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.