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Explicit check for invalid characters in Base58 decoder.

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This commit is contained in:
justmoon 2012-07-17 14:28:41 +02:00
parent faa10f0f6a
commit c952aaeb3e
1 changed files with 4 additions and 0 deletions
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4
src/base58.js
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@ -1,6 +1,7 @@
(function (Bitcoin) {
Bitcoin.Base58 = {
alphabet: "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz",
validRegex: /^[1-9A-HJ-NP-Za-km-z]+$/,
base: BigInteger.valueOf(58),
/**
@ -45,6 +46,9 @@
var leadingZerosNum = 0;
for (var i = input.length - 1; i >= 0; i--) {
var alphaIndex = B58.alphabet.indexOf(input[i]);
if (alphaIndex < 0) {
throw "Invalid character";
}
bi = bi.add(BigInteger.valueOf(alphaIndex)
.multiply(B58.base.pow(input.length - 1 -i)));