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

Moving paper-based processes online can result in significant cost savings. It is essential to ensure traceability, accountability, and audit for certain documents. This includes clear legal weight, data integrity, individual signed approval, and easy access to evidence from the workflow process. SigningHub allows for quick and efficient online approval of any business document or agreement, report, request, or package. SigningHub supports basic eSignatures, advanced eSignatures, and EU Qualified Signatures. Cryptographic digital signatures are the best way to prove that a document has not changed since its signing. Organizations must prove that their internal controls are in compliance with local laws and regulations. Ascertia has been providing world-class PKI products since years. SigningHub combines all of these capabilities and knowledge to offer the most secure way for you to sign documents.

The iCrypto SDK is designed to work with all of our iCrypto cloud services. It can be integrated into existing Enterprise Apps, or deployed as iCrypto App and used as a standalone password-less verification solution. The iCrypto SDK combines the most recent cryptography technologies with device-level security management to create a software token that can be used in a variety of industries as a biometric ID while on the move. iCrypto SDK offers authenticator PKI signatures and a range cryptographic protocols like TOTP/HOTP/OCRA/MTP. It also provides push-based authentication, network-based biometrics such iris scan, fingerprint, face/voice recognition, third-party authorizations, secure storage, context collection, and a host of security features.

4identity is a technological solution by Bit4id that empowers web apps with Digital Signature and Authentication processes. 4identity doesn't use Java Applets, or any third-party add-on. It is easy to use, compatible with all web browsers and works under all major operating systems. It uses a simple API to add Digital Signature and Strong Authentication web applications. 4identity is usability and provides a "1-click signing” user experience. Bit4id has extensive experience in the development and maintenance of tools and software for digital identity management and security based on Public Key Infrastructure. Bit4id is a leader in innovation in the PKI and digital identity markets in Europe and Latin America, providing solutions for managing over 10 million digital identities and processing more 50 million digital signatures per year.

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 is independent from Certificate Authorities and linked with a large number public CAs, both Digicert QuoVadis and GMO GlobalSign. Even though there are thousands of certificates and endpoints involved, switching between CAs is easy and straightforward. This means that vendor lock-in is no longer possible. KeyTalk has an internal CA that generates private certificates and keys. Have you ever used public certificates that were expensive for internal purposes? Did you find it difficult to use Microsoft CS or other private CAs for internal purposes? You will love our internal CA, private PKI certificate issuing. KeyTalk tracks the lifecycle of certificates in an automated manner. This allows you to have a complete overview of all certificates, including their validity, SAN, and name. You can also include used crypto keys and algorithms for internal and external certificates.

Nebula is a network management platform that allows innovative companies to manage their networks. After years of R&D, Slack opened sourced the project and began deploying it at scale. Nebula is a lightweight service, which is easy to distribute and configure on modern operating system. It can be used on a variety of hardware, including x86, arm and mips. Traditional VPNs have performance and availability bottlenecks. Nebula is not centralized: Encrypted tunnels can be created per-host or on-demand as required. Nebula was created by security engineers. It uses trusted crypto libraries (Noise), has a firewall with granular security groupings, and uses the best bits of PKI to authenticate hosts.

Cyber-security and data privacy platform to protect mobile and IoT apps. The app can be built and operated without any cyber-security incidents. SeaCat is a cyber security platform that was developed by experts. It includes all the data privacy and cyber-security must-haves. SeaCat deployment is easy and straightforward. SeaCat instantly increases your security level without the need for custom development. The user experience should not be compromised by cyber-security. SeaCat does not require any complicated configurations or procedures from the user. SeaCat uses all the latest cyber-security features such as biometrical authorization and hardware security modules. SeaCat's cyber-security platform consists a SeaCat SDK, which is to be added into a mobile or IoT app, the SeaCat Gateway, which is to be installed in the demilitarized area (DMZ) in front the application backend server, and SeaCat PKI, which is a service that provides access, enrolment, and identity management.