CREST Practitioner Security Analyst (CPSA) Practice

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Which hashing algorithm does NTLMv2 utilize for password hashing?

  1. RC4

  2. SHA-1

  3. MD5

  4. Triple DES

The correct answer is: MD5

NTLMv2 utilizes the MD5 hashing algorithm for password hashing. MD5 is a widely used cryptographic hash function that produces a 128-bit hash value, typically rendered as a 32-character hexadecimal number. In the context of NTLMv2, it securely hashes the password before it is stored or transmitted, providing a level of protection against certain types of attacks, including rainbow table attacks. While other algorithms are important in the broader context of security, they serve different functions. RC4 is a stream cipher used for encryption, which does not relate to password hashing directly. SHA-1, another hashing algorithm, is also used in various applications but is not the one employed by NTLMv2 for password hashing. Triple DES is an encryption algorithm rather than a hashing algorithm. Understanding these distinctions is crucial for recognizing how password security mechanisms like NTLMv2 operate and the importance of the hashing method chosen.