(ISC)2 Certified in Cybersecurity Practice Exam

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What bit size hash does MD5 produce?

128

MD5 produces a hash that is 128 bits in size. This hashing algorithm, developed by Ronald Rivest in 1991, generates a fixed-length output regardless of the size of the input data. The output is typically represented as a 32-character hexadecimal number, which corresponds to the 128 bits.

Due to its relatively fast computation and simple implementation, MD5 was widely used for checksums and verifying data integrity. However, it is important to note that MD5 is now considered cryptographically broken and unsuitable for further use in security-sensitive applications due to vulnerabilities that allow for collision attacks, where different inputs can produce the same hash output. Despite these weaknesses, the bit size of its output remains one of the defining characteristics of the MD5 algorithm.

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