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crystals-dilithium

Pure Rust implementation of:

  • CRYSTALS-Dilithium (dilithium2, dilithium3, dilithium5)
  • ML-DSA (ml_dsa_44, ml_dsa_65, ml_dsa_87)

The codebase is based on the reference implementation and includes test coverage against internal vectors and ACVP-style datasets.

Security note

This project has not undergone a formal third-party security audit. Use in production should include your own security review.

Build

cargo build --release

Quick start (Dilithium)

use crystals_dilithium::dilithium2::Keypair;let seed = [42u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let signature = keypair.sign(msg);let is_verified = keypair.verify(msg,&signature);assert!(is_verified);

Quick start (ML-DSA)

use crystals_dilithium::ml_dsa_44::Keypair;use crystals_dilithium::RandomMode;let seed = [7u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let sig = keypair.sign(msg,None,RandomMode::Deterministic).unwrap();assert!(keypair.verify(msg,&sig,None));

ML-DSA Modes

ML-DSA APIs support three signing/verification flows:

  1. Pure mode
  • Sign: sign(msg, ctx, rand)
  • Verify: verify(msg, sig, ctx)
  1. Pre-hash mode
  • Sign: prehash_sign(msg, ctx, rand, ph)
  • Verify: prehash_verify(msg, sig, ctx, ph)
  • ph is one of the supported pre-hash algorithms from prehash::PH.
  1. Internal mode (ACVP/internal testing only)
  • Requires feature: acvp-internal
  • Sign/verify pre-built inputs: sign_internal, verify_internal, sign_mu, verify_mu

RandomMode controls nonce/randomness behavior in ML-DSA signing:

  • RandomMode::Deterministic: deterministic signing
  • RandomMode::Hedged: randomized (RNG-backed) signing
  • RandomMode::Fixed(bytes): fixed randomness stream (acvp-internal only)

Notes:

  • ctx is optional context data and must be at most 255 bytes.
  • API variants are available in ml_dsa_44, ml_dsa_65, and ml_dsa_87.

Mode examples

Pure mode:

use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[9u8;32])).unwrap();let msg = b"pure mode";let sig = kp.sign(msg,Some(b"app:v1"),RandomMode::Deterministic).unwrap();assert!(kp.verify(msg,&sig,Some(b"app:v1")));

Pre-hash mode:

use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::prehash::PH;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[10u8;32])).unwrap();let msg = b"prehash mode";let sig = kp
.prehash_sign(msg,None,RandomMode::Hedged,PH::SHA256).unwrap();assert!(kp.prehash_verify(msg,&sig,None,PH::SHA256));

Internal mode (acvp-internal) is intended for ACVP/internal vectors only.

Error handling (recommended)

Key generation and key deserialization now return Result to avoid panics on malformed input.

use crystals_dilithium::dilithium2::PublicKey;fnparse_public_key(bytes:&[u8]) -> Result<PublicKey, crystals_dilithium::Error>{PublicKey::from_bytes(bytes)}

The same applies to:

  • Keypair::generate(...)
  • Keypair::from_bytes(...)
  • SecretKey::from_bytes(...)
  • PublicKey::from_bytes(...)

Testing

cargo test

ACVP internal test vectors are feature-gated:

cargo test --test acvp_internal --features acvp-internal

Benchmarks

Criterion benchmarks:

cargo bench

Docs

cargo doc --open

License

GPL-3.0-only. See LICENSE.

About

Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm

Resources

Readme
GPL-3.0 license
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Custom properties

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29 stars

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0 watching

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9 forks
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GitHub - Quantum-Blockchains/dilithium: Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm · GitHub
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crystals-dilithium
Pure Rust implementation of:
  • CRYSTALS-Dilithium (dilithium2, dilithium3, dilithium5)
  • ML-DSA (ml_dsa_44, ml_dsa_65, ml_dsa_87)
The codebase is based on the reference implementation and includes test coverage against internal vectors and ACVP-style datasets.
Security note
This project has not undergone a formal third-party security audit. Use in production should include your own security review.
Build
cargo build --release
Quick start (Dilithium)
use crystals_dilithium::dilithium2::Keypair;let seed = [42u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let signature = keypair.sign(msg);let is_verified = keypair.verify(msg,&signature);assert!(is_verified);
Quick start (ML-DSA)
use crystals_dilithium::ml_dsa_44::Keypair;use crystals_dilithium::RandomMode;let seed = [7u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let sig = keypair.sign(msg,None,RandomMode::Deterministic).unwrap();assert!(keypair.verify(msg,&sig,None));
ML-DSA Modes
ML-DSA APIs support three signing/verification flows:
  1. Pure mode
  • Sign: sign(msg, ctx, rand)
  • Verify: verify(msg, sig, ctx)
  1. Pre-hash mode
  • Sign: prehash_sign(msg, ctx, rand, ph)
  • Verify: prehash_verify(msg, sig, ctx, ph)
  • ph is one of the supported pre-hash algorithms from prehash::PH.
  1. Internal mode (ACVP/internal testing only)
  • Requires feature: acvp-internal
  • Sign/verify pre-built inputs: sign_internal, verify_internal, sign_mu, verify_mu
RandomMode controls nonce/randomness behavior in ML-DSA signing:
  • RandomMode::Deterministic: deterministic signing
  • RandomMode::Hedged: randomized (RNG-backed) signing
  • RandomMode::Fixed(bytes): fixed randomness stream (acvp-internal only)
Notes:
  • ctx is optional context data and must be at most 255 bytes.
  • API variants are available in ml_dsa_44, ml_dsa_65, and ml_dsa_87.
Mode examples
Pure mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[9u8;32])).unwrap();let msg = b"pure mode";let sig = kp.sign(msg,Some(b"app:v1"),RandomMode::Deterministic).unwrap();assert!(kp.verify(msg,&sig,Some(b"app:v1")));
Pre-hash mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::prehash::PH;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[10u8;32])).unwrap();let msg = b"prehash mode";let sig = kp
.prehash_sign(msg,None,RandomMode::Hedged,PH::SHA256).unwrap();assert!(kp.prehash_verify(msg,&sig,None,PH::SHA256));
Internal mode (acvp-internal) is intended for ACVP/internal vectors only.
Error handling (recommended)
Key generation and key deserialization now return Result to avoid panics on malformed input.
use crystals_dilithium::dilithium2::PublicKey;fnparse_public_key(bytes:&[u8]) -> Result<PublicKey, crystals_dilithium::Error>{PublicKey::from_bytes(bytes)}
The same applies to:
  • Keypair::generate(...)
  • Keypair::from_bytes(...)
  • SecretKey::from_bytes(...)
  • PublicKey::from_bytes(...)
Testing
cargo test
ACVP internal test vectors are feature-gated:
cargo test --test acvp_internal --features acvp-internal
Benchmarks
Criterion benchmarks:
cargo bench
Docs
cargo doc --open
License
GPL-3.0-only. See LICENSE.
About
Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm
Resources
Readme
GPL-3.0 license
Activity
Custom properties
Stars
29 stars
Watchers
0 watching
Forks
9 forks
Report repository
Releases
Packages
Used by
Contributors
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GitHub - Quantum-Blockchains/dilithium: Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm · GitHub
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crystals-dilithium
Pure Rust implementation of:
  • CRYSTALS-Dilithium (dilithium2, dilithium3, dilithium5)
  • ML-DSA (ml_dsa_44, ml_dsa_65, ml_dsa_87)
The codebase is based on the reference implementation and includes test coverage against internal vectors and ACVP-style datasets.
Security note
This project has not undergone a formal third-party security audit. Use in production should include your own security review.
Build
cargo build --release
Quick start (Dilithium)
use crystals_dilithium::dilithium2::Keypair;let seed = [42u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let signature = keypair.sign(msg);let is_verified = keypair.verify(msg,&signature);assert!(is_verified);
Quick start (ML-DSA)
use crystals_dilithium::ml_dsa_44::Keypair;use crystals_dilithium::RandomMode;let seed = [7u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let sig = keypair.sign(msg,None,RandomMode::Deterministic).unwrap();assert!(keypair.verify(msg,&sig,None));
ML-DSA Modes
ML-DSA APIs support three signing/verification flows:
  1. Pure mode
  • Sign: sign(msg, ctx, rand)
  • Verify: verify(msg, sig, ctx)
  1. Pre-hash mode
  • Sign: prehash_sign(msg, ctx, rand, ph)
  • Verify: prehash_verify(msg, sig, ctx, ph)
  • ph is one of the supported pre-hash algorithms from prehash::PH.
  1. Internal mode (ACVP/internal testing only)
  • Requires feature: acvp-internal
  • Sign/verify pre-built inputs: sign_internal, verify_internal, sign_mu, verify_mu
RandomMode controls nonce/randomness behavior in ML-DSA signing:
  • RandomMode::Deterministic: deterministic signing
  • RandomMode::Hedged: randomized (RNG-backed) signing
  • RandomMode::Fixed(bytes): fixed randomness stream (acvp-internal only)
Notes:
  • ctx is optional context data and must be at most 255 bytes.
  • API variants are available in ml_dsa_44, ml_dsa_65, and ml_dsa_87.
Mode examples
Pure mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[9u8;32])).unwrap();let msg = b"pure mode";let sig = kp.sign(msg,Some(b"app:v1"),RandomMode::Deterministic).unwrap();assert!(kp.verify(msg,&sig,Some(b"app:v1")));
Pre-hash mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::prehash::PH;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[10u8;32])).unwrap();let msg = b"prehash mode";let sig = kp
.prehash_sign(msg,None,RandomMode::Hedged,PH::SHA256).unwrap();assert!(kp.prehash_verify(msg,&sig,None,PH::SHA256));
Internal mode (acvp-internal) is intended for ACVP/internal vectors only.
Error handling (recommended)
Key generation and key deserialization now return Result to avoid panics on malformed input.
use crystals_dilithium::dilithium2::PublicKey;fnparse_public_key(bytes:&[u8]) -> Result<PublicKey, crystals_dilithium::Error>{PublicKey::from_bytes(bytes)}
The same applies to:
  • Keypair::generate(...)
  • Keypair::from_bytes(...)
  • SecretKey::from_bytes(...)
  • PublicKey::from_bytes(...)
Testing
cargo test
ACVP internal test vectors are feature-gated:
cargo test --test acvp_internal --features acvp-internal
Benchmarks
Criterion benchmarks:
cargo bench
Docs
cargo doc --open
License
GPL-3.0-only. See LICENSE.
About
Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm
Resources
Readme
GPL-3.0 license
Activity
Custom properties
Stars
29 stars
Watchers
0 watching
Forks
9 forks
Report repository
Releases
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Used by
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GitHub - Quantum-Blockchains/dilithium: Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm · GitHub
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crystals-dilithium
Pure Rust implementation of:
  • CRYSTALS-Dilithium (dilithium2, dilithium3, dilithium5)
  • ML-DSA (ml_dsa_44, ml_dsa_65, ml_dsa_87)
The codebase is based on the reference implementation and includes test coverage against internal vectors and ACVP-style datasets.
Security note
This project has not undergone a formal third-party security audit. Use in production should include your own security review.
Build
cargo build --release
Quick start (Dilithium)
use crystals_dilithium::dilithium2::Keypair;let seed = [42u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let signature = keypair.sign(msg);let is_verified = keypair.verify(msg,&signature);assert!(is_verified);
Quick start (ML-DSA)
use crystals_dilithium::ml_dsa_44::Keypair;use crystals_dilithium::RandomMode;let seed = [7u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let sig = keypair.sign(msg,None,RandomMode::Deterministic).unwrap();assert!(keypair.verify(msg,&sig,None));
ML-DSA Modes
ML-DSA APIs support three signing/verification flows:
  1. Pure mode
  • Sign: sign(msg, ctx, rand)
  • Verify: verify(msg, sig, ctx)
  1. Pre-hash mode
  • Sign: prehash_sign(msg, ctx, rand, ph)
  • Verify: prehash_verify(msg, sig, ctx, ph)
  • ph is one of the supported pre-hash algorithms from prehash::PH.
  1. Internal mode (ACVP/internal testing only)
  • Requires feature: acvp-internal
  • Sign/verify pre-built inputs: sign_internal, verify_internal, sign_mu, verify_mu
RandomMode controls nonce/randomness behavior in ML-DSA signing:
  • RandomMode::Deterministic: deterministic signing
  • RandomMode::Hedged: randomized (RNG-backed) signing
  • RandomMode::Fixed(bytes): fixed randomness stream (acvp-internal only)
Notes:
  • ctx is optional context data and must be at most 255 bytes.
  • API variants are available in ml_dsa_44, ml_dsa_65, and ml_dsa_87.
Mode examples
Pure mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[9u8;32])).unwrap();let msg = b"pure mode";let sig = kp.sign(msg,Some(b"app:v1"),RandomMode::Deterministic).unwrap();assert!(kp.verify(msg,&sig,Some(b"app:v1")));
Pre-hash mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::prehash::PH;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[10u8;32])).unwrap();let msg = b"prehash mode";let sig = kp
.prehash_sign(msg,None,RandomMode::Hedged,PH::SHA256).unwrap();assert!(kp.prehash_verify(msg,&sig,None,PH::SHA256));
Internal mode (acvp-internal) is intended for ACVP/internal vectors only.
Error handling (recommended)
Key generation and key deserialization now return Result to avoid panics on malformed input.
use crystals_dilithium::dilithium2::PublicKey;fnparse_public_key(bytes:&[u8]) -> Result<PublicKey, crystals_dilithium::Error>{PublicKey::from_bytes(bytes)}
The same applies to:
  • Keypair::generate(...)
  • Keypair::from_bytes(...)
  • SecretKey::from_bytes(...)
  • PublicKey::from_bytes(...)
Testing
cargo test
ACVP internal test vectors are feature-gated:
cargo test --test acvp_internal --features acvp-internal
Benchmarks
Criterion benchmarks:
cargo bench
Docs
cargo doc --open
License
GPL-3.0-only. See LICENSE.
About
Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm
Resources
Readme
GPL-3.0 license
Activity
Custom properties
Stars
29 stars
Watchers
0 watching
Forks
9 forks
Report repository
Releases
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Used by
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GitHub - Quantum-Blockchains/dilithium: Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm · GitHub
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Repository files navigation
crystals-dilithium
Pure Rust implementation of:
  • CRYSTALS-Dilithium (dilithium2, dilithium3, dilithium5)
  • ML-DSA (ml_dsa_44, ml_dsa_65, ml_dsa_87)
The codebase is based on the reference implementation and includes test coverage against internal vectors and ACVP-style datasets.
Security note
This project has not undergone a formal third-party security audit. Use in production should include your own security review.
Build
cargo build --release
Quick start (Dilithium)
use crystals_dilithium::dilithium2::Keypair;let seed = [42u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let signature = keypair.sign(msg);let is_verified = keypair.verify(msg,&signature);assert!(is_verified);
Quick start (ML-DSA)
use crystals_dilithium::ml_dsa_44::Keypair;use crystals_dilithium::RandomMode;let seed = [7u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let sig = keypair.sign(msg,None,RandomMode::Deterministic).unwrap();assert!(keypair.verify(msg,&sig,None));
ML-DSA Modes
ML-DSA APIs support three signing/verification flows:
  1. Pure mode
  • Sign: sign(msg, ctx, rand)
  • Verify: verify(msg, sig, ctx)
  1. Pre-hash mode
  • Sign: prehash_sign(msg, ctx, rand, ph)
  • Verify: prehash_verify(msg, sig, ctx, ph)
  • ph is one of the supported pre-hash algorithms from prehash::PH.
  1. Internal mode (ACVP/internal testing only)
  • Requires feature: acvp-internal
  • Sign/verify pre-built inputs: sign_internal, verify_internal, sign_mu, verify_mu
RandomMode controls nonce/randomness behavior in ML-DSA signing:
  • RandomMode::Deterministic: deterministic signing
  • RandomMode::Hedged: randomized (RNG-backed) signing
  • RandomMode::Fixed(bytes): fixed randomness stream (acvp-internal only)
Notes:
  • ctx is optional context data and must be at most 255 bytes.
  • API variants are available in ml_dsa_44, ml_dsa_65, and ml_dsa_87.
Mode examples
Pure mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[9u8;32])).unwrap();let msg = b"pure mode";let sig = kp.sign(msg,Some(b"app:v1"),RandomMode::Deterministic).unwrap();assert!(kp.verify(msg,&sig,Some(b"app:v1")));
Pre-hash mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::prehash::PH;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[10u8;32])).unwrap();let msg = b"prehash mode";let sig = kp
.prehash_sign(msg,None,RandomMode::Hedged,PH::SHA256).unwrap();assert!(kp.prehash_verify(msg,&sig,None,PH::SHA256));
Internal mode (acvp-internal) is intended for ACVP/internal vectors only.
Error handling (recommended)
Key generation and key deserialization now return Result to avoid panics on malformed input.
use crystals_dilithium::dilithium2::PublicKey;fnparse_public_key(bytes:&[u8]) -> Result<PublicKey, crystals_dilithium::Error>{PublicKey::from_bytes(bytes)}
The same applies to:
  • Keypair::generate(...)
  • Keypair::from_bytes(...)
  • SecretKey::from_bytes(...)
  • PublicKey::from_bytes(...)
Testing
cargo test
ACVP internal test vectors are feature-gated:
cargo test --test acvp_internal --features acvp-internal
Benchmarks
Criterion benchmarks:
cargo bench
Docs
cargo doc --open
License
GPL-3.0-only. See LICENSE.
About
Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm
Resources
Readme
GPL-3.0 license
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GitHub - Quantum-Blockchains/dilithium: Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm · GitHub
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crystals-dilithium
Pure Rust implementation of:
  • CRYSTALS-Dilithium (dilithium2, dilithium3, dilithium5)
  • ML-DSA (ml_dsa_44, ml_dsa_65, ml_dsa_87)
The codebase is based on the reference implementation and includes test coverage against internal vectors and ACVP-style datasets.
Security note
This project has not undergone a formal third-party security audit. Use in production should include your own security review.
Build
cargo build --release
Quick start (Dilithium)
use crystals_dilithium::dilithium2::Keypair;let seed = [42u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let signature = keypair.sign(msg);let is_verified = keypair.verify(msg,&signature);assert!(is_verified);
Quick start (ML-DSA)
use crystals_dilithium::ml_dsa_44::Keypair;use crystals_dilithium::RandomMode;let seed = [7u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let sig = keypair.sign(msg,None,RandomMode::Deterministic).unwrap();assert!(keypair.verify(msg,&sig,None));
ML-DSA Modes
ML-DSA APIs support three signing/verification flows:
  1. Pure mode
  • Sign: sign(msg, ctx, rand)
  • Verify: verify(msg, sig, ctx)
  1. Pre-hash mode
  • Sign: prehash_sign(msg, ctx, rand, ph)
  • Verify: prehash_verify(msg, sig, ctx, ph)
  • ph is one of the supported pre-hash algorithms from prehash::PH.
  1. Internal mode (ACVP/internal testing only)
  • Requires feature: acvp-internal
  • Sign/verify pre-built inputs: sign_internal, verify_internal, sign_mu, verify_mu
RandomMode controls nonce/randomness behavior in ML-DSA signing:
  • RandomMode::Deterministic: deterministic signing
  • RandomMode::Hedged: randomized (RNG-backed) signing
  • RandomMode::Fixed(bytes): fixed randomness stream (acvp-internal only)
Notes:
  • ctx is optional context data and must be at most 255 bytes.
  • API variants are available in ml_dsa_44, ml_dsa_65, and ml_dsa_87.
Mode examples
Pure mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[9u8;32])).unwrap();let msg = b"pure mode";let sig = kp.sign(msg,Some(b"app:v1"),RandomMode::Deterministic).unwrap();assert!(kp.verify(msg,&sig,Some(b"app:v1")));
Pre-hash mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::prehash::PH;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[10u8;32])).unwrap();let msg = b"prehash mode";let sig = kp
.prehash_sign(msg,None,RandomMode::Hedged,PH::SHA256).unwrap();assert!(kp.prehash_verify(msg,&sig,None,PH::SHA256));
Internal mode (acvp-internal) is intended for ACVP/internal vectors only.
Error handling (recommended)
Key generation and key deserialization now return Result to avoid panics on malformed input.
use crystals_dilithium::dilithium2::PublicKey;fnparse_public_key(bytes:&[u8]) -> Result<PublicKey, crystals_dilithium::Error>{PublicKey::from_bytes(bytes)}
The same applies to:
  • Keypair::generate(...)
  • Keypair::from_bytes(...)
  • SecretKey::from_bytes(...)
  • PublicKey::from_bytes(...)
Testing
cargo test
ACVP internal test vectors are feature-gated:
cargo test --test acvp_internal --features acvp-internal
Benchmarks
Criterion benchmarks:
cargo bench
Docs
cargo doc --open
License
GPL-3.0-only. See LICENSE.
About
Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm
Resources
Readme
GPL-3.0 license
Activity
Custom properties
Stars
29 stars
Watchers
0 watching
Forks
9 forks
Report repository
Releases
Packages
Used by
Contributors
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, 'i');
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GitHub - Quantum-Blockchains/dilithium: Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm · GitHub
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crystals-dilithium
Pure Rust implementation of:
  • CRYSTALS-Dilithium (dilithium2, dilithium3, dilithium5)
  • ML-DSA (ml_dsa_44, ml_dsa_65, ml_dsa_87)
The codebase is based on the reference implementation and includes test coverage against internal vectors and ACVP-style datasets.
Security note
This project has not undergone a formal third-party security audit. Use in production should include your own security review.
Build
cargo build --release
Quick start (Dilithium)
use crystals_dilithium::dilithium2::Keypair;let seed = [42u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let signature = keypair.sign(msg);let is_verified = keypair.verify(msg,&signature);assert!(is_verified);
Quick start (ML-DSA)
use crystals_dilithium::ml_dsa_44::Keypair;use crystals_dilithium::RandomMode;let seed = [7u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let sig = keypair.sign(msg,None,RandomMode::Deterministic).unwrap();assert!(keypair.verify(msg,&sig,None));
ML-DSA Modes
ML-DSA APIs support three signing/verification flows:
  1. Pure mode
  • Sign: sign(msg, ctx, rand)
  • Verify: verify(msg, sig, ctx)
  1. Pre-hash mode
  • Sign: prehash_sign(msg, ctx, rand, ph)
  • Verify: prehash_verify(msg, sig, ctx, ph)
  • ph is one of the supported pre-hash algorithms from prehash::PH.
  1. Internal mode (ACVP/internal testing only)
  • Requires feature: acvp-internal
  • Sign/verify pre-built inputs: sign_internal, verify_internal, sign_mu, verify_mu
RandomMode controls nonce/randomness behavior in ML-DSA signing:
  • RandomMode::Deterministic: deterministic signing
  • RandomMode::Hedged: randomized (RNG-backed) signing
  • RandomMode::Fixed(bytes): fixed randomness stream (acvp-internal only)
Notes:
  • ctx is optional context data and must be at most 255 bytes.
  • API variants are available in ml_dsa_44, ml_dsa_65, and ml_dsa_87.
Mode examples
Pure mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[9u8;32])).unwrap();let msg = b"pure mode";let sig = kp.sign(msg,Some(b"app:v1"),RandomMode::Deterministic).unwrap();assert!(kp.verify(msg,&sig,Some(b"app:v1")));
Pre-hash mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::prehash::PH;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[10u8;32])).unwrap();let msg = b"prehash mode";let sig = kp
.prehash_sign(msg,None,RandomMode::Hedged,PH::SHA256).unwrap();assert!(kp.prehash_verify(msg,&sig,None,PH::SHA256));
Internal mode (acvp-internal) is intended for ACVP/internal vectors only.
Error handling (recommended)
Key generation and key deserialization now return Result to avoid panics on malformed input.
use crystals_dilithium::dilithium2::PublicKey;fnparse_public_key(bytes:&[u8]) -> Result<PublicKey, crystals_dilithium::Error>{PublicKey::from_bytes(bytes)}
The same applies to:
  • Keypair::generate(...)
  • Keypair::from_bytes(...)
  • SecretKey::from_bytes(...)
  • PublicKey::from_bytes(...)
Testing
cargo test
ACVP internal test vectors are feature-gated:
cargo test --test acvp_internal --features acvp-internal
Benchmarks
Criterion benchmarks:
cargo bench
Docs
cargo doc --open
License
GPL-3.0-only. See LICENSE.
About
Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm
Resources
Readme
GPL-3.0 license
Activity
Custom properties
Stars
29 stars
Watchers
0 watching
Forks
9 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

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[data-theme="light"], [data-theme="light"],
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})();
GitHub - Quantum-Blockchains/dilithium: Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm · GitHub
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crystals-dilithium
Pure Rust implementation of:
  • CRYSTALS-Dilithium (dilithium2, dilithium3, dilithium5)
  • ML-DSA (ml_dsa_44, ml_dsa_65, ml_dsa_87)
The codebase is based on the reference implementation and includes test coverage against internal vectors and ACVP-style datasets.
Security note
This project has not undergone a formal third-party security audit. Use in production should include your own security review.
Build
cargo build --release
Quick start (Dilithium)
use crystals_dilithium::dilithium2::Keypair;let seed = [42u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let signature = keypair.sign(msg);let is_verified = keypair.verify(msg,&signature);assert!(is_verified);
Quick start (ML-DSA)
use crystals_dilithium::ml_dsa_44::Keypair;use crystals_dilithium::RandomMode;let seed = [7u8;32];let msg = b"hello world";let keypair = Keypair::generate(Some(&seed)).unwrap();let sig = keypair.sign(msg,None,RandomMode::Deterministic).unwrap();assert!(keypair.verify(msg,&sig,None));
ML-DSA Modes
ML-DSA APIs support three signing/verification flows:
  1. Pure mode
  • Sign: sign(msg, ctx, rand)
  • Verify: verify(msg, sig, ctx)
  1. Pre-hash mode
  • Sign: prehash_sign(msg, ctx, rand, ph)
  • Verify: prehash_verify(msg, sig, ctx, ph)
  • ph is one of the supported pre-hash algorithms from prehash::PH.
  1. Internal mode (ACVP/internal testing only)
  • Requires feature: acvp-internal
  • Sign/verify pre-built inputs: sign_internal, verify_internal, sign_mu, verify_mu
RandomMode controls nonce/randomness behavior in ML-DSA signing:
  • RandomMode::Deterministic: deterministic signing
  • RandomMode::Hedged: randomized (RNG-backed) signing
  • RandomMode::Fixed(bytes): fixed randomness stream (acvp-internal only)
Notes:
  • ctx is optional context data and must be at most 255 bytes.
  • API variants are available in ml_dsa_44, ml_dsa_65, and ml_dsa_87.
Mode examples
Pure mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[9u8;32])).unwrap();let msg = b"pure mode";let sig = kp.sign(msg,Some(b"app:v1"),RandomMode::Deterministic).unwrap();assert!(kp.verify(msg,&sig,Some(b"app:v1")));
Pre-hash mode:
use crystals_dilithium::ml_dsa_65::Keypair;use crystals_dilithium::prehash::PH;use crystals_dilithium::RandomMode;let kp = Keypair::generate(Some(&[10u8;32])).unwrap();let msg = b"prehash mode";let sig = kp
.prehash_sign(msg,None,RandomMode::Hedged,PH::SHA256).unwrap();assert!(kp.prehash_verify(msg,&sig,None,PH::SHA256));
Internal mode (acvp-internal) is intended for ACVP/internal vectors only.
Error handling (recommended)
Key generation and key deserialization now return Result to avoid panics on malformed input.
use crystals_dilithium::dilithium2::PublicKey;fnparse_public_key(bytes:&[u8]) -> Result<PublicKey, crystals_dilithium::Error>{PublicKey::from_bytes(bytes)}
The same applies to:
  • Keypair::generate(...)
  • Keypair::from_bytes(...)
  • SecretKey::from_bytes(...)
  • PublicKey::from_bytes(...)
Testing
cargo test
ACVP internal test vectors are feature-gated:
cargo test --test acvp_internal --features acvp-internal
Benchmarks
Criterion benchmarks:
cargo bench
Docs
cargo doc --open
License
GPL-3.0-only. See LICENSE.
About
Pure Rust implementation of of the post-quantum CRYSTALS-Dilithium algorithm
Resources
Readme
GPL-3.0 license
Activity
Custom properties
Stars
29 stars
Watchers
0 watching
Forks
9 forks
Report repository
Releases
Packages
Used by
Contributors
Languages