Paillier alternatives and similar packages
Based on the "Math" category.
Alternatively, view Paillier alternatives based on common mentions on social networks and blogs.

vector
An efficient implementation of Intindexed arrays (both mutable and immutable), with a powerful loop optimisation framework . 
statistics
A fast, high quality library for computing with statistics in Haskell. 
HerbiePlugin
GHC plugin that improves Haskell code's numerical stability 
hgeometry
HGeometry is a library for computing with geometric objects in Haskell. It defines basic geometric types and primitives, and it implements some geometric data structures and algorithms. The main two focusses are: (1) Strong type safety, and (2) implementations of geometric algorithms and data structures that have good asymptotic running time guarantees. 
dimensional
Dimensional library variant built on Data Kinds, Closed Type Families, TypeNats (GHC 7.8+). 
computationalalgebra
GeneralPurpose Computer Algebra System as an EDSL in Haskell 
mwcrandom
A very fast Haskell library for generating high quality pseudorandom numbers. 
numhask
A haskell numeric prelude, providing a clean structure for numbers and operations that combine them. 
poly
Fast polynomial arithmetic in Haskell (dense and sparse, univariate and multivariate, usual and Laurent) 
cf
"Exact" real arithmetic for Haskell using continued fractions (Not formally proven correct) 
optimization
Some numerical optimization methods implemented in Haskell 
equationalreasoning
Agdastyle equational reasoning in Haskell 
sbvPlugin
Formally prove properties of Haskell programs using SBV/SMT. 
safedecimal
Safe and very efficient arithmetic operations on fixed decimal point numbers 
polynomial
Haskell library for manipulating and evaluating polynomials 
monoidsubclasses
Subclasses of Monoid with a solid theoretical foundation and practical purposes 
eigen
Haskel binding for Eigen library. Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms. 
vectorthunbox
Deriver for unboxed vectors using Template Haskell
Access the most powerful time series database as a service
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They vary from L1 to L5 with "L5" being the highest.
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README
HsPaillier
A implenmentation of Paillier cryptosystem
The Paillier cryptosystem has some homomorphic properties.
 Homomorphic addition of plaintexts
 Homomorphic multiplication of plaintexts
Those properties mean that you can manipulate the ciphertext without decrypting it first.
For example,
(pubKey, prvKey) < P.genKey 256
let p = 2 :: Integer
c < P.encrypt pubKey p
let p' = 100 :: Integer
c' < P.encrypt pubKey p'
let c'' = P.cipherMul pubKey c c'
putStrLn $ "plaintext: " ++ show (P.decrypt prvKey pubKey c'')
The result will be 102 which is 2+100 (We just decrypt once!)
The above example is in the Main.hs
How to install
$ cabal configure
$ cabal build
$ cabal test