已知16進(jìn)制模數(shù):C34E069415AC02FC4EA5F45779B7568506713E9210789D527BB89EE462662A1D0E94285E1A764F111D553ADD7C65673161E69298A8BE2212DF8016787E2F4859CD599516880D79EE5130FC5F8B7F69476938557CD3B8A79A612F1DDACCADAA5B6953ECC4716091E7C5E9F045B28004D33548EC89ED5C6B2C64D6C3697C5B9DD3
和指數(shù):10001
請(qǐng)問(wèn)用php怎么用16進(jìn)制的模數(shù)和已知指數(shù)才能得到公鑰進(jìn)行RSA加密???
【問(wèn)題詳細(xì)描述:
是這樣,由于業(yè)務(wù)需求,需要用php Curl進(jìn)行站點(diǎn)模擬登錄,而別人的站點(diǎn),是對(duì)pwd密碼進(jìn)行了rsa加密傳到后臺(tái)的,如果我要curl模擬登錄的話,必須也要把密碼進(jìn)行rsa加密模擬post提交上去。其中該站點(diǎn)登錄頁(yè)面的pwd加密是在前端js RSA加密的,其中看到有2個(gè)隱藏域,一個(gè)是16進(jìn)制的字符串(可看出是模數(shù)),然后還有一個(gè)是類(lèi)似于10001數(shù)字字符串(可看出是指數(shù)),他的js RSA加密算法如下:
<body>
<!--RSA加密-->
<script src="../../javascript/RSA/Barrett.js?versions=19" type="text/javascript"></script>
<script src="../../javascript/RSA/RSA.js?versions=19" type="text/javascript"></script>
<script src="../../javascript/RSA/BigInt.js?versions=19" type="text/javascript"></script>
<!---->
<div>
<input type="hidden" name="Modulus" id="ModulusID" value="B1AEB985675327181ACBE9B4E74F3424F157AC81B88CE92988408C16EAB77190EA4EB740F255A2206049457B54158BA775B61CE0A97568E55B606138AA5FE5B8A123CD27E6E1BCA469051420817807EE69F73D6B87D474EFC5AA40CB9715FE7BD1E22DE542D90F7E021F39B5F377E021AB84B0068B9614250484A20A3900E8FB">
<input type="hidden" name="Exponent" id="ExponentID" value="10001">
<input name="pwd" type="password" id="pwd" placeholder="請(qǐng)輸入密碼" maxlength="19">
</div>
<script>
$(function () {
var uPwd = $("#pwd").val().trim(); //密碼
//rsa加密
setMaxDigits(129);
var key = new RSAKeyPair($("#ExponentID").val(), "", $("#ModulusID").val());
var uPwd2 = encryptedString(key, $.trim(uPwd));//加密后密碼傳到后臺(tái)登錄
//rsa加密 end
var parameter = { uName: $("#uname").val(), uPwd: udPwd2};
$.ajax({
type: "POST",
url: "login.do",
dataType: 'json',
data: parameter,
cache: false,
error: function () {
alert("系統(tǒng)異常,請(qǐng)聯(lián)系客服咨詢(xún)!");
},
success: function (msg) {
if (msg == "" || msg == null) {
alert("系統(tǒng)異常,請(qǐng)聯(lián)系客服咨詢(xún)!" + msg);
return;
}
if (msg.status == 0) {
alert("登錄成功!");
window.location.reload();
return;
}else {
alert('登錄失敗'.msg);
return;
}
}
});
});
</script>
</body>
如上幾段代碼是前端給登錄密碼加密主要片段。其中js RSA加密是用的:ohdave.com/rsa/ 這網(wǎng)站的,因?yàn)楝F(xiàn)在要php curl模擬登錄別的站,我的思路是先通過(guò)curl獲取兩個(gè)ModulusID和ExponentID這2個(gè)異常域的值,然后通過(guò)php跟如上js rsa加密一樣給密碼加密,然后post登錄?,F(xiàn)在問(wèn)題是,我在php后端怎么才能像如上片段js RSA加密一樣給密碼RSA加密。求救
】
我最近也寫(xiě)過(guò)一個(gè)類(lèi)似模擬登錄的,由于你的html里面已經(jīng)有Modulus和Exponent了,你可以直接利用rsa庫(kù)對(duì)密碼進(jìn)行加密。我用的是nodejs自己封裝的,PHP的應(yīng)該也有。
var RSAUtils = {};
var biRadixBase = 2;
var biRadixBits = 16;
var bitsPerDigit = biRadixBits;
var biRadix = 1 << 16; // = 2^16 = 65536
var biHalfRadix = biRadix >>> 1;
var biRadixSquared = biRadix * biRadix;
var maxDigitVal = biRadix - 1;
var maxInteger = 9999999999999998;
//1024 * 2 / 16 = 128 digits of storage.
//
var maxDigits;
var ZERO_ARRAY;
var bigZero, bigOne;
RSAUtils.BigInt = function(flag) {
if (typeof flag == "boolean" && flag == true) {
this.digits = null;
} else {
this.digits = ZERO_ARRAY.slice(0);
}
this.isNeg = false;
};
RSAUtils.setMaxDigits = function(value) {
maxDigits = value;
ZERO_ARRAY = new Array(maxDigits);
for (var iza = 0; iza < ZERO_ARRAY.length; iza++) ZERO_ARRAY[iza] = 0;
bigZero = new RSAUtils.BigInt();
bigOne = new RSAUtils.BigInt();
bigOne.digits[0] = 1;
};
RSAUtils.setMaxDigits(20);
//The maximum number of digits in base 10 you can convert to an
//integer without JavaScript throwing up on you.
var dpl10 = 15;
RSAUtils.biFromNumber = function(i) {
var result = new RSAUtils.BigInt();
result.isNeg = i < 0;
i = Math.abs(i);
var j = 0;
while (i > 0) {
result.digits[j++] = i & maxDigitVal;
i = Math.floor(i / biRadix);
}
return result;
};
//lr10 = 10 ^ dpl10
var lr10 = RSAUtils.biFromNumber(1000000000000000);
RSAUtils.biFromDecimal = function(s) {
var isNeg = s.charAt(0) == '-';
var i = isNeg ? 1 : 0;
var result;
// Skip leading zeros.
while (i < s.length && s.charAt(i) == '0') ++i;
if (i == s.length) {
result = new RSAUtils.BigInt();
}
else {
var digitCount = s.length - i;
var fgl = digitCount % dpl10;
if (fgl == 0) fgl = dpl10;
result = RSAUtils.biFromNumber(Number(s.substr(i, fgl)));
i += fgl;
while (i < s.length) {
result = RSAUtils.biAdd(RSAUtils.biMultiply(result, lr10),
RSAUtils.biFromNumber(Number(s.substr(i, dpl10))));
i += dpl10;
}
result.isNeg = isNeg;
}
return result;
};
RSAUtils.biCopy = function(bi) {
var result = new RSAUtils.BigInt(true);
result.digits = bi.digits.slice(0);
result.isNeg = bi.isNeg;
return result;
};
RSAUtils.reverseStr = function(s) {
var result = "";
for (var i = s.length - 1; i > -1; --i) {
result += s.charAt(i);
}
return result;
};
var hexatrigesimalToChar = [
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j',
'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't',
'u', 'v', 'w', 'x', 'y', 'z'
];
RSAUtils.biToString = function(x, radix) { // 2 <= radix <= 36
var b = new RSAUtils.BigInt();
b.digits[0] = radix;
var qr = RSAUtils.biDivideModulo(x, b);
var result = hexatrigesimalToChar[qr[1].digits[0]];
while (RSAUtils.biCompare(qr[0], bigZero) == 1) {
qr = RSAUtils.biDivideModulo(qr[0], b);
digit = qr[1].digits[0];
result += hexatrigesimalToChar[qr[1].digits[0]];
}
return (x.isNeg ? "-" : "") + RSAUtils.reverseStr(result);
};
RSAUtils.biToDecimal = function(x) {
var b = new RSAUtils.BigInt();
b.digits[0] = 10;
var qr = RSAUtils.biDivideModulo(x, b);
var result = String(qr[1].digits[0]);
while (RSAUtils.biCompare(qr[0], bigZero) == 1) {
qr = RSAUtils.biDivideModulo(qr[0], b);
result += String(qr[1].digits[0]);
}
return (x.isNeg ? "-" : "") + RSAUtils.reverseStr(result);
};
var hexToChar = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f'];
RSAUtils.digitToHex = function(n) {
var mask = 0xf;
var result = "";
for (i = 0; i < 4; ++i) {
result += hexToChar[n & mask];
n >>>= 4;
}
return RSAUtils.reverseStr(result);
};
RSAUtils.biToHex = function(x) {
var result = "";
var n = RSAUtils.biHighIndex(x);
for (var i = RSAUtils.biHighIndex(x); i > -1; --i) {
result += RSAUtils.digitToHex(x.digits[i]);
}
return result;
};
RSAUtils.charToHex = function(c) {
var ZERO = 48;
var NINE = ZERO + 9;
var littleA = 97;
var littleZ = littleA + 25;
var bigA = 65;
var bigZ = 65 + 25;
var result;
if (c >= ZERO && c <= NINE) {
result = c - ZERO;
} else if (c >= bigA && c <= bigZ) {
result = 10 + c - bigA;
} else if (c >= littleA && c <= littleZ) {
result = 10 + c - littleA;
} else {
result = 0;
}
return result;
};
RSAUtils.hexToDigit = function(s) {
var result = 0;
var sl = Math.min(s.length, 4);
for (var i = 0; i < sl; ++i) {
result <<= 4;
result |= RSAUtils.charToHex(s.charCodeAt(i));
}
return result;
};
RSAUtils.biFromHex = function(s) {
var result = new RSAUtils.BigInt();
var sl = s.length;
for (var i = sl, j = 0; i > 0; i -= 4, ++j) {
result.digits[j] = RSAUtils.hexToDigit(s.substr(Math.max(i - 4, 0), Math.min(i, 4)));
}
return result;
};
RSAUtils.biFromString = function(s, radix) {
var isNeg = s.charAt(0) == '-';
var istop = isNeg ? 1 : 0;
var result = new RSAUtils.BigInt();
var place = new RSAUtils.BigInt();
place.digits[0] = 1; // radix^0
for (var i = s.length - 1; i >= istop; i--) {
var c = s.charCodeAt(i);
var digit = RSAUtils.charToHex(c);
var biDigit = RSAUtils.biMultiplyDigit(place, digit);
result = RSAUtils.biAdd(result, biDigit);
place = RSAUtils.biMultiplyDigit(place, radix);
}
result.isNeg = isNeg;
return result;
};
RSAUtils.biDump = function(b) {
return (b.isNeg ? "-" : "") + b.digits.join(" ");
};
RSAUtils.biAdd = function(x, y) {
var result;
if (x.isNeg != y.isNeg) {
y.isNeg = !y.isNeg;
result = RSAUtils.biSubtract(x, y);
y.isNeg = !y.isNeg;
}
else {
result = new RSAUtils.BigInt();
var c = 0;
var n;
for (var i = 0; i < x.digits.length; ++i) {
n = x.digits[i] + y.digits[i] + c;
result.digits[i] = n % biRadix;
c = Number(n >= biRadix);
}
result.isNeg = x.isNeg;
}
return result;
};
RSAUtils.biSubtract = function(x, y) {
var result;
if (x.isNeg != y.isNeg) {
y.isNeg = !y.isNeg;
result = RSAUtils.biAdd(x, y);
y.isNeg = !y.isNeg;
} else {
result = new RSAUtils.BigInt();
var n, c;
c = 0;
for (var i = 0; i < x.digits.length; ++i) {
n = x.digits[i] - y.digits[i] + c;
result.digits[i] = n % biRadix;
// Stupid non-conforming modulus operation.
if (result.digits[i] < 0) result.digits[i] += biRadix;
c = 0 - Number(n < 0);
}
// Fix up the negative sign, if any.
if (c == -1) {
c = 0;
for (var i = 0; i < x.digits.length; ++i) {
n = 0 - result.digits[i] + c;
result.digits[i] = n % biRadix;
// Stupid non-conforming modulus operation.
if (result.digits[i] < 0) result.digits[i] += biRadix;
c = 0 - Number(n < 0);
}
// Result is opposite sign of arguments.
result.isNeg = !x.isNeg;
} else {
// Result is same sign.
result.isNeg = x.isNeg;
}
}
return result;
};
RSAUtils.biHighIndex = function(x) {
var result = x.digits.length - 1;
while (result > 0 && x.digits[result] == 0) --result;
return result;
};
RSAUtils.biNumBits = function(x) {
var n = RSAUtils.biHighIndex(x);
var d = x.digits[n];
var m = (n + 1) * bitsPerDigit;
var result;
for (result = m; result > m - bitsPerDigit; --result) {
if ((d & 0x8000) != 0) break;
d <<= 1;
}
return result;
};
RSAUtils.biMultiply = function(x, y) {
var result = new RSAUtils.BigInt();
var c;
var n = RSAUtils.biHighIndex(x);
var t = RSAUtils.biHighIndex(y);
var u, uv, k;
for (var i = 0; i <= t; ++i) {
c = 0;
k = i;
for (j = 0; j <= n; ++j, ++k) {
uv = result.digits[k] + x.digits[j] * y.digits[i] + c;
result.digits[k] = uv & maxDigitVal;
c = uv >>> biRadixBits;
//c = Math.floor(uv / biRadix);
}
result.digits[i + n + 1] = c;
}
// Someone give me a logical xor, please.
result.isNeg = x.isNeg != y.isNeg;
return result;
};
RSAUtils.biMultiplyDigit = function(x, y) {
var n, c, uv;
result = new RSAUtils.BigInt();
n = RSAUtils.biHighIndex(x);
c = 0;
for (var j = 0; j <= n; ++j) {
uv = result.digits[j] + x.digits[j] * y + c;
result.digits[j] = uv & maxDigitVal;
c = uv >>> biRadixBits;
//c = Math.floor(uv / biRadix);
}
result.digits[1 + n] = c;
return result;
};
RSAUtils.arrayCopy = function(src, srcStart, dest, destStart, n) {
var m = Math.min(srcStart + n, src.length);
for (var i = srcStart, j = destStart; i < m; ++i, ++j) {
dest[j] = src[i];
}
};
var highBitMasks = [0x0000, 0x8000, 0xC000, 0xE000, 0xF000, 0xF800,
0xFC00, 0xFE00, 0xFF00, 0xFF80, 0xFFC0, 0xFFE0,
0xFFF0, 0xFFF8, 0xFFFC, 0xFFFE, 0xFFFF];
RSAUtils.biShiftLeft = function(x, n) {
var digitCount = Math.floor(n / bitsPerDigit);
var result = new RSAUtils.BigInt();
RSAUtils.arrayCopy(x.digits, 0, result.digits, digitCount,
result.digits.length - digitCount);
var bits = n % bitsPerDigit;
var rightBits = bitsPerDigit - bits;
for (var i = result.digits.length - 1, i1 = i - 1; i > 0; --i, --i1) {
result.digits[i] = ((result.digits[i] << bits) & maxDigitVal) |
((result.digits[i1] & highBitMasks[bits]) >>>
(rightBits));
}
result.digits[0] = ((result.digits[i] << bits) & maxDigitVal);
result.isNeg = x.isNeg;
return result;
};
var lowBitMasks = [0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F,
0x003F, 0x007F, 0x00FF, 0x01FF, 0x03FF, 0x07FF,
0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF];
RSAUtils.biShiftRight = function(x, n) {
var digitCount = Math.floor(n / bitsPerDigit);
var result = new RSAUtils.BigInt();
RSAUtils.arrayCopy(x.digits, digitCount, result.digits, 0,
x.digits.length - digitCount);
var bits = n % bitsPerDigit;
var leftBits = bitsPerDigit - bits;
for (var i = 0, i1 = i + 1; i < result.digits.length - 1; ++i, ++i1) {
result.digits[i] = (result.digits[i] >>> bits) |
((result.digits[i1] & lowBitMasks[bits]) << leftBits);
}
result.digits[result.digits.length - 1] >>>= bits;
result.isNeg = x.isNeg;
return result;
};
RSAUtils.biMultiplyByRadixPower = function(x, n) {
var result = new RSAUtils.BigInt();
RSAUtils.arrayCopy(x.digits, 0, result.digits, n, result.digits.length - n);
return result;
};
RSAUtils.biDivideByRadixPower = function(x, n) {
var result = new RSAUtils.BigInt();
RSAUtils.arrayCopy(x.digits, n, result.digits, 0, result.digits.length - n);
return result;
};
RSAUtils.biModuloByRadixPower = function(x, n) {
var result = new RSAUtils.BigInt();
RSAUtils.arrayCopy(x.digits, 0, result.digits, 0, n);
return result;
};
RSAUtils.biCompare = function(x, y) {
if (x.isNeg != y.isNeg) {
return 1 - 2 * Number(x.isNeg);
}
for (var i = x.digits.length - 1; i >= 0; --i) {
if (x.digits[i] != y.digits[i]) {
if (x.isNeg) {
return 1 - 2 * Number(x.digits[i] > y.digits[i]);
} else {
return 1 - 2 * Number(x.digits[i] < y.digits[i]);
}
}
}
return 0;
};
RSAUtils.biDivideModulo = function(x, y) {
var nb = RSAUtils.biNumBits(x);
var tb = RSAUtils.biNumBits(y);
var origYIsNeg = y.isNeg;
var q, r;
if (nb < tb) {
// |x| < |y|
if (x.isNeg) {
q = RSAUtils.biCopy(bigOne);
q.isNeg = !y.isNeg;
x.isNeg = false;
y.isNeg = false;
r = biSubtract(y, x);
// Restore signs, 'cause they're references.
x.isNeg = true;
y.isNeg = origYIsNeg;
} else {
q = new RSAUtils.BigInt();
r = RSAUtils.biCopy(x);
}
return [q, r];
}
q = new RSAUtils.BigInt();
r = x;
// Normalize Y.
var t = Math.ceil(tb / bitsPerDigit) - 1;
var lambda = 0;
while (y.digits[t] < biHalfRadix) {
y = RSAUtils.biShiftLeft(y, 1);
++lambda;
++tb;
t = Math.ceil(tb / bitsPerDigit) - 1;
}
// Shift r over to keep the quotient constant. We'll shift the
// remainder back at the end.
r = RSAUtils.biShiftLeft(r, lambda);
nb += lambda; // Update the bit count for x.
var n = Math.ceil(nb / bitsPerDigit) - 1;
var b = RSAUtils.biMultiplyByRadixPower(y, n - t);
while (RSAUtils.biCompare(r, b) != -1) {
++q.digits[n - t];
r = RSAUtils.biSubtract(r, b);
}
for (var i = n; i > t; --i) {
var ri = (i >= r.digits.length) ? 0 : r.digits[i];
var ri1 = (i - 1 >= r.digits.length) ? 0 : r.digits[i - 1];
var ri2 = (i - 2 >= r.digits.length) ? 0 : r.digits[i - 2];
var yt = (t >= y.digits.length) ? 0 : y.digits[t];
var yt1 = (t - 1 >= y.digits.length) ? 0 : y.digits[t - 1];
if (ri == yt) {
q.digits[i - t - 1] = maxDigitVal;
} else {
q.digits[i - t - 1] = Math.floor((ri * biRadix + ri1) / yt);
}
var c1 = q.digits[i - t - 1] * ((yt * biRadix) + yt1);
var c2 = (ri * biRadixSquared) + ((ri1 * biRadix) + ri2);
while (c1 > c2) {
--q.digits[i - t - 1];
c1 = q.digits[i - t - 1] * ((yt * biRadix) | yt1);
c2 = (ri * biRadix * biRadix) + ((ri1 * biRadix) + ri2);
}
b = RSAUtils.biMultiplyByRadixPower(y, i - t - 1);
r = RSAUtils.biSubtract(r, RSAUtils.biMultiplyDigit(b, q.digits[i - t - 1]));
if (r.isNeg) {
r = RSAUtils.biAdd(r, b);
--q.digits[i - t - 1];
}
}
r = RSAUtils.biShiftRight(r, lambda);
// Fiddle with the signs and stuff to make sure that 0 <= r < y.
q.isNeg = x.isNeg != origYIsNeg;
if (x.isNeg) {
if (origYIsNeg) {
q = RSAUtils.biAdd(q, bigOne);
} else {
q = RSAUtils.biSubtract(q, bigOne);
}
y = RSAUtils.biShiftRight(y, lambda);
r = RSAUtils.biSubtract(y, r);
}
// Check for the unbelievably stupid degenerate case of r == -0.
if (r.digits[0] == 0 && RSAUtils.biHighIndex(r) == 0) r.isNeg = false;
return [q, r];
};
RSAUtils.biDivide = function(x, y) {
return RSAUtils.biDivideModulo(x, y)[0];
};
RSAUtils.biModulo = function(x, y) {
return RSAUtils.biDivideModulo(x, y)[1];
};
RSAUtils.biMultiplyMod = function(x, y, m) {
return RSAUtils.biModulo(RSAUtils.biMultiply(x, y), m);
};
RSAUtils.biPow = function(x, y) {
var result = bigOne;
var a = x;
while (true) {
if ((y & 1) != 0) result = RSAUtils.biMultiply(result, a);
y >>= 1;
if (y == 0) break;
a = RSAUtils.biMultiply(a, a);
}
return result;
};
RSAUtils.biPowMod = function(x, y, m) {
var result = bigOne;
var a = x;
var k = y;
while (true) {
if ((k.digits[0] & 1) != 0) result = RSAUtils.biMultiplyMod(result, a, m);
k = RSAUtils.biShiftRight(k, 1);
if (k.digits[0] == 0 && RSAUtils.biHighIndex(k) == 0) break;
a = RSAUtils.biMultiplyMod(a, a, m);
}
return result;
};
RSAUtils.BarrettMu = function(m) {
this.modulus = RSAUtils.biCopy(m);
this.k = RSAUtils.biHighIndex(this.modulus) + 1;
var b2k = new RSAUtils.BigInt();
b2k.digits[2 * this.k] = 1; // b2k = b^(2k)
this.mu = RSAUtils.biDivide(b2k, this.modulus);
this.bkplus1 = new RSAUtils.BigInt();
this.bkplus1.digits[this.k + 1] = 1; // bkplus1 = b^(k+1)
this.modulo = RSAUtils.BarrettMu_modulo;
this.multiplyMod = RSAUtils.BarrettMu_multiplyMod;
this.powMod = RSAUtils.BarrettMu_powMod;
};
RSAUtils.BarrettMu_modulo = function(x) {
var q1 = RSAUtils.biDivideByRadixPower(x, this.k - 1);
var q2 = RSAUtils.biMultiply(q1, this.mu);
var q3 = RSAUtils.biDivideByRadixPower(q2, this.k + 1);
var r1 = RSAUtils.biModuloByRadixPower(x, this.k + 1);
var r2term = RSAUtils.biMultiply(q3, this.modulus);
var r2 = RSAUtils.biModuloByRadixPower(r2term, this.k + 1);
var r = RSAUtils.biSubtract(r1, r2);
if (r.isNeg) {
r = RSAUtils.biAdd(r, this.bkplus1);
}
var rgtem = RSAUtils.biCompare(r, this.modulus) >= 0;
while (rgtem) {
r = RSAUtils.biSubtract(r, this.modulus);
rgtem = RSAUtils.biCompare(r, this.modulus) >= 0;
}
return r;
}
RSAUtils.BarrettMu_multiplyMod = function(x, y) {
/*
x = this.modulo(x);
y = this.modulo(y);
*/
var xy = RSAUtils.biMultiply(x, y);
return this.modulo(xy);
}
RSAUtils.BarrettMu_powMod = function(x, y) {
var result = new RSAUtils.BigInt();
result.digits[0] = 1;
var a = x;
var k = y;
while (true) {
if ((k.digits[0] & 1) != 0) result = this.multiplyMod(result, a);
k = RSAUtils.biShiftRight(k, 1);
if (k.digits[0] == 0 && RSAUtils.biHighIndex(k) == 0) break;
a = this.multiplyMod(a, a);
}
return result;
}
function RSAKeyPair(encryptionExponent, decryptionExponent, modulus) {
this.e = RSAUtils.biFromHex(encryptionExponent);
this.d = RSAUtils.biFromHex(decryptionExponent);
this.m = RSAUtils.biFromHex(modulus);
// We can do two bytes per digit, so
// chunkSize = 2 * (number of digits in modulus - 1).
// Since biHighIndex returns the high index, not the number of digits, 1 has
// already been subtracted.
this.chunkSize = 2 * RSAUtils.biHighIndex(this.m);
this.radix = 16;
this.barrett = new RSAUtils.BarrettMu(this.m);
};
RSAUtils.getKeyPair = function(encryptionExponent, decryptionExponent, modulus) {
return new RSAKeyPair(encryptionExponent, decryptionExponent, modulus);
};
RSAUtils.twoDigit = function(n) {
return (n < 10 ? "0" : "") + String(n);
};
RSAUtils.encryptedString = function(key, s) {
var a = [];
var sl = s.length;
var i = 0;
while (i < sl) {
a[i] = s.charCodeAt(i);
i++;
}
while (a.length % key.chunkSize != 0) {
a[i++] = 0;
}
var al = a.length;
var result = "";
var j, k, block;
for (i = 0; i < al; i += key.chunkSize) {
block = new RSAUtils.BigInt();
j = 0;
for (k = i; k < i + key.chunkSize; ++j) {
block.digits[j] = a[k++];
block.digits[j] += a[k++] << 8;
}
var crypt = key.barrett.powMod(block, key.e);
var text = key.radix == 16 ? RSAUtils.biToHex(crypt) : RSAUtils.biToString(crypt, key.radix);
result += text + " ";
}
return result.substring(0, result.length - 1); // Remove last space.
};
RSAUtils.decryptedString = function(key, s) {
var blocks = s.split(" ");
var result = "";
var i, j, block;
for (i = 0; i < blocks.length; ++i) {
var bi;
if (key.radix == 16) {
bi = RSAUtils.biFromHex(blocks[i]);
}
else {
bi = RSAUtils.biFromString(blocks[i], key.radix);
}
block = key.barrett.powMod(bi, key.d);
for (j = 0; j <= RSAUtils.biHighIndex(block); ++j) {
result += String.fromCharCode(block.digits[j] & 255,
block.digits[j] >> 8);
}
}
// Remove trailing null, if any.
if (result.charCodeAt(result.length - 1) == 0) {
result = result.substring(0, result.length - 1);
}
return result;
};
RSAUtils.setMaxDigits(130);
module.exports = RSAUtils;
使用方式也:
var RSAUtils = require('./RSA')
// 獲取RSA的公鑰,計(jì)算加密后的用戶名、密碼
function step_2(result) {
return new Promise((resolve, reject) => {
console.log(`即將訪問(wèn):${url_get_key}`)
request.post({
url: url_get_key
}, (err, r, body) => {
let publicKeyModulus, publicKeyExponent
let obj = JSON.parse(body)
publicKeyModulus = obj.publicKeyModulus
publicKeyExponent = obj.publicKeyExponent
let key = new RSAUtils.getKeyPair(publicKeyExponent, '', publicKeyModulus)
let username_encrypted = RSAUtils.encryptedString(key, user_name.split('').reverse().join(''))
let passwd_encrypted = RSAUtils.encryptedString(key, passwd.split('').reverse().join(''))
result.publicKeyModulus = publicKeyModulus
result.publicKeyExponent = publicKeyExponent
result.username_encrypted = username_encrypted
result.passwd_encrypted = passwd_encrypted
resolve(result)
})
})
}
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北大青鳥(niǎo)中博軟件學(xué)院創(chuàng)立于2003年,作為華東區(qū)著名互聯(lián)網(wǎng)學(xué)院和江蘇省首批服務(wù)外包人才培訓(xùn)基地,中博成功培育了近30000名軟件工程師走向高薪崗位,合作企業(yè)超4
中公教育集團(tuán)創(chuàng)建于1999年,經(jīng)過(guò)二十年潛心發(fā)展,已由一家北大畢業(yè)生自主創(chuàng)業(yè)的信息技術(shù)與教育服務(wù)機(jī)構(gòu),發(fā)展為教育服務(wù)業(yè)的綜合性企業(yè)集團(tuán),成為集合面授教學(xué)培訓(xùn)、網(wǎng)
達(dá)內(nèi)教育集團(tuán)成立于2002年,是一家由留學(xué)海歸創(chuàng)辦的高端職業(yè)教育培訓(xùn)機(jī)構(gòu),是中國(guó)一站式人才培養(yǎng)平臺(tái)、一站式人才輸送平臺(tái)。2014年4月3日在美國(guó)成功上市,融資1
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