Which hash algorithm is best?

Probably the one most commonly used is SHA-256, which the National Institute of Standards and Technology (NIST) recommends using instead of MD5 or SHA-1. The SHA-256 algorithm returns hash value of 256-bits, or 64 hexadecimal digits.

Which hash is fastest?

SHA-1 is fastest hashing function with ~587.9 ms per 1M operations for short strings and 881.7 ms per 1M for longer strings. MD5 is 7.6% slower than SHA-1 for short strings and 1.3% for longer strings. SHA-256 is 15.5% slower than SHA-1 for short strings and 23.4% for longer strings.

Is FNV hash good?

The FNV speed allows one to quickly hash lots of data while maintaining a reasonable collision rate. The high dispersion of the FNV hashes makes them well suited for hashing nearly identical strings such as URLs, hostnames, filenames, text, IP addresses, etc.

Is SHA-1 still secure?

Since 2005, SHA-1 has not been considered secure against well-funded opponents; as of 2010 many organizations have recommended its replacement. NIST formally deprecated use of SHA-1 in 2011 and disallowed its use for digital signatures in 2013.

Is MD5 or SHA1 faster?

MD5 can have 128 bits length of message digest. Whereas SHA1 can have 160 bits length of message digest. The speed of MD5 is fast in comparison of SHA1’s speed. While the speed of SHA1 is slow in comparison of MD5’s speed.

Is 1099511628211 a prime?

The FNV_prime is the 64-bit FNV prime value: 1099511628211 (in hex, 0x100000001b3).

How is SHA1 different from MD5?

Why is SHA1 more secure than MD5?

Although slower, SHA is more secure than MD5 due to a variety of reasons. First, it produces a larger digest, 160-bit compared to 128-bit, so a brute force attack would be much more difficult to carry out. Another key difference is that SHA-1 uses 4 rounds where SHA-256 uses 64 and SHA- 386 and SHA-512 both use 80 [3].

Which is the latest version of Murmur hash function?

The current version is MurmurHash3, which yields a 32-bit or 128-bit hash value. When using 128-bits, the x86 and x64 versions do not produce the same values, as the algorithms are optimized for their respective platforms. MurmurHash3 was released alongside SMHasher—a hash function test suite.

Which is faster SHA256 or SHA512 hashing algorithm?

SHA256 was slower than SHA512. I did not investigate the randomness of the hash functions. But here is a good comparison of the hash functions that are missing in Ian Boyds answer . This points out that CityHash has some problems in corner cases.

How is MurmurHash vulnerable to HashDoS attacks?

Jean-Philippe Aumasson and Daniel J. Bernstein were able to show that even implementations of MurmurHash using a randomized seed are vulnerable to so-called HashDoS attacks. With the use of differential cryptanalysis they were able to generate inputs that would lead to a hash collision.

Is there a 32 bit version of MurmurHash2?

MurmurHash2 yields a 32-bit or 64-bit value. It came in multiple variants, including some that allowed incremental hashing and aligned or neutral versions. MurmurHash2 (32-bit, x86) – The original version; contains a flaw that weakens collision in some cases. MurmurHash2A (32-bit, x86) – A fixed variant using Merkle–Damgård construction.