Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Security / Cryptography / Crypto.cs / 1 / Crypto.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // // Crypto.cs // namespace System.Security.Cryptography { using Microsoft.Win32; using System.Runtime.Serialization; using System.Globalization; // This enum represents cipher chaining modes: cipher block chaining (CBC), // electronic code book (ECB), output feedback (OFB), cipher feedback (CFB), // and ciphertext-stealing (CTS). Not all implementations will support all modes. [Serializable] [System.Runtime.InteropServices.ComVisible(true)] public enum CipherMode { // Please keep in sync with wincrypt.h CBC = 1, ECB = 2, OFB = 3, CFB = 4, CTS = 5 } // This enum represents the padding method to use for filling out short blocks. // "None" means no padding (whole blocks required). // "PKCS7" is the padding mode defined in RFC 2898, Section 6.1.1, Step 4, generalized // to whatever block size is required. // "Zeros" means pad with zero bytes to fill out the last block. // "ISO 10126" is the same as PKCS5 except that it fills the bytes before the last one with // random bytes. "ANSI X.923" fills the bytes with zeros and puts the number of padding // bytes in the last byte. [Serializable] [System.Runtime.InteropServices.ComVisible(true)] public enum PaddingMode { None = 1, PKCS7 = 2, Zeros = 3, ANSIX923 = 4, ISO10126 = 5 } // This structure is used for returning the set of legal key sizes and // block sizes of the symmetric algorithms. // Note: this class should be sealed, otherwise someone could sub-class it and the read-only // properties we depend on can have setters. Ideally, we should have a struct here (value type) // but we use what we have now and try to close the hole allowing someone to specify an invalid key size [System.Runtime.InteropServices.ComVisible(true)] public sealed class KeySizes { private int m_minSize; private int m_maxSize; private int m_skipSize; public int MinSize { get { return m_minSize; } } public int MaxSize { get { return m_maxSize; } } public int SkipSize { get { return m_skipSize; } } public KeySizes(int minSize, int maxSize, int skipSize) { m_minSize = minSize; m_maxSize = maxSize; m_skipSize = skipSize; } } [Serializable] [System.Runtime.InteropServices.ComVisible(true)] public class CryptographicException : SystemException { private const int FORMAT_MESSAGE_IGNORE_INSERTS = 0x00000200; private const int FORMAT_MESSAGE_FROM_SYSTEM = 0x00001000; private const int FORMAT_MESSAGE_ARGUMENT_ARRAY = 0x00002000; public CryptographicException() : base(Environment.GetResourceString("Arg_CryptographyException")) { SetErrorCode(__HResults.CORSEC_E_CRYPTO); } public CryptographicException(String message) : base(message) { SetErrorCode(__HResults.CORSEC_E_CRYPTO); } public CryptographicException(String format, String insert) : base(String.Format(CultureInfo.CurrentCulture, format, insert)) { SetErrorCode(__HResults.CORSEC_E_CRYPTO); } public CryptographicException(String message, Exception inner) : base(message, inner) { SetErrorCode(__HResults.CORSEC_E_CRYPTO); } public CryptographicException(int hr) : this(Win32Native.GetMessage(hr)) { if ((hr & 0x80000000) != 0x80000000) hr = (hr & 0x0000FFFF) | unchecked((int)0x80070000); SetErrorCode(hr); } protected CryptographicException(SerializationInfo info, StreamingContext context) : base (info, context) {} // This method is only called from inside the VM. private static void ThrowCryptogaphicException (int hr) { throw new CryptographicException(hr); } } [Serializable()] [System.Runtime.InteropServices.ComVisible(true)] public class CryptographicUnexpectedOperationException : CryptographicException { public CryptographicUnexpectedOperationException() : base() { SetErrorCode(__HResults.CORSEC_E_CRYPTO_UNEX_OPER); } public CryptographicUnexpectedOperationException(String message) : base(message) { SetErrorCode(__HResults.CORSEC_E_CRYPTO_UNEX_OPER); } public CryptographicUnexpectedOperationException(String format, String insert) : base(String.Format(CultureInfo.CurrentCulture, format, insert)) { SetErrorCode(__HResults.CORSEC_E_CRYPTO_UNEX_OPER); } public CryptographicUnexpectedOperationException(String message, Exception inner) : base(message, inner) { SetErrorCode(__HResults.CORSEC_E_CRYPTO_UNEX_OPER); } protected CryptographicUnexpectedOperationException(SerializationInfo info, StreamingContext context) : base (info, context) {} } }
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