STR-728: Key Derivation Crate

[storopoli]

Description

Adds the Key Derivation Library Crate.

TODO

• Tests signing a transaction using a Bridge Operator's xpriv
• Zeroize/ZeroizeOnDrop
  • Operator keys
  • Sequencer key
• Sequencer keys
• Refactor bridge-client CLI to use the key derivation crate.
• Refactor sequencer binaries/libs to use the key derivation crate.
• Refactor datatool to use key-derivation crate.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature/Enhancement (non-breaking change which adds functionality or enhances an existing one)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactor
• New or updated tests
• Dependency Update

Notes to Reviewers

The key derivation crate moves the logic of key derivation away from the bridge and sequencer binaries into a separate standalone crate.
This will be equipped with proper tests and error types.

Checklist

• I have performed a self-review of my code.
• I have commented my code where necessary.
• I have updated the documentation if needed.
• My changes do not introduce new warnings.
• I have added tests that prove my changes are effective or that my feature works.
• New and existing tests pass with my changes.

Related Issues

STR-728

[codecov]

Codecov Report

Attention: Patch coverage is 56.28672% with 372 lines in your changes missing coverage. Please review.

Project coverage is 56.68%. Comparing base (8c6ed31) to head (900251c).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
bin/datatool/src/util.rs	0.00%	270 Missing ⚠️
bin/bridge-client/src/xpriv.rs	0.00%	35 Missing ⚠️
crates/key-derivation/src/operator.rs	89.23%	31 Missing ⚠️
crates/key-derivation/src/sequencer.rs	91.30%	10 Missing ⚠️
bin/strata-client/src/helpers.rs	0.00%	8 Missing ⚠️
bin/datatool/src/args.rs	0.00%	7 Missing ⚠️
bin/bridge-client/src/modes/operator/bootstrap.rs	0.00%	3 Missing ⚠️
crates/key-derivation/src/error.rs	0.00%	3 Missing ⚠️
crates/primitives/src/keys.rs	94.64%	3 Missing ⚠️
bin/datatool/src/main.rs	0.00%	2 Missing ⚠️

@@            Coverage Diff             @@
##             main     #520      +/-   ##
==========================================
+ Coverage   56.12%   56.68%   +0.55%     
==========================================
  Files         298      303       +5     
  Lines       30528    30999     +471     
==========================================
+ Hits        17135    17571     +436     
- Misses      13393    13428      +35     

Files with missing lines	Coverage Δ
bin/bridge-client/src/args.rs	0.00% <ø> (ø)
bin/bridge-client/src/main.rs	0.00% <ø> (ø)
bin/strata-client/src/main.rs	0.00% <ø> (ø)
crates/primitives/src/buf.rs	86.95% <100.00%> (+3.62%)	⬆️
crates/primitives/src/constants.rs	100.00% <100.00%> (ø)
bin/datatool/src/main.rs	0.00% <0.00%> (ø)
bin/bridge-client/src/modes/operator/bootstrap.rs	0.00% <0.00%> (ø)
crates/key-derivation/src/error.rs	0.00% <0.00%> (ø)
crates/primitives/src/keys.rs	94.64% <94.64%> (ø)
bin/datatool/src/args.rs	0.00% <0.00%> (ø)
... and 5 more

... and 4 files with indirect coverage changes

[delbonis]

good comments!

[AaronFeickert]

LGTM

new review needed