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Calculate MD5 Hash of File (or SHA-1, and other hash algorithms)Demonstrates how to calculate a hash for a file's contents.
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <% set crypt = Server.CreateObject("Chilkat.Crypt2") success = crypt.UnlockComponent("Anything for 30-day trial") If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( crypt.LastErrorText) & "</pre>" End If ' Set the name of the hash algorithm. ' Other choices include "sha1", "sha384", "sha512", "md2", "md5", and "haval". crypt.HashAlgorithm = "md5" ' EncodingMode specifies the encoding of the hash output. ' It may be "hex", "url", "base64", or "quoted-printable". crypt.EncodingMode = "hex" ' Files of any type may be hashed -- it doesn't matter ' if the file is binary or text... hashStr = crypt.HashFileENC("/temp/something.dat") If (hashStr = vbNullString ) Then Response.Write "<pre>" & Server.HTMLEncode( crypt.LastErrorText) & "</pre>" End If Response.Write "<pre>" & Server.HTMLEncode( hashStr) & "</pre>" %> </body> </html> |
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