sha256-uint8array/dist/sha256-uint8array.min.js

Fast SHA-256 digest hash based on Uint8Array, pure JavaScript.

var SHA256="undefined"!=typeof exports?exports:{};!function(t){var r=[1116352408,1899447441,-1245643825,-373957723,961987163,1508970993,-1841331548,-1424204075,-670586216,310598401,607225278,1426881987,1925078388,-2132889090,-1680079193,-1046744716,-459576895,-272742522,264347078,604807628,770255983,1249150122,1555081692,1996064986,-1740746414,-1473132947,-1341970488,-1084653625,-958395405,-710438585,113926993,338241895,666307205,773529912,1294757372,1396182291,1695183700,1986661051,-2117940946,-1838011259,-1564481375,-1474664885,-1035236496,-949202525,-778901479,-694614492,-200395387,275423344,430227734,506948616,659060556,883997877,958139571,1322822218,1537002063,1747873779,1955562222,2024104815,-2067236844,-1933114872,-1866530822,-1538233109,-1090935817,-965641998],i={sha256:1};t.createHash=function(t){if(t&&!i[t]&&!i[t.toLowerCase()])throw new Error("Digest method not supported");return new n};var n=function(){function t(){this.A=1779033703,this.B=-1150833019,this.C=1013904242,this.D=-1521486534,this.E=1359893119,this.F=-1694144372,this.G=528734635,this.H=1541459225,this.t=0,this.i=0,(!s||e>=8e3)&&(s=new ArrayBuffer(8e3),e=0),this.h=new Uint8Array(s,e,80),this.o=new Int32Array(s,e,20),e+=80}return t.prototype.update=function(t){if("string"==typeof t)return this.u(t);if(null==t)throw new TypeError("Invalid type: "+typeof t);var r=t.byteOffset,i=t.byteLength,n=i/64|0,s=0;if(n&&!(3&r)&&!(this.t%64)){for(var h=new Int32Array(t.buffer,r,16*n);n--;)this.v(h,s>>2),s+=64;this.t+=s}if(1!==t.BYTES_PER_ELEMENT&&t.buffer){var e=new Uint8Array(t.buffer,r+s,i-s);return this.p(e)}return s===i?this:this.p(t,s)},t.prototype.p=function(t,r){var i=this.h,n=this.o,s=t.length;for(r|=0;r<s;){for(var h=this.t%64,e=h;r<s&&e<64;)i[e++]=t[r++];e>=64&&this.v(n),this.t+=e-h}return this},t.prototype.u=function(t){for(var r=this.h,i=this.o,n=t.length,s=this.i,h=0;h<n;){for(var e=this.t%64,f=e;h<n&&f<64;){var o=0|t.charCodeAt(h++);o<128?r[f++]=o:o<2048?(r[f++]=192|o>>>6,r[f++]=128|63&o):o<55296||o>57343?(r[f++]=224|o>>>12,r[f++]=128|o>>>6&63,r[f++]=128|63&o):s?(o=((1023&s)<<10)+(1023&o)+65536,r[f++]=240|o>>>18,r[f++]=128|o>>>12&63,r[f++]=128|o>>>6&63,r[f++]=128|63&o,s=0):s=o}f>=64&&(this.v(i),i[0]=i[16]),this.t+=f-e}return this.i=s,this},t.prototype.v=function(t,i){var n=this,s=n.A,e=n.B,f=n.C,A=n.D,p=n.E,d=n.F,I=n.G,U=n.H,l=0;for(i|=0;l<16;)h[l++]=o(t[i++]);for(l=16;l<64;l++)h[l]=y(h[l-2])+h[l-7]+w(h[l-15])+h[l-16]|0;for(l=0;l<64;l++){var x=U+v(p)+u(p,d,I)+r[l]+h[l]|0,g=c(s)+a(s,e,f)|0;U=I,I=d,d=p,p=A+x|0,A=f,f=e,e=s,s=x+g|0}this.A=s+this.A|0,this.B=e+this.B|0,this.C=f+this.C|0,this.D=A+this.D|0,this.E=p+this.E|0,this.F=d+this.F|0,this.G=I+this.G|0,this.H=U+this.H|0},t.prototype.digest=function(t){var r=this.h,i=this.o,n=this.t%64|0;for(r[n++]=128;3&n;)r[n++]=0;if((n>>=2)>14){for(;n<16;)i[n++]=0;n=0,this.v(i)}for(;n<16;)i[n++]=0;var s=8*this.t,h=(4294967295&s)>>>0,e=(s-h)/4294967296;return e&&(i[14]=o(e)),h&&(i[15]=o(h)),this.v(i),"hex"===t?this.I():this.U()},t.prototype.I=function(){var t=this,r=t.A,i=t.B,n=t.C,s=t.D,h=t.E,e=t.F,o=t.G,u=t.H;return f(r)+f(i)+f(n)+f(s)+f(h)+f(e)+f(o)+f(u)},t.prototype.U=function(){var t=this,r=t.A,i=t.B,n=t.C,s=t.D,h=t.E,e=t.F,f=t.G,u=t.H,a=t.h,c=t.o;return c[0]=o(r),c[1]=o(i),c[2]=o(n),c[3]=o(s),c[4]=o(h),c[5]=o(e),c[6]=o(f),c[7]=o(u),a.slice(0,32)},t}();t.Hash=n;var s,h=new Int32Array(64),e=0,f=function(t){return(t+4294967296).toString(16).substr(-8)},o=254===new Uint8Array(new Uint16Array([65279]).buffer)[0]?function(t){return t}:function(t){return t<<24&4278190080|t<<8&16711680|t>>8&65280|t>>24&255},u=function(t,r,i){return i^t&(r^i)},a=function(t,r,i){return t&r|i&(t|r)},c=function(t){return(t>>>2|t<<30)^(t>>>13|t<<19)^(t>>>22|t<<10)},v=function(t){return(t>>>6|t<<26)^(t>>>11|t<<21)^(t>>>25|t<<7)},w=function(t){return(t>>>7|t<<25)^(t>>>18|t<<14)^t>>>3},y=function(t){return(t>>>17|t<<15)^(t>>>19|t<<13)^t>>>10}}(SHA256);