Vault vs Vault, Keycloak in Technology - What is The Difference?

Last Updated Feb 14, 2025

Vault secures your sensitive data by managing secrets and encryption keys with robust access controls and audit capabilities. Keycloak simplifies identity and access management by providing single sign-on (SSO), user federation, and strong authentication features. Discover how integrating Vault and Keycloak can strengthen your security infrastructure in the rest of this article.

Table of Comparison

Feature Vault Keycloak Vault vs Keycloak
Primary Purpose Secrets management and data encryption Identity and access management (IAM) Vault focuses on secure secrets storage; Keycloak manages user authentication and authorization.
Authentication Methods Tokens, AppRole, LDAP, AWS, Kubernetes OAuth2, OpenID Connect, SAML, Kerberos Vault supports machine-centric auth; Keycloak supports user-centric standard protocols.
Secret Types API keys, passwords, certificates, tokens Not designed for secrets storage Vault is optimized for storing and managing secrets; Keycloak is not.
Access Control Policy-based, fine-grained access control Role-based access control (RBAC) and user federation Vault enforces secret access policies; Keycloak manages user roles and permissions.
Integration Cloud platforms, Kubernetes, CI/CD pipelines Enterprise apps, social login, LDAP, Active Directory Vault integrates with infrastructure and automation tools; Keycloak integrates with identity providers and apps.
Use Cases Secret storage, encryption as a service, dynamic credential issuance Single sign-on (SSO), identity brokering, user management Vault for secrets and encryption; Keycloak for user authentication and identity management.
Open Source Yes, by HashiCorp Yes, by Red Hat Both are open source with strong community support.

Introduction to Vault and Keycloak

Vault is a highly secure secrets management tool by HashiCorp, designed to safeguard sensitive data such as API keys, passwords, and certificates through encryption and centralized access controls. Keycloak, an open-source identity and access management solution by Red Hat, offers Single Sign-On (SSO), user federation, and strong authentication mechanisms for modern applications. While Vault primarily focuses on secret storage and encryption, Keycloak specializes in user authentication and authorization.

Purpose and Core Functionality of Vault

Vault by HashiCorp is designed primarily for secure secret management, providing centralized storage, access control, and encryption as a service, whereas Keycloak focuses on identity and access management (IAM) with features like single sign-on (SSO), user federation, and identity brokering. Vault specializes in safeguarding sensitive data such as API keys, passwords, and certificates through dynamic secrets, encryption, and leasing mechanisms. Its core functionality revolves around secret lifecycle management and cryptographic operations, distinguishing it from Keycloak's user authentication and authorization capabilities.

Purpose and Core Functionality of Keycloak

Keycloak is an open-source identity and access management solution designed to provide secure authentication and authorization for applications and services. Its core functionality includes single sign-on (SSO), user federation, social login, and fine-grained authorization policies, enabling seamless identity management for enterprise environments. Unlike Vault, which primarily focuses on secrets management and data encryption, Keycloak specializes in managing user identities and access control across multiple platforms.

Vault vs Keycloak: Use Case Comparison

Vault excels in secrets management, providing secure storage, dynamic secrets, and encryption services crucial for protecting sensitive data in cloud-native environments. Keycloak specializes in identity and access management, offering robust authentication, single sign-on (SSO), and user federation for modern applications. While Vault is ideal for managing confidential information and securing infrastructure, Keycloak is better suited for managing user identities and access control across multiple applications.

Security and Identity Management: Key Differences

Vault specializes in secrets management and data protection by securely storing and controlling access to tokens, passwords, certificates, and encryption keys. Keycloak offers comprehensive identity and access management (IAM) solutions, including single sign-on (SSO), user federation, and multifactor authentication (MFA) to streamline user identity management. While Vault emphasizes dynamic secret generation and encryption as a service, Keycloak focuses on authentication, authorization, and user identity lifecycle management across applications.

Integration Capabilities and Ecosystem Support

Vault, developed by HashiCorp, excels in secure secret management and encryption services, offering robust integration capabilities with a wide array of cloud platforms, DevOps tools, and infrastructure providers through its extensive API and plugin ecosystem. Keycloak, an open-source identity and access management solution, provides seamless integration with numerous social login providers, LDAP servers, and enterprise identity standards such as SAML and OpenID Connect, supported by a vibrant community and Red Hat's ecosystem. While Vault emphasizes securing dynamic secrets and encryption as part of a larger security infrastructure, Keycloak focuses on authentication and authorization workflows, with both platforms offering complementary integration strengths tailored to modern application security needs.

Access Management and Authentication Approaches

Vault offers robust secret management with dynamic access control policies, leveraging token-based and identity-based authentication methods like AppRole, LDAP, and Kubernetes. Keycloak excels in identity and access management through centralized authentication, supporting OAuth2, OpenID Connect, SAML protocols, and user federation. While Vault emphasizes secure secret injection and fine-grained access control, Keycloak provides comprehensive user authentication, single sign-on, and role-based access to applications.

Performance, Scalability, and High Availability

Vault provides high-performance secret management with robust scalability through auto-unsealing and integrated storage backends, ensuring efficient response times under heavy loads. Keycloak excels in scalability and high availability by supporting clustered deployments with distributed sessions, optimizing user authentication performance across large-scale environments. Vault's architecture emphasizes durability and fault tolerance with leader election mechanisms, whereas Keycloak prioritizes seamless failover and session consistency for identity and access management services.

Deployment and Operational Considerations

Vault offers robust secrets management with dynamic secrets and encryption as a service, optimized for complex infrastructure deployment through secure storage backends and high-availability clustering. Keycloak focuses on identity and access management with features like single sign-on and user federation, requiring careful setup of database integration and load balancing for scalability. Operational considerations for Vault emphasize automated secret rotation and audit logging, while Keycloak demands regular user data synchronization and maintenance of authentication flow configurations.

Choosing Between Keycloak and Vault: Which Is Right for You?

Choosing between Keycloak and Vault depends on your security needs: Keycloak excels in identity and access management with features like single sign-on (SSO), user federation, and OAuth2/OpenID Connect support. Vault specializes in secrets management, offering secure storage, dynamic secrets, and encryption as a service to protect sensitive data across cloud and on-premises environments. Organizations seeking robust user authentication and authorization should opt for Keycloak, while those focused on secret storage, encryption key management, and data protection benefit more from Vault.

Vault, Keycloak Infographic

Vault vs Vault, Keycloak in Technology - What is The Difference?


About the author. JK Torgesen is a seasoned author renowned for distilling complex and trending concepts into clear, accessible language for readers of all backgrounds. With years of experience as a writer and educator, Torgesen has developed a reputation for making challenging topics understandable and engaging.

Disclaimer.
The information provided in this document is for general informational purposes only and is not guaranteed to be complete. While we strive to ensure the accuracy of the content, we cannot guarantee that the details mentioned are up-to-date or applicable to all scenarios. Topics about Vault, Keycloak are subject to change from time to time.

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