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[#1924] Add Android shielded-voting JNI foundation, round lifecycle, and delegation prep + signing #7

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[#1924] Add Android shielded-voting JNI foundation, round lifecycle, and delegation prep + signing #7

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0009674
Add voting bundle setup wrappers
greg0x May 9, 2026
11156b8
Add voting hotkey and cache wrappers
greg0x May 9, 2026
dfc415d
Add governance PCZT signing wrappers
greg0x May 9, 2026
93cb7ef
Document voting dependency pin
greg0x May 10, 2026
4c72265
Tighten voting JNI review fixes
greg0x May 10, 2026
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3 changes: 2 additions & 1 deletion CHANGELOG.md
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Expand Up @@ -11,7 +11,8 @@ and this library adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
for snapshot-height consumers.

### Internal
- Added the Rust `zcash_voting` dependency foundation for future shielded voting backend work.
- Added internal `VotingRustBackend` / `TypesafeVotingBackend` plumbing for future shielded voting backend work.
- Pinned `orchard` to `=0.13.1` with `unstable-voting-circuits` to match `zcash_voting` / `voting-circuits` requirements.

### Changed
- `Synchronizer.importAccountByUfvk` now calls `TypesafeBackend.rewindToChainState` after importing
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2 changes: 2 additions & 0 deletions backend-lib/Cargo.lock
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7 changes: 5 additions & 2 deletions backend-lib/Cargo.toml
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Expand Up @@ -54,8 +54,11 @@ anyhow = "1"
jni = { version = "0.21", default-features = false }
uuid = "1"
bitflags = "2"
blake2b_simd = "1"
serde = { version = "1", features = ["derive"] }
serde_json = "1"
# Explicit dependency for FFI-layer voting JSON encoding/decoding of binary fields.
hex = "0.4"

# lightwalletd
tonic = "0.14"
Expand Down Expand Up @@ -83,8 +86,8 @@ rust-analyzer = "0.0.1"
#
# `zcash_voting` provides client-side primitives for shielded voting. It depends
# on Orchard's unstable voting-circuits APIs, so the direct Orchard dependency is
# pinned to the same version and enables the same feature. Remove the exact pin
# once these circuit APIs are available through a stable Orchard feature.
# pinned to the same version and enables the same feature. Revisit the exact pin
# if the upstream voting crates relax their Orchard requirement.
# The Android JNI boundary for voting code is `src/main/rust/voting.rs`.
# Its share-nullifier entry point forwards to
# `zcash_voting::share_tracking::compute_share_nullifier`:
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