Feature: Initial no_std Support for Crypto

[sephynox]

Summary

• Adds no_std support for the crypto crate
• Adds no_std support for the utils crate

[Copilot]

Pull request overview

Adds initial no_std compatibility knobs to the keetanetwork-crypto and keetanetwork-utils crates by introducing std feature flags, switching to alloc types, and adjusting dependency feature sets to support no_std builds.

Changes:

• Add #![no_std] under cfg_attr + alloc usage across keetanetwork-crypto modules.
• Introduce std feature defaults for keetanetwork-utils and keetanetwork-crypto, and adjust dependencies to default-features = false where needed.
• Update lockfile to reflect dependency feature/version resolution changes.

Reviewed changes

Copilot reviewed 18 out of 19 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
keetanetwork-utils/src/lib.rs	Adds no_std cfg gating at crate level.
keetanetwork-utils/Cargo.toml	Adds std feature + changes defaults; modifies [lib] configuration.
keetanetwork-crypto/src/lib.rs	Adds no_std gating and extern crate alloc for alloc-backed types/macros.
keetanetwork-crypto/src/utils.rs	Switches String/Vec imports to alloc equivalents.
keetanetwork-crypto/src/operations/signature.rs	Uses alloc::vec::Vec for no_std.
keetanetwork-crypto/src/operations/encryption.rs	Uses alloc::vec::Vec for no_std.
keetanetwork-crypto/src/kdf.rs	Uses alloc::vec::Vec for no_std.
keetanetwork-crypto/src/hash.rs	Uses alloc::vec::Vec for no_std.
keetanetwork-crypto/src/error.rs	Switches error strings to alloc::string::String.
keetanetwork-crypto/src/algorithms/mod.rs	Uses alloc::vec::Vec and adjusts signature encoding import for no_std.
keetanetwork-crypto/src/algorithms/secp256r1.rs	Uses alloc::vec::Vec for no_std.
keetanetwork-crypto/src/algorithms/secp256k1.rs	Uses alloc::vec::Vec for no_std.
keetanetwork-crypto/src/algorithms/ed25519.rs	Uses alloc::vec::Vec for no_std.
keetanetwork-crypto/src/algorithms/ecies.rs	Uses alloc::vec::Vec for no_std.
keetanetwork-crypto/src/algorithms/aes_gcm.rs	Uses alloc::vec::Vec for no_std.
keetanetwork-crypto/src/algorithms/aes_ctr.rs	Uses alloc::vec::Vec for no_std.
keetanetwork-crypto/src/algorithms/aes_cbc.rs	Uses alloc::vec::Vec for no_std.
keetanetwork-crypto/Cargo.toml	Reworks dependency features for no_std and introduces std/alloc features.
Cargo.lock	Updates resolved dependencies per feature/version changes.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud