Best Public Key Infrastructure (PKI) Apps for iPhone of 2025

The iCrypto SDK is meticulously crafted to work seamlessly with the complete range of iCrypto's cloud services, allowing for integration into current Enterprise Applications or functioning independently as a password-less verification solution through the iCrypto App. Utilizing cutting-edge cryptographic technologies alongside robust device-level security and management, the iCrypto SDK stands out as a premier software token capable of serving as a biometric identification method across diverse sectors. It offers authenticator PKI signatures and supports an array of cryptographic protocols, including TOTP, HOTP, OCRA, and MTP, as well as push-based authentication methods. Additionally, the SDK encompasses both on-device and network-based biometric capabilities such as fingerprint scanning, iris recognition, and voice or face identification, along with features for third-party authorization, secure data storage, context collection, and numerous other security enhancements. This comprehensive approach ensures that organizations can maintain high levels of security while providing convenient access solutions for users.

Transitioning paper-based processes to digital formats can lead to considerable reductions in costs. It is essential for certain documents to maintain traceability, accountability, and audit trails, ensuring they carry legal significance, data integrity, and individual signed consent, while also providing accessible evidence of workflow processes. SigningHub facilitates rapid and efficient online approval for a variety of business documents, including agreements, reports, requests, and packages. This platform accommodates basic e-Signatures, Advanced e-Signatures, and EU Qualified Signatures. To guarantee that a document remains unchanged from the moment it is signed, employing cryptographic digital signatures is the optimal solution. Organizations must demonstrate that their internal controls are robust and comply with local laws and regulations. For many years, Ascertia has been a trusted provider of top-tier PKI products. By integrating this expertise, SigningHub offers a comprehensive and secure solution for document signing, ensuring organizations can meet both security and compliance needs effectively. Ultimately, this digital transformation not only enhances efficiency but also strengthens trust in the documentation process.

4identity, created by Bit4id, is an innovative technological solution designed to enhance web applications with Digital Signature and Authentication capabilities. This platform eliminates the need for Java Applets or other third-party plugins, ensuring a streamlined experience that is compatible with any web browser and operates seamlessly across the most popular operating systems. With its “integration-less” Engine, developers can easily incorporate Digital Signature and Strong Authentication into their web applications through a straightforward API. The usability of 4identity is highlighted by its “1-click signing” feature, which simplifies the signing process for users. Bit4id boasts a wealth of expertise in crafting software and tools focused on security and digital identity management, leveraging the power of Public Key Infrastructure (PKI). The company manages over 10 million digital identities and processes upwards of 50 million digital signatures annually, establishing itself as a frontrunner in the PKI and digital identity sector in both Europe and Latin America. With its commitment to innovation and user-friendly solutions, Bit4id continues to shape the future of digital identity management.

Strong digital security is possible with the world's most trusted on-prem identity and access management (IAM). Identity Enterprise is an integrated IAM platform which supports a wide range of consumer, worker, and citizen use cases. Identity Enterprise is ideal for high-assurance applications that require zero trust for thousands or millions users. It can be deployed on-premises as well as virtual appliances. Never trust, always verify. Your organization and user communities are protected both within and outside the perimeter. High assurance use case coverage includes credential-based access, smart cards issuance and best-in class MFA. This will protect your workforce, consumers, and citizens. User friction can be reduced with adaptive risk-based authentication and passwordless login. You can use digital certificates (PKI), which provide a higher level security, whether you have a physical smartcard or a virtual one.

KeyTalk operates independently from Certificate Authorities while being connected to numerous public CAs, including GMO GlobalSign and Digicert QuoVadis. Transitioning between different CAs is straightforward and efficient, even when managing thousands of certificates and endpoints, eliminating concerns about vendor lock-in. Additionally, KeyTalk features an integrated CA for generating private certificates and keys. Have you found yourself using costly public certificates for internal applications or experiencing the limitations of Microsoft CS and other private CAs? If so, you'll appreciate the benefits of our internal CA and private PKI certificate issuance. KeyTalk automates the management of your certificates throughout their lifecycle, ensuring that you have a comprehensive and current view of all your certificates, which includes details such as certificate names, SAN, and validity periods. Furthermore, it can provide information about the cryptographic keys and algorithms utilized for both internal and external certificates, enhancing your overall security management. With these capabilities, KeyTalk streamlines your entire certificate management process.

Forward-thinking organizations that prioritize high levels of availability and reliability utilize Nebula to manage their networks. After extensive research and development, Slack has made this project open-source following its successful large-scale implementation. Nebula is designed to be a lightweight service that can be easily distributed and configured across contemporary operating systems. It is compatible with various hardware architectures, including x86, arm, mips, and ppc. In contrast to conventional VPNs, which often suffer from availability and performance issues, Nebula offers a more efficient solution. Its decentralized structure enables the creation of encrypted tunnels on a per-host basis, activated as needed. Developed by experts in security, Nebula employs trusted cryptographic libraries, features an integrated firewall with detailed security groups, and incorporates the most effective elements of public key infrastructure for host authentication. This combination of features ensures a robust and flexible networking environment for modern demands.

SeaCat is a comprehensive cyber-security and data privacy platform designed specifically for mobile and IoT applications, ensuring that users can build and operate their apps without encountering any cyber-security incidents. Developed by a team of experts, SeaCat includes all essential features for robust cyber-security and data privacy, enabling a seamless deployment process. With SeaCat, users can enhance their security levels immediately without the need for any custom development work. Importantly, this platform prioritizes user experience, eliminating the need for complicated configurations or procedures. SeaCat incorporates state-of-the-art security measures, including biometric authentication and hardware security modules, making it a modern choice for developers. The platform comprises three key components: the SeaCat SDK, which integrates into mobile or IoT applications; the SeaCat Gateway, which is installed in the demilitarized zone (DMZ) in front of backend servers; and the SeaCat PKI service, which facilitates enrollment, access, and identity management. By utilizing SeaCat, users can confidently protect their applications while focusing on delivering a smooth user experience.