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@ -1,20 +1,20 @@ |
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#!/bin/bash |
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# Copyright 2019 The Hush developers |
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set -eu |
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# We do not declare our own location because we can use the params |
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# from any other installed coins |
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if [[ "$OSTYPE" == "darwin"* ]]; then |
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PARAMS_DIR="$HOME/Library/Application Support/ZcashParams" |
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else |
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PARAMS_DIR="$HOME/.zcash-params" |
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fi |
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SPROUT_PKEY_NAME='sprout-proving.key' |
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SPROUT_VKEY_NAME='sprout-verifying.key' |
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SAPLING_SPEND_NAME='sapling-spend.params' |
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SAPLING_OUTPUT_NAME='sapling-output.params' |
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SAPLING_SPROUT_GROTH16_NAME='sprout-groth16.params' |
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SPROUT_URL="https://z.cash/downloads" |
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SPROUT_IPFS="/ipfs/QmZKKx7Xup7LiAtFRhYsE1M7waXcv9ir9eCECyXAFGxhEo" |
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URL="https://z.cash/downloads" |
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IPFS="/ipfs/QmZKKx7Xup7LiAtFRhYsE1M7waXcv9ir9eCECyXAFGxhEo" |
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SHA256CMD="$(command -v sha256sum || echo shasum)" |
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SHA256ARGS="$(command -v sha256sum >/dev/null || echo '-a 256')" |
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@ -38,7 +38,7 @@ function fetch_wget { |
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cat <<EOF |
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Retrieving (wget): $SPROUT_URL/$filename |
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Retrieving (wget): $URL/$filename |
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EOF |
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wget \ |
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@ -46,7 +46,7 @@ EOF |
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--output-document="$dlname" \ |
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--continue \ |
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--retry-connrefused --waitretry=3 --timeout=30 \ |
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"$SPROUT_URL/$filename" |
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"$URL/$filename" |
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} |
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function fetch_ipfs { |
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@ -59,10 +59,10 @@ function fetch_ipfs { |
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cat <<EOF |
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Retrieving (ipfs): $SPROUT_IPFS/$filename |
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Retrieving (ipfs): $IPFS/$filename |
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EOF |
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ipfs get --output "$dlname" "$SPROUT_IPFS/$filename" |
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ipfs get --output "$dlname" "$IPFS/$filename" |
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} |
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function fetch_curl { |
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@ -75,13 +75,13 @@ function fetch_curl { |
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cat <<EOF |
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Retrieving (curl): $SPROUT_URL/$filename |
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Retrieving (curl): $URL/$filename |
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EOF |
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curl \ |
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--output "$dlname" \ |
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-# -L -C - \ |
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"$SPROUT_URL/$filename" |
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"$URL/$filename" |
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} |
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@ -159,30 +159,29 @@ function main() { |
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|| exit_locked_error |
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cat <<EOF |
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Zcash - fetch-params.sh |
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Hush - fetch-params.sh |
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This script will fetch the Zcash zkSNARK parameters and verify their |
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integrity with sha256sum. |
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This script will fetch the zkSNARK parameters used in shield |
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transactions and verify their integrity with sha256sum. |
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If they already exist locally, it will exit now and do nothing else. |
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EOF |
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# Now create PARAMS_DIR and insert a README if necessary: |
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if ! [ -d "$PARAMS_DIR" ] |
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then |
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if ! [ -d "$PARAMS_DIR" ]; then |
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mkdir -p "$PARAMS_DIR" |
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README_PATH="$PARAMS_DIR/README" |
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cat >> "$README_PATH" <<EOF |
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This directory stores common Zcash zkSNARK parameters. Note that it is |
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distinct from the daemon's -datadir argument because the parameters are |
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large and may be shared across multiple distinct -datadir's such as when |
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setting up test networks. |
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This directory stores common zkSNARK parameters needed for shielded |
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transactions. Note that it is distinct from the daemon's -datadir argument |
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because the parameters are large and may be shared across multiple distinct |
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-datadir's such as when setting up test networks. |
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EOF |
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# This may be the first time the user's run this script, so give |
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# them some info, especially about bandwidth usage: |
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cat <<EOF |
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The parameters are currently just under 911MB in size, so plan accordingly |
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The parameters are currently about 50MB, so plan accordingly |
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for your bandwidth constraints. If the files are already present and |
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have the correct sha256sum, no networking is used. |
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@ -194,14 +193,9 @@ EOF |
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cd "$PARAMS_DIR" |
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# Sprout parameters: |
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fetch_params "$SPROUT_PKEY_NAME" "$PARAMS_DIR/$SPROUT_PKEY_NAME" "8bc20a7f013b2b58970cddd2e7ea028975c88ae7ceb9259a5344a16bc2c0eef7" |
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fetch_params "$SPROUT_VKEY_NAME" "$PARAMS_DIR/$SPROUT_VKEY_NAME" "4bd498dae0aacfd8e98dc306338d017d9c08dd0918ead18172bd0aec2fc5df82" |
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# Sapling parameters: |
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fetch_params "$SAPLING_SPEND_NAME" "$PARAMS_DIR/$SAPLING_SPEND_NAME" "8e48ffd23abb3a5fd9c5589204f32d9c31285a04b78096ba40a79b75677efc13" |
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fetch_params "$SAPLING_OUTPUT_NAME" "$PARAMS_DIR/$SAPLING_OUTPUT_NAME" "2f0ebbcbb9bb0bcffe95a397e7eba89c29eb4dde6191c339db88570e3f3fb0e4" |
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fetch_params "$SAPLING_SPROUT_GROTH16_NAME" "$PARAMS_DIR/$SAPLING_SPROUT_GROTH16_NAME" "b685d700c60328498fbde589c8c7c484c722b788b265b72af448a5bf0ee55b50" |
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} |
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main |
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Jonathan "Duke" Leto
5 years ago