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Sentinel Types

There are two types of sentinels:

  • Sentinels (symmetric key)
  • Anonymous sentinels (asymmetric key)

Sentinels (symmetric key)​

These keys use a symmetric encryption algorithm, where the same key is used to encrypt and decrypt data. The level of encryption depends on the license:

  • Community Level: AES-128
  • Premium Level: AES-128
  • Enterprise Level: AES-256

AES Algorithm​

The AES (Advanced Encryption Standard) algorithm is a widely used encryption standard known for its security and efficiency. AES operates on 128-bit data blocks and uses variable key lengths (128, 192, or 256 bits). For Lagertha sentinels:

  • AES-128: Used for the Community and Premium levels, offering a good balance between security and performance.
  • AES-256: Used for the Enterprise level, providing a higher level of security, ideal for environments requiring enhanced protection.

AES is renowned for its speed and security, making it a popular choice for encrypting sensitive data.

Anonymous Sentinels (asymmetric key)​

These keys use an asymmetric encryption algorithm, where a pair of keys (public and private) is used. The level of encryption depends on the license:

  • Community Level: Kyber512
  • Premium Level: Kyber512
  • Enterprise Level: Kyber1024

Kyber Algorithm​

Anonymous sentinels use the post-quantum encryption algorithm Kyber, which is part of the CRYSTALS suite (Cryptographic Suite for Algebraic Lattices). Kyber is designed to withstand potential attacks from quantum computers, providing long-term security. It employs techniques based on Euclidean lattices, making it particularly robust against advanced forms of cryptanalysis.

  • Kyber512: Provides a security level similar to AES-128.
  • Kyber1024: Provides a security level similar to AES-256.

Sentinel Creation Limits​

The number of sentinels a user can create also depends on the license:

  • Community: 200 sentinels
  • Premium: 10,000 sentinels
  • Enterprise: Unlimited