diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9cb2a3bc4..dd907674c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 Forge ChangeLog
 ===============
 
+## 1.4.0 - 2026-xx-xx
+
+### Changed
+- [jsbn] Update to `jsbn` 1.4. Sync partly back to original style for easier
+  updates every decade or so.
+
 ## 1.3.3 - 2025-12-02
 
 ### Fixed
diff --git a/lib/jsbn.js b/lib/jsbn.js
index 11f965c56..c9ac3c709 100644
--- a/lib/jsbn.js
+++ b/lib/jsbn.js
@@ -124,10 +124,12 @@ if(typeof(navigator) === 'undefined')
 } else if(j_lm && (navigator.appName == "Microsoft Internet Explorer")) {
   BigInteger.prototype.am = am2;
   dbits = 30;
-} else if(j_lm && (navigator.appName != "Netscape")) {
+}
+else if(j_lm && (navigator.appName != "Netscape")) {
   BigInteger.prototype.am = am1;
   dbits = 26;
-} else { // Mozilla/Netscape seems to prefer am3
+}
+else { // Mozilla/Netscape seems to prefer am3
   BigInteger.prototype.am = am3;
   dbits = 28;
 }
@@ -202,7 +204,8 @@ function bnpFromString(s,b) {
     else if(sh+k > this.DB) {
       this.data[this.t-1] |= (x&((1<<(this.DB-sh))-1))<<sh;
       this.data[this.t++] = (x>>(this.DB-sh));
-    } else
+    }
+    else
       this.data[this.t-1] |= x<<sh;
     sh += k;
     if(sh >= this.DB) sh -= this.DB;
@@ -239,7 +242,8 @@ function bnToString(b) {
       if(p < k) {
         d = (this.data[i]&((1<<p)-1))<<(k-p);
         d |= this.data[--i]>>(p+=this.DB-k);
-      } else {
+      }
+      else {
         d = (this.data[i]>>(p-=k))&km;
         if(p <= 0) { p += this.DB; --i; }
       }
@@ -351,7 +355,8 @@ function bnpSubTo(a,r) {
       c >>= this.DB;
     }
     c += this.s;
-  } else {
+  }
+  else {
     c += this.s;
     while(i < a.t) {
       c -= a.data[i];
@@ -411,7 +416,8 @@ function bnpDivRemTo(m,q,r) {
   if(r == null) r = nbi();
   var y = nbi(), ts = this.s, ms = m.s;
   var nsh = this.DB-nbits(pm.data[pm.t-1]);	// normalize modulus
-  if(nsh > 0) { pm.lShiftTo(nsh,y); pt.lShiftTo(nsh,r); } else { pm.copyTo(y); pt.copyTo(r); }
+  if(nsh > 0) { pm.lShiftTo(nsh,y); pt.lShiftTo(nsh,r); }
+  else { pm.copyTo(y); pt.copyTo(r); }
   var ys = y.t;
   var y0 = y.data[ys-1];
   if(y0 == 0) return;
@@ -608,326 +614,335 @@ BigInteger.ONE = nbv(1);
 
 // jsbn2 lib
 
-//Copyright (c) 2005-2009  Tom Wu
-//All Rights Reserved.
-//See "LICENSE" for details (See jsbn.js for LICENSE).
+// Copyright (c) 2005-2009  Tom Wu
+// All Rights Reserved.
+// See "LICENSE" for details (See jsbn.js for LICENSE).
 
-//Extended JavaScript BN functions, required for RSA private ops.
+// Extended JavaScript BN functions, required for RSA private ops.
 
-//Version 1.1: new BigInteger("0", 10) returns "proper" zero
+// Version 1.1: new BigInteger("0", 10) returns "proper" zero
+// Version 1.2: square() API, isProbablePrime fix
 
-//(public)
+// (public)
 function bnClone() { var r = nbi(); this.copyTo(r); return r; }
 
-//(public) return value as integer
+// (public) return value as integer
 function bnIntValue() {
-if(this.s < 0) {
- if(this.t == 1) return this.data[0]-this.DV;
- else if(this.t == 0) return -1;
-} else if(this.t == 1) return this.data[0];
-else if(this.t == 0) return 0;
-// assumes 16 < DB < 32
-return ((this.data[1]&((1<<(32-this.DB))-1))<<this.DB)|this.data[0];
+  if(this.s < 0) {
+    if(this.t == 1) return this.data[0]-this.DV;
+    else if(this.t == 0) return -1;
+  }
+  else if(this.t == 1) return this.data[0];
+  else if(this.t == 0) return 0;
+  // assumes 16 < DB < 32
+  return ((this.data[1]&((1<<(32-this.DB))-1))<<this.DB)|this.data[0];
 }
 
-//(public) return value as byte
+// (public) return value as byte
 function bnByteValue() { return (this.t==0)?this.s:(this.data[0]<<24)>>24; }
 
-//(public) return value as short (assumes DB>=16)
+// (public) return value as short (assumes DB>=16)
 function bnShortValue() { return (this.t==0)?this.s:(this.data[0]<<16)>>16; }
 
-//(protected) return x s.t. r^x < DV
+// (protected) return x s.t. r^x < DV
 function bnpChunkSize(r) { return Math.floor(Math.LN2*this.DB/Math.log(r)); }
 
-//(public) 0 if this == 0, 1 if this > 0
+// (public) 0 if this == 0, 1 if this > 0
 function bnSigNum() {
-if(this.s < 0) return -1;
-else if(this.t <= 0 || (this.t == 1 && this.data[0] <= 0)) return 0;
-else return 1;
+  if(this.s < 0) return -1;
+  else if(this.t <= 0 || (this.t == 1 && this.data[0] <= 0)) return 0;
+  else return 1;
 }
 
-//(protected) convert to radix string
+// (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;
+  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
+// (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
+  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
+  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 i = this.t, r = new Array();
-r[0] = this.s;
-var p = this.DB-(i*this.DB)%8, d, k = 0;
-if(i-- > 0) {
- if(p < this.DB && (d = this.data[i]>>p) != (this.s&this.DM)>>p)
-   r[k++] = d|(this.s<<(this.DB-p));
- while(i >= 0) {
-   if(p < 8) {
-     d = (this.data[i]&((1<<p)-1))<<(8-p);
-     d |= this.data[--i]>>(p+=this.DB-8);
-   } else {
-     d = (this.data[i]>>(p-=8))&0xff;
-     if(p <= 0) { p += this.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;
+  var i = this.t, r = new Array();
+  r[0] = this.s;
+  var p = this.DB-(i*this.DB)%8, d, k = 0;
+  if(i-- > 0) {
+    if(p < this.DB && (d = this.data[i]>>p) != (this.s&this.DM)>>p)
+      r[k++] = d|(this.s<<(this.DB-p));
+    while(i >= 0) {
+      if(p < 8) {
+        d = (this.data[i]&((1<<p)-1))<<(8-p);
+        d |= this.data[--i]>>(p+=this.DB-8);
+      }
+      else {
+        d = (this.data[i]>>(p-=8))&0xff;
+        if(p <= 0) { p += this.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)
+// (protected) r = this op a (bitwise)
 function bnpBitwiseTo(a,op,r) {
-var i, f, m = Math.min(a.t,this.t);
-for(i = 0; i < m; ++i) r.data[i] = op(this.data[i],a.data[i]);
-if(a.t < this.t) {
- f = a.s&this.DM;
- for(i = m; i < this.t; ++i) r.data[i] = op(this.data[i],f);
- r.t = this.t;
-} else {
- f = this.s&this.DM;
- for(i = m; i < a.t; ++i) r.data[i] = op(f,a.data[i]);
- r.t = a.t;
-}
-r.s = op(this.s,a.s);
-r.clamp();
-}
-
-//(public) this & a
+  var i, f, m = Math.min(a.t,this.t);
+  for(i = 0; i < m; ++i) r.data[i] = op(this.data[i],a.data[i]);
+  if(a.t < this.t) {
+    f = a.s&this.DM;
+    for(i = m; i < this.t; ++i) r.data[i] = op(this.data[i],f);
+    r.t = this.t;
+  }
+  else {
+    f = this.s&this.DM;
+    for(i = m; i < a.t; ++i) r.data[i] = op(f,a.data[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
+// (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
+// (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
+// (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
+// (public) ~this
 function bnNot() {
-var r = nbi();
-for(var i = 0; i < this.t; ++i) r.data[i] = this.DM&~this.data[i];
-r.t = this.t;
-r.s = ~this.s;
-return r;
+  var r = nbi();
+  for(var i = 0; i < this.t; ++i) r.data[i] = this.DM&~this.data[i];
+  r.t = this.t;
+  r.s = ~this.s;
+  return r;
 }
 
-//(public) this << n
+// (public) this << n
 function bnShiftLeft(n) {
-var r = nbi();
-if(n < 0) this.rShiftTo(-n,r); else this.lShiftTo(n,r);
-return r;
+  var r = nbi();
+  if(n < 0) this.rShiftTo(-n,r); else this.lShiftTo(n,r);
+  return r;
 }
 
-//(public) this >> n
+// (public) this >> n
 function bnShiftRight(n) {
-var r = nbi();
-if(n < 0) this.lShiftTo(-n,r); else this.rShiftTo(n,r);
-return r;
+  var r = nbi();
+  if(n < 0) this.lShiftTo(-n,r); else this.rShiftTo(n,r);
+  return r;
 }
 
-//return index of lowest 1-bit in x, x < 2^31
+// 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;
+  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)
+// (public) returns index of lowest 1-bit (or -1 if none)
 function bnGetLowestSetBit() {
-for(var i = 0; i < this.t; ++i)
- if(this.data[i] != 0) return i*this.DB+lbit(this.data[i]);
-if(this.s < 0) return this.t*this.DB;
-return -1;
+  for(var i = 0; i < this.t; ++i)
+    if(this.data[i] != 0) return i*this.DB+lbit(this.data[i]);
+  if(this.s < 0) return this.t*this.DB;
+  return -1;
 }
 
-//return number of 1 bits in x
+// return number of 1 bits in x
 function cbit(x) {
-var r = 0;
-while(x != 0) { x &= x-1; ++r; }
-return r;
+  var r = 0;
+  while(x != 0) { x &= x-1; ++r; }
+  return r;
 }
 
-//(public) return number of set bits
+// (public) return number of set bits
 function bnBitCount() {
-var r = 0, x = this.s&this.DM;
-for(var i = 0; i < this.t; ++i) r += cbit(this.data[i]^x);
-return r;
+  var r = 0, x = this.s&this.DM;
+  for(var i = 0; i < this.t; ++i) r += cbit(this.data[i]^x);
+  return r;
 }
 
-//(public) true iff nth bit is set
+// (public) true iff nth bit is set
 function bnTestBit(n) {
-var j = Math.floor(n/this.DB);
-if(j >= this.t) return(this.s!=0);
-return((this.data[j]&(1<<(n%this.DB)))!=0);
+  var j = Math.floor(n/this.DB);
+  if(j >= this.t) return(this.s!=0);
+  return((this.data[j]&(1<<(n%this.DB)))!=0);
 }
 
-//(protected) this op (1<<n)
+// (protected) this op (1<<n)
 function bnpChangeBit(n,op) {
-var r = BigInteger.ONE.shiftLeft(n);
-this.bitwiseTo(r,op,r);
-return r;
+  var r = BigInteger.ONE.shiftLeft(n);
+  this.bitwiseTo(r,op,r);
+  return r;
 }
 
-//(public) this | (1<<n)
+// (public) this | (1<<n)
 function bnSetBit(n) { return this.changeBit(n,op_or); }
 
-//(public) this & ~(1<<n)
+// (public) this & ~(1<<n)
 function bnClearBit(n) { return this.changeBit(n,op_andnot); }
 
-//(public) this ^ (1<<n)
+// (public) this ^ (1<<n)
 function bnFlipBit(n) { return this.changeBit(n,op_xor); }
 
-//(protected) r = this + a
+// (protected) r = this + a
 function bnpAddTo(a,r) {
-var i = 0, c = 0, m = Math.min(a.t,this.t);
-while(i < m) {
- c += this.data[i]+a.data[i];
- r.data[i++] = c&this.DM;
- c >>= this.DB;
-}
-if(a.t < this.t) {
- c += a.s;
- while(i < this.t) {
-   c += this.data[i];
-   r.data[i++] = c&this.DM;
-   c >>= this.DB;
- }
- c += this.s;
-} else {
- c += this.s;
- while(i < a.t) {
-   c += a.data[i];
-   r.data[i++] = c&this.DM;
-   c >>= this.DB;
- }
- c += a.s;
-}
-r.s = (c<0)?-1:0;
-if(c > 0) r.data[i++] = c;
-else if(c < -1) r.data[i++] = this.DV+c;
-r.t = i;
-r.clamp();
-}
-
-//(public) this + a
+  var i = 0, c = 0, m = Math.min(a.t,this.t);
+  while(i < m) {
+    c += this.data[i]+a.data[i];
+    r.data[i++] = c&this.DM;
+    c >>= this.DB;
+  }
+  if(a.t < this.t) {
+    c += a.s;
+    while(i < this.t) {
+      c += this.data[i];
+      r.data[i++] = c&this.DM;
+      c >>= this.DB;
+    }
+    c += this.s;
+  }
+  else {
+    c += this.s;
+    while(i < a.t) {
+      c += a.data[i];
+      r.data[i++] = c&this.DM;
+      c >>= this.DB;
+    }
+    c += a.s;
+  }
+  r.s = (c<0)?-1:0;
+  if(c > 0) r.data[i++] = c;
+  else if(c < -1) r.data[i++] = this.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
+// (public) this - a
 function bnSubtract(a) { var r = nbi(); this.subTo(a,r); return r; }
 
-//(public) this * a
+// (public) this * a
 function bnMultiply(a) { var r = nbi(); this.multiplyTo(a,r); return r; }
 
-//(public) this / a
+// (public) this^2
+function bnSquare() { var r = nbi(); this.squareTo(r); return r; }
+
+// (public) this / a
 function bnDivide(a) { var r = nbi(); this.divRemTo(a,r,null); return r; }
 
-//(public) this % a
+// (public) this % a
 function bnRemainder(a) { var r = nbi(); this.divRemTo(a,null,r); return r; }
 
-//(public) [this/a,this%a]
+// (public) [this/a,this%a]
 function bnDivideAndRemainder(a) {
-var q = nbi(), r = nbi();
-this.divRemTo(a,q,r);
-return new Array(q,r);
+  var q = nbi(), r = nbi();
+  this.divRemTo(a,q,r);
+  return new Array(q,r);
 }
 
-//(protected) this *= n, this >= 0, 1 < n < DV
+// (protected) this *= n, this >= 0, 1 < n < DV
 function bnpDMultiply(n) {
-this.data[this.t] = this.am(0,n-1,this,0,0,this.t);
-++this.t;
-this.clamp();
+  this.data[this.t] = this.am(0,n-1,this,0,0,this.t);
+  ++this.t;
+  this.clamp();
 }
 
-//(protected) this += n << w words, this >= 0
+// (protected) this += n << w words, this >= 0
 function bnpDAddOffset(n,w) {
-if(n == 0) return;
-while(this.t <= w) this.data[this.t++] = 0;
-this.data[w] += n;
-while(this.data[w] >= this.DV) {
- this.data[w] -= this.DV;
- if(++w >= this.t) this.data[this.t++] = 0;
- ++this.data[w];
-}
+  if(n == 0) return;
+  while(this.t <= w) this.data[this.t++] = 0;
+  this.data[w] += n;
+  while(this.data[w] >= this.DV) {
+    this.data[w] -= this.DV;
+    if(++w >= this.t) this.data[this.t++] = 0;
+    ++this.data[w];
+  }
 }
 
-//A "null" reducer
+// A "null" reducer
 function NullExp() {}
 function nNop(x) { return x; }
 function nMulTo(x,y,r) { x.multiplyTo(y,r); }
@@ -938,68 +953,68 @@ NullExp.prototype.revert = nNop;
 NullExp.prototype.mulTo = nMulTo;
 NullExp.prototype.sqrTo = nSqrTo;
 
-//(public) this^e
+// (public) this^e
 function bnPow(e) { return this.exp(e,new NullExp()); }
 
-//(protected) r = lower n words of "this * a", a.t <= n
-//"this" should be the larger one if appropriate.
+// (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 i = Math.min(this.t+a.t,n);
-r.s = 0; // assumes a,this >= 0
-r.t = i;
-while(i > 0) r.data[--i] = 0;
-var j;
-for(j = r.t-this.t; i < j; ++i) r.data[i+this.t] = this.am(0,a.data[i],r,i,0,this.t);
-for(j = Math.min(a.t,n); i < j; ++i) this.am(0,a.data[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.
+  var i = Math.min(this.t+a.t,n);
+  r.s = 0; // assumes a,this >= 0
+  r.t = i;
+  while(i > 0) r.data[--i] = 0;
+  var j;
+  for(j = r.t-this.t; i < j; ++i) r.data[i+this.t] = this.am(0,a.data[i],r,i,0,this.t);
+  for(j = Math.min(a.t,n); i < j; ++i) this.am(0,a.data[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) {
---n;
-var i = r.t = this.t+a.t-n;
-r.s = 0; // assumes a,this >= 0
-while(--i >= 0) r.data[i] = 0;
-for(i = Math.max(n-this.t,0); i < a.t; ++i)
- r.data[this.t+i-n] = this.am(n-i,a.data[i],r,0,0,this.t+i-n);
-r.clamp();
-r.drShiftTo(1,r);
+  --n;
+  var i = r.t = this.t+a.t-n;
+  r.s = 0; // assumes a,this >= 0
+  while(--i >= 0) r.data[i] = 0;
+  for(i = Math.max(n-this.t,0); i < a.t; ++i)
+    r.data[this.t+i-n] = this.am(n-i,a.data[i],r,0,0,this.t+i-n);
+  r.clamp();
+  r.drShiftTo(1,r);
 }
 
-//Barrett modular reduction
+// Barrett modular reduction
 function Barrett(m) {
-// setup Barrett
-this.r2 = nbi();
-this.q3 = nbi();
-BigInteger.ONE.dlShiftTo(2*m.t,this.r2);
-this.mu = this.r2.divide(m);
-this.m = m;
+  // setup Barrett
+  this.r2 = nbi();
+  this.q3 = nbi();
+  BigInteger.ONE.dlShiftTo(2*m.t,this.r2);
+  this.mu = this.r2.divide(m);
+  this.m = m;
 }
 
 function barrettConvert(x) {
-if(x.s < 0 || x.t > 2*this.m.t) return x.mod(this.m);
-else if(x.compareTo(this.m) < 0) return x;
-else { var r = nbi(); x.copyTo(r); this.reduce(r); return r; }
+  if(x.s < 0 || x.t > 2*this.m.t) return x.mod(this.m);
+  else if(x.compareTo(this.m) < 0) return x;
+  else { var r = nbi(); x.copyTo(r); this.reduce(r); return r; }
 }
 
 function barrettRevert(x) { return x; }
 
-//x = x mod m (HAC 14.42)
+// x = x mod m (HAC 14.42)
 function barrettReduce(x) {
-x.drShiftTo(this.m.t-1,this.r2);
-if(x.t > this.m.t+1) { x.t = this.m.t+1; x.clamp(); }
-this.mu.multiplyUpperTo(this.r2,this.m.t+1,this.q3);
-this.m.multiplyLowerTo(this.q3,this.m.t+1,this.r2);
-while(x.compareTo(this.r2) < 0) x.dAddOffset(1,this.m.t+1);
-x.subTo(this.r2,x);
-while(x.compareTo(this.m) >= 0) x.subTo(this.m,x);
+  x.drShiftTo(this.m.t-1,this.r2);
+  if(x.t > this.m.t+1) { x.t = this.m.t+1; x.clamp(); }
+  this.mu.multiplyUpperTo(this.r2,this.m.t+1,this.q3);
+  this.m.multiplyLowerTo(this.q3,this.m.t+1,this.r2);
+  while(x.compareTo(this.r2) < 0) x.dAddOffset(1,this.m.t+1);
+  x.subTo(this.r2,x);
+  while(x.compareTo(this.m) >= 0) x.subTo(this.m,x);
 }
 
-//r = x^2 mod m; x != r
+// r = x^2 mod m; x != r
 function barrettSqrTo(x,r) { x.squareTo(r); this.reduce(r); }
 
-//r = x*y mod m; x,y != r
+// r = x*y mod m; x,y != r
 function barrettMulTo(x,y,r) { x.multiplyTo(y,r); this.reduce(r); }
 
 Barrett.prototype.convert = barrettConvert;
@@ -1008,187 +1023,192 @@ Barrett.prototype.reduce = barrettReduce;
 Barrett.prototype.mulTo = barrettMulTo;
 Barrett.prototype.sqrTo = barrettSqrTo;
 
-//(public) this^e % m (HAC 14.85)
+// (public) this^e % m (HAC 14.85)
 function bnModPow(e,m) {
-var i = e.bitLength(), k, r = nbv(1), z;
-if(i <= 0) return r;
-else if(i < 18) k = 1;
-else if(i < 48) k = 3;
-else if(i < 144) k = 4;
-else if(i < 768) k = 5;
-else k = 6;
-if(i < 8)
- z = new Classic(m);
-else if(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.data[j])-1;
-while(j >= 0) {
- if(i >= k1) w = (e.data[j]>>(i-k1))&km;
- else {
-   w = (e.data[j]&((1<<(i+1))-1))<<(k1-i);
-   if(j > 0) w |= e.data[j-1]>>(this.DB+i-k1);
- }
-
- n = k;
- while((w&1) == 0) { w >>= 1; --n; }
- if((i -= n) < 0) { i += this.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);
- }
-
- while(j >= 0 && (e.data[j]&(1<<i)) == 0) {
-   z.sqrTo(r,r2); t = r; r = r2; r2 = t;
-   if(--i < 0) { i = this.DB-1; --j; }
- }
-}
-return z.revert(r);
-}
-
-//(public) gcd(this,a) (HAC 14.54)
+  var i = e.bitLength(), k, r = nbv(1), z;
+  if(i <= 0) return r;
+  else if(i < 18) k = 1;
+  else if(i < 48) k = 3;
+  else if(i < 144) k = 4;
+  else if(i < 768) k = 5;
+  else k = 6;
+  if(i < 8)
+    z = new Classic(m);
+  else if(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.data[j])-1;
+  while(j >= 0) {
+    if(i >= k1) w = (e.data[j]>>(i-k1))&km;
+    else {
+      w = (e.data[j]&((1<<(i+1))-1))<<(k1-i);
+      if(j > 0) w |= e.data[j-1]>>(this.DB+i-k1);
+    }
+
+    n = k;
+    while((w&1) == 0) { w >>= 1; --n; }
+    if((i -= n) < 0) { i += this.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);
+    }
+
+    while(j >= 0 && (e.data[j]&(1<<i)) == 0) {
+      z.sqrTo(r,r2); t = r; r = r2; r2 = t;
+      if(--i < 0) { i = this.DB-1; --j; }
+    }
+  }
+  return z.revert(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
+  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) {
-if(n <= 0) return 0;
-var d = this.DV%n, r = (this.s<0)?n-1:0;
-if(this.t > 0)
- if(d == 0) r = this.data[0]%n;
- else for(var i = this.t-1; i >= 0; --i) r = (d*r+this.data[i])%n;
-return r;
+  if(n <= 0) return 0;
+  var d = this.DV%n, r = (this.s<0)?n-1:0;
+  if(this.t > 0)
+    if(d == 0) r = this.data[0]%n;
+    else for(var i = this.t-1; i >= 0; --i) r = (d*r+this.data[i])%n;
+  return r;
 }
 
-//(public) 1/this % m (HAC 14.61)
+// (public) 1/this % m (HAC 14.61)
 function bnModInverse(m) {
-var ac = m.isEven();
-if((this.isEven() && ac) || m.signum() == 0) return BigInteger.ZERO;
-var u = m.clone(), v = this.clone();
-var a = nbv(1), b = nbv(0), c = nbv(0), d = nbv(1);
-while(u.signum() != 0) {
- while(u.isEven()) {
-   u.rShiftTo(1,u);
-   if(ac) {
-     if(!a.isEven() || !b.isEven()) { a.addTo(this,a); b.subTo(m,b); }
-     a.rShiftTo(1,a);
-   } else if(!b.isEven()) b.subTo(m,b);
-   b.rShiftTo(1,b);
- }
- while(v.isEven()) {
-   v.rShiftTo(1,v);
-   if(ac) {
-     if(!c.isEven() || !d.isEven()) { c.addTo(this,c); d.subTo(m,d); }
-     c.rShiftTo(1,c);
-   } else if(!d.isEven()) d.subTo(m,d);
-   d.rShiftTo(1,d);
- }
- if(u.compareTo(v) >= 0) {
-   u.subTo(v,u);
-   if(ac) a.subTo(c,a);
-   b.subTo(d,b);
- } else {
-   v.subTo(u,v);
-   if(ac) c.subTo(a,c);
-   d.subTo(b,d);
- }
-}
-if(v.compareTo(BigInteger.ONE) != 0) return BigInteger.ZERO;
-if(d.compareTo(m) >= 0) return d.subtract(m);
-if(d.signum() < 0) d.addTo(m,d); else return d;
-if(d.signum() < 0) return d.add(m); else return d;
-}
-
-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 ac = m.isEven();
+  if((this.isEven() && ac) || m.signum() == 0) return BigInteger.ZERO;
+  var u = m.clone(), v = this.clone();
+  var a = nbv(1), b = nbv(0), c = nbv(0), d = nbv(1);
+  while(u.signum() != 0) {
+    while(u.isEven()) {
+      u.rShiftTo(1,u);
+      if(ac) {
+        if(!a.isEven() || !b.isEven()) { a.addTo(this,a); b.subTo(m,b); }
+        a.rShiftTo(1,a);
+      }
+      else if(!b.isEven()) b.subTo(m,b);
+      b.rShiftTo(1,b);
+    }
+    while(v.isEven()) {
+      v.rShiftTo(1,v);
+      if(ac) {
+        if(!c.isEven() || !d.isEven()) { c.addTo(this,c); d.subTo(m,d); }
+        c.rShiftTo(1,c);
+      }
+      else if(!d.isEven()) d.subTo(m,d);
+      d.rShiftTo(1,d);
+    }
+    if(u.compareTo(v) >= 0) {
+      u.subTo(v,u);
+      if(ac) a.subTo(c,a);
+      b.subTo(d,b);
+    }
+    else {
+      v.subTo(u,v);
+      if(ac) c.subTo(a,c);
+      d.subTo(b,d);
+    }
+  }
+  if(v.compareTo(BigInteger.ONE) != 0) return BigInteger.ZERO;
+  if(d.compareTo(m) >= 0) return d.subtract(m);
+  if(d.signum() < 0) d.addTo(m,d); else return d;
+  if(d.signum() < 0) return d.add(m); else return d;
+}
+
+var lowprimes = [2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,313,317,331,337,347,349,353,359,367,373,379,383,389,397,401,409,419,421,431,433,439,443,449,457,461,463,467,479,487,491,499,503,509,521,523,541,547,557,563,569,571,577,587,593,599,601,607,613,617,619,631,641,643,647,653,659,661,673,677,683,691,701,709,719,727,733,739,743,751,757,761,769,773,787,797,809,811,821,823,827,829,839,853,857,859,863,877,881,883,887,907,911,919,929,937,941,947,953,967,971,977,983,991,997];
 var lplim = (1<<26)/lowprimes[lowprimes.length-1];
 
-//(public) test primality with certainty >= 1-.5^t
+// (public) test primality with certainty >= 1-.5^t
 function bnIsProbablePrime(t) {
-var i, x = this.abs();
-if(x.t == 1 && x.data[0] <= lowprimes[lowprimes.length-1]) {
- for(i = 0; i < lowprimes.length; ++i)
-   if(x.data[0] == lowprimes[i]) return true;
- return false;
-}
-if(x.isEven()) return false;
-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) return false;
-}
-return x.millerRabin(t);
+  var i, x = this.abs();
+  if(x.t == 1 && x.data[0] <= lowprimes[lowprimes.length-1]) {
+    for(i = 0; i < lowprimes.length; ++i)
+      if(x.data[0] == lowprimes[i]) return true;
+    return false;
+  }
+  if(x.isEven()) return false;
+  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) return false;
+  }
+  return x.millerRabin(t);
 }
 
-//(protected) true if probably prime (HAC 4.24, Miller-Rabin)
+// (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) return false;
-var r = n1.shiftRight(k);
-var prng = bnGetPrng();
-var a;
-for(var i = 0; i < t; ++i) {
- // select witness 'a' at random from between 1 and n1
- do {
-   a = new BigInteger(this.bitLength(), prng);
- }
- while(a.compareTo(BigInteger.ONE) <= 0 || a.compareTo(n1) >= 0);
- 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) return false;
-   }
-   if(y.compareTo(n1) != 0) return false;
- }
-}
-return true;
+  var n1 = this.subtract(BigInteger.ONE);
+  var k = n1.getLowestSetBit();
+  if(k <= 0) return false;
+  var r = n1.shiftRight(k);
+  var prng = bnGetPrng();
+  var a;
+  for(var i = 0; i < t; ++i) {
+    // select witness 'a' at random from between 1 and n1
+    do {
+      a = new BigInteger(this.bitLength(), prng);
+    }
+    while(a.compareTo(BigInteger.ONE) <= 0 || a.compareTo(n1) >= 0);
+    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) return false;
+      }
+      if(y.compareTo(n1) != 0) return false;
+    }
+  }
+  return true;
 }
 
 // get pseudo random number generator
@@ -1204,7 +1224,7 @@ function bnGetPrng() {
   };
 }
 
-//protected
+// protected
 BigInteger.prototype.chunkSize = bnpChunkSize;
 BigInteger.prototype.toRadix = bnpToRadix;
 BigInteger.prototype.fromRadix = bnpFromRadix;
@@ -1219,7 +1239,7 @@ BigInteger.prototype.multiplyUpperTo = bnpMultiplyUpperTo;
 BigInteger.prototype.modInt = bnpModInt;
 BigInteger.prototype.millerRabin = bnpMillerRabin;
 
-//public
+// public
 BigInteger.prototype.clone = bnClone;
 BigInteger.prototype.intValue = bnIntValue;
 BigInteger.prototype.byteValue = bnByteValue;
@@ -1254,11 +1274,14 @@ BigInteger.prototype.pow = bnPow;
 BigInteger.prototype.gcd = bnGCD;
 BigInteger.prototype.isProbablePrime = bnIsProbablePrime;
 
-//BigInteger interfaces not implemented in jsbn:
+// JSBN-specific extension
+BigInteger.prototype.square = bnSquare;
+
+// BigInteger interfaces not implemented in jsbn:
 
-//BigInteger(int signum, byte[] magnitude)
-//double doubleValue()
-//float floatValue()
-//int hashCode()
-//long longValue()
-//static BigInteger valueOf(long val)
+// BigInteger(int signum, byte[] magnitude)
+// double doubleValue()
+// float floatValue()
+// int hashCode()
+// long longValue()
+// static BigInteger valueOf(long val)