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Digital Signature

Digital Signature


In this post, we will discuss about digital signature a widely used technique in computer security.

Digital Signature Algorithm

In cryptography digital signature present the authenticity of digital messages or documents. It follows the following  steps
  • Generate Key: We use Some algorithm to generate a public key and private key
  • Signing: We sign our documents or message with an algorithm that take private key and message string as input and gives a tag as output
  • Verify: We use an algorithm on the recipient side to check the authenticity of a document or message. This algorithm takes a tag, private key and documents or message string as input and returns accepted or rejected i.e document is correct or not.

  • Hashing: This is a set of an algorithm which takes an input string and return a fix length hash value know as a message digest.
  • Hashing Algorithms
    • MD5
    • SHA-0
    • SHA-1
    • SHA-2
    • SHA-3

Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.

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