What are the 2 hashing algorithms?

Secure Hash Algorithms (SHAs) are cryptographic functions used to ensure the integrity and authenticity of digital data. SHA-0, the predecessor of modern SHAs, was initially released in 1993 as a 160-bit hash function under the name "SHA". However, due to security concerns, SHA-0 is no longer considered secure and has been replaced by newer versions.

SHA-1, introduced later, is a 160-bit hash function that shares similarities with the earlier MD5 algorithm. It was widely used for various applications, including digital signatures and file verification. Despite its popularity, SHA-1 has also been found to be vulnerable to collisions, making it unsuitable for security-critical tasks.

To address the shortcomings of SHA-0 and SHA-1, the SHA-2 family of hash functions was developed. SHA-2 comprises two primary variants, SHA-256 and SHA-512, which differ primarily in their block sizes and output lengths. These algorithms offer improved security and are now widely adopted in various industries.

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