Assert.AreEqual(test, expect);
}

Alternatively you can use the extension method

[TestMethod()]
public void CypherExtesnionTest()
{
    var testpw = "65654616540546546";
    var cypher = Environment.MachineName.Encrypt(testpw);
    var clear = cypher.Decrypt(testpw);

    Assert.AreEqual(Environment.MachineName, clear);
}

The extension method for cypher also allow encryption using public/private key encryption using certificates for text of any length

[TestMethod]
public void TestSmallStringAsBytes()
{
    using X509Certificate2 encryptCertificate = GetCert(".cer");
    using X509Certificate2 decryptCertificate = GetCert(".pfx", "01234456");

    var certCypher = Environment.MachineName.AsEncryptedBytes(encryptCertificate);
    var clearBytes = certCypher.AsDecryptFromBytes(decryptCertificate);

    Assert.AreEqual(Environment.MachineName, UTF8Encoding.UTF8.GetString(clearBytes));

    // helper method load embedded test certificate resource from assembly
    static X509Certificate2 GetCert(string extension, string password = null)
    {
        var asam = Assembly.GetExecutingAssembly();
        using (var memory = new MemoryStream())
        using (var stream = asam.GetManifestResourceStream(asam.GetManifestResourceNames().First(f => f.EndsWith(extension))))
        {
            stream.CopyTo(memory);
            return new X509Certificate2(memory.ToArray(), password);
        }
    }
}

[TestMethod]
public void TestLargeStringAsBytes()
{
    using X509Certificate2 encryptCertificate = GetCert(".cer");
    using X509Certificate2 cecryptCertificate = GetCert(".pfx","01234456");

    var sb = new StringBuilder();
    for (int i = 0; i < 100; i++)
    {
        sb.Append(Guid.NewGuid());
    }
    var text = sb.ToString();

    var certCypher = text.AsEncryptedBytes(encryptCertificate);
    Assert.AreNotEqual(certCypher.Length, text.Length);

    var clearBytes = certCypher.AsDecryptFromBytes(cecryptCertificate);
    Assert.AreEqual(text, UTF8Encoding.UTF8.GetString(clearBytes));

    X509Certificate2 GetCert(string extension, string password = null)
    {
        var asam = Assembly.GetExecutingAssembly();
        using (var memory = new MemoryStream())
        using (var stream = asam.GetManifestResourceStream(asam.GetManifestResourceNames().First(f => f.EndsWith(extension))))
        {
            stream!.CopyTo(memory);
            return new X509Certificate2(memory.ToArray(), password);
        }
    }
}

You also have the possibility to encrypt and decrypt persisted text based on the hosting machine, user executing the application, the application or process name this feature works on all platforms that support where that support the concept of users, processes and machine names in .NET and is ideal for storing secure data in memory that should not be possible to access when creating an application dump file but should survive a reboot.

There are some limitations on some IOT devices that might prevent you from using these features

public void RoundTrip_EncryptionScope_Process()
{
    var sb = new StringBuilder();
    for (int i = 0; i < 100; i++)
    {
        sb.Append(Guid.NewGuid());
    }
    var text = sb.ToString();

    var certCypher = text.AsEncryptedBytes(scope: EncryptionScope.Process);
    Assert.AreNotEqual(certCypher.Length, text.Length);

    var clearText = certCypher.AsDecryptFromBytes(scope: EncryptionScope.Process);
    Assert.AreEqual(text, clearText);

}

[TestMethod()]
public void RoundTrip_EncryptionScope_User()
{
    var sb = new StringBuilder();
    for (int i = 0; i < 100; i++)
    {
        sb.Append(Guid.NewGuid());
    }
    var text = sb.ToString();

    var certCypher = text.AsEncryptedBytes(scope: EncryptionScope.User);
    Assert.AreNotEqual(certCypher.Length, text.Length);

    var clearText = certCypher.AsDecryptFromBytes(scope: EncryptionScope.User);
    Assert.AreEqual(text, clearText);
}

[TestMethod()]
public void RoundTrip_EncryptionScope_Machine()
{
    var sb = new StringBuilder();
    for (int i = 0; i < 100; i++)
    {
        sb.Append(Guid.NewGuid());
    }
    var text = sb.ToString();

    var certCypher = text.AsEncryptedBytes(scope: EncryptionScope.Machine);
    Assert.AreNotEqual(certCypher.Length, text.Length);

    var clearText = certCypher.AsDecryptFromBytes(scope: EncryptionScope.Machine);
    Assert.AreEqual(text, clearText);
}
Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 is compatible.  net8.0-android was computed.  net8.0-android34.0 is compatible.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-ios18.0 is compatible.  net8.0-maccatalyst was computed.  net8.0-maccatalyst18.0 is compatible.  net8.0-macos was computed.  net8.0-macos15.0 is compatible.  net8.0-tvos was computed.  net8.0-windows was computed.  net8.0-windows7.0 is compatible.  net9.0 is compatible.  net9.0-android was computed.  net9.0-android35.0 is compatible.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-ios18.0 is compatible.  net9.0-maccatalyst was computed.  net9.0-maccatalyst18.0 is compatible.  net9.0-macos was computed.  net9.0-macos15.0 is compatible.  net9.0-tvos was computed.  net9.0-windows was computed.  net9.0-windows7.0 is compatible. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on Walter.Cypher:

Package Downloads
Walter.BOM

Internal NuGet package with business objects used by several ASP-WAF products Documentation available at https://firewallapi.asp-waf.com/?topic=html/N-Walter.BOM.htm

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
2025.4.17.1600 390 4/17/2025
2025.3.13.1306 334 3/13/2025
2025.2.26.1548 341 2/26/2025
2025.2.15.1301 1,186 2/15/2025
2025.1.16.1405 330 1/16/2025
2024.11.30.1709 1,338 12/13/2024
2024.11.30.617 114 12/13/2024
2024.11.28.1622 362 11/28/2024
2024.11.20.1316 477 11/21/2024
2024.11.14.1710 514 11/14/2024
2024.11.6.1222 421 11/6/2024
2024.10.28.1605 442 10/28/2024
2024.10.28.1335 409 10/28/2024
2024.10.19.1525 391 10/20/2024
2024.9.17.1417 1,331 9/17/2024
2024.9.12.1923 509 9/12/2024
2024.9.6.1352 516 9/7/2024
2024.9.4.1300 165 9/4/2024
2024.9.1.1143 518 9/1/2024
2024.8.19.1400 984 8/19/2024
2024.8.14.1256 933 8/14/2024
2024.8.12.958 530 8/12/2024
2024.8.5.1010 448 8/5/2024
2024.7.26.543 645 7/26/2024
2024.7.11.1604 490 7/11/2024
2024.7.9.1509 513 7/9/2024
2024.7.4.1424 498 7/4/2024
2024.7.3.1001 522 7/3/2024
2024.6.26.1408 911 6/28/2024
2024.6.6.1320 331 6/8/2024
2024.5.19.712 122 6/8/2024
2024.5.15.1634 327 5/15/2024
2024.5.14.829 232 5/14/2024
2024.5.13.1637 128 5/13/2024
2024.5.8.1005 270 5/8/2024
2024.4.4.2102 326 4/4/2024
2024.3.26.1111 231 3/26/2024
2024.3.19.2310 214 3/19/2024
2024.3.12.1022 232 3/12/2024
2024.3.7.836 255 3/7/2024
2024.3.6.1645 135 3/6/2024
2024.3.3.842 171 3/3/2024
2024.3.3.750 137 3/3/2024
2024.3.1.1143 149 3/1/2024
2024.2.27.1029 130 2/27/2024
2024.2.6.1959 158 2/6/2024
2023.10.12.1926 4,593 10/12/2023
2023.9.14.812 1,718 9/14/2023
2023.8.29.1040 9,368 8/29/2023
2023.8.17.903 1,845 8/17/2023
2023.8.9.1314 1,936 8/9/2023
2023.8.2.750 2,031 8/2/2023
2023.7.12.830 1,985 7/12/2023
2023.7.5.1419 2,105 7/6/2023
2023.6.14.1628 3,842 6/14/2023
2023.5.30.1640 2,523 5/30/2023
2023.5.4.1552 2,553 5/4/2023
2023.4.12.1236 6,921 4/12/2023
2023.3.14.1356 5,505 3/14/2023
2023.3.1.810 3,268 3/1/2023
2023.2.25.1185 949 2/25/2023
2023.2.22.27 5,657 2/22/2023
2023.2.15.1413 3,413 2/15/2023
2023.2.11.1628 3,409 2/11/2023
2023.1.11.534 3,705 1/11/2023
2022.12.14.648 12,831 12/14/2022
2022.11.27.1059 4,056 11/27/2022
2022.11.21.338 4,161 11/21/2022
2022.11.14.1819 4,338 11/14/2022
2022.11.14.1533 614 11/14/2022
2022.11.13.917 5,001 11/13/2022
2022.10.31.740 8,117 11/1/2022
2022.10.15.652 8,353 10/15/2022
2022.10.1.810 10,362 10/1/2022
2022.9.26.1444 10,968 9/26/2022
2022.9.14.809 9,619 9/14/2022
2022.9.8.1009 18,338 9/8/2022
2022.8.20.1007 9,797 8/20/2022
2022.8.1.1 10,061 7/31/2022
2022.7.15.841 18,944 7/15/2022
2022.7.1.1300 10,255 7/1/2022
2022.6.21.647 10,111 6/21/2022
2022.5.4.1010 36,606 5/4/2022
2022.4.10.828 29,469 4/10/2022
2022.3.26.1117 29,318 3/26/2022
2022.2.11.931 50,937 2/17/2022
2022.1.15.1312 21,060 1/17/2022
2022.1.10.537 20,146 1/10/2022
2022.1.7.1357 9,614 1/8/2022
2021.12.28.1452 11,051 12/28/2021
2021.12.15.911 10,405 12/16/2021 2021.12.15.911 is deprecated because it has critical bugs.
2021.11.19.850 38,079 11/19/2021
2021.11.11.1334 30,689 11/16/2021
2021.11.8.2109 9,060 11/9/2021
2021.11.8.1612 9,539 11/8/2021
2021.10.23.1310 52,258 10/25/2021
2021.10.13.1459 10,063 10/18/2021
2021.10.9.1116 104 10/9/2024
2021.10.9.821 494 10/10/2021
2021.9.26.1913 66,202 9/26/2021
2021.9.17.1702 15,414 9/18/2021
2021.8.30.1319 96,928 8/30/2021
2021.8.14.1600 53,643 8/16/2021
2021.8.14.829 5,715 8/14/2021
2021.8.8.1612 18,657 8/8/2021
2021.8.8.1138 466 8/8/2021
2021.7.22.1044 63,874 7/23/2021
2021.7.15.1547 10,068 7/15/2021
2021.7.12.734 9,863 7/13/2021
2021.6.26.1753 37,412 6/27/2021
2021.6.23.734 19,490 6/24/2021
2021.6.19.803 10,519 6/20/2021
2021.6.11.1600 37,585 6/13/2021
2021.6.9.1120 10,250 6/9/2021
2021.6.7.1407 2,598 6/7/2021
2021.5.28.1533 19,012 5/31/2021
2021.5.28.1451 10,220 5/31/2021
2021.5.25.1732 9,039 5/25/2021
2021.5.12.929 32,473 5/12/2021
2021.5.12.914 447 5/12/2021
2021.5.12.637 5,624 5/12/2021
2021.5.5.1901 33,373 5/6/2021
2021.5.2.1617 9,813 5/4/2021
2021.5.1.1505 10,136 5/1/2021
2021.4.28.1505 9,917 4/28/2021
2021.4.5.1653 64,046 4/5/2021
2021.4.1.913 10,002 4/1/2021
2021.3.31.1630 9,891 4/1/2021
2021.3.18.1608 10,339 3/18/2021
2021.3.3.1295 527 3/3/2021
2021.3.3.835 546 3/3/2021
2021.3.1.1205 24,863 3/2/2021
2021.3.1.1 17,214 2/27/2021
2021.2.21.1 16,693 2/21/2021
2021.2.19.3 9,011 2/20/2021
2021.2.19.2 8,759 2/19/2021
2021.2.18.2 7,795 2/19/2021
2021.2.18.1 493 2/19/2021
2021.2.16.1 17,071 2/16/2021
2021.2.10.1 38,610 2/10/2021
2021.2.9.1 7,662 2/9/2021
2021.2.8.1 518 2/9/2021
2021.2.7.1 14,506 2/6/2021
2020.12.27.1 13,919 12/27/2020
2020.12.26.3 20,281 12/27/2020
2020.12.26.2 552 12/27/2020
2020.12.24.2 571 12/26/2020
2020.12.24.1 521 12/24/2020
2020.12.18.1 7,819 12/19/2020
2020.12.15.1 14,031 12/15/2020
2020.12.14.5 13,173 12/14/2020
2020.12.14.4 7,189 12/14/2020
2020.12.14.3 6,963 12/14/2020
2020.11.27.1 68,650 11/27/2020
2020.11.25.1 13,321 11/25/2020
2020.11.23.1 546 11/25/2020
2020.11.22.2 8,879 11/23/2020
2020.11.20.1 8,129 11/21/2020
2020.11.19.3 8,194 11/19/2020
2020.11.11.1 65,406 11/11/2020
2020.10.9.5 142,344 10/9/2020
2020.10.5.1 72,014 10/5/2020
2020.10.4.1 588 10/4/2020
2020.10.1.1 19,173 10/1/2020
2020.9.24.2 24,271 9/24/2020
2020.9.12.1 50,957 9/12/2020
2020.9.8 17,759 9/8/2020
2020.9.6.5 5,418 9/6/2020
2020.9.6.4 577 9/6/2020
2020.9.6.2 1,821 9/6/2020
2020.9.3.1 14,632 9/3/2020

12 Mar 2025
-Update NuGet dependencies that have vulnerabilities

26 Feb 2025
- Update package references

14 November 2024
- Update to .net 9

2 April 2024
- Update to 8.0.3

7 March 2024
- Update to allow trimming and A0T compilation under .net 8

16 November 2023
- Update to add support for .net 8

14 September 2023
- SDK Service pack .net 6 and 7

9 August 2023
- Update to sevice packs of .net 6 and 7

2 Augusted  2023
- Update binaries