Hashing and Digital Signatures

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6 Terms

1
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Hashes

  • Data as short string of text

  • One-Way Trip

    • Used to store passwords

Uses Case:

  • Verify downloaded Doc

  • Digital Signature

2
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Collison

  • Hashing eventually causing 2 of the same output

    • MD5 has a hashing problem

3
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Practical Hashing

  • Verify file is correct on a website

Hash Algo on downloaded file → Compare value to the value posted on website

  • Password Storage (Salted Hash)

4
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Salting

Salt = Adding random data to password when hashing

  • Everyone gets own salt amount

Rainbow Table

  • Tool to reverse engineer unsalted hash

5
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Digital Signature

Purpose:

  • Integrity

  • Authentication

  • Non-Repudation

  • Sign with private key

  • Verify with public key

6
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Digital Signature Example

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