// |jit-test| slow; // This test times out in rooting analyis builds, and so is marked slow so that // it's not run as part of the rooting analysis tests on tinderbox.
/* * Copyright (c) 2003-2005 Tom Wu * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. * * IN NO EVENT SHALL TOM WU BE LIABLE FOR ANY SPECIAL, INCIDENTAL, * INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF * THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * In addition, the following condition applies: * * All redistributions must retain an intact copy of this copyright notice * and disclaimer.
*/
// The code has been adapted for use as a benchmark by Google. //var Crypto = new BenchmarkSuite('Crypto', 203037, [ // new Benchmark("Encrypt", encrypt), // new Benchmark("Decrypt", decrypt) //]);
// Bits per digit var dbits; var BI_DB; var BI_DM; var BI_DV;
var BI_FP; var BI_FV; var BI_F1; var BI_F2;
// JavaScript engine analysis var canary = 0xdeadbeefcafe; var j_lm = ((canary&0xffffff)==0xefcafe);
// This is the best random number generator available to mankind ;) var MyMath = {
curr: 0,
random: function() { this.curr = this.curr + 1; returnthis.curr;
},
};
// (public) Constructor function BigInteger(a,b,c) { this.array = new Array(); if(a != null) if("number" == typeof a) this.fromNumber(a,b,c); elseif(b == null && "string" != typeof a) this.fromString(a,256); elsethis.fromString(a,b);
}
// am: Compute w_j += (x*this_i), propagate carries, // c is initial carry, returns final carry. // c < 3*dvalue, x < 2*dvalue, this_i < dvalue // We need to select the fastest one that works in this environment.
// am1: use a single mult and divide to get the high bits, // max digit bits should be 26 because // max internal value = 2*dvalue^2-2*dvalue (< 2^53) function am1(i,x,w,j,c,n) { var this_array = this.array; var w_array = w.array; while(--n >= 0) { var v = x*this_array[i++]+w_array[j]+c;
c = Math.floor(v/0x4000000);
w_array[j++] = v&0x3ffffff;
} return c;
}
// am2 avoids a big mult-and-extract completely. // Max digit bits should be <= 30 because we do bitwise ops // on values up to 2*hdvalue^2-hdvalue-1 (< 2^31) function am2(i,x,w,j,c,n) { var this_array = this.array; var w_array = w.array; var xl = x&0x7fff, xh = x>>15; while(--n >= 0) { var l = this_array[i]&0x7fff; var h = this_array[i++]>>15; var m = xh*l+h*xl;
l = xl*l+((m&0x7fff)<<15)+w_array[j]+(c&0x3fffffff);
c = (l>>>30)+(m>>>15)+xh*h+(c>>>30);
w_array[j++] = l&0x3fffffff;
} return c;
}
// Alternately, set max digit bits to 28 since some // browsers slow down when dealing with 32-bit numbers. function am3(i,x,w,j,c,n) { var this_array = this.array; var w_array = w.array;
var xl = x&0x3fff, xh = x>>14; while(--n >= 0) { var l = this_array[i]&0x3fff; var h = this_array[i++]>>14; var m = xh*l+h*xl;
l = xl*l+((m&0x3fff)<<14)+w_array[j]+c;
c = (l>>28)+(m>>14)+xh*h;
w_array[j++] = l&0xfffffff;
} return c;
}
// This is tailored to VMs with 2-bit tagging. It makes sure // that all the computations stay within the 29 bits available. function am4(i,x,w,j,c,n) { var this_array = this.array; var w_array = w.array;
var xl = x&0x1fff, xh = x>>13; while(--n >= 0) { var l = this_array[i]&0x1fff; var h = this_array[i++]>>13; var m = xh*l+h*xl;
l = xl*l+((m&0x1fff)<<13)+w_array[j]+c;
c = (l>>26)+(m>>13)+xh*h;
w_array[j++] = l&0x3ffffff;
} return c;
}
// am3/28 is best for SM, Rhino, but am4/26 is best for v8. // Kestrel (Opera 9.5) gets its best result with am4/26. // IE7 does 9% better with am3/28 than with am4/26. // Firefox (SM) gets 10% faster with am3/28 than with am4/26.
function int2char(n) { return BI_RM.charAt(n); } function intAt(s,i) { var c = BI_RC[s.charCodeAt(i)]; return (c==null)?-1:c;
}
// (protected) copy this to r function bnpCopyTo(r) { var this_array = this.array; var r_array = r.array;
for(var i = this.t-1; i >= 0; --i) r_array[i] = this_array[i];
r.t = this.t;
r.s = this.s;
}
// (protected) set from integer value x, -DV <= x < DV function bnpFromInt(x) { var this_array = this.array; this.t = 1; this.s = (x<0)?-1:0; if(x > 0) this_array[0] = x; elseif(x < -1) this_array[0] = x+DV; elsethis.t = 0;
}
// return bigint initialized to value function nbv(i) { var r = nbi(); r.fromInt(i); return r; }
// (protected) set from string and radix function bnpFromString(s,b) { var this_array = this.array; var k; if(b == 16) k = 4; elseif(b == 8) k = 3; elseif(b == 256) k = 8; // byte array elseif(b == 2) k = 1; elseif(b == 32) k = 5; elseif(b == 4) k = 2; else { this.fromRadix(s,b); return; } this.t = 0; this.s = 0; var i = s.length, mi = false, sh = 0; while(--i >= 0) { var x = (k==8)?s[i]&0xff:intAt(s,i); if(x < 0) { if(s.charAt(i) == "-") mi = true; continue;
}
mi = false; if(sh == 0)
this_array[this.t++] = x; elseif(sh+k > BI_DB) {
this_array[this.t-1] |= (x&((1<<(BI_DB-sh))-1))<<sh;
this_array[this.t++] = (x>>(BI_DB-sh));
} else
this_array[this.t-1] |= x<<sh;
sh += k; if(sh >= BI_DB) sh -= BI_DB;
} if(k == 8 && (s[0]&0x80) != 0) { this.s = -1; if(sh > 0) this_array[this.t-1] |= ((1<<(BI_DB-sh))-1)<<sh;
} this.clamp(); if(mi) BigInteger.ZERO.subTo(this,this);
}
// (protected) clamp off excess high words function bnpClamp() { var this_array = this.array; var c = this.s&BI_DM; while(this.t > 0 && this_array[this.t-1] == c) --this.t;
}
// (public) return string representation in given radix function bnToString(b) { var this_array = this.array; if(this.s < 0) return"-"+this.negate().toString(b); var k; if(b == 16) k = 4; elseif(b == 8) k = 3; elseif(b == 2) k = 1; elseif(b == 32) k = 5; elseif(b == 4) k = 2; elsereturnthis.toRadix(b); var km = (1<<k)-1, d, m = false, r = "", i = this.t; var p = BI_DB-(i*BI_DB)%k; if(i-- > 0) { if(p < BI_DB && (d = this_array[i]>>p) > 0) { m = true; r = int2char(d); } while(i >= 0) { if(p < k) {
d = (this_array[i]&((1<<p)-1))<<(k-p);
d |= this_array[--i]>>(p+=BI_DB-k);
} else {
d = (this_array[i]>>(p-=k))&km; if(p <= 0) { p += BI_DB; --i; }
} if(d > 0) m = true; if(m) r += int2char(d);
}
} return m?r:"0";
}
// (public) -this function bnNegate() { var r = nbi(); BigInteger.ZERO.subTo(this,r); return r; }
// (public) |this| function bnAbs() { return (this.s<0)?this.negate():this; }
// (public) return + if this > a, - if this < a, 0 if equal function bnCompareTo(a) { var this_array = this.array; var a_array = a.array;
var r = this.s-a.s; if(r != 0) return r; var i = this.t;
r = i-a.t; if(r != 0) return r; while(--i >= 0) if((r=this_array[i]-a_array[i]) != 0) return r; return 0;
}
// returns bit length of the integer x function nbits(x) { var r = 1, t; if((t=x>>>16) != 0) { x = t; r += 16; } if((t=x>>8) != 0) { x = t; r += 8; } if((t=x>>4) != 0) { x = t; r += 4; } if((t=x>>2) != 0) { x = t; r += 2; } if((t=x>>1) != 0) { x = t; r += 1; } return r;
}
// (public) return the number of bits in "this" function bnBitLength() { var this_array = this.array; if(this.t <= 0) return 0; return BI_DB*(this.t-1)+nbits(this_array[this.t-1]^(this.s&BI_DM));
}
// (protected) r = this << n*DB function bnpDLShiftTo(n,r) { var this_array = this.array; var r_array = r.array; var i; for(i = this.t-1; i >= 0; --i) r_array[i+n] = this_array[i]; for(i = n-1; i >= 0; --i) r_array[i] = 0;
r.t = this.t+n;
r.s = this.s;
}
// (protected) r = this >> n*DB function bnpDRShiftTo(n,r) { var this_array = this.array; var r_array = r.array; for(var i = n; i < this.t; ++i) r_array[i-n] = this_array[i];
r.t = Math.max(this.t-n,0);
r.s = this.s;
}
// (protected) r = this << n function bnpLShiftTo(n,r) { var this_array = this.array; var r_array = r.array; var bs = n%BI_DB; var cbs = BI_DB-bs; var bm = (1<<cbs)-1; var ds = Math.floor(n/BI_DB), c = (this.s<<bs)&BI_DM, i; for(i = this.t-1; i >= 0; --i) {
r_array[i+ds+1] = (this_array[i]>>cbs)|c;
c = (this_array[i]&bm)<<bs;
} for(i = ds-1; i >= 0; --i) r_array[i] = 0;
r_array[ds] = c;
r.t = this.t+ds+1;
r.s = this.s;
r.clamp();
}
// (protected) r = this >> n function bnpRShiftTo(n,r) { var this_array = this.array; var r_array = r.array;
r.s = this.s; var ds = Math.floor(n/BI_DB); if(ds >= this.t) { r.t = 0; return; } var bs = n%BI_DB; var cbs = BI_DB-bs; var bm = (1<<bs)-1;
r_array[0] = this_array[ds]>>bs; for(var i = ds+1; i < this.t; ++i) {
r_array[i-ds-1] |= (this_array[i]&bm)<<cbs;
r_array[i-ds] = this_array[i]>>bs;
} if(bs > 0) r_array[this.t-ds-1] |= (this.s&bm)<<cbs;
r.t = this.t-ds;
r.clamp();
}
// (protected) r = this - a function bnpSubTo(a,r) { var this_array = this.array; var r_array = r.array; var a_array = a.array; var i = 0, c = 0, m = Math.min(a.t,this.t); while(i < m) {
c += this_array[i]-a_array[i];
r_array[i++] = c&BI_DM;
c >>= BI_DB;
} if(a.t < this.t) {
c -= a.s; while(i < this.t) {
c += this_array[i];
r_array[i++] = c&BI_DM;
c >>= BI_DB;
}
c += this.s;
} else {
c += this.s; while(i < a.t) {
c -= a_array[i];
r_array[i++] = c&BI_DM;
c >>= BI_DB;
}
c -= a.s;
}
r.s = (c<0)?-1:0; if(c < -1) r_array[i++] = BI_DV+c; elseif(c > 0) r_array[i++] = c;
r.t = i;
r.clamp();
}
// (protected) r = this * a, r != this,a (HAC 14.12) // "this" should be the larger one if appropriate. function bnpMultiplyTo(a,r) { var this_array = this.array; var r_array = r.array; var x = this.abs(), y = a.abs(); var y_array = y.array;
// (protected) r = this^2, r != this (HAC 14.16) function bnpSquareTo(r) { var x = this.abs(); var x_array = x.array; var r_array = r.array;
var i = r.t = 2*x.t; while(--i >= 0) r_array[i] = 0; for(i = 0; i < x.t-1; ++i) { var c = x.am(i,x_array[i],r,2*i,0,1); if((r_array[i+x.t]+=x.am(i+1,2*x_array[i],r,2*i+1,c,x.t-i-1)) >= BI_DV) {
r_array[i+x.t] -= BI_DV;
r_array[i+x.t+1] = 1;
}
} if(r.t > 0) r_array[r.t-1] += x.am(i,x_array[i],r,2*i,0,1);
r.s = 0;
r.clamp();
}
// (protected) divide this by m, quotient and remainder to q, r (HAC 14.20) // r != q, this != m. q or r may be null. function bnpDivRemTo(m,q,r) { var pm = m.abs(); if(pm.t <= 0) return; var pt = this.abs(); if(pt.t < pm.t) { if(q != null) q.fromInt(0); if(r != null) this.copyTo(r); return;
} if(r == null) r = nbi(); var y = nbi(), ts = this.s, ms = m.s; var pm_array = pm.array; var nsh = BI_DB-nbits(pm_array[pm.t-1]); // normalize modulus if(nsh > 0) { pm.lShiftTo(nsh,y); pt.lShiftTo(nsh,r); } else { pm.copyTo(y); pt.copyTo(r); } var ys = y.t;
var y_array = y.array; var y0 = y_array[ys-1]; if(y0 == 0) return; var yt = y0*(1<<BI_F1)+((ys>1)?y_array[ys-2]>>BI_F2:0); var d1 = BI_FV/yt, d2 = (1<<BI_F1)/yt, e = 1<<BI_F2; var i = r.t, j = i-ys, t = (q==null)?nbi():q;
y.dlShiftTo(j,t);
var r_array = r.array; if(r.compareTo(t) >= 0) {
r_array[r.t++] = 1;
r.subTo(t,r);
}
BigInteger.ONE.dlShiftTo(ys,t);
t.subTo(y,y); // "negative" y so we can replace sub with am later while(y.t < ys) y_array[y.t++] = 0; while(--j >= 0) { // Estimate quotient digit var qd = (r_array[--i]==y0)?BI_DM:Math.floor(r_array[i]*d1+(r_array[i-1]+e)*d2); if((r_array[i]+=y.am(0,qd,r,j,0,ys)) < qd) { // Try it out
y.dlShiftTo(j,t);
r.subTo(t,r); while(r_array[i] < --qd) r.subTo(t,r);
}
} if(q != null) {
r.drShiftTo(ys,q); if(ts != ms) BigInteger.ZERO.subTo(q,q);
}
r.t = ys;
r.clamp(); if(nsh > 0) r.rShiftTo(nsh,r); // Denormalize remainder if(ts < 0) BigInteger.ZERO.subTo(r,r);
}
// (public) this mod a function bnMod(a) { var r = nbi(); this.abs().divRemTo(a,null,r); if(this.s < 0 && r.compareTo(BigInteger.ZERO) > 0) a.subTo(r,r); return r;
}
// Modular reduction using "classic" algorithm function Classic(m) { this.m = m; } function cConvert(x) { if(x.s < 0 || x.compareTo(this.m) >= 0) return x.mod(this.m); elsereturn x;
} function cRevert(x) { return x; } function cReduce(x) { x.divRemTo(this.m,null,x); } function cMulTo(x,y,r) { x.multiplyTo(y,r); this.reduce(r); } function cSqrTo(x,r) { x.squareTo(r); this.reduce(r); }
// (protected) return "-1/this % 2^DB"; useful for Mont. reduction // justification: // xy == 1 (mod m) // xy = 1+km // xy(2-xy) = (1+km)(1-km) // x[y(2-xy)] = 1-k^2m^2 // x[y(2-xy)] == 1 (mod m^2) // if y is 1/x mod m, then y(2-xy) is 1/x mod m^2 // should reduce x and y(2-xy) by m^2 at each step to keep size bounded. // JS multiply "overflows" differently from C/C++, so care is needed here. function bnpInvDigit() { var this_array = this.array; if(this.t < 1) return 0; var x = this_array[0]; if((x&1) == 0) return 0; var y = x&3; // y == 1/x mod 2^2
y = (y*(2-(x&0xf)*y))&0xf; // y == 1/x mod 2^4
y = (y*(2-(x&0xff)*y))&0xff; // y == 1/x mod 2^8
y = (y*(2-(((x&0xffff)*y)&0xffff)))&0xffff; // y == 1/x mod 2^16 // last step - calculate inverse mod DV directly; // assumes 16 < DB <= 32 and assumes ability to handle 48-bit ints
y = (y*(2-x*y%BI_DV))%BI_DV; // y == 1/x mod 2^dbits // we really want the negative inverse, and -DV < y < DV return (y>0)?BI_DV-y:-y;
}
// xR mod m function montConvert(x) { var r = nbi();
x.abs().dlShiftTo(this.m.t,r);
r.divRemTo(this.m,null,r); if(x.s < 0 && r.compareTo(BigInteger.ZERO) > 0) this.m.subTo(r,r); return r;
}
// x/R mod m function montRevert(x) { var r = nbi();
x.copyTo(r); this.reduce(r); return r;
}
// x = x/R mod m (HAC 14.32) function montReduce(x) { var x_array = x.array; while(x.t <= this.mt2) // pad x so am has enough room later
x_array[x.t++] = 0; for(var i = 0; i < this.m.t; ++i) { // faster way of calculating u0 = x[i]*mp mod DV var j = x_array[i]&0x7fff; var u0 = (j*this.mpl+(((j*this.mph+(x_array[i]>>15)*this.mpl)&this.um)<<15))&BI_DM; // use am to combine the multiply-shift-add into one call
j = i+this.m.t;
x_array[j] += this.m.am(0,u0,x,i,0,this.m.t); // propagate carry while(x_array[j] >= BI_DV) { x_array[j] -= BI_DV; x_array[++j]++; }
}
x.clamp();
x.drShiftTo(this.m.t,x); if(x.compareTo(this.m) >= 0) x.subTo(this.m,x);
}
// r = "x^2/R mod m"; x != r function montSqrTo(x,r) { x.squareTo(r); this.reduce(r); }
// r = "xy/R mod m"; x,y != r function montMulTo(x,y,r) { x.multiplyTo(y,r); this.reduce(r); }
// (protected) true iff this is even function bnpIsEven() { var this_array = this.array; return ((this.t>0)?(this_array[0]&1):this.s) == 0;
}
// (protected) this^e, e < 2^32, doing sqr and mul with "r" (HAC 14.79) function bnpExp(e,z) { if(e > 0xffffffff || e < 1) return BigInteger.ONE; var r = nbi(), r2 = nbi(), g = z.convert(this), i = nbits(e)-1;
g.copyTo(r); while(--i >= 0) {
z.sqrTo(r,r2); if((e&(1<<i)) > 0) z.mulTo(r2,g,r); else { var t = r; r = r2; r2 = t; }
} return z.revert(r);
}
// (public) this^e % m, 0 <= e < 2^32 function bnModPowInt(e,m) { var z; if(e < 256 || m.isEven()) z = new Classic(m); else z = new Montgomery(m); returnthis.exp(e,z);
}
// "constants"
BigInteger.ZERO = nbv(0);
BigInteger.ONE = nbv(1); // Copyright (c) 2005 Tom Wu // All Rights Reserved. // See "LICENSE" for details.
// Extended JavaScript BN functions, required for RSA private ops.
// (public) function bnClone() { var r = nbi(); this.copyTo(r); return r; }
// (public) return value as integer function bnIntValue() { var this_array = this.array; if(this.s < 0) { if(this.t == 1) return this_array[0]-BI_DV; elseif(this.t == 0) return -1;
} elseif(this.t == 1) return this_array[0]; elseif(this.t == 0) return 0; // assumes 16 < DB < 32 return ((this_array[1]&((1<<(32-BI_DB))-1))<<BI_DB)|this_array[0];
}
// (public) return value as byte function bnByteValue() { var this_array = this.array; return (this.t==0)?this.s:(this_array[0]<<24)>>24;
}
// (public) return value as short (assumes DB>=16) function bnShortValue() { var this_array = this.array; return (this.t==0)?this.s:(this_array[0]<<16)>>16;
}
// (protected) return x s.t. r^x < DV function bnpChunkSize(r) { return Math.floor(Math.LN2*BI_DB/Math.log(r)); }
// (public) 0 if this == 0, 1 if this > 0 function bnSigNum() { var this_array = this.array; if(this.s < 0) return -1; elseif(this.t <= 0 || (this.t == 1 && this_array[0] <= 0)) return 0; elsereturn 1;
}
// (protected) convert to radix string function bnpToRadix(b) { if(b == null) b = 10; if(this.signum() == 0 || b < 2 || b > 36) return"0"; var cs = this.chunkSize(b); var a = Math.pow(b,cs); var d = nbv(a), y = nbi(), z = nbi(), r = ""; this.divRemTo(d,y,z); while(y.signum() > 0) {
r = (a+z.intValue()).toString(b).substr(1) + r;
y.divRemTo(d,y,z);
} return z.intValue().toString(b) + r;
}
// (protected) convert from radix string function bnpFromRadix(s,b) { this.fromInt(0); if(b == null) b = 10; var cs = this.chunkSize(b); var d = Math.pow(b,cs), mi = false, j = 0, w = 0; for(var i = 0; i < s.length; ++i) { var x = intAt(s,i); if(x < 0) { if(s.charAt(i) == "-" && this.signum() == 0) mi = true; continue;
}
w = b*w+x; if(++j >= cs) { this.dMultiply(d); this.dAddOffset(w,0);
j = 0;
w = 0;
}
} if(j > 0) { this.dMultiply(Math.pow(b,j)); this.dAddOffset(w,0);
} if(mi) BigInteger.ZERO.subTo(this,this);
}
// (protected) alternate constructor function bnpFromNumber(a,b,c) { if("number" == typeof b) { // new BigInteger(int,int,RNG) if(a < 2) this.fromInt(1); else { this.fromNumber(a,c); if(!this.testBit(a-1)) // force MSB set this.bitwiseTo(BigInteger.ONE.shiftLeft(a-1),op_or,this); if(this.isEven()) this.dAddOffset(1,0); // force odd while(!this.isProbablePrime(b)) { this.dAddOffset(2,0); if(this.bitLength() > a) this.subTo(BigInteger.ONE.shiftLeft(a-1),this);
}
}
} else { // new BigInteger(int,RNG) var x = new Array(), t = a&7;
x.length = (a>>3)+1;
b.nextBytes(x); if(t > 0) x[0] &= ((1<<t)-1); else x[0] = 0; this.fromString(x,256);
}
}
// (public) convert to bigendian byte array function bnToByteArray() { var this_array = this.array; var i = this.t, r = new Array();
r[0] = this.s; var p = BI_DB-(i*BI_DB)%8, d, k = 0; if(i-- > 0) { if(p < BI_DB && (d = this_array[i]>>p) != (this.s&BI_DM)>>p)
r[k++] = d|(this.s<<(BI_DB-p)); while(i >= 0) { if(p < 8) {
d = (this_array[i]&((1<<p)-1))<<(8-p);
d |= this_array[--i]>>(p+=BI_DB-8);
} else {
d = (this_array[i]>>(p-=8))&0xff; if(p <= 0) { p += BI_DB; --i; }
} if((d&0x80) != 0) d |= -256; if(k == 0 && (this.s&0x80) != (d&0x80)) ++k; if(k > 0 || d != this.s) r[k++] = d;
}
} return r;
}
function bnEquals(a) { return(this.compareTo(a)==0); } function bnMin(a) { return(this.compareTo(a)<0)?this:a; } function bnMax(a) { return(this.compareTo(a)>0)?this:a; }
// (protected) r = this op a (bitwise) function bnpBitwiseTo(a,op,r) { var this_array = this.array; var a_array = a.array; var r_array = r.array; var i, f, m = Math.min(a.t,this.t); for(i = 0; i < m; ++i) r_array[i] = op(this_array[i],a_array[i]); if(a.t < this.t) {
f = a.s&BI_DM; for(i = m; i < this.t; ++i) r_array[i] = op(this_array[i],f);
r.t = this.t;
} else {
f = this.s&BI_DM; for(i = m; i < a.t; ++i) r_array[i] = op(f,a_array[i]);
r.t = a.t;
}
r.s = op(this.s,a.s);
r.clamp();
}
// (public) this & a function op_and(x,y) { return x&y; } function bnAnd(a) { var r = nbi(); this.bitwiseTo(a,op_and,r); return r; }
// (public) this | a function op_or(x,y) { return x|y; } function bnOr(a) { var r = nbi(); this.bitwiseTo(a,op_or,r); return r; }
// (public) this ^ a function op_xor(x,y) { return x^y; } function bnXor(a) { var r = nbi(); this.bitwiseTo(a,op_xor,r); return r; }
// (public) this & ~a function op_andnot(x,y) { return x&~y; } function bnAndNot(a) { var r = nbi(); this.bitwiseTo(a,op_andnot,r); return r; }
// (public) ~this function bnNot() { var this_array = this.array; var r = nbi(); var r_array = r.array;
for(var i = 0; i < this.t; ++i) r_array[i] = BI_DM&~this_array[i];
r.t = this.t;
r.s = ~this.s; return r;
}
// (public) this << n function bnShiftLeft(n) { var r = nbi(); if(n < 0) this.rShiftTo(-n,r); elsethis.lShiftTo(n,r); return r;
}
// (public) this >> n function bnShiftRight(n) { var r = nbi(); if(n < 0) this.lShiftTo(-n,r); elsethis.rShiftTo(n,r); return r;
}
// return index of lowest 1-bit in x, x < 2^31 function lbit(x) { if(x == 0) return -1; var r = 0; if((x&0xffff) == 0) { x >>= 16; r += 16; } if((x&0xff) == 0) { x >>= 8; r += 8; } if((x&0xf) == 0) { x >>= 4; r += 4; } if((x&3) == 0) { x >>= 2; r += 2; } if((x&1) == 0) ++r; return r;
}
// (public) returns index of lowest 1-bit (or -1 if none) function bnGetLowestSetBit() { var this_array = this.array; for(var i = 0; i < this.t; ++i) if(this_array[i] != 0) return i*BI_DB+lbit(this_array[i]); if(this.s < 0) returnthis.t*BI_DB; return -1;
}
// return number of 1 bits in x function cbit(x) { var r = 0; while(x != 0) { x &= x-1; ++r; } return r;
}
// (public) return number of set bits function bnBitCount() { var r = 0, x = this.s&BI_DM; for(var i = 0; i < this.t; ++i) r += cbit(this_array[i]^x); return r;
}
// (public) true iff nth bit is set function bnTestBit(n) { var this_array = this.array; var j = Math.floor(n/BI_DB); if(j >= this.t) return(this.s!=0); return((this_array[j]&(1<<(n%BI_DB)))!=0);
}
// (protected) this op (1<<n) function bnpChangeBit(n,op) { var r = BigInteger.ONE.shiftLeft(n); this.bitwiseTo(r,op,r); return r;
}
// (public) this | (1<<n) function bnSetBit(n) { returnthis.changeBit(n,op_or); }
// (public) this & ~(1<<n) function bnClearBit(n) { returnthis.changeBit(n,op_andnot); }
// (public) this ^ (1<<n) function bnFlipBit(n) { returnthis.changeBit(n,op_xor); }
// (protected) r = this + a function bnpAddTo(a,r) { var this_array = this.array; var a_array = a.array; var r_array = r.array; var i = 0, c = 0, m = Math.min(a.t,this.t); while(i < m) {
c += this_array[i]+a_array[i];
r_array[i++] = c&BI_DM;
c >>= BI_DB;
} if(a.t < this.t) {
c += a.s; while(i < this.t) {
c += this_array[i];
r_array[i++] = c&BI_DM;
c >>= BI_DB;
}
c += this.s;
} else {
c += this.s; while(i < a.t) {
c += a_array[i];
r_array[i++] = c&BI_DM;
c >>= BI_DB;
}
c += a.s;
}
r.s = (c<0)?-1:0; if(c > 0) r_array[i++] = c; elseif(c < -1) r_array[i++] = BI_DV+c;
r.t = i;
r.clamp();
}
// (public) this + a function bnAdd(a) { var r = nbi(); this.addTo(a,r); return r; }
// (public) this - a function bnSubtract(a) { var r = nbi(); this.subTo(a,r); return r; }
// (public) this * a function bnMultiply(a) { var r = nbi(); this.multiplyTo(a,r); return r; }
// (public) this / a function bnDivide(a) { var r = nbi(); this.divRemTo(a,r,null); return r; }
// (public) this % a function bnRemainder(a) { var r = nbi(); this.divRemTo(a,null,r); return r; }
// (public) [this/a,this%a] function bnDivideAndRemainder(a) { var q = nbi(), r = nbi(); this.divRemTo(a,q,r); returnnew Array(q,r);
}
// (protected) this *= n, this >= 0, 1 < n < DV function bnpDMultiply(n) { var this_array = this.array;
this_array[this.t] = this.am(0,n-1,this,0,0,this.t);
++this.t; this.clamp();
}
// (protected) this += n << w words, this >= 0 function bnpDAddOffset(n,w) { var this_array = this.array; while(this.t <= w) this_array[this.t++] = 0;
this_array[w] += n; while(this_array[w] >= BI_DV) {
this_array[w] -= BI_DV; if(++w >= this.t) this_array[this.t++] = 0;
++this_array[w];
}
}
// A "null" reducer function NullExp() {} function nNop(x) { return x; } function nMulTo(x,y,r) { x.multiplyTo(y,r); } function nSqrTo(x,r) { x.squareTo(r); }
// (public) this^e function bnPow(e) { returnthis.exp(e,new NullExp()); }
// (protected) r = lower n words of "this * a", a.t <= n // "this" should be the larger one if appropriate. function bnpMultiplyLowerTo(a,n,r) { var r_array = r.array; var a_array = a.array; var i = Math.min(this.t+a.t,n);
r.s = 0; // assumes a,this >= 0
r.t = i; while(i > 0) r_array[--i] = 0; var j; for(j = r.t-this.t; i < j; ++i) r_array[i+this.t] = this.am(0,a_array[i],r,i,0,this.t); for(j = Math.min(a.t,n); i < j; ++i) this.am(0,a_array[i],r,i,0,n-i);
r.clamp();
}
// (protected) r = "this * a" without lower n words, n > 0 // "this" should be the larger one if appropriate. function bnpMultiplyUpperTo(a,n,r) { var r_array = r.array; var a_array = a.array;
--n; var i = r.t = this.t+a.t-n;
r.s = 0; // assumes a,this >= 0 while(--i >= 0) r_array[i] = 0; for(i = Math.max(n-this.t,0); i < a.t; ++i)
r_array[this.t+i-n] = this.am(n-i,a_array[i],r,0,0,this.t+i-n);
r.clamp();
r.drShiftTo(1,r);
}
// (public) this^e % m (HAC 14.85) function bnModPow(e,m) { var e_array = e.array; var i = e.bitLength(), k, r = nbv(1), z; if(i <= 0) return r; elseif(i < 18) k = 1; elseif(i < 48) k = 3; elseif(i < 144) k = 4; elseif(i < 768) k = 5; else k = 6; if(i < 8)
z = new Classic(m); elseif(m.isEven())
z = new Barrett(m); else
z = new Montgomery(m);
// precomputation var g = new Array(), n = 3, k1 = k-1, km = (1<<k)-1;
g[1] = z.convert(this); if(k > 1) { var g2 = nbi();
z.sqrTo(g[1],g2); while(n <= km) {
g[n] = nbi();
z.mulTo(g2,g[n-2],g[n]);
n += 2;
}
}
var j = e.t-1, w, is1 = true, r2 = nbi(), t;
i = nbits(e_array[j])-1; while(j >= 0) { if(i >= k1) w = (e_array[j]>>(i-k1))&km; else {
w = (e_array[j]&((1<<(i+1))-1))<<(k1-i); if(j > 0) w |= e_array[j-1]>>(BI_DB+i-k1);
}
n = k; while((w&1) == 0) { w >>= 1; --n; } if((i -= n) < 0) { i += BI_DB; --j; } if(is1) { // ret == 1, don't bother squaring or multiplying it
g[w].copyTo(r);
is1 = false;
} else { while(n > 1) { z.sqrTo(r,r2); z.sqrTo(r2,r); n -= 2; } if(n > 0) z.sqrTo(r,r2); else { t = r; r = r2; r2 = t; }
z.mulTo(r2,g[w],r);
}
// (public) gcd(this,a) (HAC 14.54) function bnGCD(a) { var x = (this.s<0)?this.negate():this.clone(); var y = (a.s<0)?a.negate():a.clone(); if(x.compareTo(y) < 0) { var t = x; x = y; y = t; } var i = x.getLowestSetBit(), g = y.getLowestSetBit(); if(g < 0) return x; if(i < g) g = i; if(g > 0) {
x.rShiftTo(g,x);
y.rShiftTo(g,y);
} while(x.signum() > 0) { if((i = x.getLowestSetBit()) > 0) x.rShiftTo(i,x); if((i = y.getLowestSetBit()) > 0) y.rShiftTo(i,y); if(x.compareTo(y) >= 0) {
x.subTo(y,x);
x.rShiftTo(1,x);
} else {
y.subTo(x,y);
y.rShiftTo(1,y);
}
} if(g > 0) y.lShiftTo(g,y); return y;
}
// (protected) this % n, n < 2^26 function bnpModInt(n) { var this_array = this.array; if(n <= 0) return 0; var d = BI_DV%n, r = (this.s<0)?n-1:0; if(this.t > 0) if(d == 0) r = this_array[0]%n; elsefor(var i = this.t-1; i >= 0; --i) r = (d*r+this_array[i])%n; return r;
}
var lowprimes = [2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,389,397,401,409,419,421,431,433,439,443,449,457,461,463,467,479,487,491,499,503,509]; var lplim = (1<<26)/lowprimes[lowprimes.length-1];
// (public) test primality with certainty >= 1-.5^t function bnIsProbablePrime(t) { var i, x = this.abs(); var x_array = x.array; if(x.t == 1 && x_array[0] <= lowprimes[lowprimes.length-1]) { for(i = 0; i < lowprimes.length; ++i) if(x_array[0] == lowprimes[i]) returntrue; returnfalse;
} if(x.isEven()) returnfalse;
i = 1; while(i < lowprimes.length) { var m = lowprimes[i], j = i+1; while(j < lowprimes.length && m < lplim) m *= lowprimes[j++];
m = x.modInt(m); while(i < j) if(m%lowprimes[i++] == 0) returnfalse;
} return x.millerRabin(t);
}
// (protected) true if probably prime (HAC 4.24, Miller-Rabin) function bnpMillerRabin(t) { var n1 = this.subtract(BigInteger.ONE); var k = n1.getLowestSetBit(); if(k <= 0) returnfalse; var r = n1.shiftRight(k);
t = (t+1)>>1; if(t > lowprimes.length) t = lowprimes.length; var a = nbi(); for(var i = 0; i < t; ++i) {
a.fromInt(lowprimes[i]); var y = a.modPow(r,this); if(y.compareTo(BigInteger.ONE) != 0 && y.compareTo(n1) != 0) { var j = 1; while(j++ < k && y.compareTo(n1) != 0) {
y = y.modPowInt(2,this); if(y.compareTo(BigInteger.ONE) == 0) returnfalse;
} if(y.compareTo(n1) != 0) returnfalse;
}
} returntrue;
}
// Plug in your RNG constructor here function prng_newstate() { returnnew Arcfour();
}
// Pool size must be a multiple of 4 and greater than 32. // An array of bytes the size of the pool will be passed to init() var rng_psize = 256; // Random number generator - requires a PRNG backend, e.g. prng4.js
// For best results, put code like // <body onClick='rng_seed_time();' onKeyPress='rng_seed_time();'> // in your main HTML document.
var rng_state; var rng_pool; var rng_pptr;
// Mix in a 32-bit integer into the pool function rng_seed_int(x) {
rng_pool[rng_pptr++] ^= x & 255;
rng_pool[rng_pptr++] ^= (x >> 8) & 255;
rng_pool[rng_pptr++] ^= (x >> 16) & 255;
rng_pool[rng_pptr++] ^= (x >> 24) & 255; if(rng_pptr >= rng_psize) rng_pptr -= rng_psize;
}
// Mix in the current time (w/milliseconds) into the pool function rng_seed_time() { // Use pre-computed date to avoid making the benchmark // results dependent on the current date.
rng_seed_int(1122926989487);
}
// Initialize the pool with junk if needed. if(rng_pool == null) {
rng_pool = new Array();
rng_pptr = 0; var t; while(rng_pptr < rng_psize) { // extract some randomness from Math.random()
t = Math.floor(65536 * MyMath.random());
rng_pool[rng_pptr++] = t >>> 8;
rng_pool[rng_pptr++] = t & 255;
}
rng_pptr = 0;
rng_seed_time(); //rng_seed_int(window.screenX); //rng_seed_int(window.screenY);
}
function rng_get_bytes(ba) { var i; for(i = 0; i < ba.length; ++i) ba[i] = rng_get_byte();
}
function SecureRandom() {}
SecureRandom.prototype.nextBytes = rng_get_bytes; // Depends on jsbn.js and rng.js
// convert a (hex) string to a bignum object function parseBigInt(str,r) { returnnew BigInteger(str,r);
}
function linebrk(s,n) { var ret = ""; var i = 0; while(i + n < s.length) {
ret += s.substring(i,i+n) + "\n";
i += n;
} return ret + s.substring(i,s.length);
}
// PKCS#1 (type 2, random) pad input string s to n bytes, and return a bigint function pkcs1pad2(s,n) { if(n < s.length + 11) {
alert("Message too long for RSA"); returnnull;
} var ba = new Array(); var i = s.length - 1; while(i >= 0 && n > 0) ba[--n] = s.charCodeAt(i--);
ba[--n] = 0; var rng = new SecureRandom(); var x = new Array(); while(n > 2) { // random non-zero pad
x[0] = 0; while(x[0] == 0) rng.nextBytes(x);
ba[--n] = x[0];
}
ba[--n] = 2;
ba[--n] = 0; returnnew BigInteger(ba);
}
// Set the public key fields N and e from hex strings function RSASetPublic(N,E) { if(N != null && E != null && N.length > 0 && E.length > 0) { this.n = parseBigInt(N,16); this.e = parseInt(E,16);
} else
alert("Invalid RSA public key");
}
// Perform raw public operation on "x": return x^e (mod n) function RSADoPublic(x) { return x.modPowInt(this.e, this.n);
}
// Return the PKCS#1 RSA encryption of "text" as an even-length hex string function RSAEncrypt(text) { var m = pkcs1pad2(text,(this.n.bitLength()+7)>>3); if(m == null) returnnull; var c = this.doPublic(m); if(c == null) returnnull; var h = c.toString(16); if((h.length & 1) == 0) return h; elsereturn"0" + h;
}
// Return the PKCS#1 RSA encryption of "text" as a Base64-encoded string //function RSAEncryptB64(text) { // var h = this.encrypt(text); // if(h) return hex2b64(h); else return null; //}
// public
RSAKey.prototype.setPublic = RSASetPublic;
RSAKey.prototype.encrypt = RSAEncrypt; //RSAKey.prototype.encrypt_b64 = RSAEncryptB64; // Depends on rsa.js and jsbn2.js
// Undo PKCS#1 (type 2, random) padding and, if valid, return the plaintext function pkcs1unpad2(d,n) { var b = d.toByteArray(); var i = 0; while(i < b.length && b[i] == 0) ++i; if(b.length-i != n-1 || b[i] != 2) returnnull;
++i; while(b[i] != 0) if(++i >= b.length) returnnull; var ret = ""; while(++i < b.length)
ret += String.fromCharCode(b[i]); return ret;
}
// Set the private key fields N, e, and d from hex strings function RSASetPrivate(N,E,D) { if(N != null && E != null && N.length > 0 && E.length > 0) { this.n = parseBigInt(N,16); this.e = parseInt(E,16); this.d = parseBigInt(D,16);
} else
alert("Invalid RSA private key");
}
// Set the private key fields N, e, d and CRT params from hex strings function RSASetPrivateEx(N,E,D,P,Q,DP,DQ,C) { if(N != null && E != null && N.length > 0 && E.length > 0) { this.n = parseBigInt(N,16); this.e = parseInt(E,16); this.d = parseBigInt(D,16); this.p = parseBigInt(P,16); this.q = parseBigInt(Q,16); this.dmp1 = parseBigInt(DP,16); this.dmq1 = parseBigInt(DQ,16); this.coeff = parseBigInt(C,16);
} else
alert("Invalid RSA private key");
}
// Generate a new random private key B bits long, using public expt E function RSAGenerate(B,E) { var rng = new SecureRandom(); var qs = B>>1; this.e = parseInt(E,16); var ee = new BigInteger(E,16); for(;;) { for(;;) { this.p = new BigInteger(B-qs,1,rng); if(this.p.subtract(BigInteger.ONE).gcd(ee).compareTo(BigInteger.ONE) == 0 && this.p.isProbablePrime(10)) break;
} for(;;) { this.q = new BigInteger(qs,1,rng); if(this.q.subtract(BigInteger.ONE).gcd(ee).compareTo(BigInteger.ONE) == 0 && this.q.isProbablePrime(10)) break;
} if(this.p.compareTo(this.q) <= 0) { var t = this.p; this.p = this.q; this.q = t;
} var p1 = this.p.subtract(BigInteger.ONE); var q1 = this.q.subtract(BigInteger.ONE); var phi = p1.multiply(q1); if(phi.gcd(ee).compareTo(BigInteger.ONE) == 0) { this.n = this.p.multiply(this.q); this.d = ee.modInverse(phi); this.dmp1 = this.d.mod(p1); this.dmq1 = this.d.mod(q1); this.coeff = this.q.modInverse(this.p); break;
}
}
}
// Perform raw private operation on "x": return x^d (mod n) function RSADoPrivate(x) { if(this.p == null || this.q == null) return x.modPow(this.d, this.n);
// TODO: re-calculate any missing CRT params var xp = x.mod(this.p).modPow(this.dmp1, this.p); var xq = x.mod(this.q).modPow(this.dmq1, this.q);
while(xp.compareTo(xq) < 0)
xp = xp.add(this.p); return xp.subtract(xq).multiply(this.coeff).mod(this.p).multiply(this.q).add(xq);
}
// Return the PKCS#1 RSA decryption of "ctext". // "ctext" is an even-length hex string and the output is a plain string. function RSADecrypt(ctext) { var c = parseBigInt(ctext, 16); var m = this.doPrivate(c); if(m == null) returnnull; return pkcs1unpad2(m, (this.n.bitLength()+7)>>3);
}
// Return the PKCS#1 RSA decryption of "ctext". // "ctext" is a Base64-encoded string and the output is a plain string. //function RSAB64Decrypt(ctext) { // var h = b64tohex(ctext); // if(h) return this.decrypt(h); else return null; //}
// So that v8 understands assertEq() if (assertEq == undefined)
{ function assertEq(to_check, expected) { if ( to_check !== expected )
{
print( "Error: Assertion failed: got \"" + to_check + "\", expected \"" + expected + "\"" );
}
}
}
function check_correctness(text, hash) { var RSA = new RSAKey();
RSA.setPublic(nValue, eValue);
RSA.setPrivateEx(nValue, eValue, dValue, pValue, qValue, dmp1Value, dmq1Value, coeffValue); var encrypted = RSA.encrypt(text); var decrypted = RSA.decrypt(encrypted);
assertEq( encrypted, hash );
assertEq( decrypted, text );
}
// All 'correct' hashes here come from v8's javascript shell built off of tag 2.3.4
check_correctness("Hello! I am some text.", "142b19b40fee712ab9468be296447d38c7dfe81a7850f11ae6aa21e49396a4e90bd6ba4aa385105e15960a59f95447dfad89671da6e08ed42229939583753be84d07558abb4feee4d46a92fd31d962679a1a5f4bf0fb7af414b9a756e18df7e6d1e96971cc66769f3b27d61ad932f2211373e0de388dc040557d4c3c3fe74320");
check_correctness("PLEASE ENCRYPT ME. I AM TEXT. I AM DIEING TO BE ENCRYPTED. OH WHY WONT YOU ENCRYPT ME!?", "490c1fae87d7046296e4b34b357912a72cb7c38c0da3198f1ac3aad3489662ce02663ec5ea1be58ae73a275f3096b16c491f3520ebf822df6c65cc95e28be1cc0a4454dfba3fdd402c3a9de0db2f308989bfc1a7fada0dd680db76d24b2d96bd6b7e7d7e7f962deb953038bae06092f7bb9bcb40bba4ec92e040df32f98e035e");
check_correctness("x","46c1b7cf202171b1b588e9ecf250e768dcf3b300490e859d508f708e702ef799bc496b9fac7634d60a82644653c5fd25b808393b234567116b8890d5f119c7c74dae7c97c8e40ba78ca2dc3e3d78ce859a7fa3815f42c27d0607eafc3940896abb6019cc28b2ff875531ed581a6351728a8df0d607b7c2c26265bf3dddbe4f84");
Messung V0.5
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