Comments (3)
Going through the history, it appears that the initial implementation was never correct and therefore all versions of Data.HashFunction.SpookyHash have been producing incorrect values, checked against incorrect test vectors. Because of this, I am going to unlist all existing versions of this package from NuGet.
I will fix and re-release a fixed implementation as soon as I am able to.
from data.hashfunction.
Looking at the implementation, it appears that the root cause of the error is because it was incorrectly assumed that the Short(...) function call for byte lengths of 192 and less were just optimizations of the core hash implementation.
This assumption is incorrect -- SpookyHash has a slightly different hash generation implementation for input values of < 192 bytes in length.
The net effect is that we have been producing incorrect results for all values < 192 bytes in length.
from data.hashfunction.
I have verified that this has been resolved in v2.0.
from data.hashfunction.
Related Issues (20)
- Support for stream block processing HOT 5
- Performance HOT 2
- AsHexstring() function in CityHash gives reverse output HOT 4
- CRC Hash Error HOT 1
- Example in README is wrong signature HOT 1
- add t1ha (Fast Positive Hash) HOT 1
- Valid hash size for xxHash HOT 1
- Re-namespace and rename packages HOT 2
- Move LICENSE file include to Directory.Build.props
- Better separate hash functions that aren't variable size into distinct types.
- Review and normalize XML comments and function parameters
- Ensure cross-implementation consistency in variable names
- Re-order using statements
- Ensure 100% test coverage
- Support Span<byte> as Hash-function input
- announcement: PowerShell Module with this Hash functions
- Different strings, but the xxHash calculation result is the same HOT 1
- xxHash gives incorrect value when using AsHexString method. HOT 4
- Result of CityHash64 doesn't match the reference implementation on strings of 64*n (n > 1) lengths
- Outdated CityHash NuGet package with too slow 128-bit implementation HOT 1
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from data.hashfunction.