otpauth/dist/otpauth.cjs.min.js

One Time Password (HOTP/TOTP) library for Node.js, Deno and browsers

/*! otpauth v7.0.5 | (c) Héctor Molinero Fernández <hector@molinero.dev> | MIT | https://github.com/hectorm/otpauth */
/*! jssha v3.2.0 | (c) Brian Turek <brian.turek@gmail.com> | BSD-3-Clause | https://github.com/Caligatio/jsSHA */
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},NodeCrypto$1=isNode?nodeRequire("crypto"):void 0,BrowserCrypto=isNode?void 0:globalThis.crypto||globalThis.msCrypto,randomBytes=function(e){if(isNode)return NodeCrypto$1.randomBytes(e).buffer;if(!BrowserCrypto||!BrowserCrypto.getRandomValues)throw new Error("Cryptography API not available");return BrowserCrypto.getRandomValues(new Uint8Array(e)).buffer},Secret=function(){function e(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},n=t.buffer,r=t.size,i=void 0===r?20:r;_classCallCheck(this,e),this.buffer=void 0===n?randomBytes(i):n}return _createClass(e,[{key:"latin1",get:function(){return Object.defineProperty(this,"latin1",{enumerable:!0,value:latin1FromBuf(this.buffer)}),this.latin1}},{key:"utf8",get:function(){return Object.defineProperty(this,"utf8",{enumerable:!0,value:utf8FromBuf(this.buffer)}),this.utf8}},{key:"base32",get:function(){return Object.defineProperty(this,"base32",{enumerable:!0,value:base32FromBuf(this.buffer)}),this.base32}},{key:"hex",get:function(){
return Object.defineProperty(this,"hex",{enumerable:!0,value:hexFromBuf(this.buffer)}),this.hex}}],[{key:"fromLatin1",value:function(t){return new e({buffer:latin1ToBuf(t)})}},{key:"fromUTF8",value:function(t){return new e({buffer:utf8ToBuf(t)})}},{key:"fromBase32",value:function(t){return new e({buffer:base32ToBuf(t)})}},{key:"fromHex",value:function(t){return new e({buffer:hexToBuf(t)})}}]),e}(),NodeBuffer=isNode?globalThis.Buffer:void 0,NodeCrypto=isNode?nodeRequire("crypto"):void 0,timingSafeEqual=function(e,t){if(isNode)return NodeCrypto.timingSafeEqual(NodeBuffer.from(e),NodeBuffer.from(t));if(e.length!==t.length)throw new TypeError("Input strings must have the same length");for(var n=-1,r=0;++n<e.length;)r|=e.charCodeAt(n)^t.charCodeAt(n);return 0===r},HOTP=function(){function e(){
var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},n=t.issuer,r=void 0===n?e.defaults.issuer:n,i=t.label,o=void 0===i?e.defaults.label:i,u=t.secret,a=void 0===u?new Secret:u,s=t.algorithm,f=void 0===s?e.defaults.algorithm:s,c=t.digits,h=void 0===c?e.defaults.digits:c,l=t.counter,w=void 0===l?e.defaults.counter:l;_classCallCheck(this,e),this.issuer=r,this.label=o,this.secret="string"==typeof a?Secret.fromBase32(a):a,this.algorithm=f.toUpperCase(),this.digits=h,this.counter=w}return _createClass(e,[{key:"generate",value:function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},n=t.counter,r=void 0===n?this.counter++:n;return e.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:r})}},{key:"validate",value:function(t){var n=t.token,r=t.counter,i=void 0===r?this.counter:r,o=t.window;return e.validate({token:n,secret:this.secret,algorithm:this.algorithm,digits:this.digits,counter:i,window:o})}},{key:"toString",value:function(){var e=encodeURIComponent
;return"otpauth://hotp/"+"".concat(this.issuer.length>0?"".concat(e(this.issuer),":").concat(e(this.label),"?issuer=").concat(e(this.issuer),"&"):"".concat(e(this.label),"?"))+"secret=".concat(e(this.secret.base32),"&")+"algorithm=".concat(e(this.algorithm),"&")+"digits=".concat(e(this.digits),"&")+"counter=".concat(e(this.counter))}}],[{key:"defaults",get:function(){return{issuer:"",label:"OTPAuth",algorithm:"SHA1",digits:6,counter:0,window:1}}},{key:"generate",value:function(t){var n=t.secret,r=t.algorithm,i=void 0===r?e.defaults.algorithm:r,o=t.digits,u=void 0===o?e.defaults.digits:o,a=t.counter,s=void 0===a?e.defaults.counter:a,f=new Uint8Array(hmacDigest(i,n.buffer,uintToBuf(s))),c=15&f[f.byteLength-1],h=((127&f[c])<<24|(255&f[c+1])<<16|(255&f[c+2])<<8|255&f[c+3])%Math.pow(10,u);return pad(h,u)}},{key:"validate",value:function(t){var n=t.token,r=t.secret,i=t.algorithm,o=t.digits,u=t.counter,a=void 0===u?e.defaults.counter:u,s=t.window,f=void 0===s?e.defaults.window:s;if(n.length!==o)return null
;for(var c=null,h=a-f;h<=a+f;++h){var l=e.generate({secret:r,algorithm:i,digits:o,counter:h});timingSafeEqual(n,l)&&(c=h-a)}return c}}]),e}(),TOTP=function(){function e(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},n=t.issuer,r=void 0===n?e.defaults.issuer:n,i=t.label,o=void 0===i?e.defaults.label:i,u=t.secret,a=void 0===u?new Secret:u,s=t.algorithm,f=void 0===s?e.defaults.algorithm:s,c=t.digits,h=void 0===c?e.defaults.digits:c,l=t.period,w=void 0===l?e.defaults.period:l;_classCallCheck(this,e),this.issuer=r,this.label=o,this.secret="string"==typeof a?Secret.fromBase32(a):a,this.algorithm=f.toUpperCase(),this.digits=h,this.period=w}return _createClass(e,[{key:"generate",value:function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},n=t.timestamp,r=void 0===n?Date.now():n;return e.generate({secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:r})}},{key:"validate",value:function(t){var n=t.token,r=t.timestamp,i=t.window
;return e.validate({token:n,secret:this.secret,algorithm:this.algorithm,digits:this.digits,period:this.period,timestamp:r,window:i})}},{key:"toString",value:function(){var e=encodeURIComponent;return"otpauth://totp/"+"".concat(this.issuer.length>0?"".concat(e(this.issuer),":").concat(e(this.label),"?issuer=").concat(e(this.issuer),"&"):"".concat(e(this.label),"?"))+"secret=".concat(e(this.secret.base32),"&")+"algorithm=".concat(e(this.algorithm),"&")+"digits=".concat(e(this.digits),"&")+"period=".concat(e(this.period))}}],[{key:"defaults",get:function(){return{issuer:"",label:"OTPAuth",algorithm:"SHA1",digits:6,period:30,window:1}}},{key:"generate",value:function(t){var n=t.secret,r=t.algorithm,i=t.digits,o=t.period,u=void 0===o?e.defaults.period:o,a=t.timestamp,s=void 0===a?Date.now():a;return HOTP.generate({secret:n,algorithm:r,digits:i,counter:Math.floor(s/1e3/u)})}},{key:"validate",value:function(t){
var n=t.token,r=t.secret,i=t.algorithm,o=t.digits,u=t.period,a=void 0===u?e.defaults.period:u,s=t.timestamp,f=void 0===s?Date.now():s,c=t.window;return HOTP.validate({token:n,secret:r,algorithm:i,digits:o,counter:Math.floor(f/1e3/a),window:c})}}]),e}(),OTPURI_REGEX=/^otpauth:\/\/([ht]otp)\/(.+)\?((?:&?[A-Z0-9.~_-]+=[^&]*)+)$/i,SECRET_REGEX=/^[2-7A-Z]+=*$/i,ALGORITHM_REGEX=/^SHA(?:1|224|256|384|512|3-224|3-256|3-384|3-512)$/i,INTEGER_REGEX=/^[+-]?\d+$/,POSITIVE_INTEGER_REGEX=/^\+?[1-9]\d*$/,URI=function(){function e(){_classCallCheck(this,e)}return _createClass(e,null,[{key:"parse",value:function(e){var t;try{t=e.match(OTPURI_REGEX)}catch(e){}if(!Array.isArray(t))throw new URIError("Invalid URI format");var n,r=t[1].toLowerCase(),i=t[2].split(/:(.+)/,2).map(decodeURIComponent),o=t[3].split("&").reduce((function(e,t){var n=t.split(/=(.*)/,2).map(decodeURIComponent),r=n[0].toLowerCase(),i=n[1],o=e;return o[r]=i,o}),{}),u={};if("hotp"===r){if(n=HOTP,
void 0===o.counter||!INTEGER_REGEX.test(o.counter))throw new TypeError("Missing or invalid 'counter' parameter");u.counter=parseInt(o.counter,10)}else{if("totp"!==r)throw new TypeError("Unknown OTP type");if(n=TOTP,void 0!==o.period){if(!POSITIVE_INTEGER_REGEX.test(o.period))throw new TypeError("Invalid 'period' parameter");u.period=parseInt(o.period,10)}}if(2===i.length)if(u.label=i[1],void 0===o.issuer)u.issuer=i[0];else{if(o.issuer!==i[0])throw new TypeError("Invalid 'issuer' parameter");u.issuer=o.issuer}else u.label=i[0],void 0!==o.issuer&&(u.issuer=o.issuer);if(void 0===o.secret||!SECRET_REGEX.test(o.secret))throw new TypeError("Missing or invalid 'secret' parameter");if(u.secret=o.secret,void 0!==o.algorithm){if(!ALGORITHM_REGEX.test(o.algorithm))throw new TypeError("Invalid 'algorithm' parameter");u.algorithm=o.algorithm}if(void 0!==o.digits){if(!POSITIVE_INTEGER_REGEX.test(o.digits))throw new TypeError("Invalid 'digits' parameter");u.digits=parseInt(o.digits,10)}return new n(u)}},{key:"stringify",
value:function(e){if(e instanceof HOTP||e instanceof TOTP)return e.toString();throw new TypeError("Invalid 'HOTP/TOTP' object")}}]),e}(),version="7.0.5";exports.HOTP=HOTP,exports.Secret=Secret,exports.TOTP=TOTP,exports.URI=URI,exports.version=version;
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