Crate features / ed25519-dalek
Feature flags · ed25519-dalek 3.0.0 · from crates.io 2026-10-24
ed25519-dalek features: what each one does, and the line to copy
Short answered25519-dalek 3.0.0 has 11 features. By default it turns on fast, zeroize; add default-features = false to start from nothing. It needs Rust 1.85 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
alloc | curve25519-dalek/alloc, ed25519/alloc, signature/alloc, serde?/alloc, zeroize?/alloc | |
batch | alloc, dep:keccak, rand_core, strobe-rs | |
digest | signature/digest | |
fast | yes | curve25519-dalek/precomputed-tables |
hazmat | nothing else (a switch the code checks) | |
legacy_compatibility | curve25519-dalek/legacy_compatibility | |
pem | alloc, ed25519/pem, pkcs8 | |
pkcs8 | ed25519/pkcs8 | |
rand_core | dep:rand_core, curve25519-dalek/rand_core, signature/rand_core | |
serde | dep:serde, ed25519/serde | |
zeroize | yes | dep:zeroize, curve25519-dalek/zeroize |
dep:x turns on the optional dependency x; x/y turns on feature y of dependency x (with ?, only if x is already on).
MSRV history
The minimum Rust version ed25519-dalek declares (rust-version), and the release that changed it:
- 2.0.0-pre.0 (2023-02-04): Rust 1.60
- 2.2.0 (2025-07-09): Rust 1.81
- 3.0.0-pre.0 (2025-07-09): Rust 1.85
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p ed25519-dalek --precise <version>, or use resolver 3, which picks compatible versions for you.
More on ed25519-dalek
Real downloads, dependents and alternatives: ed25519-dalek crate data (780.8K real downloads a day, 3,403 dependents).
Security record: ed25519-dalek advisories.
docs.rs feature list · crates.io · license BSD-3-Clause · edition 2024
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