Function MD5(ByVal strSource As String,ByVal Code As Int16) As String Dim dataToHash As Byte() = (New System.Text.ASCIIEncoding).GetBytes(strSource) Dim hashvalue As Byte() = CType(System.Security.Cryptography.CryptoConfig.CreateFromName("MD5"),System.Security.Cryptography.HashAlgorithm).ComputeHash(dataToHash) Dim ATR As String = "" Dim i As Integer Select Case Code Case 16 '选择16位字符的加密结果 For i = 4 To 11 ATR &= Hex(hashvalue(i)).PadLeft(2,"0").ToLower Next Case 32 '选择32位字符的加密结果 For i = 0 To 15 ATR &= Hex(hashvalue(i)).PadLeft(2,"0").ToLower Next Case Else 'Code错误时,返回全部字符串,即32位字符 For i = 0 To 15 ATR &= Hex(hashvalue(i)).PadLeft(2,"0").ToLower Next End Select Return ATR End Function
原文载于:http://blog.sina.com.cn/s/blog_3cb3c25401009k0e.html 江缘的BLOG
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