LibTomMath
A portable C library for multiple-precision integer arithmetic used in cryptographic and number theoretic applications.
What is LibTomMath?
LibTomMath is a free, open-source multiple-precision integer (MPI) library written entirely in C. It provides efficient implementations of large integer arithmetic operations, such as addition, multiplication, and modular exponentiation, which are fundamental to cryptography, number theory, and mathematical computing. The library solves the problem of handling integers larger than native machine word sizes with portable and optimized algorithms.
Developers and researchers working on cryptographic protocols, number theory applications, embedded systems, or any project requiring arbitrary-precision integer arithmetic in C.
Developers choose LibTomMath for its portability, correctness, and efficiency in C, along with comprehensive testing and flexible build systems (Make and CMake), making it a reliable alternative to proprietary or less portable MPI libraries.
Overview
LibTomMath is a free open source portable number theoretic multiple-precision integer library written entirely in C.
Use Cases
Best For
- Implementing cryptographic algorithms like RSA or elliptic curve cryptography
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