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Add FROST threshold signing for Orchard spends #150

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Add FROST threshold signing for Orchard spends #150

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9700810
Add FROST integration tests and walkthrough documentation
zmanian Feb 8, 2026
5951e49
Add FROST-to-Zcash bridge tests for FVK construction and signature co…
zmanian Feb 8, 2026
ce89023
Document FROST test suite in walkthrough, including wallet bridge tests
zmanian Feb 9, 2026
e1e1cf8
Add FROST threshold signing implementation for Orchard spends
zmanian Feb 9, 2026
d1ffccd
Fix security, correctness, and robustness issues across FROST impleme…
zmanian Feb 9, 2026
4d60a93
Remove alpha_hex leak, reduce PCZT parses, add validation tests
zmanian Feb 9, 2026
f19887c
Fix remaining code review issues: stdin, async, UX, and refactoring
zmanian Feb 9, 2026
fd209cb
Zeroize signing share on drop, harden DKG input handling
zmanian Feb 9, 2026
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92 changes: 88 additions & 4 deletions Cargo.lock
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13 changes: 13 additions & 0 deletions Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,12 @@ uuid = "1"

# Zcash
orchard = { version = "0.12", default-features = false }

# FROST threshold signing
frost-core = { version = "0.6.0", features = ["serde"], optional = true }
frost-rerandomized = { version = "0.6.0", optional = true }
reddsa = { version = "0.5.1", features = ["frost"], optional = true }
zeroize = { version = "1", optional = true }
pczt = "0.5"
sapling = { package = "sapling-crypto", version = "0.6" }
transparent = { package = "zcash_transparent", version = "0.6", features = ["test-dependencies"] }
Expand Down Expand Up @@ -105,6 +111,13 @@ pczt-qr = ["dep:image", "dep:minicbor", "dep:nokhwa", "dep:qrcode", "dep:rqrr",
transparent-inputs = [
"zcash_client_sqlite/transparent-inputs",
]
frost = [
"dep:frost-core",
"dep:frost-rerandomized",
"dep:reddsa",
"dep:zeroize",
"orchard/unstable-frost",
]
tui = [
"dep:crossterm",
"dep:ratatui",
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3 changes: 3 additions & 0 deletions README.md
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Expand Up @@ -68,6 +68,9 @@ The code developed in this demo resulted in [this](https://github.com/zcash/zcas
For a step-by-step guide for how to get started using these tools, see [this
walkthrough](doc/walkthrough.md).

For a guide to setting up a FROST threshold-signing wallet (multi-party
Orchard spending), see the [FROST walkthrough](doc/frost-walkthrough.md).

## License

All code in this workspace is licensed under either of
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