I need secure token storage for API integrations

For secure token storage in API integrations, the best approach depends on what kind of token it is and where you’re storing it.

Recommended options

1. Use a secrets manager

Best for:

• API keys
• OAuth refresh tokens
• long-lived access tokens
• credentials used by backend services

Examples:

• AWS Secrets Manager
• Azure Key Vault
• Google Secret Manager
• HashiCorp Vault

Benefits:

• encrypted at rest
• access-controlled via IAM/RBAC
• audit logging
• rotation support

2. Use OS / platform secure storage for client apps

Best for:

• desktop or mobile apps storing user tokens locally

Examples:

• iOS Keychain
• Android Keystore / EncryptedSharedPreferences
• Windows Credential Manager
• macOS Keychain
• Linux secret service / keyring

3. Use HttpOnly secure cookies for browser sessions

Best for:

• web apps with user sessions

Store session tokens in:

• HttpOnly
• Secure
• SameSite=Lax or Strict

This reduces exposure to XSS compared with localStorage.

If you must store tokens in a database

Use:

• strong encryption at rest
• application-level encryption for sensitive tokens
• key management via KMS
• least-privilege DB access
• token hashing only if the value never needs to be retrieved again

Security best practices

• Never hardcode tokens in source code
• Never put tokens in client-side JavaScript if avoidable
• Rotate tokens regularly
• Scope tokens narrowly
• Separate environment-specific secrets
• Log carefully: never print secrets
• Use short-lived access tokens and refresh tokens where possible
• Revoke on compromise

Simple rule of thumb

• Backend services: secrets manager
• Mobile/desktop apps: platform secure storage
• Web apps: HttpOnly secure cookies
• Database storage: only if encrypted and well-controlled

If you want, I can recommend a concrete design for your stack, like Node.js + React, Python + FastAPI, or mobile app token storage.