· 2 min read

TLS-DH-DSS-WITH-ARIA-128-CBC-SHA256 Cipher Suite

A breakdown of the Cipher Suite TLS_DH_DSS_WITH_ARIA_128_CBC_SHA256, its strengths, and its weaknesses.

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

AEGIS - ARIA

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

Cipher Block Chaining - CBC

Grade - D

Cipher Block Chaining (CBC) mode is vulnerable to the Lucky13 and POODLE (in TLS v1.2 and below) attacks. The Lucky13 attack exploits timing discrepancies in padding validation, allowing attackers to gradually reveal plaintext. The POODLE attack leverages padding errors to decrypt ciphertext by repeatedly modifying and sending it to the server, observing the error responses. These vulnerabilities arise from CBC’s handling of padding and error messages, making it less secure than modern encryption modes like Galois Counter Mode (GCM), which offer stronger integrity and confidentiality guarantees.

    Share:
    Back to Blog

    Related Posts

    View All Posts »
    Anti Spam Laws Around the World

    Anti Spam Laws Around the World

    Spam, unsolicited electronic communication, has become a global issue that affects individuals, businesses, and governments alike. Various countries have developed anti-spam laws to protect consumers from unwanted emails, messages, and other forms of digital marketing. These laws vary by region, but they generally focus on requiring consent from recipients, providing clear opt-out mechanisms, and penalizing violators with hefty fines. Below is an overview of key anti-spam regulations from the United States, Canada, New Zealand, Australia, Ireland, and the United Kingdom.

    What is Risk Reductin in Cyber Security - 50 Ways to Reduce Risk

    What is Risk Reductin in Cyber Security - 50 Ways to Reduce Risk

    Explore the essentials of risk reduction in cyber security and learn how to proactively protect your organization. Uncover strategies for minimizing vulnerabilities, strengthening defenses, and implementing best practices to lower potential cyber threats and ensure robust digital security.

    What is Risk Transfer in Cyber Security - 40 Ways to Transfer Risk

    What is Risk Transfer in Cyber Security - 40 Ways to Transfer Risk

    Discover how risk transfer in cyber security can safeguard your organization. Learn about strategies to mitigate potential cyber threats by shifting liability, utilizing insurance, and partnering with third-party experts. Explore effective ways to protect your digital assets.