TLS-DH-DSS-WITH-CAMELLIA-128-GCM-SHA256 Cipher Suite

Key Exchange Mechanism

Diffie Hellman - DH

Grade - B

Static Diffie Hellman (DH) does not use emphemeral (temporary) keys, meaning it violates perfect forward secrecy. Ephemeral Diffie Hellman (EDH) should be used instead.

Authentication

Digital Signature Standard - DSS

Grade - C

Low usage

Cipher

Camellia - CAMELLIA

Grade - C

Low usage

Hash

Secure Hash Algorithm 256 Bit - SHA256

Grade - A

Improving greatly from SHA1, SHA-256 and above create secure hashes through robust cryptographic algorithms that ensure collision resistance and preimage resistance. They process input data in fixed-size blocks, applying complex mathematical transformations that make it computationally impractical to reverse-engineer the original data from its hash.

Key Size

128 Bit - 128

Grade - A

128-bit symmetric encryption keys are considered secure because they provide an astronomically large number of possible combinations (2^128), making brute-force attacks computationally infeasible with current technology. This level of security is sufficient for most practical purposes and is widely adopted in various encryption protocols.

Cipher Mode

Galois/Counter Mode - GCM

Grade - A

GCM (Galois Counter Mode) is a mode of operation for block ciphers, offering both encryption and authentication. Widely used in cipher suites, GCM ensures data confidentiality and integrity with high efficiency and performance. It combines the Counter (CTR) mode for encryption with a Galois field-based authentication tag for data integrity. GCM’s parallelizable nature makes it particularly fast and suitable for high-speed networks and secure communications. By incorporating GCM, cipher suites provide robust security against unauthorized access and tampering, making it a preferred choice for modern cryptographic protocols.