c32check
Version:
Crockford base-32 checksum encoding
3 lines • 15.5 kB
JavaScript
/*! For license information please see c32check.js.LICENSE.txt */
!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.c32check=t():e.c32check=t()}(this,(()=>(()=>{"use strict";var e={320:(e,t)=>{function r(e){if(!Number.isSafeInteger(e)||e<0)throw new Error(`Wrong positive integer: ${e}`)}function n(e){if("boolean"!=typeof e)throw new Error(`Expected boolean, not ${e}`)}function o(e,...t){if(!(e instanceof Uint8Array))throw new TypeError("Expected Uint8Array");if(t.length>0&&!t.includes(e.length))throw new TypeError(`Expected Uint8Array of length ${t}, not of length=${e.length}`)}function s(e){if("function"!=typeof e||"function"!=typeof e.create)throw new Error("Hash should be wrapped by utils.wrapConstructor");r(e.outputLen),r(e.blockLen)}function i(e,t=!0){if(e.destroyed)throw new Error("Hash instance has been destroyed");if(t&&e.finished)throw new Error("Hash#digest() has already been called")}function c(e,t){o(e);const 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t.outputLen=r.outputLen,t.blockLen=r.blockLen,t.create=t=>e(t),t},t.randomBytes=function(e=32){if(n.crypto.web)return n.crypto.web.getRandomValues(new Uint8Array(e));if(n.crypto.node)return new Uint8Array(n.crypto.node.randomBytes(e).buffer);throw new Error("The environment doesn't have randomBytes function")}},162:e=>{e.exports=function(e){if(e.length>=255)throw new TypeError("Alphabet too long");for(var t=new Uint8Array(256),r=0;r<t.length;r++)t[r]=255;for(var n=0;n<e.length;n++){var o=e.charAt(n),s=o.charCodeAt(0);if(255!==t[s])throw new TypeError(o+" is ambiguous");t[s]=n}var i=e.length,c=e.charAt(0),f=Math.log(i)/Math.log(256),a=Math.log(256)/Math.log(i);function h(e){if("string"!=typeof e)throw new TypeError("Expected String");if(0===e.length)return new Uint8Array;for(var r=0,n=0,o=0;e[r]===c;)n++,r++;for(var s=(e.length-r)*f+1>>>0,a=new Uint8Array(s);e[r];){var h=t[e.charCodeAt(r)];if(255===h)return;for(var 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character")}}}},959:(e,t,r)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.c32ToB58=t.b58ToC32=t.c32addressDecode=t.c32address=t.versions=void 0;const n=r(997),o=r(97),s=r(89);t.versions={mainnet:{p2pkh:22,p2sh:20},testnet:{p2pkh:26,p2sh:21}};const i={};i[0]=t.versions.mainnet.p2pkh,i[5]=t.versions.mainnet.p2sh,i[111]=t.versions.testnet.p2pkh,i[196]=t.versions.testnet.p2sh;const c={};function f(e,t){if(!t.match(/^[0-9a-fA-F]{40}$/))throw new Error("Invalid argument: not a hash160 hex string");return`S${(0,n.c32checkEncode)(e,t)}`}function a(e){if(e.length<=5)throw new Error("Invalid c32 address: invalid length");if("S"!=e[0])throw new Error('Invalid c32 address: must start with "S"');return(0,n.c32checkDecode)(e.slice(1))}c[t.versions.mainnet.p2pkh]=0,c[t.versions.mainnet.p2sh]=5,c[t.versions.testnet.p2pkh]=111,c[t.versions.testnet.p2sh]=196,t.c32address=f,t.c32addressDecode=a,t.b58ToC32=function(e,t=-1){const 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t.slice(-4).forEach(((e,t)=>{if(e!==c[t])throw new Error("Invalid checksum")})),{prefix:r,data:o}}},997:(e,t,r)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.c32checkDecode=t.c32checkEncode=void 0;const n=r(61),o=r(89),s=r(558);function i(e){const t=(0,n.sha256)((0,n.sha256)((0,o.hexToBytes)(e)));return(0,o.bytesToHex)(t.slice(0,4))}t.c32checkEncode=function(e,t){if(e<0||e>=32)throw new Error("Invalid version (must be between 0 and 31)");if(!t.match(/^[0-9a-fA-F]*$/))throw new Error("Invalid data (not a hex string)");(t=t.toLowerCase()).length%2!=0&&(t=`0${t}`);let r=e.toString(16);1===r.length&&(r=`0${r}`);const n=i(`${r}${t}`),o=(0,s.c32encode)(`${t}${n}`);return`${s.c32[e]}${o}`},t.c32checkDecode=function(e){e=(0,s.c32normalize)(e);const t=(0,s.c32decode)(e.slice(1)),r=e[0],n=s.c32.indexOf(r),o=t.slice(-8);let c=n.toString(16);if(1===c.length&&(c=`0${c}`),i(`${c}${t.substring(0,t.length-8)}`)!==o)throw new Error("Invalid c32check string: checksum mismatch");return[n,t.substring(0,t.length-8)]}},558:(e,t,r)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.c32decode=t.c32normalize=t.c32encode=t.c32=void 0;const n=r(89);t.c32="0123456789ABCDEFGHJKMNPQRSTVWXYZ";const o="0123456789abcdef";function s(e){return e.toUpperCase().replace(/O/g,"0").replace(/L|I/g,"1")}t.c32encode=function(e,r){if(!e.match(/^[0-9a-fA-F]*$/))throw new Error("Not a hex-encoded string");e.length%2!=0&&(e=`0${e}`);let s=[],i=0;for(let r=(e=e.toLowerCase()).length-1;r>=0;r--)if(i<4){const n=o.indexOf(e[r])>>i;let c=0;0!==r&&(c=o.indexOf(e[r-1]));const f=1+i,a=c%(1<<f)<<5-f,h=t.c32[n+a];i=f,s.unshift(h)}else i=0;let c=0;for(let e=0;e<s.length&&"0"===s[e];e++)c++;s=s.slice(c);const f=(new TextDecoder).decode((0,n.hexToBytes)(e)).match(/^\u0000*/),a=f?f[0].length:0;for(let e=0;e<a;e++)s.unshift(t.c32[0]);if(r){const e=r-s.length;for(let r=0;r<e;r++)s.unshift(t.c32[0])}return s.join("")},t.c32normalize=s,t.c32decode=function(e,r){if(!(e=s(e)).match(`^[${t.c32}]*$`))throw new Error("Not a c32-encoded string");const n=e.match(`^${t.c32[0]}*`),i=n?n[0].length:0;let c=[],f=0,a=0;for(let r=e.length-1;r>=0;r--){4===a&&(c.unshift(o[f]),a=0,f=0);const n=(t.c32.indexOf(e[r])<<a)+f,s=o[n%16];if(a+=1,f=n>>4,f>1<<a)throw new Error("Panic error in decoding.");c.unshift(s)}c.unshift(o[f]),c.length%2==1&&c.unshift("0");let h=0;for(let e=0;e<c.length&&"0"===c[e];e++)h++;c=c.slice(h-h%2);let u=c.join("");for(let e=0;e<i;e++)u=`00${u}`;if(r){const e=2*r-u.length;for(let t=0;t<e;t+=2)u=`00${u}`}return u}}},t={};function r(n){var o=t[n];if(void 0!==o)return o.exports;var s=t[n]={exports:{}};return e[n](s,s.exports,r),s.exports}var n={};return(()=>{var e=n;Object.defineProperty(e,"__esModule",{value:!0}),e.b58ToC32=e.c32ToB58=e.versions=e.c32normalize=e.c32addressDecode=e.c32address=e.c32checkDecode=e.c32checkEncode=e.c32decode=e.c32encode=void 0;const t=r(558);Object.defineProperty(e,"c32encode",{enumerable:!0,get:function(){return t.c32encode}}),Object.defineProperty(e,"c32decode",{enumerable:!0,get:function(){return t.c32decode}}),Object.defineProperty(e,"c32normalize",{enumerable:!0,get:function(){return t.c32normalize}});const o=r(997);Object.defineProperty(e,"c32checkEncode",{enumerable:!0,get:function(){return o.c32checkEncode}}),Object.defineProperty(e,"c32checkDecode",{enumerable:!0,get:function(){return o.c32checkDecode}});const s=r(959);Object.defineProperty(e,"c32address",{enumerable:!0,get:function(){return s.c32address}}),Object.defineProperty(e,"c32addressDecode",{enumerable:!0,get:function(){return s.c32addressDecode}}),Object.defineProperty(e,"c32ToB58",{enumerable:!0,get:function(){return s.c32ToB58}}),Object.defineProperty(e,"b58ToC32",{enumerable:!0,get:function(){return s.b58ToC32}}),Object.defineProperty(e,"versions",{enumerable:!0,get:function(){return s.versions}})})(),n})()));
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