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Install rust\n\nRun the following code in your terminal to download Rustup and install Rust.\n```\n# curl https://sh.rustup.rs -sSf | sh\n```\nAfter installation, run:\n```\n# source $HOME/.cargo/env\n```\n\n2. Install wasm-pack\nTo build our library, we use `wasm-pack` to pack.\n\n```\n$ cargo install wasm-pack\n```\n\n3. Install Node with npm. In MacOS, you can run\n```\n# brew install node\n```\nIn other OS, you can do as Nodejs site.\n\n## Pack\n\n1. Obtain the source code of project.\n\n2. In the root directory of this project, run\n\n```\nwasm-pack build --target nodejs --out-dir redjubjub-js\n```\nIf you use this library in browser, run\n```\nwasm-pack build --target browser --out-dir redjubjub-js\n```\n`redjubjub-js` will be generated in root directory.\n\n3. In `redjubjub-js` directory, run\n\n```\n# npm pack\n```\n`redjubjub-js-1.0.0.tgz` will be generated in current directory. \n\nYou can install `redjubjub-js-1.0.0.tgz` with npm.\n\n# How to use\n\n## Generate keys\n\n### generate_keys\n\nThis method is used for geneating keys and payment address randomly.\n\n```console\n> var m = require('redjubjub-js')\n> m.generate_keys()\n{ sk:\n 'c8a6bd72038d62794c551cb4c38b5d586c7df975fb7df819f9adbd571cc5228f',\n ask:\n '58998c6373aa1c2ee724ab16d7a34df2d39bc9c07d68b060b1fffe119167ab00',\n nsk:\n 'b3789542ef606d435e654962abc320fa4aad0a424c45b918187ca33052772403',\n ovk:\n '398d3d1889d2f2020ea4c3e76b2ab8711a301a57af1cd09768599d8368cfcaa6',\n ak:\n 'd77a6d56ded895d81f7bed8919081124a7e2e28728f4459ba64cf568f54524b7',\n nk:\n '723951fd2d5a29a90d46137d0a5d502fb03524d5ceceefdc97797bbbb8df52eb',\n ivk:\n 'd1cc0bf81ead15c55c5cfe4b0b8ec4a735889c11b7d4d281734b42498fa9ce05',\n d: 'c64c97cdcf1e88ab4e5040',\n pk_d:\n 'baa02b718197e56f70625452cc9f05c4325b5ba59577d5b8ccf4afc8907a77b2',\n payment_address:\n 'ztron1cexf0nw0r6y2knjsgza2q2m3sxt72mmsvf299nylqhzryk6m5k2h04dcen62ljys0fmmyq2x49f' }\n\n```\n\n### generate_keys_by_sk\n\nGenerate keys and payment address by `sk`, and `d` is generated randomly.\n\n```console\n> m.generate_keys_by_sk('b94113ad57a8808e67edc05e8d3a5bc5aaccf837b83bfa7602a30a14e50c2f95')\n{ sk:\n 'b94113ad57a8808e67edc05e8d3a5bc5aaccf837b83bfa7602a30a14e50c2f95',\n ask:\n '38c7850745daba75720261b2543cd2d1f316c1f5d4e712c21d4c893d67c38408',\n nsk:\n '399ff8d7d660ca4b8cdf3f2e0ce839f35f6fde80a3d094637699b478405e7507',\n ovk:\n '3a82fe7e4487dd839429874befa09a9f78741ba0de83d08950f776708c9e74e4',\n ak:\n 'db0cc9cc4deffd21c4025ae78b55444fa040f244ff7097b35cad4ec96631bb9b',\n nk:\n '532323a356f2ffecf7abd01ad6860f0eea4bf9e7516dd355d0963874e45b7233',\n ivk:\n '48e83b9b5210a8f1a44ad0b5c87203a0a358c34f2511d01e4db743710cebda07',\n d: 'e8f0394a1f6e823901b40a',\n pk_d:\n '017d3fb3a63e03079586dcf24a260bd5c02e18265947ffdf4935bd34a8076a53',\n payment_address:\n 'ztron1arcrjjsld6prjqd5pgqh60an5clqxpu4smw0yj3xp02uqtscyev50l7lfy6m6d9gqa49xrmly5e' }\n\n```\n\n### generate_keys_by_sk_d\n\nGenerate keys and payment address by `sk`, and `d`.\n\n```console\n> m.generate_keys_by_sk_d('b94113ad57a8808e67edc05e8d3a5bc5aaccf837b83bfa7602a30a14e50c2f95','e8f0394a1f6e823901b40a')\n{ sk:\n 'b94113ad57a8808e67edc05e8d3a5bc5aaccf837b83bfa7602a30a14e50c2f95',\n ask:\n '38c7850745daba75720261b2543cd2d1f316c1f5d4e712c21d4c893d67c38408',\n nsk:\n '399ff8d7d660ca4b8cdf3f2e0ce839f35f6fde80a3d094637699b478405e7507',\n ovk:\n '3a82fe7e4487dd839429874befa09a9f78741ba0de83d08950f776708c9e74e4',\n ak:\n 'db0cc9cc4deffd21c4025ae78b55444fa040f244ff7097b35cad4ec96631bb9b',\n nk:\n '532323a356f2ffecf7abd01ad6860f0eea4bf9e7516dd355d0963874e45b7233',\n ivk:\n '48e83b9b5210a8f1a44ad0b5c87203a0a358c34f2511d01e4db743710cebda07',\n d: 'e8f0394a1f6e823901b40a',\n pk_d:\n '017d3fb3a63e03079586dcf24a260bd5c02e18265947ffdf4935bd34a8076a53',\n payment_address:\n 'ztron1arcrjjsld6prjqd5pgqh60an5clqxpu4smw0yj3xp02uqtscyev50l7lfy6m6d9gqa49xrmly5e' }\n\n```\n\n\n## Signature\nWe also provide methods to sign and verify signature for spend authority signature.\n\n### spend authority signature\n\n#### generate_rk_by_ask\n\nGenerate public key `rk` by `ask` and `alpha`.\n\n```JavaScript\nfunction generate_rk_by_ask(ask, alpha)\n```\n\n```console\n> m.generate_rk_by_ask('e3ebcba1531f6d9158d9c162660c5d7c04dadf77d85d7436a9c98b291ff69a09','2608999c3a97d005a879ecdaa16fd29ae434fb67b177c5e875b0c829e6a1db04')\n'10c702d6dff1509502ee5acc0b01d4b4531b2ff53b0dd54488aea6031b5e6d16'\n``` \n\n#### generate_spend_auth_sig\n\nGenerate spend authority signature.\n\n```JavaScript\nfunction generate_spend_auth_sig(ask, alpha, message_hash)\n```\n\n```console\n> m.generate_spend_auth_sig('e3ebcba1531f6d9158d9c162660c5d7c04dadf77d85d7436a9c98b291ff69a09','2608999c3a97d005a879ecdaa16fd29ae434fb67b177c5e875b0c829e6a1db04','3b78fee6e956f915ffe082284c5f18640edca9c57a5f227e5f7d7eb65ad61502')\n'40386915d075844a6ea1bd80fd0b6c74bb4556ac0273cb2dd47b7b81eacfb83f3a69ac95cf63b98ad7e3120754cb1033656ce0b0eae9a1f0ace829c14005610a'\n```\n\n#### verify_spend_auth_sig\n\nVerify spend authority signature.\n\n```JavaScript\nfunction verify_spend_auth_sig(rk, message_hash, signature)\n```\n\n```console\n> m.verify_spend_auth_sig('10c702d6dff1509502ee5acc0b01d4b4531b2ff53b0dd54488aea6031b5e6d16', '3b78fee6e956f915ffe082284c5f18640edca9c57a5f227e5f7d7eb65ad61502','40386915d075844a6ea1bd80fd0b6c74bb4556ac0273cb2dd47b7b81eacfb83f3a69ac95cf63b98ad7e3120754cb1033656ce0b0eae9a1f0ace829c14005610a')\ntrue\n```\n\n[comment]: <> (### binding signature)\n\n[comment]: <> (#### generate_pk_by_sk)\n\n[comment]: <> (Generate public key `pk` from private key `sk`.)\n\n[comment]: <> (```JavaScript)\n\n[comment]: <> (function generate_pk_by_sk(sk))\n\n[comment]: <> (```)\n\n[comment]: <> (```console)\n\n[comment]: <> (> m.generate_pk_by_sk('e3ebcba1531f6d9158d9c162660c5d7c04dadf77d85d7436a9c98b291ff69a09'))\n\n[comment]: <> ('61a7134af4a6194592735dcda46c3119bdf547bc1e58bd60852cc88ba75f44a3')\n\n[comment]: <> (```)\n\n[comment]: <> (### generate_binding_sig)\n\n[comment]: <> (Generate binding signature)\n\n[comment]: <> (```JavaScript)\n\n[comment]: <> (function generate_binding_sig(sk, message_hash))\n\n[comment]: <> (```)\n\n[comment]: <> (```console)\n\n[comment]: <> (> m.generate_binding_sig('e3ebcba1531f6d9158d9c162660c5d7c04dadf77d85d7436a9c98b291ff69a09','3b78fee6e956f915ffe082284c5f18640edca9c57a5f227e5f7d7eb65ad61502'))\n\n[comment]: <> ('fea301d1f8c0ca3032cdfad36e64aaa27631419fdc84453d994beaa287408adf78e0478b8293eda3b3ba76f5c7efa302116fc577d18f354a5ff42ed25a655001')\n\n[comment]: <> (```)\n\n[comment]: <> (#### verify_binding_sig)\n\n[comment]: <> (```JavaScript)\n\n[comment]: <> (function verify_binding_sig(pk, message_hash, signature))\n\n[comment]: <> (```)\n\n[comment]: <> (```console)\n\n[comment]: <> (> m.verify_binding_sig('61a7134af4a6194592735dcda46c3119bdf547bc1e58bd60852cc88ba75f44a3','3b78fee6e956f915ffe082284c5f18640edca9c57a5f227e5f7d7eb65ad61502','fea301d1f8c0ca3032cdfad36e64aaa27631419fdc84453d994beaa287408adf78e0478b8293eda3b3ba76f5c7efa302116fc577d18f354a5ff42ed25a655001'))\n\n[comment]: <> (true)\n\n[comment]: <> (```)\n\n","readmeFilename":"README.md"}