LearningRevealsv1

A digital signature verifies a message against a public key

Public-key mathematics connects the signature to both the message and signer’s private key.

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Output
A valid or invalid signature result
Input
A message, its digital signature and a trusted public key
Relationship

What connects the input and output?

Verification recomputes message-dependent values and checks the signature equation with the public key. A changed message or unrelated key fails the check.

Sources

1
  1. csrc.nist.gov: A digital signature verifies a message against a public keycsrc.nist.govUS-PUBLIC-DOMAIN

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