TLS_ECDHE_PSK_WITH_NULL_SHA
Breakdown of the TLS_ECDHE_PSK_WITH_NULL_SHA cipher suite
Cyber Security Rating for TLS_ECDHE_PSK_WITH_NULL_SHA - F
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Key Exchange Mechanism
ECDHE (Elliptic Curve Diffie-Hellman Ephemeral) is used because it enhances security through the use of ephemeral keys, which are temporary and unique for each session. This ensures that even if one session's key is compromised, past and future sessions remain secure. ECDHE provides perfect forward secrecy, meaning that the compromise of long-term keys does not affect the confidentiality of past communications. The ephemeral nature of the keys significantly reduces the risk of long-term data breaches and enhances the overall robustness of the cryptographic protocol.
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Authentication
PSK (Pre-Shared Key) cipher suites are used for authentication in secure communication protocols like TLS. They allow parties to establish a shared secret beforehand, ensuring confidentiality and integrity of data exchanges without the overhead of public key infrastructure (PKI), suitable for constrained environments or specific security requirements.
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Cipher
Null encryption ciphers are bad because they provide no encryption, leaving data transmitted over the network completely unprotected. This means that any information sent, such as passwords, personal details, or confidential messages, can be easily intercepted and read by anyone with access to the network traffic. Without encryption, the confidentiality and integrity of the data are compromised, making it highly vulnerable to eavesdropping, tampering, and unauthorized access. In essence, using Null encryption defeats the primary purpose of secure communication protocols, which is to safeguard data from potential threats.
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Hash
Null hashes are bad in cipher suites because they provide no integrity protection, making the communication vulnerable to undetected tampering or data corruption. This compromises the security by allowing potential attackers to alter messages without detection, undermining the confidentiality and trustworthiness of the communication.Null hashes are bad because they provide no integrity checks, leaving data transmitted over the network completely unprotected. This means that any information sent, such as passwords, personal details, or confidential messages, can be easily intercepted and read by anyone with access to the network traffic. Without encryption, the confidentiality and integrity of the data are compromised, making it highly vulnerable to eavesdropping, tampering, and unauthorized access. In essence, using Null encryption defeats the primary purpose of secure communication protocols, which is to safeguard data from potential threats.
Web infrastructure owners must ensure they only allow secure cipher suites to protect against potential security threats. Cipher suites determine the encryption algorithms and key exchange mechanisms used in HTTPS connections. Insecure cipher suites can leave data vulnerable to interception, decryption, and manipulation by malicious actors. By restricting to secure cipher suites, owners mitigate risks such as data breaches, unauthorized access, and compromise of sensitive information. This proactive measure helps maintain trust with users, ensures compliance with security standards, and safeguards the integrity and confidentiality of data transmitted over the web.
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