AWS Key Management Service vs Vault: What are the differences?
AWS Key Management Service: Easily create and control the encryption keys used to encrypt your data. AWS Key Management Service (KMS) is a managed service that makes it easy for you to create and control the encryption keys used to encrypt your data, and uses Hardware Security Modules (HSMs) to protect the security of your keys. AWS Key Management Service is integrated with other AWS services including Amazon EBS, Amazon S3, and Amazon Redshift. AWS Key Management Service is also integrated with AWS CloudTrail to provide you with logs of all key usage to help meet your regulatory and compliance needs; Vault: Secure, store, and tightly control access to tokens, passwords, certificates, API keys, and other secrets in modern computing. Vault is a tool for securely accessing secrets. A secret is anything that you want to tightly control access to, such as API keys, passwords, certificates, and more. Vault provides a unified interface to any secret, while providing tight access control and recording a detailed audit log.
AWS Key Management Service and Vault are primarily classified as "Data Security Services" and "Secrets Management" tools respectively.
Some of the features offered by AWS Key Management Service are:
- Centralized Key Management
- Integrated with AWS services
- Encryption for all your applications
On the other hand, Vault provides the following key features:
- Secure Secret Storage: Arbitrary key/value secrets can be stored in Vault. Vault encrypts these secrets prior to writing them to persistent storage, so gaining access to the raw storage isn't enough to access your secrets. Vault can write to disk, Consul, and more.
- Dynamic Secrets: Vault can generate secrets on-demand for some systems, such as AWS or SQL databases. For example, when an application needs to access an S3 bucket, it asks Vault for credentials, and Vault will generate an AWS keypair with valid permissions on demand. After creating these dynamic secrets, Vault will also automatically revoke them after the lease is up.
- Data Encryption: Vault can encrypt and decrypt data without storing it. This allows security teams to define encryption parameters and developers to store encrypted data in a location such as SQL without having to design their own encryption methods.
"Integrated with AWS CloudTrail" is the top reason why over 3 developers like AWS Key Management Service, while over 11 developers mention "Secure" as the leading cause for choosing Vault.
Vault is an open source tool with 13.2K GitHub stars and 1.98K GitHub forks. Here's a link to Vault's open source repository on GitHub.
DigitalOcean, Redox Engine, and SoFi are some of the popular companies that use Vault, whereas AWS Key Management Service is used by Slack, StreetHawk, and Giant Swarm. Vault has a broader approval, being mentioned in 71 company stacks & 17 developers stacks; compared to AWS Key Management Service, which is listed in 27 company stacks and 5 developer stacks.