Biometric feature based human authentication systems provide various advantages over the classical authentication systems. Out of numerous biometric features in a human body, the fingerprint is the most commonly used biometric feature for the authentication of a person. Typically, the fingerprint-based systems rely on minutiae points information and use it directly as a user template. Several studies have shown that the use of minutiae points directly as a user template is unreliable as it may lead to the reconstruction of the original fingerprint. As databases are vulnerable to attacks, it is important to secure fingerprint information. In this paper, we propose a technique in which a strong 3-dimensional template is created from the fingerprint of a user. From the minutiae points of the fingerprint, minutiae triplets are computed, through which a secured user template is generated. The user template developed using the proposed technique is found to be robust and shows good revocability, diversity, security, and performance. The experimental results obtained on various fingerprint databases are extremely encouraging and demonstrate the effectiveness of the proposed technique.

与传统的身份验证系统相比，基于生物特征的人类身份验证系统具有多种优势。在人体的众多生物特征中，指纹是用于身份验证的最常用生物特征。通常，基于指纹的系统依赖细节点信息，并将其直接用作用户模板。多项研究表明，将细节点直接用作用户模板是不可靠的，因为它可能导致原始指纹的重建。由于数据库容易受到攻击，因此保护指纹信息非常重要。在本文中，我们提出了一种从用户的指纹创建强大的3D模板的技术。根据指纹的细节点，计算出细节三元组，通过它生成受保护的用户模板。发现使用所提出的技术开发的用户模板是健壮的，并且显示出良好的可撤销性，多样性，安全性和性能。在各种指纹数据库上获得的实验结果非常令人鼓舞，并证明了所提出技术的有效性。