Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

@article{177825,
        author = {Vinay kumar and Vivek Raj and Tukesh Kumar and Vaibhav Raj and Avadhesh Kumar Sharma},
        title = {Signature Verification: Methods, Challenges, and Applications},
        journal = {International Journal of Innovative Research in Technology},
        year = {2025},
        volume = {11},
        number = {12},
        pages = {1590-1594},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=177825},
        abstract = {Signature authentication. This is extremely relevant in cryptography and cybersecurity. It highlights three aspects. These are: Authenticating digital signatures. Signature belongs to a message or document. The goal of this model is to prove data integrity, origination, and non-repudiation. All these theories make it imperative for securing communication. 
So, how does the process work? It works with mathematical algorithms. Most work with a public key, they involve a private key. This pair lies in a public key infrastructure. 
In the basic way, it works: When the hash matches that of the newly computed hash of the received message, the signature is verified as authentic. Thereby confirming the identity of sender, respect of the integrity of the message. A wide use of methods regarding signature verification spans a lot of sectors, from secure email communications to online transactions, from document signing to blockchain technology. Advances in cryptographic algorithms have been made. RSA, DSA, and ECDSA algorithms have improved this method, which had gained reliability and efficiency. 
 But we have the threat. The rise of quantum computing foreshadows a real threat to current verification algorithms. The emergence has put post-quantum cryptography into the spotlight. Signature verification is an active field of inquiry, which seeks a balance between security and efficiency as technology evolves.},
        keywords = {Feature extraction, Fraud detection, Image processing, Signature forgery detection, Support Vector Machine (SVM)},
        month = {May},
        }