diff options
Diffstat (limited to 'wrappers/dotnet/VNLib.Utils.Cryptography.Noscrypt/src/internal')
| -rw-r--r-- | wrappers/dotnet/VNLib.Utils.Cryptography.Noscrypt/src/internal/FunctionTable.cs | 155 | ||||
| -rw-r--r-- | wrappers/dotnet/VNLib.Utils.Cryptography.Noscrypt/src/internal/NCUtil.cs | 104 |
2 files changed, 259 insertions, 0 deletions
diff --git a/wrappers/dotnet/VNLib.Utils.Cryptography.Noscrypt/src/internal/FunctionTable.cs b/wrappers/dotnet/VNLib.Utils.Cryptography.Noscrypt/src/internal/FunctionTable.cs new file mode 100644 index 0000000..269ae4d --- /dev/null +++ b/wrappers/dotnet/VNLib.Utils.Cryptography.Noscrypt/src/internal/FunctionTable.cs @@ -0,0 +1,155 @@ +// Copyright (C) 2024 Vaughn Nugent +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as +// published by the Free Software Foundation, either version 3 of the +// License, or (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + +using System; + +using VNLib.Utils.Native; +using VNLib.Utils.Extensions; + +using NCResult = System.Int64; + +namespace VNLib.Utils.Cryptography.Noscrypt.@internal +{ + + internal unsafe readonly struct FunctionTable + { + + public readonly NCGetContextStructSizeDelegate NCGetContextStructSize; + public readonly NCInitContextDelegate NCInitContext; + public readonly NCReInitContextDelegate NCReInitContext; + public readonly NCDestroyContextDelegate NCDestroyContext; + public readonly NCGetPublicKeyDelegate NCGetPublicKey; + public readonly NCValidateSecretKeyDelegate NCValidateSecretKey; + public readonly NCSignDataDelegate NCSignData; + public readonly NCVerifyDataDelegate NCVerifyData; + public readonly NCUtilCipherAllocDelegate NCUtilCipherAlloc; + public readonly NCUtilCipherFreeDelegate NCUtilCipherFree; + public readonly NCUtilCipherInitDelegate NCUtilCipherInit; + public readonly NCUtilCipherGetFlagsDelegate NCUtilCipherGetFlags; + public readonly NCUtilCipherGetOutputSizeDelegate NCUtilCipherGetOutputSize; + public readonly NCUtilCipherReadOutputDelegate NCUtilCipherReadOutput; + public readonly NCUtilCipherSetPropertyDelegate NCUtilCipherSetProperty; + public readonly NCUtilCipherUpdateDelegate NCUtilCipherUpdate; + public readonly NCUtilCipherGetIvSizeDelegate NCUtilCipherGetIvSize; + + +#if DEBUG + public readonly NCGetConversationKeyDelegate NCGetConversationKey; +#endif + + private FunctionTable(SafeLibraryHandle library) + { + //Load the required high-level api functions + NCGetContextStructSize = library.DangerousGetFunction<NCGetContextStructSizeDelegate>(); + NCInitContext = library.DangerousGetFunction<NCInitContextDelegate>(); + NCReInitContext = library.DangerousGetFunction<NCReInitContextDelegate>(); + NCDestroyContext = library.DangerousGetFunction<NCDestroyContextDelegate>(); + NCGetPublicKey = library.DangerousGetFunction<NCGetPublicKeyDelegate>(); + NCValidateSecretKey = library.DangerousGetFunction<NCValidateSecretKeyDelegate>(); + NCSignData = library.DangerousGetFunction<NCSignDataDelegate>(); + NCVerifyData = library.DangerousGetFunction<NCVerifyDataDelegate>(); + NCSignData = library.DangerousGetFunction<NCSignDataDelegate>(); + NCVerifyData = library.DangerousGetFunction<NCVerifyDataDelegate>(); + + //Cipher util library functions + NCUtilCipherAlloc = library.DangerousGetFunction<NCUtilCipherAllocDelegate>(); + NCUtilCipherFree = library.DangerousGetFunction<NCUtilCipherFreeDelegate>(); + NCUtilCipherInit = library.DangerousGetFunction<NCUtilCipherInitDelegate>(); + NCUtilCipherGetFlags = library.DangerousGetFunction<NCUtilCipherGetFlagsDelegate>(); + NCUtilCipherGetOutputSize = library.DangerousGetFunction<NCUtilCipherGetOutputSizeDelegate>(); + NCUtilCipherReadOutput = library.DangerousGetFunction<NCUtilCipherReadOutputDelegate>(); + NCUtilCipherSetProperty = library.DangerousGetFunction<NCUtilCipherSetPropertyDelegate>(); + NCUtilCipherUpdate = library.DangerousGetFunction<NCUtilCipherUpdateDelegate>(); + NCUtilCipherGetIvSize = library.DangerousGetFunction<NCUtilCipherGetIvSizeDelegate>(); + +#if DEBUG + NCGetConversationKey = library.DangerousGetFunction<NCGetConversationKeyDelegate>(); +#endif + } + + /// <summary> + /// Initialize a new function table from the specified library + /// </summary> + /// <param name="library"></param> + /// <returns>The function table structure</returns> + /// <exception cref="MissingMemberException"></exception> + /// <exception cref="EntryPointNotFoundException"></exception> + public static FunctionTable BuildFunctionTable(SafeLibraryHandle library) => new (library); + + /* + * ################################################ + * + * Functions match the noscrypt.h header file + * + * ################################################ + */ + + //FUCNTIONS + [SafeMethodName("NCGetContextStructSize")] + internal delegate uint NCGetContextStructSizeDelegate(); + + [SafeMethodName("NCInitContext")] + internal delegate NCResult NCInitContextDelegate(IntPtr ctx, byte* entropy32); + + [SafeMethodName("NCReInitContext")] + internal delegate NCResult NCReInitContextDelegate(IntPtr ctx, byte* entropy32); + + [SafeMethodName("NCDestroyContext")] + internal delegate NCResult NCDestroyContextDelegate(IntPtr ctx); + + [SafeMethodName("NCGetPublicKey")] + internal delegate NCResult NCGetPublicKeyDelegate(IntPtr ctx, NCSecretKey* secKey, NCPublicKey* publicKey); + + [SafeMethodName("NCValidateSecretKey")] + internal delegate NCResult NCValidateSecretKeyDelegate(IntPtr ctx, NCSecretKey* secKey); + + [SafeMethodName("NCSignData")] + internal delegate NCResult NCSignDataDelegate(IntPtr ctx, NCSecretKey* sk, byte* random32, byte* data, uint dataSize, byte* sig64); + + [SafeMethodName("NCVerifyData")] + internal delegate NCResult NCVerifyDataDelegate(IntPtr ctx, NCPublicKey* pk, byte* data, uint dataSize, byte* sig64); + + [SafeMethodName("NCGetConversationKey")] + internal delegate NCResult NCGetConversationKeyDelegate(IntPtr ctx, NCSecretKey* sk, NCPublicKey* pk, byte* keyOut32); + + + [SafeMethodName("NCUtilCipherAlloc")] + internal delegate IntPtr NCUtilCipherAllocDelegate(uint version, uint flags); + + [SafeMethodName("NCUtilCipherFree")] + internal delegate void NCUtilCipherFreeDelegate(IntPtr cipher); + + [SafeMethodName("NCUtilCipherInit")] + internal delegate NCResult NCUtilCipherInitDelegate(IntPtr cipher, byte* inputData, uint inputLen); + + [SafeMethodName("NCUtilCipherGetFlags")] + internal delegate NCResult NCUtilCipherGetFlagsDelegate(IntPtr cipher); + + [SafeMethodName("NCUtilCipherGetOutputSize")] + internal delegate NCResult NCUtilCipherGetOutputSizeDelegate(IntPtr cipher); + + [SafeMethodName("NCUtilCipherReadOutput")] + internal delegate NCResult NCUtilCipherReadOutputDelegate(IntPtr cipher, byte* outputData, uint outputLen); + + [SafeMethodName("NCUtilCipherSetProperty")] + internal delegate NCResult NCUtilCipherSetPropertyDelegate(IntPtr cipher, uint property, byte* value, uint valueLen); + + [SafeMethodName("NCUtilCipherUpdate")] + internal delegate NCResult NCUtilCipherUpdateDelegate(IntPtr cipher, IntPtr libContext, NCSecretKey* secKey, NCPublicKey* pubKey); + + [SafeMethodName("NCUtilCipherGetIvSize")] + internal delegate NCResult NCUtilCipherGetIvSizeDelegate(IntPtr cipher); + } +} diff --git a/wrappers/dotnet/VNLib.Utils.Cryptography.Noscrypt/src/internal/NCUtil.cs b/wrappers/dotnet/VNLib.Utils.Cryptography.Noscrypt/src/internal/NCUtil.cs new file mode 100644 index 0000000..16f46c6 --- /dev/null +++ b/wrappers/dotnet/VNLib.Utils.Cryptography.Noscrypt/src/internal/NCUtil.cs @@ -0,0 +1,104 @@ +// Copyright (C) 2024 Vaughn Nugent +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as +// published by the Free Software Foundation, either version 3 of the +// License, or (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + +using System; +using System.Reflection; +using static VNLib.Utils.Cryptography.Noscrypt.NoscryptLibrary; + +using NCResult = System.Int64; + +namespace VNLib.Utils.Cryptography.Noscrypt.@internal +{ + + public static class NCUtil + { + + + internal static void CheckResult<T>(NCResult result, bool raiseOnFailure) where T : Delegate + { + //Only negative values are errors + if (result >= NC_SUCCESS) + { + return; + } + + NCResult asPositive = -result; + + // Error code are only 8 bits, if an argument error occured, the + // argument number will be in the next upper 8 bits + NCErrorCodes errorCode = (NCErrorCodes)(asPositive & 0xFF); + byte argNumber = (byte)(asPositive >> 8 & 0xFF); + + switch (errorCode) + { + case NCErrorCodes.E_NULL_PTR: + RaiseNullArgExceptionForArgumentNumber<T>(argNumber); + break; + case NCErrorCodes.E_INVALID_ARG: + RaiseArgExceptionForArgumentNumber<T>(argNumber); + break; + case NCErrorCodes.E_ARGUMENT_OUT_OF_RANGE: + RaiseOORExceptionForArgumentNumber<T>(argNumber); + break; + case NCErrorCodes.E_INVALID_CTX: + throw new InvalidOperationException("The library context object is null or invalid"); + case NCErrorCodes.E_OPERATION_FAILED: + RaiseOperationFailedException(raiseOnFailure); + break; + case NCErrorCodes.E_VERSION_NOT_SUPPORTED: + throw new NotSupportedException("The requested version is not supported"); + + default: + if (raiseOnFailure) + { + throw new InvalidOperationException($"The operation failed with error, code: {errorCode} for arugment {argNumber:x}"); + } + break; + } + } + + private static void RaiseOperationFailedException(bool raise) + { + if (raise) + { + throw new InvalidOperationException("The operation failed for an unknown reason"); + } + } + + private static void RaiseNullArgExceptionForArgumentNumber<T>(int argNumber) where T : Delegate + { + //Get delegate parameters + Type type = typeof(T); + ParameterInfo arg = type.GetMethod("Invoke")!.GetParameters()[argNumber]; + throw new ArgumentNullException(arg.Name, "Argument is null or invalid cannot continue"); + } + + private static void RaiseArgExceptionForArgumentNumber<T>(int argNumber) where T : Delegate + { + //Get delegate parameters + Type type = typeof(T); + ParameterInfo arg = type.GetMethod("Invoke")!.GetParameters()[argNumber]; + throw new ArgumentException("Argument is null or invalid cannot continue", arg.Name); + } + + private static void RaiseOORExceptionForArgumentNumber<T>(int argNumber) where T : Delegate + { + //Get delegate parameters + Type type = typeof(T); + ParameterInfo arg = type.GetMethod("Invoke")!.GetParameters()[argNumber]; + throw new ArgumentOutOfRangeException(arg.Name, "Argument is out of range of acceptable values"); + } + } +} |