| 1 | # jsbn: javascript big number
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| 2 |
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| 3 | [Tom Wu's Original Website](http://www-cs-students.stanford.edu/~tjw/jsbn/)
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| 4 |
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| 5 | I felt compelled to put this on github and publish to npm. I haven't tested every other big integer library out there, but the few that I have tested in comparison to this one have not even come close in performance. I am aware of the `bi` module on npm, however it has been modified and I wanted to publish the original without modifications. This is jsbn and jsbn2 from Tom Wu's original website above, with the module pattern applied to prevent global leaks and to allow for use with node.js on the server side.
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| 6 |
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| 7 | ## usage
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| 8 |
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| 9 | var BigInteger = require('jsbn').BigInteger;
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| 10 |
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| 11 | var bi = new BigInteger('91823918239182398123');
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| 12 | console.log(bi.bitLength()); // 67
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| 13 |
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| 14 |
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| 15 | ## API
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| 16 |
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| 17 | ### bi.toString()
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| 18 |
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| 19 | returns the base-10 number as a string
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| 20 |
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| 21 | ### bi.negate()
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| 22 |
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| 23 | returns a new BigInteger equal to the negation of `bi`
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| 24 |
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| 25 | ### bi.abs
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| 26 |
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| 27 | returns new BI of absolute value
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| 28 |
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| 29 | ### bi.compareTo
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| 30 |
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| 31 |
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| 32 |
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| 33 | ### bi.bitLength
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| 34 |
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| 35 |
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| 36 |
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| 37 | ### bi.mod
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| 38 |
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| 39 |
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| 40 |
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| 41 | ### bi.modPowInt
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| 42 |
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| 43 |
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| 44 |
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| 45 | ### bi.clone
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| 46 |
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| 47 |
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| 48 |
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| 49 | ### bi.intValue
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| 50 |
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| 51 |
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| 52 |
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| 53 | ### bi.byteValue
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| 54 |
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| 55 |
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| 56 |
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| 57 | ### bi.shortValue
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| 58 |
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| 59 |
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| 60 |
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| 61 | ### bi.signum
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| 62 |
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| 63 |
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| 64 |
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| 65 | ### bi.toByteArray
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| 66 |
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| 67 |
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| 68 |
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| 69 | ### bi.equals
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| 70 |
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| 71 |
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| 72 |
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| 73 | ### bi.min
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| 74 |
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| 75 |
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| 76 |
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| 77 | ### bi.max
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| 78 |
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| 79 |
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| 80 |
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| 81 | ### bi.and
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| 82 |
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| 83 |
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| 84 |
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| 85 | ### bi.or
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| 86 |
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| 87 |
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| 88 |
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| 89 | ### bi.xor
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| 90 |
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| 91 |
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| 92 |
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| 93 | ### bi.andNot
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| 94 |
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| 95 |
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| 96 |
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| 97 | ### bi.not
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| 98 |
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| 99 |
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| 100 |
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| 101 | ### bi.shiftLeft
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| 102 |
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| 103 |
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| 104 |
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| 105 | ### bi.shiftRight
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| 106 |
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| 107 |
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| 108 |
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| 109 | ### bi.getLowestSetBit
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| 110 |
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| 111 |
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| 112 |
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| 113 | ### bi.bitCount
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| 114 |
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| 115 |
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| 116 |
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| 117 | ### bi.testBit
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| 118 |
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| 119 |
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| 120 |
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| 121 | ### bi.setBit
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| 122 |
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| 123 |
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| 124 |
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| 125 | ### bi.clearBit
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| 126 |
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| 127 |
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| 128 |
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| 129 | ### bi.flipBit
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| 130 |
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| 131 |
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| 132 |
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| 133 | ### bi.add
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| 134 |
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| 135 |
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| 136 |
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| 137 | ### bi.subtract
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| 138 |
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| 139 |
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| 140 |
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| 141 | ### bi.multiply
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| 142 |
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| 143 |
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| 144 |
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| 145 | ### bi.divide
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| 146 |
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| 147 |
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| 148 |
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| 149 | ### bi.remainder
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| 150 |
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| 151 |
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| 152 |
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| 153 | ### bi.divideAndRemainder
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| 154 |
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| 155 |
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| 156 |
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| 157 | ### bi.modPow
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| 158 |
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| 159 |
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| 160 |
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| 161 | ### bi.modInverse
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| 162 |
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| 163 |
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| 164 |
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| 165 | ### bi.pow
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| 166 |
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| 167 |
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| 168 |
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| 169 | ### bi.gcd
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| 170 |
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| 171 |
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| 172 |
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| 173 | ### bi.isProbablePrime
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