What Keys are in the Key Vault?
Introduction
Azure Key Vault is a cloud-based security service that provides a secure store for secrets, including keys, passwords, and certificates. When it comes to storing cryptographic keys, Key Vault supports multiple key types and algorithms, ensuring the secure storage and management of sensitive data. In this article, we will explore the types of keys that can be stored in a Key Vault and what makes them secure.
Types of Keys in a Key Vault
1. RSA Keys
- RSA (Rivest-Shamir-Adleman) is a widely used public-key encryption algorithm.
- Key Vault supports RSA keys with key sizes ranging from 2048 to 4096 bits.
- RSA keys can be used for both encryption and decryption.
2. EC Keys
- EC (Elliptic Curve) keys are based on the principles of elliptic curve cryptography.
- Key Vault supports EC keys with key sizes ranging from 224 to 521 bits.
- EC keys are more resistant to attacks and offer improved security compared to RSA keys.
3. Symmetric Keys
- Symmetric keys are used for both encryption and decryption.
- Key Vault supports symmetric keys with key sizes ranging from 16 to 64 bytes.
- Symmetric keys are faster and more efficient than public-key algorithms.
Key Vault Features
Encryption
- All keys in a Key Vault are stored encrypted with a hierarchy of encryption keys.
- The encryption keys are protected by modules that are FIPS 140-2 compliant.
Access Control
- Key Vault supports role-based access control (RBAC) to restrict access to your vault, subscription, and resource group.
- Network access can be restricted using Private Link, firewall, and virtual networks.
Key Rotation
- Key Vault provides automatic key rotation for cryptographic keys.
- Key rotation ensures that old keys are replaced with new ones to maintain security.
Table: Key Types and Key Sizes
| Key Type | Key Size (Bits) |
|---|---|
| RSA | 2048, 3072, 4096 |
| EC | 224, 256, 384, 521 |
Conclusion
In conclusion, Azure Key Vault provides a secure store for various types of cryptographic keys, including RSA, EC, and symmetric keys. The encryption and access control features of Key Vault ensure that stored keys remain secure and accessible only to authorized personnel. By storing keys in a Key Vault, organizations can ensure the secure management of sensitive data and maintain compliance with industry regulations.