circl

package module
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 Go to latest Published: Sep 23, 2020 License: BSD-3-Clause Imports: 0 Imported by: 0

README

CIRCL

CIRCL GoDoc Go Report Card codecov

CIRCL (Cloudflare Interoperable, Reusable Cryptographic Library) is a collection of cryptographic primitives written in Go. The goal of this library is to be used as a tool for experimental deployment of cryptographic algorithms targeting Post-Quantum (PQ) and Elliptic Curve Cryptography (ECC).

Security Disclaimer

🚨 This library is offered as-is, and without a guarantee. Therefore, it is expected that changes in the code, repository, and API occur in the future. We recommend to take caution before using this library in a production application since part of its content is experimental.

Installation

You can get it by typing:

go get -u github.com/cloudflare/circl

Versioning

Version numbers are Semvers. We release a minor version for new functionality, a major version for breaking API changes, and increment the patchlevel for bugfixes.

Implemented Primitives

Category Algorithms Description Applications
PQ Key Exchange SIDH SIDH provide key exchange mechanisms using ephemeral keys. Post-quantum key exchange in TLS
PQ Key Exchange cSIDH Isogeny based drop-in replacement for Diffie–Hellman Post-Quantum Key exchange.
PQ KEM SIKE SIKE is a key encapsulation mechanism (KEM). Post-quantum key exchange in TLS
Key Exchange X25519, X448 RFC-7748 provides new key exchange mechanisms based on Montgomery elliptic curves. TLS 1.3. Secure Shell.
Key Exchange FourQ One of the fastest elliptic curves at 128-bit security level. Experimental for key agreement and digital signatures.
Key Exchange / Digital signatures P-384 Our optimizations reduce the burden when moving from P-256 to P-384. ECDSA and ECDH using Suite B at top secret level.
Digital Signatures Ed25519, Ed448 RFC-8032 provides new signature schemes based on Edwards curves. Digital certificates and authentication.
PQ Digital Signatures Dilithium, Hybrid modes Lattice (Module LWE) based signature scheme Post-Quantum PKI
Work in Progress
Category Algorithms Description Applications
Hashing to Elliptic Curve Groups Several algorithms: Elligator2, Ristretto, SWU, Icart. Protocols based on elliptic curves require hash functions that map bit strings to points on an elliptic curve. VOPRF. OPAQUE. PAKE. Verifiable random functions.
Bilinear Pairings Plans for moving BN256 to stronger pairing curves. A bilineal pairing is a mathematical operation that enables the implementation of advanced cryptographic protocols, such as identity-based encryption (IBE), short digital signatures (BLS), and attribute-based encryption (ABE). Geo Key Manager, Randomness Beacon, Ethereum and other blockchain applications.
PQ KEM HRSS-SXY Lattice (NTRU) based key encapsulation mechanism. Key exchange for low-latency environments
PQ KEM Kyber Lattice (M-LWE) based key encapsulation mechanism. Post-Quantum Key exchange
PQ Digital Signatures SPHINCS+ Stateless hash-based signature scheme Post-Quantum PKI

Testing and Benchmarking

Library comes with number of make targets which can be used for testing and benchmarking:

  • test performs testing of the binary.
  • bench runs benchmarks.
  • cover produces coverage.
  • lint runs set of linters on the code base.

Contributing

To contribute, fork this repository and make your changes, and then make a Pull Request. A Pull Request requires approval of the admin team and a successful CI build.

License

The project is licensed under the BSD-3-Clause License.

Documentation

Overview

Package circl provides a collection of cryptographic primitives. The goal of this module is to be used as a tool for experimental deployment of cryptographic algorithms targeting Post-Quantum (PQ) and Elliptic Curve Cryptography (ECC).

Following blog post describes ideas behind CIRCL in more details: https://blog.cloudflare.com/introducing-circl/

Source Files

View all Source files

Directories

Path Synopsis
dh
Package dh provides variety of Diffie-Hellman key exchange methods.
 Package dh provides variety of Diffie-Hellman key exchange methods.
csidh
Package csidh implements commutative supersingular isogeny-based Diffie-Hellman key exchange algorithm (CSIDH) resulting from the group action.
 Package csidh implements commutative supersingular isogeny-based Diffie-Hellman key exchange algorithm (CSIDH) resulting from the group action.
curve4q
Package curve4q implements Diffie-Hellman operations using the FourQ curve at the 128-bit security level.
 Package curve4q implements Diffie-Hellman operations using the FourQ curve at the 128-bit security level.
sidh
Package sidh provides implementation of experimental post-quantum Supersingular Isogeny Diffie-Hellman (SIDH) as well as Supersingular Isogeny Key Encapsulation (SIKE).
 Package sidh provides implementation of experimental post-quantum Supersingular Isogeny Diffie-Hellman (SIDH) as well as Supersingular Isogeny Key Encapsulation (SIKE).
sidh/internal/common
Package common provides types, variables, constants and functions commonly used in SIDH or SIKE.
 Package common provides types, variables, constants and functions commonly used in SIDH or SIKE.
sidh/internal/p434
sidh/internal/p503
Package p503 provides implementation of field arithmetic used in SIDH and SIKE.
 Package p503 provides implementation of field arithmetic used in SIDH and SIKE.
sidh/internal/p751
Package p751 provides implementation of field arithmetic used in SIDH and SIKE.
 Package p751 provides implementation of field arithmetic used in SIDH and SIKE.
x25519
Package x25519 provides Diffie-Hellman functions as specified in RFC-7748.
 Package x25519 provides Diffie-Hellman functions as specified in RFC-7748.
x448
Package x448 provides Diffie-Hellman functions as specified in RFC-7748.
 Package x448 provides Diffie-Hellman functions as specified in RFC-7748.
ecc
Package ecc provides implementation of arithmetic on some elliptic curves.
 Package ecc provides implementation of arithmetic on some elliptic curves.
fourq
Package fourq provides elliptic curve operations over FourQ curve.
 Package fourq provides elliptic curve operations over FourQ curve.
goldilocks
Package goldilocks provides elliptic curve operations over the goldilocks curve.
 Package goldilocks provides elliptic curve operations over the goldilocks curve.
p384
Package p384 provides optimized elliptic curve operations on the P-384 curve.
 Package p384 provides optimized elliptic curve operations on the P-384 curve.
internal
conv
shake
Package shake provides implementation of SHA-3 and cSHAKE This code has been copied from golang.org/x/crypto/sha3 and heavily modified.
 Package shake provides implementation of SHA-3 and cSHAKE This code has been copied from golang.org/x/crypto/sha3 and heavily modified.
test
Package math provides some utility functions for big integers.
 Package math provides some utility functions for big integers.
fp25519
Package fp25519 provides prime field arithmetic over GF(2^255-19).
 Package fp25519 provides prime field arithmetic over GF(2^255-19).
fp448
Package fp448 provides prime field arithmetic over GF(2^448-2^224-1).
 Package fp448 provides prime field arithmetic over GF(2^448-2^224-1).
mlsbset
Package mlsbset provides a constant-time exponentiation method with precomputation.
 Package mlsbset provides a constant-time exponentiation method with precomputation.
Package sign provides unified interfaces for signature schemes.
 Package sign provides unified interfaces for signature schemes.
dilithium
dilithium implements the CRYSTALS-Dilithium signature schemes as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf Each of the eight different modes of Dilithium is implemented by a subpackage.
 dilithium implements the CRYSTALS-Dilithium signature schemes as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf Each of the eight different modes of Dilithium is implemented by a subpackage.
dilithium/internal/common
dilithium/internal/common/params
dilithium/mode1
mode1 implements the CRYSTALS-Dilithium signature scheme Dilithium1 as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
 mode1 implements the CRYSTALS-Dilithium signature scheme Dilithium1 as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
dilithium/mode1/internal
dilithium/mode1aes
mode1aes implements the CRYSTALS-Dilithium signature scheme Dilithium1-AES as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
 mode1aes implements the CRYSTALS-Dilithium signature scheme Dilithium1-AES as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
dilithium/mode1aes/internal
dilithium/mode2
mode2 implements the CRYSTALS-Dilithium signature scheme Dilithium2 as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
 mode2 implements the CRYSTALS-Dilithium signature scheme Dilithium2 as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
dilithium/mode2/internal
dilithium/mode2aes
mode2aes implements the CRYSTALS-Dilithium signature scheme Dilithium2-AES as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
 mode2aes implements the CRYSTALS-Dilithium signature scheme Dilithium2-AES as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
dilithium/mode2aes/internal
dilithium/mode3
mode3 implements the CRYSTALS-Dilithium signature scheme Dilithium3 as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
 mode3 implements the CRYSTALS-Dilithium signature scheme Dilithium3 as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
dilithium/mode3/internal
dilithium/mode3aes
mode3aes implements the CRYSTALS-Dilithium signature scheme Dilithium3-AES as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
 mode3aes implements the CRYSTALS-Dilithium signature scheme Dilithium3-AES as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
dilithium/mode3aes/internal
dilithium/mode4
mode4 implements the CRYSTALS-Dilithium signature scheme Dilithium4 as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
 mode4 implements the CRYSTALS-Dilithium signature scheme Dilithium4 as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
dilithium/mode4/internal
dilithium/mode4aes
mode4aes implements the CRYSTALS-Dilithium signature scheme Dilithium4-AES as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
 mode4aes implements the CRYSTALS-Dilithium signature scheme Dilithium4-AES as submitted to round2 of the NIST PQC competition and described in https://pq-crystals.org/dilithium/data/dilithium-specification-round2.pdf
dilithium/mode4aes/internal
ed25519
Package ed25519 implements Ed25519 signature scheme as described in RFC-8032.
 Package ed25519 implements Ed25519 signature scheme as described in RFC-8032.
ed448
Package ed448 implements Ed448 signature scheme as described in RFC-8032.
 Package ed448 implements Ed448 signature scheme as described in RFC-8032.
eddilithium3
Package eddilithium3 implements the hybrid signature scheme Ed25519-Dilithium3.
 Package eddilithium3 implements the hybrid signature scheme Ed25519-Dilithium3.
eddilithium4
Package eddilithium4 implements the hybrid signature scheme Ed448-Dilithium4.
 Package eddilithium4 implements the hybrid signature scheme Ed448-Dilithium4.
schemes
Package schemes contains a register of signature algorithms.
 Package schemes contains a register of signature algorithms.
Package simd provides parallel implementations of some primitives.
 Package simd provides parallel implementations of some primitives.
keccakf1600
Package keccakf1600 provides a four-way Keccak-f[1600] permutation in parallel.
 Package keccakf1600 provides a four-way Keccak-f[1600] permutation in parallel.

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