41 lines
1.8 KiB
Markdown
41 lines
1.8 KiB
Markdown
---
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layout: "intro"
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page_title: "Vault vs. Amazon Key Management Service"
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sidebar_current: "vs-other-kms"
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description: |-
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Comparison between Vault and Amazon Key Management Service.
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---
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# Vault vs. Amazon KMS
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Amazon Key Management Service (KMS) is a service provided in the AWS ecosystem
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for encryption key management. It is backed by Hardware Security Modules (HSM)
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for physical security.
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Vault and KMS differ in the scope of problems they are trying to solve. KMS is
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focused on securely storing encryption keys and supporting cryptographic
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operations (encrypt and decrypt) using those keys. It supports access controls
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and auditing as well.
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In contrast, Vault provides a comprehensive secret management solution. The
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[`transit` backend](/docs/secrets/transit/index.html) provides similar
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capabilities as KMS, allowing for encryption keys to be stored and
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cryptographic operations to be performed. However, Vault goes much further than
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just key management.
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The flexible secrets engines allow Vault to handle any type of secret data,
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including database credentials, API keys, PKI keys, and encryption keys. Vault
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also supports dynamic secrets, generating credentials on-demand for
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fine-grained security controls, auditing, and non-repudiation.
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Lastly, Vault forces a mandatory lease contract with clients. All secrets read
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from Vault have an associated lease which enables operations to audit key
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usage, perform key rolling, and ensure automatic revocation. Vault provides
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multiple revocation mechanisms to give operators a clear "break glass"
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procedure after a potential compromise.
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Vault is an open source tool that can be deployed to any environment, and does
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not require any special hardware. This makes it well suited for cloud
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environments where HSMs are not available or are cost prohibitive.
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