Merge pull request #1 from zcash/master

Pull master

Cargo.lock

@@ -1,3 +1,5 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
 [[package]]
 name = "aes"
 version = "0.2.0"
@@ -36,6 +38,11 @@ dependencies = [
  "nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "bech32"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "bellman"
 version = "0.1.0"
@@ -295,7 +302,6 @@ dependencies = [
  "sapling-crypto 0.0.1",
  "zcash_primitives 0.0.0",
  "zcash_proofs 0.0.0",
- "zip32 0.0.0",
 ]
 
 [[package]]
@@ -507,14 +513,27 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "zcash_client_backend"
+version = "0.0.0"
+dependencies = [
+ "bech32 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pairing 0.14.2",
+ "rand 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sapling-crypto 0.0.1",
+ "zcash_primitives 0.0.0",
+]
+
 [[package]]
 name = "zcash_primitives"
 version = "0.0.0"
 dependencies = [
+ "aes 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "blake2-rfc 0.2.18 (git+https://github.com/gtank/blake2-rfc?rev=7a5b5fc99ae483a0043db7547fb79a6fa44b88a9)",
  "byteorder 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "crypto_api_chachapoly 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "ff 0.4.0",
+ "fpe 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pairing 0.14.2",
@@ -536,29 +555,12 @@ dependencies = [
  "sapling-crypto 0.0.1",
 ]
 
-[[package]]
-name = "zcash_wallet"
-version = "0.0.0"
-
-[[package]]
-name = "zip32"
-version = "0.0.0"
-dependencies = [
- "aes 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "blake2-rfc 0.2.18 (git+https://github.com/gtank/blake2-rfc?rev=7a5b5fc99ae483a0043db7547fb79a6fa44b88a9)",
- "byteorder 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "ff 0.4.0",
- "fpe 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "pairing 0.14.2",
- "sapling-crypto 0.0.1",
- "zcash_primitives 0.0.0",
-]
-
 [metadata]
 "checksum aes 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e6fb1737cdc8da3db76e90ca817a194249a38fcb500c2e6ecec39b29448aa873"
 "checksum aes-soft 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "67cc03b0a090a05cb01e96998a01905d7ceedce1bc23b756c0bb7faa0682ccb1"
 "checksum aesni 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "6810b7fb9f2bb4f76f05ac1c170b8dde285b6308955dc3afd89710268c958d9e"
 "checksum arrayvec 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)" = "a1e964f9e24d588183fcb43503abda40d288c8657dfc27311516ce2f05675aef"
+"checksum bech32 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "58946044516aa9dc922182e0d6e9d124a31aafe6b421614654eb27cf90cec09c"
 "checksum bit-vec 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "02b4ff8b16e6076c3e14220b39fbc1fabb6737522281a388998046859400895f"
 "checksum bitflags 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b3c30d3802dfb7281680d6285f2ccdaa8c2d8fee41f93805dba5c4cf50dc23cf"
 "checksum blake2-rfc 0.2.18 (git+https://github.com/gtank/blake2-rfc?rev=7a5b5fc99ae483a0043db7547fb79a6fa44b88a9)" = "<none>"

Cargo.toml

@@ -6,10 +6,9 @@ members = [
     "librustzcash",
     "pairing",
     "sapling-crypto",
+    "zcash_client_backend",
     "zcash_primitives",
     "zcash_proofs",
-    "zcash_wallet",
-    "zip32",
 ]
 
 [profile.release]

librustzcash/Cargo.toml

@@ -24,7 +24,6 @@ rand = "0.4"
 sapling-crypto = { path = "../sapling-crypto" }
 zcash_primitives = { path = "../zcash_primitives" }
 zcash_proofs = { path = "../zcash_proofs" }
-zip32 = { path = "../zip32" }
 
 [dependencies.blake2-rfc]
 git = "https://github.com/gtank/blake2-rfc"

librustzcash/src/rustzcash.rs

@@ -8,7 +8,6 @@ extern crate rand;
 extern crate sapling_crypto;
 extern crate zcash_primitives;
 extern crate zcash_proofs;
-extern crate zip32;
 
 extern crate lazy_static;
 
@@ -58,7 +57,7 @@ use std::ffi::OsString;
 use std::os::windows::ffi::OsStringExt;
 
 use sapling_crypto::primitives::{ProofGenerationKey, ViewingKey};
-use zcash_primitives::{note_encryption::sapling_ka_agree, sapling::spend_sig, JUBJUB};
+use zcash_primitives::{note_encryption::sapling_ka_agree, sapling::spend_sig, zip32, JUBJUB};
 use zcash_proofs::{
     load_parameters,
     sapling::{CommitmentTreeWitness, SaplingProvingContext, SaplingVerificationContext},

zcash_client_backend/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "zcash_client_backend"
+version = "0.0.0"
+authors = [
+    "Jack Grigg <jack@z.cash>",
+]
+edition = "2018"
+
+[dependencies]
+bech32 = "0.6"
+pairing = { path = "../pairing" }
+sapling-crypto = { path = "../sapling-crypto" }
+zcash_primitives = { path = "../zcash_primitives" }
+
+[dev-dependencies]
+rand = "0.4"

zcash_client_backend/README.md

@@ -1,6 +1,6 @@
-# zcash_wallet
+# zcash_client_backend
 
-This library contains Rust structs and traits for creating shielded Zcash wallets.
+This library contains Rust structs and traits for creating shielded Zcash light clients.
 
 ## License
 

zcash_client_backend/src/constants.rs

@@ -0,0 +1,4 @@
+//! Zcash global and per-network constants.
+
+pub mod mainnet;
+pub mod testnet;

zcash_client_backend/src/constants/mainnet.rs

@@ -0,0 +1,28 @@
+/// The mainnet coin type for ZEC, as defined by [SLIP 44].
+///
+/// [SLIP 44]: https://github.com/satoshilabs/slips/blob/master/slip-0044.md
+pub const COIN_TYPE: u32 = 133;
+
+/// The HRP for a Bech32-encoded mainnet [`ExtendedSpendingKey`].
+///
+/// Defined in [ZIP 32].
+///
+/// [`ExtendedSpendingKey`]: zcash_primitives::zip32::ExtendedSpendingKey
+/// [ZIP 32]: https://github.com/zcash/zips/blob/master/zip-0032.rst
+pub const HRP_SAPLING_EXTENDED_SPENDING_KEY: &str = "secret-extended-key-main";
+
+/// The HRP for a Bech32-encoded mainnet [`ExtendedFullViewingKey`].
+///
+/// Defined in [ZIP 32].
+///
+/// [`ExtendedFullViewingKey`]: zcash_primitives::zip32::ExtendedFullViewingKey
+/// [ZIP 32]: https://github.com/zcash/zips/blob/master/zip-0032.rst
+pub const HRP_SAPLING_EXTENDED_FULL_VIEWING_KEY: &str = "zxviews";
+
+/// The HRP for a Bech32-encoded mainnet [`PaymentAddress`].
+///
+/// Defined in section 5.6.4 of the [Zcash Protocol Specification].
+///
+/// [`PaymentAddress`]: sapling_crypto::primitives::PaymentAddress
+/// [Zcash Protocol Specification]: https://github.com/zcash/zips/blob/master/protocol/protocol.pdf
+pub const HRP_SAPLING_PAYMENT_ADDRESS: &str = "zs";

zcash_client_backend/src/constants/testnet.rs

@@ -0,0 +1,28 @@
+/// The testnet coin type for ZEC, as defined by [SLIP 44].
+///
+/// [SLIP 44]: https://github.com/satoshilabs/slips/blob/master/slip-0044.md
+pub const COIN_TYPE: u32 = 1;
+
+/// The HRP for a Bech32-encoded testnet [`ExtendedSpendingKey`].
+///
+/// Defined in [ZIP 32].
+///
+/// [`ExtendedSpendingKey`]: zcash_primitives::zip32::ExtendedSpendingKey
+/// [ZIP 32]: https://github.com/zcash/zips/blob/master/zip-0032.rst
+pub const HRP_SAPLING_EXTENDED_SPENDING_KEY: &str = "secret-extended-key-test";
+
+/// The HRP for a Bech32-encoded testnet [`ExtendedFullViewingKey`].
+///
+/// Defined in [ZIP 32].
+///
+/// [`ExtendedFullViewingKey`]: zcash_primitives::zip32::ExtendedFullViewingKey
+/// [ZIP 32]: https://github.com/zcash/zips/blob/master/zip-0032.rst
+pub const HRP_SAPLING_EXTENDED_FULL_VIEWING_KEY: &str = "zxviewtestsapling";
+
+/// The HRP for a Bech32-encoded testnet [`PaymentAddress`].
+///
+/// Defined in section 5.6.4 of the [Zcash Protocol Specification].
+///
+/// [`PaymentAddress`]: sapling_crypto::primitives::PaymentAddress
+/// [Zcash Protocol Specification]: https://github.com/zcash/zips/blob/master/protocol/protocol.pdf
+pub const HRP_SAPLING_PAYMENT_ADDRESS: &str = "ztestsapling";

zcash_client_backend/src/encoding.rs

@@ -0,0 +1,257 @@
+//! Encoding and decoding functions for Zcash key and address structs.
+//!
+//! Human-Readable Prefixes (HRPs) for Bech32 encodings are located in the [`constants`]
+//! module.
+
+use bech32::{convert_bits, Bech32, Error};
+use pairing::bls12_381::Bls12;
+use sapling_crypto::{
+    jubjub::edwards,
+    primitives::{Diversifier, PaymentAddress},
+};
+use std::io::{self, Write};
+use zcash_primitives::{
+    zip32::{ExtendedFullViewingKey, ExtendedSpendingKey},
+    JUBJUB,
+};
+
+fn bech32_encode<F>(hrp: &str, write: F) -> String
+where
+    F: Fn(&mut dyn Write) -> io::Result<()>,
+{
+    let mut data: Vec<u8> = vec![];
+    write(&mut data).expect("Should be able to write to a Vec");
+
+    let converted =
+        convert_bits(&data, 8, 5, true).expect("Should be able to convert Vec<u8> to Vec<u5>");
+    let encoded = Bech32::new_check_data(hrp.into(), converted).expect("hrp is not empty");
+
+    encoded.to_string()
+}
+
+fn bech32_decode<T, F>(hrp: &str, s: &str, read: F) -> Result<Option<T>, Error>
+where
+    F: Fn(Vec<u8>) -> Option<T>,
+{
+    let decoded = s.parse::<Bech32>()?;
+    if decoded.hrp() == hrp {
+        convert_bits(decoded.data(), 5, 8, false).map(|data| read(data))
+    } else {
+        Ok(None)
+    }
+}
+
+/// Writes an [`ExtendedSpendingKey`] as a Bech32-encoded string.
+///
+/// # Examples
+///
+/// ```
+/// use zcash_client_backend::{
+///     constants::testnet::{COIN_TYPE, HRP_SAPLING_EXTENDED_SPENDING_KEY},
+///     encoding::encode_extended_spending_key,
+///     keys::spending_key,
+/// };
+///
+/// let extsk = spending_key(&[0; 32][..], COIN_TYPE, 0);
+/// let encoded = encode_extended_spending_key(HRP_SAPLING_EXTENDED_SPENDING_KEY, &extsk);
+/// ```
+pub fn encode_extended_spending_key(hrp: &str, extsk: &ExtendedSpendingKey) -> String {
+    bech32_encode(hrp, |w| extsk.write(w))
+}
+
+/// Decodes an [`ExtendedSpendingKey`] from a Bech32-encoded string.
+pub fn decode_extended_spending_key(
+    hrp: &str,
+    s: &str,
+) -> Result<Option<ExtendedSpendingKey>, Error> {
+    bech32_decode(hrp, s, |data| ExtendedSpendingKey::read(&data[..]).ok())
+}
+
+/// Writes an [`ExtendedFullViewingKey`] as a Bech32-encoded string.
+///
+/// # Examples
+///
+/// ```
+/// use zcash_client_backend::{
+///     constants::testnet::{COIN_TYPE, HRP_SAPLING_EXTENDED_FULL_VIEWING_KEY},
+///     encoding::encode_extended_full_viewing_key,
+///     keys::spending_key,
+/// };
+/// use zcash_primitives::zip32::ExtendedFullViewingKey;
+///
+/// let extsk = spending_key(&[0; 32][..], COIN_TYPE, 0);
+/// let extfvk = ExtendedFullViewingKey::from(&extsk);
+/// let encoded = encode_extended_full_viewing_key(HRP_SAPLING_EXTENDED_FULL_VIEWING_KEY, &extfvk);
+/// ```
+pub fn encode_extended_full_viewing_key(hrp: &str, extfvk: &ExtendedFullViewingKey) -> String {
+    bech32_encode(hrp, |w| extfvk.write(w))
+}
+
+/// Decodes an [`ExtendedFullViewingKey`] from a Bech32-encoded string.
+pub fn decode_extended_full_viewing_key(
+    hrp: &str,
+    s: &str,
+) -> Result<Option<ExtendedFullViewingKey>, Error> {
+    bech32_decode(hrp, s, |data| ExtendedFullViewingKey::read(&data[..]).ok())
+}
+
+/// Writes a [`PaymentAddress`] as a Bech32-encoded string.
+///
+/// # Examples
+///
+/// ```
+/// use pairing::bls12_381::Bls12;
+/// use rand::{SeedableRng, XorShiftRng};
+/// use sapling_crypto::{
+///     jubjub::edwards,
+///     primitives::{Diversifier, PaymentAddress},
+/// };
+/// use zcash_client_backend::{
+///     constants::testnet::HRP_SAPLING_PAYMENT_ADDRESS,
+///     encoding::encode_payment_address,
+/// };
+/// use zcash_primitives::JUBJUB;
+///
+/// let rng = &mut XorShiftRng::from_seed([0x3dbe6259, 0x8d313d76, 0x3237db17, 0xe5bc0654]);
+///
+/// let pa = PaymentAddress {
+///     diversifier: Diversifier([0u8; 11]),
+///     pk_d: edwards::Point::<Bls12, _>::rand(rng, &JUBJUB).mul_by_cofactor(&JUBJUB),
+/// };
+///
+/// assert_eq!(
+///     encode_payment_address(HRP_SAPLING_PAYMENT_ADDRESS, &pa),
+///     "ztestsapling1qqqqqqqqqqqqqqqqqqxrrfaccydp867g6zg7ne5ht37z38jtfyw0ygmp0ja6hhf07twjq6awtaj",
+/// );
+/// ```
+pub fn encode_payment_address(hrp: &str, addr: &PaymentAddress<Bls12>) -> String {
+    bech32_encode(hrp, |w| {
+        w.write_all(&addr.diversifier.0)?;
+        addr.pk_d.write(w)
+    })
+}
+
+/// Decodes a [`PaymentAddress`] from a Bech32-encoded string.
+///
+/// # Examples
+///
+/// ```
+/// use pairing::bls12_381::Bls12;
+/// use rand::{SeedableRng, XorShiftRng};
+/// use sapling_crypto::{
+///     jubjub::edwards,
+///     primitives::{Diversifier, PaymentAddress},
+/// };
+/// use zcash_client_backend::{
+///     constants::testnet::HRP_SAPLING_PAYMENT_ADDRESS,
+///     encoding::decode_payment_address,
+/// };
+/// use zcash_primitives::JUBJUB;
+///
+/// let rng = &mut XorShiftRng::from_seed([0x3dbe6259, 0x8d313d76, 0x3237db17, 0xe5bc0654]);
+///
+/// let pa = PaymentAddress {
+///     diversifier: Diversifier([0u8; 11]),
+///     pk_d: edwards::Point::<Bls12, _>::rand(rng, &JUBJUB).mul_by_cofactor(&JUBJUB),
+/// };
+///
+/// assert_eq!(
+///     decode_payment_address(
+///         HRP_SAPLING_PAYMENT_ADDRESS,
+///         "ztestsapling1qqqqqqqqqqqqqqqqqqxrrfaccydp867g6zg7ne5ht37z38jtfyw0ygmp0ja6hhf07twjq6awtaj",
+///     ),
+///     Ok(Some(pa)),
+/// );
+/// ```
+pub fn decode_payment_address(hrp: &str, s: &str) -> Result<Option<PaymentAddress<Bls12>>, Error> {
+    bech32_decode(hrp, s, |data| {
+        let mut diversifier = Diversifier([0; 11]);
+        diversifier.0.copy_from_slice(&data[0..11]);
+        // Check that the diversifier is valid
+        if diversifier.g_d::<Bls12>(&JUBJUB).is_none() {
+            return None;
+        }
+
+        edwards::Point::<Bls12, _>::read(&data[11..], &JUBJUB)
+            .ok()?
+            .as_prime_order(&JUBJUB)
+            .map(|pk_d| PaymentAddress { pk_d, diversifier })
+    })
+}
+
+#[cfg(test)]
+mod tests {
+    use pairing::bls12_381::Bls12;
+    use rand::{SeedableRng, XorShiftRng};
+    use sapling_crypto::{
+        jubjub::edwards,
+        primitives::{Diversifier, PaymentAddress},
+    };
+    use zcash_primitives::JUBJUB;
+
+    use super::{decode_payment_address, encode_payment_address};
+    use crate::constants;
+
+    #[test]
+    fn payment_address() {
+        let rng = &mut XorShiftRng::from_seed([0x3dbe6259, 0x8d313d76, 0x3237db17, 0xe5bc0654]);
+
+        let addr = PaymentAddress {
+            diversifier: Diversifier([0u8; 11]),
+            pk_d: edwards::Point::<Bls12, _>::rand(rng, &JUBJUB).mul_by_cofactor(&JUBJUB),
+        };
+
+        let encoded_main =
+            "zs1qqqqqqqqqqqqqqqqqqxrrfaccydp867g6zg7ne5ht37z38jtfyw0ygmp0ja6hhf07twjqj2ug6x";
+        let encoded_test =
+            "ztestsapling1qqqqqqqqqqqqqqqqqqxrrfaccydp867g6zg7ne5ht37z38jtfyw0ygmp0ja6hhf07twjq6awtaj";
+
+        assert_eq!(
+            encode_payment_address(constants::mainnet::HRP_SAPLING_PAYMENT_ADDRESS, &addr),
+            encoded_main
+        );
+        assert_eq!(
+            decode_payment_address(
+                constants::mainnet::HRP_SAPLING_PAYMENT_ADDRESS,
+                encoded_main
+            )
+            .unwrap(),
+            Some(addr.clone())
+        );
+
+        assert_eq!(
+            encode_payment_address(constants::testnet::HRP_SAPLING_PAYMENT_ADDRESS, &addr),
+            encoded_test
+        );
+        assert_eq!(
+            decode_payment_address(
+                constants::testnet::HRP_SAPLING_PAYMENT_ADDRESS,
+                encoded_test
+            )
+            .unwrap(),
+            Some(addr)
+        );
+    }
+
+    #[test]
+    fn invalid_diversifier() {
+        let rng = &mut XorShiftRng::from_seed([0x3dbe6259, 0x8d313d76, 0x3237db17, 0xe5bc0654]);
+
+        let addr = PaymentAddress {
+            diversifier: Diversifier([1u8; 11]),
+            pk_d: edwards::Point::<Bls12, _>::rand(rng, &JUBJUB).mul_by_cofactor(&JUBJUB),
+        };
+
+        let encoded_main =
+            encode_payment_address(constants::mainnet::HRP_SAPLING_PAYMENT_ADDRESS, &addr);
+
+        assert_eq!(
+            decode_payment_address(
+                constants::mainnet::HRP_SAPLING_PAYMENT_ADDRESS,
+                &encoded_main
+            )
+            .unwrap(),
+            None
+        );
+    }
+}

zcash_client_backend/src/keys.rs

@@ -0,0 +1,24 @@
+//! Helper functions for managing light client key material.
+
+use zcash_primitives::zip32::{ChildIndex, ExtendedSpendingKey};
+
+/// Derives the ZIP 32 [`ExtendedSpendingKey`] for a given coin type and account from the
+/// given seed.
+///
+/// # Examples
+///
+/// ```
+/// use zcash_client_backend::{constants::testnet::COIN_TYPE, keys::spending_key};
+///
+/// let extsk = spending_key(&[0; 32][..], COIN_TYPE, 0);
+/// ```
+pub fn spending_key(seed: &[u8], coin_type: u32, account: u32) -> ExtendedSpendingKey {
+    ExtendedSpendingKey::from_path(
+        &ExtendedSpendingKey::master(&seed),
+        &[
+            ChildIndex::Hardened(32),
+            ChildIndex::Hardened(coin_type),
+            ChildIndex::Hardened(account),
+        ],
+    )
+}

zcash_client_backend/src/lib.rs

@@ -0,0 +1,8 @@
+//! *A crate for implementing Zcash light clients.*
+//!
+//! `zcash_client_backend` contains Rust structs and traits for creating shielded Zcash
+//! light clients.
+
+pub mod constants;
+pub mod encoding;
+pub mod keys;

zcash_primitives/Cargo.toml

@@ -6,9 +6,11 @@ authors = [
 ]
 
 [dependencies]
+aes = "0.2"
 byteorder = "1"
 crypto_api_chachapoly = "0.1"
 ff = { path = "../ff" }
+fpe = "0.1"
 hex = "0.3"
 lazy_static = "1"
 pairing = { path = "../pairing" }

zcash_primitives/src/lib.rs

@@ -1,10 +1,12 @@
 #[macro_use]
 extern crate lazy_static;
 
+extern crate aes;
 extern crate blake2_rfc;
 extern crate byteorder;
 extern crate crypto_api_chachapoly;
 extern crate ff;
+extern crate fpe;
 extern crate hex;
 extern crate pairing;
 extern crate rand;
@@ -19,6 +21,7 @@ pub mod note_encryption;
 pub mod sapling;
 mod serialize;
 pub mod transaction;
+pub mod zip32;
 
 #[cfg(test)]
 mod test_vectors;

zcash_primitives/src/zip32.rs

@@ -1,12 +1,3 @@
-extern crate aes;
-extern crate blake2_rfc;
-extern crate byteorder;
-extern crate ff;
-extern crate fpe;
-extern crate pairing;
-extern crate sapling_crypto;
-extern crate zcash_primitives;
-
 use aes::Aes256;
 use blake2_rfc::blake2b::Blake2b;
 use byteorder::{ByteOrder, LittleEndian, ReadBytesExt, WriteBytesExt};
@@ -18,7 +9,8 @@ use sapling_crypto::{
     primitives::{Diversifier, PaymentAddress, ViewingKey},
 };
 use std::io::{self, Read, Write};
-use zcash_primitives::{
+
+use crate::{
     keys::{prf_expand, prf_expand_vec, ExpandedSpendingKey, FullViewingKey, OutgoingViewingKey},
     JUBJUB,
 };

zcash_wallet/Cargo.toml

@@ -1,8 +0,0 @@
-[package]
-name = "zcash_wallet"
-version = "0.0.0"
-authors = [
-    "Jack Grigg <jack@z.cash>",
-]
-
-[dependencies]

zcash_wallet/src/lib.rs

@@ -1,7 +0,0 @@
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        assert_eq!(2 + 2, 4);
-    }
-}

zip32/.gitignore

@@ -1,3 +0,0 @@
-/target
-**/*.rs.bk
-Cargo.lock

zip32/COPYRIGHT

@@ -1,14 +0,0 @@
-Copyrights in the "zip32" library are retained by their contributors. No
-copyright assignment is required to contribute to the "zip32" library.
-
-The "zip32" library is licensed under either of
-
- * Apache License, Version 2.0, (see ./LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- * MIT license (see ./LICENSE-MIT or http://opensource.org/licenses/MIT)
-
-at your option.
-
-Unless you explicitly state otherwise, any contribution intentionally
-submitted for inclusion in the work by you, as defined in the Apache-2.0
-license, shall be dual licensed as above, without any additional terms or
-conditions.

zip32/Cargo.toml

@@ -1,25 +0,0 @@
-[package]
-name = "zip32"
-version = "0.0.0"
-authors = [
-    "Jack Grigg <jack@z.cash>",
-]
-license = "MIT/Apache-2.0"
-
-description = "Library for implementing shielded hierarchical deterministic wallets"
-documentation = "https://docs.rs/zip32/"
-homepage = "https://github.com/zcash-hackworks/zip32"
-repository = "https://github.com/zcash-hackworks/zip32"
-
-[dependencies]
-aes = "0.2"
-byteorder = "1"
-ff = { path = "../ff" }
-fpe = "0.1"
-pairing = { path = "../pairing" }
-sapling-crypto = { path = "../sapling-crypto" }
-zcash_primitives = { path = "../zcash_primitives" }
-
-[dependencies.blake2-rfc]
-git = "https://github.com/gtank/blake2-rfc"
-rev = "7a5b5fc99ae483a0043db7547fb79a6fa44b88a9"

zip32/LICENSE-APACHE

@@ -1,201 +0,0 @@
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zip32/LICENSE-MIT

@@ -1,23 +0,0 @@
-Permission is hereby granted, free of charge, to any
-person obtaining a copy of this software and associated
-documentation files (the "Software"), to deal in the
-Software without restriction, including without
-limitation the rights to use, copy, modify, merge,
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-the Software, and to permit persons to whom the Software
-is furnished to do so, subject to the following
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-The above copyright notice and this permission notice
-shall be included in all copies or substantial portions
-of the Software.
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-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
-ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
-TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
-PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
-SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
-IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.

zip32/README.md

@@ -1,17 +0,0 @@
-# zip32 [![Crates.io](https://img.shields.io/crates/v/zip32.svg)](https://crates.io/crates/zip32) #
-
-## License
-
-Licensed under either of
-
- * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
- * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
-
-at your option.
-
-### Contribution
-
-Unless you explicitly state otherwise, any contribution intentionally
-submitted for inclusion in the work by you, as defined in the Apache-2.0
-license, shall be dual licensed as above, without any additional terms or
-conditions.