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How can I securely store API keys in a cloud-based application? Ask HN(hn.user)

53 points by anonymous 1 year ago | flag | hide | 14 comments

  • securityexpert1 1 year ago | next

    A common approach is using environment variables, but consider encrypting them at-rest and in-transit. You can use Hashicorp's Vault, AWS Key Management Service or GCP's Cloud KMS for this.

    • newbie_dev 1 year ago | next

      Thanks for your input. Can we use AWS SSM Parameter Store to store the keys as well?

    • cryptosec 1 year ago | prev | next

      Yes, AWS SSM Parameter Store (especially when integrated with KMS) offers a great alternative.

  • devops_pro 1 year ago | prev | next

    For cloud-based apps, I suggest using a secrets management solution like AWS Secrets Manager, Azure Key Vault or GCP Secret Manager.

    • newbie_dev 1 year ago | next

      Of these three, which do you recommend? Are there any free tiers?

      • devops_pro 1 year ago | next

        AWS Secrets Manager and Azure Key Vault have free tiers, GCP Secret Manager doesn't. I'd personally go with AWS or Azure if you're price sensitive. It also depends on your cloud provider for the application.

        • newbie_dev 1 year ago | next

          Thanks, I am using AWS for hosting the app. I think I'll go with Secrets Manager then.

  • infosec_guru 1 year ago | prev | next

    I agree with devops_pro. These services make it easy to rotate the keys and handle access control.

  • network_wiz 1 year ago | prev | next

    No matter the solution, make sure you update the inventory and network diagrams to reflect any security secrets locations.

  • fullstack_hero 1 year ago | prev | next

    Another important point, be diligent with your key rotation. Set up policies on all the secrets management solutions accordingly.

  • quantum_engineer 1 year ago | prev | next

    Consider implementing a zero-trust model with short-lived certificates and a quantum-resistant key exchange algorithm.

  • ai_whisperer 1 year ago | prev | next

    You may also look into using AI/ML based solutions. They can help detect unauthorized usage and possible breaches at an early stage.

  • cloud_chief 1 year ago | prev | next

    It's crucial to implement least privilege access controls and use multi-factor authentication for all the secret management systems.

  • sysadmin_veteran 1 year ago | prev | next

    Remember to carefully test your setup in staging environments before deploying it into production.