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annotate Chronosv2/source/Extensions/ArrayExtensions.cs @ 19:09d18d6e5f40

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airport work
author stevenh7776 stevenhollidge@hotmail.com
date Thu, 15 Mar 2012 06:59:15 +0000
parents 443821e55f06
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rev   line source
19
09d18d6e5f40 airport work
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1 using System;
10
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2 using System.Security.Cryptography;
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3 using System.Text;
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4
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5 namespace Chronos.Extensions
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6 {
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7 /// <summary>
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8 /// Extension methods
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9 /// </summary>
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10 public static class ArrayExtensions
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11 {
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12 #region · Extensions ·
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13
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14 /// <summary>
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15 /// Converts a given byte array to a base-64 string
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16 /// </summary>
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17 /// <param name="buffer"></param>
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18 /// <returns></returns>
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19 public static string ToBase64String(this byte[] buffer)
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20 {
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21 return Convert.ToBase64String(buffer);
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22 }
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23
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24 /// <summary>
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25 /// Computes the MD5 hash of a given byte array
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26 /// </summary>
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27 /// <param name="buffer"></param>
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28 /// <returns></returns>
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29 public static byte[] ComputeMD5Hash(this byte[] buffer)
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30 {
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31 MD5 md5 = MD5.Create();
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32 md5.TransformFinalBlock(buffer, 0, buffer.Length);
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33
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34 return md5.Hash;
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35 }
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36
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37 /// <summary>
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38 /// Computes the SHA1 hash of a given byte array
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39 /// </summary>
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40 /// <param name="buffer"></param>
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41 /// <returns></returns>
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42 public static byte[] ComputeSHA1Hash(this byte[] buffer)
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43 {
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44 SHA1 hashAlgorithm = SHA1.Create();
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45 hashAlgorithm.TransformFinalBlock(buffer, 0, buffer.Length);
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46
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47 return hashAlgorithm.Hash;
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48 }
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49
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50 /// <summary>
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51 /// Computes the MD5 hash of a given array of strings
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52 /// </summary>
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53 /// <param name="buffer"></param>
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54 /// <returns></returns>
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55 public static byte[] ComputeMD5Hash(this string[] values)
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56 {
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57 MD5 hashAlgorithm = MD5.Create();
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58
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59 foreach (string value in values)
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60 {
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61 if (value != null)
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62 {
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63 byte[] buffer = Encoding.UTF8.GetBytes(value);
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64 byte[] output = new byte[buffer.Length];
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65 int count = hashAlgorithm.TransformBlock(buffer, 0, buffer.Length, output, 0);
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66 }
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67 }
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68
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69 hashAlgorithm.TransformFinalBlock(new byte[0], 0, 0);
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70
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71 return hashAlgorithm.Hash;
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72 }
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73
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74 /// <summary>
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75 /// Computes the SHA1 hash of a given array of strings
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76 /// </summary>
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77 /// <param name="buffer"></param>
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78 /// <returns></returns>
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79 private static byte[] ComputeSHA1Hash(this string[] values)
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80 {
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81 SHA1 hashAlgorithm = SHA1.Create();
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82
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83 foreach (string value in values)
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84 {
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85 if (value != null)
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86 {
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87 byte[] buffer = Encoding.UTF8.GetBytes(value);
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88 byte[] output = new byte[buffer.Length];
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89 int count = hashAlgorithm.TransformBlock(buffer, 0, buffer.Length, output, 0);
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90 }
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91 }
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92
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93 hashAlgorithm.TransformFinalBlock(new byte[0], 0, 0);
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94
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95 return hashAlgorithm.Hash;
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96 }
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97
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98 /// <summary>
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99 /// Convert a byte array to an hex string
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100 /// </summary>
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101 /// <param name="buffer"></param>
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102 /// <returns></returns>
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103 public static string ToHexString(this byte[] buffer)
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104 {
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105 StringBuilder hex = new StringBuilder();
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106
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107 for (int i = 0; i < buffer.Length; i++)
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108 {
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109 hex.Append(buffer[i].ToString("x2"));
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110 }
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111
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112 return hex.ToString();
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113 }
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114
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115 #endregion
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116 }
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117 }