twofish/dist/twofish.min.js

Javascript Twofish implementation.

/*!
 * Twofish (ECB and CBC) javascript implementation v0.1.1
 *
 * Released under the MIT license
 * www.opensource.org/licenses/MIT
 *
 * 2015-02-06
 */


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c=0;4>c;c+=1)b=_(b);for(b^=a,c=0;4>c;c+=1)b=_(b);return b},bb=function(a,b,c){var d=W(b),e=X(b),f=Y(b),g=Z(b),h=c[0]||0,i=c[1]||0,k=c[2]||0,l=c[3]||0,m=0;switch(3&a){case 1:m=V[0][255&j[v][d]^W(h)]^V[1][255&j[A][e]^X(h)]^V[2][255&j[F][f]^Y(h)]^V[3][255&j[K][g]^Z(h)];break;case 0:d=255&j[y][d]^W(l),e=255&j[D][e]^X(l),f=255&j[I][f]^Y(l),g=255&j[N][g]^Z(l);case 3:d=255&j[x][d]^W(k),e=255&j[C][e]^X(k),f=255&j[H][f]^Y(k),g=255&j[M][g]^Z(k);case 2:m=V[0][255&j[v][255&j[w][d]^W(i)]^W(h)]^V[1][255&j[A][255&j[B][e]^X(i)]^X(h)]^V[2][255&j[F][255&j[G][f]^Y(i)]^Y(h)]^V[3][255&j[K][255&j[L][g]^Z(i)]^Z(h)]}return m},cb=function(a,b,c){var d=a[2*$(b,c)]^a[2*$(b,c+1)+1]^a[512+2*$(b,c+2)]^a[512+2*$(b,c+3)+1];return new Uint32Array([d])[0]},db=function(a,b){var c=[],d=0;if(a&&b&&e.isAnArray(a)&&e.isAnArray(b)&&a.length!==b.length)throw"Buffer length must be equal";for(a=new Uint8Array(a),b=new Uint8Array(b),d=0;d<a.length;d+=1)c[d]=255&(a[d]^b[d]);return new Uint8Array(c)},eb=function(a){if(a&&e.isAnArray(a)){var b,c,d,f,g,h,i,k,p,q,s,t,u,z,E,J=a.length,O=[],P=0,Q=J/8,R=r+2*l,S=[],T=[],U=[],$=0,_=[],cb=[];if(8>J||J>8&&16>J||J>16&&24>J||J>24&&32>J){for(P=0;P<a.length+(8-a.length);P+=1)b=a[P],O.push(void 0!==b?b:0);a=O}else if(J>32){for(c=[],P=0;32>P;P+=1)c.push(a[P]);a=c}for(a=new Uint8Array(a),J=a.length,d=0,f=Q-1;4>d&&J>$;d+=1,f-=1)S[d]=255&a[$++]|(255&a[$++])<<8|(255&a[$++])<<16|(255&a[$++])<<24,T[d]=255&a[$++]|(255&a[$++])<<8|(255&a[$++])<<16|(255&a[$++])<<24,U[f]=ab(S[d],T[d]);for(d=g=0;R/2>d;d+=1,g+=m)h=bb(Q,g,S),i=bb(Q,g+n,T),i=i<<8|i>>>24,h+=i,_[2*d]=h,h+=i,_[2*d+1]=h<<o|h>>>32-o;for(t=U[0],u=U[1],z=U[2],E=U[3],d=0;256>d;d+=1)switch(k=p=q=s=d,3&Q){case 1:cb[2*d]=V[0][255&j[v][k]^W(t)],cb[2*d+1]=V[1][255&j[A][p]^X(t)],cb[512+2*d]=V[2][255&j[F][q]^Y(t)],cb[512+2*d+1]=V[3][255&j[K][s]^Z(t)];break;case 0:k=255&j[y][k]^W(E),p=255&j[D][p]^X(E),q=255&j[I][q]^Y(E),s=255&j[N][s]^Z(E);case 3:k=255&j[x][k]^W(z),p=255&j[C][p]^X(z),q=255&j[H][q]^Y(z),s=255&j[M][s]^Z(z);case 2:cb[2*d]=V[0][255&j[v][255&j[w][k]^W(u)]^W(t)],cb[2*d+1]=V[1][255&j[A][255&j[B][p]^X(u)]^X(t)],cb[512+2*d]=V[2][255&j[F][255&j[G][q]^Y(u)]^Y(t)],cb[512+2*d+1]=V[3][255&j[K][255&j[L][s]^Z(u)]^Z(t)]}return[cb,_]}throw"key passed is undefined or not an array"},fb=function(a,b,c){if(a&&c&&e.isAnArray(c)&&e.isAnArray(a)){a=new Uint8Array(a);var d,f,g=c[0],h=c[1],i=255&a[b++]|(255&a[b++])<<8|(255&a[b++])<<16|(255&a[b++])<<24,j=255&a[b++]|(255&a[b++])<<8|(255&a[b++])<<16|(255&a[b++])<<24,k=255&a[b++]|(255&a[b++])<<8|(255&a[b++])<<16|(255&a[b++])<<24,m=255&a[b++]|(255&a[b++])<<8|(255&a[b++])<<16|(255&a[b++])<<24,n=r,o=0;for(i^=h[p],j^=h[p+1],k^=h[p+2],m^=h[p+3],o=0;l>o;o+=2)d=cb(g,i,0),f=cb(g,j,3),k^=d+f+h[n++],k=k>>>1|k<<31,m=m<<1|m>>>31,m^=d+2*f+h[n++],d=cb(g,k,0),f=cb(g,m,3),i^=d+f+h[n++],i=i>>>1|i<<31,j=j<<1|j>>>31,j^=d+2*f+h[n++];return k^=h[q],m^=h[q+1],i^=h[q+2],j^=h[q+3],new Uint8Array([k,k>>>8,k>>>16,k>>>24,m,m>>>8,m>>>16,m>>>24,i,i>>>8,i>>>16,i>>>24,j,j>>>8,j>>>16,j>>>24])}throw"input block is not an array or sessionKey is incorrect"},gb=function(a,b,c){if(a&&c&&e.isAnArray(c)&&e.isAnArray(a)){var d,f,g=c[0],h=c[1],i=255&a[b++]|(255&a[b++])<<8|(255&a[b++])<<16|(255&a[b++])<<24,j=255&a[b++]|(255&a[b++])<<8|(255&a[b++])<<16|(255&a[b++])<<24,k=255&a[b++]|(255&a[b++])<<8|(255&a[b++])<<16|(255&a[b++])<<24,m=255&a[b++]|(255&a[b++])<<8|(255&a[b++])<<16|(255&a[b++])<<24,n=r+2*l-1,o=0;for(i^=h[q],j^=h[q+1],k^=h[q+2],m^=h[q+3],o=0;l>o;o+=2)d=cb(g,i,0),f=cb(g,j,3),m^=d+2*f+h[n--],m=m>>>1|m<<31,k=k<<1|k>>>31,k^=d+f+h[n--],d=cb(g,k,0),f=cb(g,m,3),j^=d+2*f+h[n--],j=j>>>1|j<<31,i=i<<1|i>>>31,i^=d+f+h[n--];return k^=h[p],m^=h[p+1],i^=h[p+2],j^=h[p+3],new Uint8Array([k,k>>>8,k>>>16,k>>>24,m,m>>>8,m>>>16,m>>>24,i,i>>>8,i>>>16,i>>>24,j,j>>>8,j>>>16,j>>>24])}throw"input block is not an array or sessionKey is incorrect"},hb=function(a,b){var c,d,f,g=[];if(!e.isAnArray(a)||!e.isAnArray(b))throw"Inputs must be an array";for(a=new Uint8Array(a),b=new Uint8Array(b),a=eb(a),d=0;d<b.length;d+=16)for(f=fb(b,d,a),c=0;c<f.length;c+=1)g.push(f[c]);return g},ib=function(a,b){var c,d,f,g=[];if(!e.isAnArray(a)||!e.isAnArray(b))throw"Inputs must be an array";for(a=new Uint8Array(a),b=new Uint8Array(b),a=eb(a),d=0;d<b.length;d+=16)for(f=gb(b,d,a),c=0;c<f.length;c+=1)g.push(f[c]);return g},jb=function(a,b){if(!e.isAnArray(a)||!e.isAnArray(b))throw"Inputs must be an array";a=new Uint8Array(a),b=new Uint8Array(b),a=eb(a);for(var c,d,f,h=[],i=b.length/k,j=0,l=[],m=[],n=[],o=g,p=0,q=0;i>p;p+=1){if(l=b.subarray(j,j+k),l.length<k){for(c=[],t=0;k>t;t+=1)d=l[t],c.push(void 0!==d?d:0);l=c}for(m=db(l,o),n=fb(m,0,a),q=j;q<n.length+j;q+=1)f=q-j,void 0!==n[f]&&h.splice(q,0,n[f]);o=n,j+=k}return h},kb=function(a,b){if(!e.isAnArray(a)||!e.isAnArray(b))throw"Inputs must be an array";a=new Uint8Array(a),b=new Uint8Array(b),a=eb(a);for(var c,d,f,h=[],i=b.length/k,j=0,l=[],m=[],n=[],o=g,p=0,q=0;i>p;p+=1){if(l=b.subarray(j,j+k),l.length<k){for(c=[],t=0;k>t;t+=1)d=l[t],c.push(void 0!==d?d:0);l=c}for(m=gb(l,0,a),n=db(m,o),q=j;q<n.length+j;q+=1)f=q-j,void 0!==n[f]&&h.splice(q,0,n[f]);n=[],o=l,j+=k}return h};if(a){if(a&&e.isAnArray(a)&&a.length===k)g=new Uint8Array(a);else if(a&&e.isAnArray(a)&&a.length<k){for(d=a.length,t=0;k-d>t;t+=1)a.push(f.nextRange(0,256));g=new Uint8Array(a)}else if(a&&e.isAnArray(a)&&a.length>k)g=new Uint8Array(a.slice(0,k));else if(!a||!e.isAnArray(a)||a.length<16||a.length>16)throw"Initlializing vector incorrect"}else for(s=0;k>s;s+=1)g.push(f.nextRange(0,256));return g=new Uint8Array(g),{equalsArray:e.areEqual,encrypt:hb,decrypt:ib,encryptCBC:jb,decryptCBC:kb}}}("undefined"==typeof exports?this:exports);
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