Verifying Signatures

Cryptography · Axiom Academy

Step-by-step walkthrough of digital signature verification and what happens when verification fails Excellent work! You've completed this signature verification example. Here's what we learned: Signature verification uses the public key: The verifier computes σ e mod n to recover the hash that was signed by the sender. Hash comparison is the core check: Verification succeeds if and only if the recovered hash matches the hash of the received message. Any tampering causes failure: If the message is modified or the wrong public key is used, the hashes won't match and verification fails. Security relies on the private key: Only someone with the private key d can create a valid signature that will verify with the public key (n, e) . This verification process ensures authenticity and integrity in digital communications. Understanding both successful and failed verification scenarios is crucial for cryptographic security!

This is the written version of the interactive lesson above. See the full Cryptography course.