862235e57e
address, base58, base58check, hash all working with tests. base58check code taken from bitcore.
36 lines
920 B
JavaScript
36 lines
920 B
JavaScript
var base58 = require('./base58');
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var sha256sha256 = require('./hash').sha256sha256;
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var base58check = module.exports;
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base58check.encode = function(buf) {
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if (!Buffer.isBuffer(buf))
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throw new Error('base58check: Input must be a buffer');
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var checkedBuf = new Buffer(buf.length + 4);
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var hash = sha256sha256(buf);
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buf.copy(checkedBuf);
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hash.copy(checkedBuf, buf.length);
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return base58.encode(checkedBuf);
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};
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base58check.decode = function(s) {
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if (typeof s !== 'string')
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throw new Error('base58check: Input must be a string');
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var buf = base58.decode(s);
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if (buf.length < 4)
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throw new Error("base58check: Input string too short");
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var data = buf.slice(0, -4);
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var csum = buf.slice(-4);
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var hash = sha256sha256(data);
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var hash4 = hash.slice(0, 4);
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if (csum.toString('hex') !== hash4.toString('hex'))
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throw new Error("base58check: Checksum mismatch");
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return data;
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};
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