Lib.rs

Cargo Features

[dependencies]
sp-core = { version = "39.0.0", default-features = false, features = ["std", "serde", "full_crypto", "bls-experimental", "bandersnatch-experimental"] }

default = std

The std feature is set by default whenever sp-core is added without default-features = false somewhere in the dependency tree.

std default = full_crypto, itertools, parking_lot, rand, thiserror, tracing

Enables rand and std of bip39, std and thread-pool of futures, byteorder, rustc-hex, serde and std of primitive-types ^0.13.1, alloc and std of zeroize, std of scale-info and schnorrkel, std of blake2, bounded-collections, bs58, parity-scale-codec, and ed25519-zebra and global-context and std of secp256k1 ^0.28.0

secp256k1 crate, better performance, intended to be used on host side (std)

and std of hash-db, hash256-std-hasher, impl-serde, k256, libsecp256k1, log, and merlin

k256:

k256 crate, better portability, intended to be used in substrate-runtimes (no-std)

and std of optional ark-vrf

bandersnatch crypto

and std of serde, sp-crypto-hashing, sp-debug-derive, sp-externalities, sp-std, sp-storage, ss58-registry, substrate-bip39, optional sha2, and optional w3f-bls

sha2:

bls crypto

Affects crypto::Ss58Codec.from_string, crypto::Ss58Codec.from_string_with_version, crypto::Pair.generate, crypto::Pair.generate_with_phrase, hexdisplay::ascii_format, offchain::storage, offchain::testing, testing::TaskExecutor…

serde std = blake2, impl-serde

Serde support without relying on std features.

Enables serde, serde of bounded-collections, alloc of bs58, serde of k256, serde_no_std of primitive-types ^0.13.1, serde of scale-info, serde of sp-storage

Affects crypto::Ss58Codec.from_ss58check, crypto::Ss58Codec.from_ss58check_with_version, crypto::Ss58Codec.to_ss58check_with_version, crypto::Ss58Codec.to_ss58check, crypto::Derive.derive, crypto::default_ss58_version, crypto::unwrap_or_default_ss58_version, crypto::set_default_ss58_version, crypto::PublicError…

full_crypto std = blake2

This feature enables all crypto primitives for no_std builds like microcontrollers or Intel SGX. For the regular wasm runtime builds this should not be used.

Affects crypto::Pair.sign, proof_of_possession::ProofOfPossessionGenerator.generate_proof_of_possession, crypto::PublicError…

bls-experimental = sha2, w3f-bls

This feature adds BLS crypto primitives.
It should not be used in production since the implementation and interface may still be subject to significant changes.

Affects sp-core::bls, paired_crypto::ecdsa_bls377, paired_crypto::ecdsa_bls381…

bandersnatch-experimental = ark-vrf

This feature adds Bandersnatch crypto primitives.
It should not be used in production since the implementation and interface may still be subject to significant changes.

Affects sp-core::bandersnatch…

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

bs58 serde? std

futures std

impl-serde serde? std

itertools std

Enables itertools ^0.11

parking_lot std

rand std

Enables rand ^0.8.5

sp-externalities std

thiserror std

Enables thiserror ^1.0.64

tracing std

blake2 full_crypto? serde? std

secp256k1 std

Enables secp256k1 ^0.28.0

sha2 bls-experimental?

w3f-bls bls-experimental?

ark-vrf bandersnatch-experimental?