What is difference between SHA-1 and SHA-2?

SHA1 is a cryptographic hash function which is designed by United States National Security Agency. It takes an input and produces a 160 bits hash value….Difference between SHA1 and SHA2 :

SHA1 SHA2
It generates smaller hash. While it generates larger hash.
Hash generated by SHA1 is weak. While hash generated by SHA2 is strong.

Why is SHA-2 better than SHA-1?

The SHA2 family of functions serve the same end as SHA1: provide a collision-resistant cryptographic hash of given input as fixed-length output. The NSA designed SHA2 to overcome theoretical breaks in SHA1. The new design improved security by increasing collision resistance.

Is SHA-2 faster than SHA-1?

Edit: SHA-1 algorithm is faster (up to 10 times faster than SHA-2 with 256 bits, and 20 times faster than SHA-2 with 512 bits – at least in the . NET implementation).

Why do we use SHA-2?

SHA-2 features a higher level of security than its predecessor. It was designed through The National Institute of Standards and Technology (NIST) and the National Security Agency (NSA). Entrust uses the SHA-1 hashing algorithm to sign all digital certificates.

Is SHA-2 slower than SHA1?

SHA2 and SHA3 are even more compute intensive than SHA1, and generally much slower.

Why is SHA-3 better than SHA-2?

​SHA-3 (and its variants SHA3-224, SHA3-256, SHA3-384, SHA3-512), is considered more secure than SHA-2 (SHA-224, SHA-256, SHA-384, SHA-512) for the same hash length. For example, SHA3-256 provides more cryptographic strength than SHA-256 for the same hash length (256 bits).

Is SHA-3 better than SHA-2?

How does SHA-3 compare to SHA-1 and SHA-2?

The main difference of SHA256 and SHA3 are their internal algorithm design. SHA2 (and SHA1) are built using the Merkle–Damgård structure. SHA3 on the other hand is built using a Sponge function and belongs to the Keccak-family.