sha1

  1. J

    HMAC SHA1 hash hex input string

    Hi, I am new to HMAC, I need to perform HMAC SHA1 using some HEX input data and TEXT key to get some HEX output data, I have found the below VBA code to process some TEXT input data and get Base 64 output data and this works fine, if I use it in Excel and check one some website as below, I get...
  2. S

    Using SPA1 hashing algorithm in Excel to test authenticity of RFID chip

    Following are the instructions I've been provided by the manufacturer. I'm neither a developer nor knowledgeable about ascii, hex, or binary coding. I've found Excel and VBA SHA1 hashing algorithms (here) and tried to implement them. But for the test values provided I've never been able to...

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