What is the bit output size for the SHA-2 hashing algorithm?

The SHA-2 hashing algorithm encompasses multiple hash functions that produce outputs of varying bit sizes, specifically 224-bit, 256-bit, 384-bit, and 512-bit. Among these functions, the 256-bit variant, known as SHA-256, is one of the most frequently used and recognized in various security applications, such as cryptocurrencies and digital signatures.

The correct choice points to the specific variant of SHA-2, which yields an output size of 256 bits. This particular size offers a balance of security and performance, making it suitable for a wide range of applications while significantly reducing the likelihood of collision attacks compared to shorter hash output sizes. The desire for a strong security posture in environments that require data integrity and authenticity underscores the relevance of SHA-256 today.

In contrast, other hash sizes under SHA-2, like 512-bit SHA-512, also exist. However, the focus here is on the specific mention of 256-bit, which is a cornerstone in many modern security protocols. The other options, such as 128-bit and 160-bit, pertain to older hashing algorithms (like MD5 and SHA-1) that are not part of the SHA-2 family. The risk profile associated with those older algorithms