AEADVerschlüsselungen

AEADVerschlüsselungen refers to a category of encryption algorithms designed to provide authenticated encryption with associated data (AEAD). This type of encryption combines the confidentiality of traditional encryption with data integrity and authenticity checks. In essence, AEAD schemes not only scramble the data to make it unreadable to unauthorized parties but also produce a tag that verifies the data has not been tampered with and originates from the expected sender.

The "associated data" in AEAD is crucial. It refers to unencrypted information that is authenticated but not encrypted itself. This can include metadata like headers in network packets or file formats, which are important for context but do not need to be secret. By authenticating this associated data alongside the encrypted ciphertext, AEAD ensures that the entire message, including its contextual information, remains unaltered and genuine.

Popular AEAD algorithms include AES-GCM (Galois/Counter Mode) and ChaCha20-Poly1305. These are widely adopted in various security protocols and applications, such as TLS/SSL for secure web communication, IPsec for network security, and disk encryption. The primary benefit of using AEAD is its ability to prevent a range of attacks that target the separation of encryption and authentication, such as padding oracle attacks. By integrating these functionalities into a single, efficient algorithm, AEAD simplifies implementation and enhances overall security.