fast-sha256/sha256.min.js

SHA-256, HMAC and PBKDF2 implementation with typed arrays for modern browsers and Node.js

!function(t){var e={};!function(e){"use strict";e.__esModule=true,e.digestLength=32,e.blockSize=64;var y=new Uint32Array([1116352408,1899447441,3049323471,3921009573,961987163,1508970993,2453635748,2870763221,3624381080,310598401,607225278,1426881987,1925078388,2162078206,2614888103,3248222580,3835390401,4022224774,264347078,604807628,770255983,1249150122,1555081692,1996064986,2554220882,2821834349,2952996808,3210313671,3336571891,3584528711,113926993,338241895,666307205,773529912,1294757372,1396182291,1695183700,1986661051,2177026350,2456956037,2730485921,2820302411,3259730800,3345764771,3516065817,3600352804,4094571909,275423344,430227734,506948616,659060556,883997877,958139571,1322822218,1537002063,1747873779,1955562222,2024104815,2227730452,2361852424,2428436474,2756734187,3204031479,3329325298]);function a(t,e,i,r,s){var n,h,a,f,o,u,d,v,p,c,g,l,b;while(s>=64){n=e[0];h=e[1];a=e[2];f=e[3];o=e[4];u=e[5];d=e[6];v=e[7];for(c=0;c<16;c++){g=r+c*4;t[c]=(i[g]&255)<<24|(i[g+1]&255)<<16|(i[g+2]&255)<<8|i[g+3]&255}for(c=16;c<64;c++){p=t[c-2];l=(p>>>17|p<<32-17)^(p>>>19|p<<32-19)^p>>>10;p=t[c-15];b=(p>>>7|p<<32-7)^(p>>>18|p<<32-18)^p>>>3;t[c]=(l+t[c-7]|0)+(b+t[c-16]|0)}for(c=0;c<64;c++){l=(((o>>>6|o<<32-6)^(o>>>11|o<<32-11)^(o>>>25|o<<32-25))+(o&u^~o&d)|0)+(v+(y[c]+t[c]|0)|0)|0;b=((n>>>2|n<<32-2)^(n>>>13|n<<32-13)^(n>>>22|n<<32-22))+(n&h^n&a^h&a)|0;v=d;d=u;u=o;o=f+l|0;f=a;a=h;h=n;n=l+b|0}e[0]+=n;e[1]+=h;e[2]+=a;e[3]+=f;e[4]+=o;e[5]+=u;e[6]+=d;e[7]+=v;r+=64;s-=64}return r}var r=function(){function t(){this.digestLength=e.digestLength;this.blockSize=e.blockSize;this.state=new Int32Array(8);this.temp=new Int32Array(64);this.buffer=new Uint8Array(128);this.bufferLength=0;this.bytesHashed=0;this.finished=false;this.reset()}t.prototype.reset=function(){this.state[0]=1779033703;this.state[1]=3144134277;this.state[2]=1013904242;this.state[3]=2773480762;this.state[4]=1359893119;this.state[5]=2600822924;this.state[6]=528734635;this.state[7]=1541459225;this.bufferLength=0;this.bytesHashed=0;this.finished=false;return this};t.prototype.clean=function(){for(var t=0;t<this.buffer.length;t++){this.buffer[t]=0}for(var t=0;t<this.temp.length;t++){this.temp[t]=0}this.reset()};t.prototype.update=function(t,e){if(e===void 0){e=t.length}if(this.finished){throw new Error("SHA256: can't update because hash was finished.")}var i=0;this.bytesHashed+=e;if(this.bufferLength>0){while(this.bufferLength<64&&e>0){this.buffer[this.bufferLength++]=t[i++];e--}if(this.bufferLength===64){a(this.temp,this.state,this.buffer,0,64);this.bufferLength=0}}if(e>=64){i=a(this.temp,this.state,t,i,e);e%=64}while(e>0){this.buffer[this.bufferLength++]=t[i++];e--}return this};t.prototype.finish=function(t){if(!this.finished){var e=this.bytesHashed;var i=this.bufferLength;var r=e/536870912|0;var s=e<<3;var n=e%64<56?64:128;this.buffer[i]=128;for(var h=i+1;h<n-8;h++){this.buffer[h]=0}this.buffer[n-8]=r>>>24&255;this.buffer[n-7]=r>>>16&255;this.buffer[n-6]=r>>>8&255;this.buffer[n-5]=r>>>0&255;this.buffer[n-4]=s>>>24&255;this.buffer[n-3]=s>>>16&255;this.buffer[n-2]=s>>>8&255;this.buffer[n-1]=s>>>0&255;a(this.temp,this.state,this.buffer,0,n);this.finished=true}for(var h=0;h<8;h++){t[h*4+0]=this.state[h]>>>24&255;t[h*4+1]=this.state[h]>>>16&255;t[h*4+2]=this.state[h]>>>8&255;t[h*4+3]=this.state[h]>>>0&255}return this};t.prototype.digest=function(){var t=new Uint8Array(this.digestLength);this.finish(t);return t};t.prototype._saveState=function(t){for(var e=0;e<this.state.length;e++){t[e]=this.state[e]}};t.prototype._restoreState=function(t,e){for(var i=0;i<this.state.length;i++){this.state[i]=t[i]}this.bytesHashed=e;this.finished=false;this.bufferLength=0};return t}();e.Hash=r;var c=function(){function t(t){this.inner=new r;this.outer=new r;this.blockSize=this.inner.blockSize;this.digestLength=this.inner.digestLength;var e=new Uint8Array(this.blockSize);if(t.length>this.blockSize){(new r).update(t).finish(e).clean()}else{for(var i=0;i<t.length;i++){e[i]=t[i]}}for(var i=0;i<e.length;i++){e[i]^=54}this.inner.update(e);for(var i=0;i<e.length;i++){e[i]^=54^92}this.outer.update(e);this.istate=new Uint32Array(8);this.ostate=new Uint32Array(8);this.inner._saveState(this.istate);this.outer._saveState(this.ostate);for(var i=0;i<e.length;i++){e[i]=0}}t.prototype.reset=function(){this.inner._restoreState(this.istate,this.inner.blockSize);this.outer._restoreState(this.ostate,this.outer.blockSize);return this};t.prototype.clean=function(){for(var t=0;t<this.istate.length;t++){this.ostate[t]=this.istate[t]=0}this.inner.clean();this.outer.clean()};t.prototype.update=function(t){this.inner.update(t);return this};t.prototype.finish=function(t){if(this.outer.finished){this.outer.finish(t)}else{this.inner.finish(t);this.outer.update(t,this.digestLength).finish(t)}return this};t.prototype.digest=function(){var t=new Uint8Array(this.digestLength);this.finish(t);return t};return t}();function t(t){var e=(new r).update(t);var i=e.digest();e.clean();return i}function d(t,e){var i=new c(t).update(e);var r=i.digest();i.clean();return r}function v(t,e,i,r){var s=r[0];if(s===0){throw new Error("hkdf: cannot expand more")}e.reset();if(s>1){e.update(t)}if(i){e.update(i)}e.update(r);e.finish(t);r[0]++}e.HMAC=c,e.hash=t,e["default"]=t,e.hmac=d;var p=new Uint8Array(e.digestLength);function i(t,e,i,r){if(e===void 0){e=p}if(r===void 0){r=32}var s=new Uint8Array([1]);var n=d(e,t);var h=new c(n);var a=new Uint8Array(h.digestLength);var f=a.length;var o=new Uint8Array(r);for(var u=0;u<r;u++){if(f===a.length){v(a,h,i,s);f=0}o[u]=a[f++]}h.clean();a.fill(0);s.fill(0);return o}function s(t,e,i,r){var s=new c(t);var n=s.digestLength;var h=new Uint8Array(4);var a=new Uint8Array(n);var f=new Uint8Array(n);var o=new Uint8Array(r);for(var u=0;u*n<r;u++){var d=u+1;h[0]=d>>>24&255;h[1]=d>>>16&255;h[2]=d>>>8&255;h[3]=d>>>0&255;s.reset();s.update(e);s.update(h);s.finish(f);for(var v=0;v<n;v++){a[v]=f[v]}for(var v=2;v<=i;v++){s.reset();s.update(f).finish(f);for(var p=0;p<n;p++){a[p]^=f[p]}}for(var v=0;v<n&&u*n+v<r;v++){o[u*n+v]=a[v]}}for(var u=0;u<n;u++){a[u]=f[u]=0}for(var u=0;u<4;u++){h[u]=0}s.clean();return o}e.hkdf=i,e.pbkdf2=s}(e);var i=e.default;for(var r in e)i[r]=e[r];"object"==typeof module&&"object"==typeof module.exports?module.exports=i:"function"==typeof define&&define.amd?define(function(){return i}):t.sha256=i}(this);