NaCl (software)
- Not to be confused with Google Native Client.
| Original author(s) | Daniel J. Bernstein, Tanja Lange, Peter Schwabe |
|---|---|
| Initial release | 2008 |
| Operating system | UNIX-like |
| License | public domain |
| Website | nacl |
NaCl (pronounced "salt") is an abbreviation for "Networking and Cryptography library", a public domain "...high-speed software library for network communication, encryption, decryption, signatures, etc".[1]
NaCl was created by the mathematician and programmer Daniel J. Bernstein who is best known for the creation of qmail and Curve25519. The core team also includes Tanja Lange[2] and Peter Schwabe.[3] The main goal while creating NaCl, according to the paper, was to "avoid various types of cryptographic disaster suffered by previous cryptographic libraries".
Contents
Basic functions
Public-key cryptography
- Authenticated encryption using Curve25519, Salsa20, and Poly1305.
- Signatures using Ed25519.
- Key agreement using Curve25519.
Secret-key cryptography
- Authenticated encryption using Salsa20 and Poly1305.
- Encryption using Salsa20 or AES.
- Authentication using HMAC-SHA-512-256.
- One-time authentication using Poly1305.
Low-level functions
Key features
- No data flow from secrets to load addresses.
- No data flow from secrets to branch conditions.
- No padding oracles.
- Centralizing randomness.
- Avoiding unnecessary randomness.
- Extremely high speed.
Implementations
Reference implementation is written in C, often with several inline assembler. C++ and Python are handled as wrappers.[6]
NaCl has a variety of programming language bindings such as PHP,[7] and forms the basis for Libsodium, a cross-platform cryptography library created in 2013 which is API compatible with NaCl.
Alternative implementation
- Libsodium[8]—a portable, cross-compilable, installable, packageable, API-compatible version of NaCl.
- TweetNaCl[9]—a tiny C library, which fits in just 100 tweets (140 symbols each), but supports all NaCl functions.
See also
References
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External links
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