Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / clr / src / BCL / System / Security / Util / Hex.cs / 1 / Hex.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /* * Hex.cs * * Operations to convert to and from Hex * */ namespace System.Security.Util { using System; using System.Security; internal static class Hex { // converts number to hex digit. Does not do any range checks. static char HexDigit(int num) { return (char)((num < 10) ? (num + '0') : (num + ('A' - 10))); } public static String EncodeHexString(byte[] sArray) { String result = null; if(sArray != null) { char[] hexOrder = new char[sArray.Length * 2]; int digit; for(int i = 0, j = 0; i < sArray.Length; i++) { digit = (int)((sArray[i] & 0xf0) >> 4); hexOrder[j++] = HexDigit(digit); digit = (int)(sArray[i] & 0x0f); hexOrder[j++] = HexDigit(digit); } result = new String(hexOrder); } return result; } internal static string EncodeHexStringFromInt(byte[] sArray) { String result = null; if(sArray != null) { char[] hexOrder = new char[sArray.Length * 2]; int i = sArray.Length; int digit, j=0; while (i-- > 0) { digit = (sArray[i] & 0xf0) >> 4; hexOrder[j++] = HexDigit(digit); digit = sArray[i] & 0x0f; hexOrder[j++] = HexDigit(digit); } result = new String(hexOrder); } return result; } public static int ConvertHexDigit(Char val) { if (val <= '9' && val >= '0') return (val - '0'); else if (val >= 'a' && val <= 'f') return ((val - 'a') + 10); else if (val >= 'A' && val <= 'F') return ((val - 'A') + 10); else throw new ArgumentException( Environment.GetResourceString( "ArgumentOutOfRange_Index" ) ); } public static byte[] DecodeHexString(String hexString) { if (hexString == null) throw new ArgumentNullException( "hexString" ); bool spaceSkippingMode = false; int i = 0; int length = hexString.Length; if ((length >= 2) && (hexString[0] == '0') && ( (hexString[1] == 'x') || (hexString[1] == 'X') )) { length = hexString.Length - 2; i = 2; } // Hex strings must always have 2N or (3N - 1) entries. if (length % 2 != 0 && length % 3 != 2) { throw new ArgumentException( Environment.GetResourceString( "Argument_InvalidHexFormat" ) ); } byte[] sArray; if (length >=3 && hexString[i + 2] == ' ') { spaceSkippingMode = true; // Each hex digit will take three spaces, except the first (hence the plus 1). sArray = new byte[length / 3 + 1]; } else { // Each hex digit will take two spaces sArray = new byte[length / 2]; } int digit; int rawdigit; for (int j = 0; i < hexString.Length; i += 2, j++) { rawdigit = ConvertHexDigit(hexString[i]); digit = ConvertHexDigit(hexString[i+1]); sArray[j] = (byte) (digit | (rawdigit << 4)); if (spaceSkippingMode) i++; } return(sArray); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /* * Hex.cs * * Operations to convert to and from Hex * */ namespace System.Security.Util { using System; using System.Security; internal static class Hex { // converts number to hex digit. Does not do any range checks. static char HexDigit(int num) { return (char)((num < 10) ? (num + '0') : (num + ('A' - 10))); } public static String EncodeHexString(byte[] sArray) { String result = null; if(sArray != null) { char[] hexOrder = new char[sArray.Length * 2]; int digit; for(int i = 0, j = 0; i < sArray.Length; i++) { digit = (int)((sArray[i] & 0xf0) >> 4); hexOrder[j++] = HexDigit(digit); digit = (int)(sArray[i] & 0x0f); hexOrder[j++] = HexDigit(digit); } result = new String(hexOrder); } return result; } internal static string EncodeHexStringFromInt(byte[] sArray) { String result = null; if(sArray != null) { char[] hexOrder = new char[sArray.Length * 2]; int i = sArray.Length; int digit, j=0; while (i-- > 0) { digit = (sArray[i] & 0xf0) >> 4; hexOrder[j++] = HexDigit(digit); digit = sArray[i] & 0x0f; hexOrder[j++] = HexDigit(digit); } result = new String(hexOrder); } return result; } public static int ConvertHexDigit(Char val) { if (val <= '9' && val >= '0') return (val - '0'); else if (val >= 'a' && val <= 'f') return ((val - 'a') + 10); else if (val >= 'A' && val <= 'F') return ((val - 'A') + 10); else throw new ArgumentException( Environment.GetResourceString( "ArgumentOutOfRange_Index" ) ); } public static byte[] DecodeHexString(String hexString) { if (hexString == null) throw new ArgumentNullException( "hexString" ); bool spaceSkippingMode = false; int i = 0; int length = hexString.Length; if ((length >= 2) && (hexString[0] == '0') && ( (hexString[1] == 'x') || (hexString[1] == 'X') )) { length = hexString.Length - 2; i = 2; } // Hex strings must always have 2N or (3N - 1) entries. if (length % 2 != 0 && length % 3 != 2) { throw new ArgumentException( Environment.GetResourceString( "Argument_InvalidHexFormat" ) ); } byte[] sArray; if (length >=3 && hexString[i + 2] == ' ') { spaceSkippingMode = true; // Each hex digit will take three spaces, except the first (hence the plus 1). sArray = new byte[length / 3 + 1]; } else { // Each hex digit will take two spaces sArray = new byte[length / 2]; } int digit; int rawdigit; for (int j = 0; i < hexString.Length; i += 2, j++) { rawdigit = ConvertHexDigit(hexString[i]); digit = ConvertHexDigit(hexString[i+1]); sArray[j] = (byte) (digit | (rawdigit << 4)); if (spaceSkippingMode) i++; } return(sArray); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- userdatakeys.cs
- DiagnosticTraceSource.cs
- BasePropertyDescriptor.cs
- ParseNumbers.cs
- XmlAtomicValue.cs
- XhtmlTextWriter.cs
- TypeNameParser.cs
- FilterQueryOptionExpression.cs
- SoapEnumAttribute.cs
- InstalledFontCollection.cs
- cache.cs
- SimpleTextLine.cs
- WeakRefEnumerator.cs
- PreloadHost.cs
- sqlnorm.cs
- CodeTypeOfExpression.cs
- DbModificationClause.cs
- LockedAssemblyCache.cs
- CheckableControlBaseAdapter.cs
- DataObjectEventArgs.cs
- SharedDp.cs
- BlurEffect.cs
- XmlSchemaAppInfo.cs
- IPAddressCollection.cs
- TraceEventCache.cs
- TrustLevel.cs
- DetailsViewInsertedEventArgs.cs
- LayoutEditorPart.cs
- AdornerDecorator.cs
- ObjectQueryExecutionPlan.cs
- CompilationPass2TaskInternal.cs
- Vertex.cs
- CodeCastExpression.cs
- TextParentUndoUnit.cs
- StoryFragments.cs
- SQlBooleanStorage.cs
- GroupBoxRenderer.cs
- AsnEncodedData.cs
- EventPropertyMap.cs
- ConfigXmlComment.cs
- SendMessageChannelCache.cs
- BindToObject.cs
- CodeStatementCollection.cs
- ControlValuePropertyAttribute.cs
- ReadOnlyAttribute.cs
- ByValueEqualityComparer.cs
- _CacheStreams.cs
- SourceItem.cs
- SafeWaitHandle.cs
- StaticFileHandler.cs
- FontWeights.cs
- Win32.cs
- RSACryptoServiceProvider.cs
- TextTreeInsertElementUndoUnit.cs
- _AutoWebProxyScriptHelper.cs
- CustomErrorsSectionWrapper.cs
- PortCache.cs
- XmlSerializerAssemblyAttribute.cs
- ChtmlSelectionListAdapter.cs
- CreateUserWizard.cs
- BeginCreateSecurityTokenRequest.cs
- GlyphsSerializer.cs
- StorageModelBuildProvider.cs
- DataGridViewColumnDesignTimeVisibleAttribute.cs
- Utility.cs
- TableStyle.cs
- FileFormatException.cs
- XmlCustomFormatter.cs
- PersonalizablePropertyEntry.cs
- PaperSource.cs
- mactripleDES.cs
- EntityContainerEmitter.cs
- XmlDataSource.cs
- InlineCategoriesDocument.cs
- ResourcePermissionBaseEntry.cs
- XmlElementList.cs
- CssStyleCollection.cs
- AttributeUsageAttribute.cs
- GlyphingCache.cs
- XmlnsDictionary.cs
- SoapSchemaExporter.cs
- BinaryNode.cs
- TextEditorCharacters.cs
- Enum.cs
- SqlMultiplexer.cs
- HiddenField.cs
- EdmComplexPropertyAttribute.cs
- EntityAdapter.cs
- XmlDocumentType.cs
- KeyPressEvent.cs
- SqlUnionizer.cs
- ReachDocumentReferenceCollectionSerializerAsync.cs
- DataGridViewControlCollection.cs
- User.cs
- SmtpSection.cs
- ControlPaint.cs
- AdapterUtil.cs
- XmlSchemaNotation.cs
- XDRSchema.cs
- PowerStatus.cs