From 945e48a4396d7d267769426ff75086474cde39aa Mon Sep 17 00:00:00 2001
From: Jack Grigg <jack@z.cash>
Date: Wed, 21 Nov 2018 15:47:09 +0000
Subject: [PATCH 1/5] cargo update

---
 Cargo.lock | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index a7c017e1c..d8d1dcc69 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -10,7 +10,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "byteorder"
-version = "1.2.6"
+version = "1.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -20,7 +20,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cfg-if"
-version = "0.1.5"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -29,7 +29,7 @@ version = "2.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "ascii 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "byteorder 1.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -61,7 +61,7 @@ dependencies = [
  "error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jni-sys 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "walkdir 2.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -79,15 +79,15 @@ name = "log"
 version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "log"
-version = "0.4.5"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -102,7 +102,7 @@ dependencies = [
 
 [[package]]
 name = "same-file"
-version = "1.0.3"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -110,10 +110,10 @@ dependencies = [
 
 [[package]]
 name = "walkdir"
-version = "2.2.5"
+version = "2.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "same-file 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "same-file 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -156,9 +156,9 @@ dependencies = [
 [metadata]
 "checksum ascii 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3ae7d751998c189c1d4468cf0a39bb2eae052a9c58d50ebb3b9591ee3813ad50"
 "checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
-"checksum byteorder 1.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "90492c5858dd7d2e78691cfb89f90d273a2800fc11d98f60786e5d87e2f83781"
+"checksum byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "94f88df23a25417badc922ab0f5716cc1330e87f71ddd9203b3a3ccd9cedf75d"
 "checksum cesu8 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6d43a04d8753f35258c91f8ec639f792891f748a1edbd759cf1dcea3382ad83c"
-"checksum cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0c4e7bb64a8ebb0d856483e1e682ea3422f883c5f5615a90d51a2c82fe87fdd3"
+"checksum cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "082bb9b28e00d3c9d39cc03e64ce4cea0f1bb9b3fde493f0cbc008472d22bdf4"
 "checksum combine 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1645a65a99c7c8d345761f4b75a6ffe5be3b3b27a93ee731fccc5050ba6be97c"
 "checksum error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ff511d5dc435d703f4971bc399647c9bc38e20cb41452e3b9feb4765419ed3f3"
 "checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
@@ -167,10 +167,10 @@ dependencies = [
 "checksum jni-sys 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8eaf4bc02d17cbdd7ff4c7438cafcdf7fb9a4613313ad11b4f8fefe7d3fa0130"
 "checksum libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)" = "76e3a3ef172f1a0b9a9ff0dd1491ae5e6c948b94479a3021819ba7d860c8645d"
 "checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
-"checksum log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d4fcce5fa49cc693c312001daf1d13411c4a5283796bac1084299ea3e567113f"
+"checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
 "checksum rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8356f47b32624fef5b3301c1be97e5944ecdd595409cc5da11d05f211db6cfbd"
-"checksum same-file 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "10f7794e2fda7f594866840e95f5c5962e886e228e68b6505885811a94dd728c"
-"checksum walkdir 2.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "af464bc7be7b785c7ac72e266a6b67c4c9070155606f51655a650a6686204e35"
+"checksum same-file 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8f20c4be53a8a1ff4c1f1b2bd14570d2f634628709752f0702ecdd2b3f9a5267"
+"checksum walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "9d9d7ed3431229a144296213105a390676cc49c9b6a72bd19f3176c98e129fa1"
 "checksum winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "92c1eb33641e276cfa214a0522acad57be5c56b10cb348b3c5117db75f3ac4b0"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 "checksum winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "afc5508759c5bf4285e61feb862b6083c8480aec864fa17a81fdec6f69b461ab"

From 904099d761c4b4533627c8f2adcf441c0ad17053 Mon Sep 17 00:00:00 2001
From: Jack Grigg <jack@z.cash>
Date: Wed, 21 Nov 2018 15:52:28 +0000
Subject: [PATCH 2/5] jni 0.10

---
 Cargo.lock | 68 +++++++++++++++++++++++++++++++++++++++---------------
 Cargo.toml |  2 +-
 2 files changed, 51 insertions(+), 19 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index d8d1dcc69..57997c66d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,6 +1,6 @@
 [[package]]
 name = "ascii"
-version = "0.7.1"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -25,16 +25,24 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "combine"
-version = "2.5.2"
+version = "3.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "ascii 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ascii 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "either"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "error-chain"
-version = "0.11.0"
+version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -53,14 +61,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "jni"
-version = "0.9.3"
+version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cesu8 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "combine 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "combine 3.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "jni-sys 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -76,18 +84,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "log"
-version = "0.3.9"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
-name = "log"
-version = "0.4.6"
+name = "memchr"
+version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -108,6 +118,24 @@ dependencies = [
  "winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "unreachable"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "version_check"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "void"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "walkdir"
 version = "2.2.7"
@@ -149,27 +177,31 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 name = "zcash-wallet-sdk-poc"
 version = "0.0.1"
 dependencies = [
- "jni 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jni 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [metadata]
-"checksum ascii 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3ae7d751998c189c1d4468cf0a39bb2eae052a9c58d50ebb3b9591ee3813ad50"
+"checksum ascii 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a5fc969a8ce2c9c0c4b0429bb8431544f6658283c8326ba5ff8c762b75369335"
 "checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
 "checksum byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "94f88df23a25417badc922ab0f5716cc1330e87f71ddd9203b3a3ccd9cedf75d"
 "checksum cesu8 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6d43a04d8753f35258c91f8ec639f792891f748a1edbd759cf1dcea3382ad83c"
 "checksum cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "082bb9b28e00d3c9d39cc03e64ce4cea0f1bb9b3fde493f0cbc008472d22bdf4"
-"checksum combine 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1645a65a99c7c8d345761f4b75a6ffe5be3b3b27a93ee731fccc5050ba6be97c"
-"checksum error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ff511d5dc435d703f4971bc399647c9bc38e20cb41452e3b9feb4765419ed3f3"
+"checksum combine 3.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "db733c5d0f4f52e78d4417959cadf0eecc7476e7f9ece05677912571a4af34e2"
+"checksum either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3be565ca5c557d7f59e7cfcf1844f9e3033650c929c6566f511e8005f205c1d0"
+"checksum error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "07e791d3be96241c77c43846b665ef1384606da2cd2a48730abe606a12906e02"
 "checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
-"checksum jni 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ef6a7c128e004695664548814f96ea78b458d94e52eb88c42a3b1d4e9a14ac1e"
+"checksum jni 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1ecfa3b81afc64d9a6539c4eece96ac9a93c551c713a313800dade8e33d7b5c1"
 "checksum jni-sys 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8eaf4bc02d17cbdd7ff4c7438cafcdf7fb9a4613313ad11b4f8fefe7d3fa0130"
 "checksum libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)" = "76e3a3ef172f1a0b9a9ff0dd1491ae5e6c948b94479a3021819ba7d860c8645d"
-"checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
 "checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
+"checksum memchr 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0a3eb002f0535929f1199681417029ebea04aadc0c7a4224b46be99c7f5d6a16"
 "checksum rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8356f47b32624fef5b3301c1be97e5944ecdd595409cc5da11d05f211db6cfbd"
 "checksum same-file 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8f20c4be53a8a1ff4c1f1b2bd14570d2f634628709752f0702ecdd2b3f9a5267"
+"checksum unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
+"checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
+"checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
 "checksum walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "9d9d7ed3431229a144296213105a390676cc49c9b6a72bd19f3176c98e129fa1"
 "checksum winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "92c1eb33641e276cfa214a0522acad57be5c56b10cb348b3c5117db75f3ac4b0"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
diff --git a/Cargo.toml b/Cargo.toml
index e26b4c6e4..cf84282b4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ publish = false
 rand = "0.4"
 
 [target.'cfg(target_os="android")'.dependencies]
-jni = { version = "0.9", default-features = false }
+jni = { version = "0.10", default-features = false }
 
 [lib]
 name = "zcashwalletsdk"

From c479e6766725c8e68a2a94997c5964083807d4e5 Mon Sep 17 00:00:00 2001
From: Jack Grigg <jack@z.cash>
Date: Wed, 21 Nov 2018 16:24:40 +0000
Subject: [PATCH 3/5] Add NDK binaries to path so the cc crate can find them

---
 build-rust.bat | 8 ++++++++
 build-rust.sh  | 6 +++---
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/build-rust.bat b/build-rust.bat
index 1b5be7f3a..8a46b36cf 100644
--- a/build-rust.bat
+++ b/build-rust.bat
@@ -3,6 +3,9 @@
 @rem Set local scope for the variables with windows NT shell
 if "%OS%"=="Windows_NT" setlocal
 
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+
 @rem check for cargo installation
 cargo --version >NUL 2>&1
 if %ERRORLEVEL% equ 0 goto cargoFound
@@ -25,6 +28,11 @@ call build-ndk-standalone.bat
 if %ERRORLEVEL% neq 0 exit /b 1
 
 
+@rem add NDK binaries to path so the cc crate can find them
+set PATH=%DIRNAME%\out\ndk\standalone\arm\bin;%PATH%
+set PATH=%DIRNAME%\out\ndk\standalone\arm64\bin;%PATH%
+set PATH=%DIRNAME%\out\ndk\standalone\x86\bin;%PATH%
+
 echo Building...
 echo    building aarch64...
 cargo build --target aarch64-linux-android --release
diff --git a/build-rust.sh b/build-rust.sh
index b81e4443f..ba19a75c1 100755
--- a/build-rust.sh
+++ b/build-rust.sh
@@ -26,12 +26,12 @@ echo "Android targets found!"
 
 echo "Building..."
 echo "   building aarch64..."
-cargo build --target aarch64-linux-android --release || exit 10
+PATH="$PATH:$(pwd)/out/ndk/standalone/arm64/bin" cargo build --target aarch64-linux-android --release || exit 10
 
 echo "   building i686..."
-cargo build --target i686-linux-android --release || exit 20
+PATH="$PATH:$(pwd)/out/ndk/standalone/x86/bin" cargo build --target i686-linux-android --release || exit 20
 
 echo "   building armv7..."
-cargo build --target armv7-linux-androideabi --release || exit 30
+PATH="$PATH:$(pwd)/out/ndk/standalone/arm/bin" cargo build --target armv7-linux-androideabi --release || exit 30
 
 echo "Done."

From 6ab9c6610cdc232c76661f9a406a6f8523836cee Mon Sep 17 00:00:00 2001
From: Jack Grigg <jack@z.cash>
Date: Wed, 21 Nov 2018 16:40:18 +0000
Subject: [PATCH 4/5] JniConverter.getAddress(seed)

---
 Cargo.lock                                    | 444 ++++++++++++++++++
 Cargo.toml                                    |   8 +
 .../cash/z/wallet/sdk/jni/JniConverter.kt     |   4 +-
 src/main/rust/lib.rs                          |  56 ++-
 4 files changed, 484 insertions(+), 28 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 57997c66d..75fbca3b7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,18 +1,130 @@
+[[package]]
+name = "aes"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
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+ "crossbeam 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
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+
 [[package]]
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+[[package]]
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+dependencies = [
+ "arrayvec 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
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+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "generic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
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+version = "1.0.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "cesu8"
 version = "1.1.0"
@@ -23,6 +135,14 @@ name = "cfg-if"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "chacha20-poly1305-aead"
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+dependencies = [
+ "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "combine"
 version = "3.6.3"
@@ -35,6 +155,24 @@ dependencies = [
  "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "constant_time_eq"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
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+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
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+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "generic-array 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "either"
 version = "1.5.0"
@@ -45,6 +183,38 @@ name = "error-chain"
 version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "failure"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "backtrace 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure_derive 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "synstructure 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "aes 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "byteorder 1.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-bigint 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "fuchsia-zircon"
 version = "0.3.3"
@@ -59,6 +229,33 @@ name = "fuchsia-zircon-sys"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "futures"
+version = "0.1.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
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+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "futures 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
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 version = "0.10.2"
@@ -77,6 +274,11 @@ name = "jni-sys"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "lazy_static"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "libc"
 version = "0.2.43"
@@ -100,6 +302,93 @@ dependencies = [
  "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
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+
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+ "num-integer 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
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+
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+dependencies = [
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+
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+
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+dependencies = [
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+
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+dependencies = [
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+
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+dependencies = [
+ "protobuf 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
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+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "protobuf 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "protobuf-codegen 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
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@@ -110,6 +399,11 @@ dependencies = [
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
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+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
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@@ -118,6 +412,58 @@ dependencies = [
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 ]
 
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+ "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
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+
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+"checksum num-integer 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "e83d528d2677f0518c570baf2b7abdcf0cd2d248860b68507bdcb3e91d4c0cea"
+"checksum num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "0b3a5d7cc97d6d30d8b9bc8fa19bf45349ffe46241e8816f50f62f6d6aaabee1"
+"checksum num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c51a3322e4bca9d212ad9a158a02abc6934d005490c054a2778df73a70aa0a30"
+"checksum opaque-debug 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d620c9c26834b34f039489ac0dfdb12c7ac15ccaf818350a64c9b5334a452ad7"
+"checksum pairing 0.14.2 (git+https://github.com/str4d/librustzcash.git?rev=63ec78bb857a258a97d25a5a6e747389996e566a)" = "<none>"
+"checksum proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)" = "77619697826f31a02ae974457af0b29b723e5619e113e9397b8b82c6bd253f09"
+"checksum protobuf 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "cbd08d128db199b1c6bb662e343d7d1a8f6d0060b411675766d88e5146a4bb38"
+"checksum protobuf-codegen 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c5730e51a78ee86d308caaafeb4b01a0bd79fb92b9ab5a8fd4b94c56786e0862"
+"checksum protobuf-codegen-pure 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9b0e4940ec64bbd5a7379b315b97452ca9182f3db697ff630f2bb19b3f9fa379"
+"checksum quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "53fa22a1994bd0f9372d7a816207d8a2677ad0325b073f5c5332760f0fb62b5c"
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+"checksum rustc-demangle 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "bcfe5b13211b4d78e5c2cadfebd7769197d95c639c35a50057eb4c05de811395"
 "checksum same-file 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8f20c4be53a8a1ff4c1f1b2bd14570d2f634628709752f0702ecdd2b3f9a5267"
+"checksum sapling-crypto 0.0.1 (git+https://github.com/str4d/librustzcash.git?rev=63ec78bb857a258a97d25a5a6e747389996e566a)" = "<none>"
+"checksum stream-cipher 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "30dc6118470d69ce0fdcf7e6f95e95853f7f4f72f80d835d4519577c323814ab"
+"checksum syn 0.15.21 (registry+https://github.com/rust-lang/crates.io-index)" = "816b7af21405b011a23554ea2dc3f6576dc86ca557047c34098c1d741f10f823"
+"checksum synstructure 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "73687139bf99285483c96ac0add482c3776528beac1d97d444f6e91f203a2015"
+"checksum typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "612d636f949607bdf9b123b4a6f6d966dedf3ff669f7f045890d3a4a73948169"
+"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 "checksum unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
 "checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
@@ -207,3 +648,6 @@ dependencies = [
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 "checksum winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "afc5508759c5bf4285e61feb862b6083c8480aec864fa17a81fdec6f69b461ab"
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+"checksum zcash_client_backend 0.0.0 (git+https://github.com/str4d/librustzcash.git?rev=63ec78bb857a258a97d25a5a6e747389996e566a)" = "<none>"
+"checksum zcash_primitives 0.0.0 (git+https://github.com/str4d/librustzcash.git?rev=63ec78bb857a258a97d25a5a6e747389996e566a)" = "<none>"
+"checksum zip32 0.0.0 (git+https://github.com/str4d/librustzcash.git?rev=63ec78bb857a258a97d25a5a6e747389996e566a)" = "<none>"
diff --git a/Cargo.toml b/Cargo.toml
index cf84282b4..580500968 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,14 @@ publish = false
 [dependencies]
 rand = "0.4"
 
+[dependencies.zcash_client_backend]
+git = "https://github.com/str4d/librustzcash.git"
+rev = "63ec78bb857a258a97d25a5a6e747389996e566a"
+
+[dependencies.zip32]
+git = "https://github.com/str4d/librustzcash.git"
+rev = "63ec78bb857a258a97d25a5a6e747389996e566a"
+
 [target.'cfg(target_os="android")'.dependencies]
 jni = { version = "0.10", default-features = false }
 
diff --git a/src/main/java/cash/z/wallet/sdk/jni/JniConverter.kt b/src/main/java/cash/z/wallet/sdk/jni/JniConverter.kt
index df460dff0..7f0ef9d87 100644
--- a/src/main/java/cash/z/wallet/sdk/jni/JniConverter.kt
+++ b/src/main/java/cash/z/wallet/sdk/jni/JniConverter.kt
@@ -2,9 +2,7 @@ package cash.z.wallet.sdk.jni
 
 class JniConverter {
 
-    external fun getMagicInt(value: String): Int
-
-    external fun sendComplexData(walletData: ByteArray): Int
+    external fun getAddress(seed: ByteArray): String
 
     companion object {
         init {
diff --git a/src/main/rust/lib.rs b/src/main/rust/lib.rs
index a1272bccb..23ba0c63e 100644
--- a/src/main/rust/lib.rs
+++ b/src/main/rust/lib.rs
@@ -1,10 +1,23 @@
-use std::os::raw::{c_char, c_int};
+extern crate zcash_client_backend;
+extern crate zip32;
 
-/// For now, this just returns a magic number
-#[no_mangle]
-pub extern "C" fn test_response(_input: *const c_char) -> c_int {
-    let magic_number = 42;
-    magic_number
+use zcash_client_backend::{
+    address::encode_payment_address, constants::HRP_SAPLING_EXTENDED_SPENDING_KEY_TEST,
+};
+use zip32::{ChildIndex, ExtendedSpendingKey};
+
+fn address_from_seed(seed: &[u8]) -> String {
+    let master = ExtendedSpendingKey::master(seed);
+    let extsk = ExtendedSpendingKey::from_path(
+        &master,
+        &[
+            ChildIndex::Hardened(32),
+            ChildIndex::Hardened(1),
+            ChildIndex::Hardened(0),
+        ],
+    );
+    let addr = extsk.default_address().unwrap().1;
+    encode_payment_address(HRP_SAPLING_EXTENDED_SPENDING_KEY_TEST, &addr)
 }
 
 /// JNI interface
@@ -13,30 +26,23 @@ pub extern "C" fn test_response(_input: *const c_char) -> c_int {
 pub mod android {
     extern crate jni;
 
-    use self::jni::objects::{JClass, JString};
-    use self::jni::sys::*;
+    use self::jni::objects::JClass;
+    use self::jni::sys::{jbyteArray, jstring};
     use self::jni::JNIEnv;
-    use super::*;
 
-    #[no_mangle]
-    pub unsafe extern "C" fn Java_cash_z_wallet_sdk_jni_JniConverter_getMagicInt(
-        env: JNIEnv,
-        _: JClass,
-        test_input: JString,
-    ) -> jint {
-        let jvm_text = env
-            .get_string(test_input)
-            .expect("unable to find text for test input");
-        test_response(jvm_text.as_ptr())
-    }
+    use super::address_from_seed;
 
     #[no_mangle]
-    pub unsafe extern "C" fn Java_cash_z_wallet_sdk_jni_JniConverter_sendComplexData(
+    pub unsafe extern "C" fn Java_cash_z_wallet_sdk_jni_JniConverter_getAddress(
         env: JNIEnv,
         _: JClass,
-        wallet_data: jbyteArray,
-    ) -> jint {
-        let bytes = env.convert_byte_array(wallet_data);
-        bytes.unwrap().len() as i32
+        seed: jbyteArray,
+    ) -> jstring {
+        let seed = env.convert_byte_array(seed).unwrap();
+
+        let addr = address_from_seed(&seed);
+
+        let output = env.new_string(addr).expect("Couldn't create Java string!");
+        output.into_inner()
     }
 }

From a522715406a76165dec92cce51c01c0b87ae2d9b Mon Sep 17 00:00:00 2001
From: Kevin Gorham <anothergmale@gmail.com>
Date: Wed, 21 Nov 2018 15:14:08 -0500
Subject: [PATCH 5/5] version bump.

doing these manually for now.
---
 build.gradle | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/build.gradle b/build.gradle
index 1a1dc26f7..c7c626006 100644
--- a/build.gradle
+++ b/build.gradle
@@ -27,7 +27,7 @@ apply plugin: 'com.github.ben-manes.versions'
 apply plugin: 'com.github.dcendents.android-maven'
 
 group = 'cash.z.android.wallet'
-version = '1.0.1'
+version = '1.1.1'
 
 repositories {
     google()
@@ -40,8 +40,8 @@ android {
     defaultConfig {
         minSdkVersion 16
         targetSdkVersion 28
-        versionCode = 1_00_01
-        versionName = "1.0.1"
+        versionCode = 1_01_01
+        versionName = "1.1.1"
         testInstrumentationRunner = "android.support.test.runner.AndroidJUnitRunner"
     }