Add support for ГОСТ Р 34.10 digital signatures
- Implemented the GostKeyValue class for handling public key parameters in ГОСТ Р 34.10 digital signatures. - Created the GostSignedXml class to manage XML signatures using ГОСТ 34.10, including methods for computing and checking signatures. - Developed the GostSignedXmlImpl class to encapsulate the signature computation logic and public key retrieval. - Added specific key value classes for ГОСТ Р 34.10-2001, ГОСТ Р 34.10-2012/256, and ГОСТ Р 34.10-2012/512 to support different signature algorithms. - Ensured compatibility with existing XML signature standards while integrating ГОСТ cryptography.
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# GostCryptography
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.NET driver for [ViPNet CSP](http://www.infotecs.ru/) and [CryptoPro CSP](http://www.cryptopro.ru/).
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Implements crypto algorithms based on Russian national cryptographic standards `GOST 28147-89`, `GOST R 34.12`,
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`GOST R 34.10` and `GOST R 34.11`. Also provides abstractions to sign and verify `CMS/PKCS #7` messages, sign,
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verify and encrypt XML documents.
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- [NuGet Package](https://www.nuget.org/packages/GostCryptography)
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- [Examples](Source/GostCryptography.Tests)
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- [License](LICENSE)
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## Implemented Algorithms
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- [Symmetric algorithm based on GOST 28147-89](Source/GostCryptography/Gost_28147_89/Gost_28147_89_SymmetricAlgorithm.cs)
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- [Hash-based Message Authentication Code (HMAC) based on GOST 28147-89](Source/GostCryptography/Gost_28147_89/Gost_28147_89_ImitHashAlgorithm.cs)
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- [Symmetric algorithm based on GOST R 34.12 Magma](Source/GostCryptography/Gost_28147_89/Gost_3412_M_SymmetricAlgorithm.cs)
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- [Hash-based Message Authentication Code (HMAC) based on GOST R 34.12 Magma](Source/GostCryptography/Gost_28147_89/Gost_3412_M_ImitHashAlgorithm.cs)
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- [Symmetric algorithm based on GOST R 34.12 Kuznyechik](Source/GostCryptography/Gost_28147_89/Gost_3412_K_SymmetricAlgorithm.cs)
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- [Hash-based Message Authentication Code (HMAC) based on GOST R 34.12 Kuznyechik](Source/GostCryptography/Gost_28147_89/Gost_3412_K_ImitHashAlgorithm.cs)
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- [Hash algorithm based on GOST R 34.11-94](Source/GostCryptography/Gost_R3411/Gost_R3411_94_HashAlgorithm.cs), [2012/256](Source/GostCryptography/Gost_R3411/Gost_R3411_2012_256_HashAlgorithm.cs), [2012/512](Source/GostCryptography/Gost_R3411/Gost_R3411_2012_512_HashAlgorithm.cs)
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- [Hash-based Message Authentication Code (HMAC) based on GOST R 34.11-94](Source/GostCryptography/Gost_R3411/Gost_R3411_94_HMAC.cs), [2012/256](Source/GostCryptography/Gost_R3411/Gost_R3411_2012_256_HMAC.cs), [2012/512](Source/GostCryptography/Gost_R3411/Gost_R3411_2012_512_HMAC.cs)
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- [Pseudorandom Function (PRF) based on GOST R 34.11-94](Source/GostCryptography/Gost_R3411/Gost_R3411_94_PRF.cs), [2012/256](Source/GostCryptography/Gost_R3411/Gost_R3411_2012_256_PRF.cs), [2012/512](Source/GostCryptography/Gost_R3411/Gost_R3411_2012_512_PRF.cs)
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- [Asymmetric algorithm based on GOST R 34.10-2001](Source/GostCryptography/Gost_R3410/Gost_R3410_2001_AsymmetricAlgorithm.cs), [2012/256](Source/GostCryptography/Gost_R3410/Gost_R3410_2012_256_AsymmetricAlgorithm.cs), [2012/512](Source/GostCryptography/Gost_R3410/Gost_R3410_2012_512_AsymmetricAlgorithm.cs)
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- [Asymmetric algorithm with an ephemeral key based on GOST R 34.10-2001](Source/GostCryptography/Gost_R3410/Gost_R3410_2001_EphemeralAsymmetricAlgorithm.cs), [2012/256](Source/GostCryptography/Gost_R3410/Gost_R3410_2012_256_EphemeralAsymmetricAlgorithm.cs), [2012/512](Source/GostCryptography/Gost_R3410/Gost_R3410_2012_512_EphemeralAsymmetricAlgorithm.cs)
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- [Asymmetric key exchange formatter based on GOST R 34.10-2001](Source/GostCryptography/Gost_R3410/Gost_R3410_2001_KeyExchangeFormatter.cs), [2012/256](Source/GostCryptography/Gost_R3410/Gost_R3410_2012_256_KeyExchangeFormatter.cs), [2012/512](Source/GostCryptography/Gost_R3410/Gost_R3410_2012_512_KeyExchangeFormatter.cs)
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- [Asymmetric key exchange deformatter based on GOST R 34.10-2001](Source/GostCryptography/Gost_R3410/Gost_R3410_2001_KeyExchangeDeformatter.cs), [2012/256](Source/GostCryptography/Gost_R3410/Gost_R3410_2012_256_KeyExchangeDeformatter.cs), [2012/512](Source/GostCryptography/Gost_R3410/Gost_R3410_2012_512_KeyExchangeDeformatter.cs)
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- [Asymmetric signature formatter based on GOST R 34.10-2001, 2012/256, 2012/512](Source/GostCryptography/Base/GostSignatureFormatter.cs)
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- [Asymmetric signature deformatter based on GOST R 34.10-2001, 2012/256, 2012/512](Source/GostCryptography/Base/GostSignatureDeformatter.cs)
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- [XML encryption based on GOST R 34.10-2001, 2012/256, 2012/512](Source/GostCryptography/Xml/GostEncryptedXml.cs)
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- [XML signing based on XML-DSig and GOST R 34.10-2001, 2012/256, 2012/512](Source/GostCryptography/Xml/GostSignedXml.cs)
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- [Signing and verifying of CMS/PKCS #7 messages based on GOST R 34.10-2001, 2012/256, 2012/512](Source/GostCryptography/Pkcs/GostSignedCms.cs)
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## Tested On
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- Windows 10 x64, CryptoPro CSP 5.0.13000 KC1
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- Windows 10 x64, ViPNet CSP 4.2.8.51670
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## Build instructions
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To build package run in repository root:
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```
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dotnet build --configuration Release
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```
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