Jack Mallers
7 years ago
3 changed files with 1 additions and 48 deletions
@ -1,42 +0,0 @@ |
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import zbase32 from 'zbase32' |
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function convertBigEndianBufferToLong(longBuffer) { |
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let longValue = 0 |
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const byteArray = Buffer.from(longBuffer).swap64() |
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for (let i = byteArray.length - 1; i >= 0; i -= 1) { |
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longValue = (longValue * 256) + byteArray[i] |
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} |
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return longValue |
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} |
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export function decodeInvoice(payreq) { |
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const payreqBase32 = zbase32.decode(payreq) |
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const bufferHexRotated = Buffer.from(payreqBase32).toString('hex') |
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const bufferHex = bufferHexRotated.substr(bufferHexRotated.length - 1, bufferHexRotated.length) |
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+ bufferHexRotated.substr(0, bufferHexRotated.length - 1) |
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const buffer = Buffer.from(bufferHex, 'hex') |
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const pubkeyBuffer = buffer.slice(0, 33); |
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const pubkey = pubkeyBuffer.toString('hex'); |
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const paymentHashBuffer = buffer.slice(33, 65) |
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const paymentHashHex = paymentHashBuffer.toString('hex') |
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const valueBuffer = buffer.slice(65, 73) |
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const amount = convertBigEndianBufferToLong(valueBuffer) |
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return { |
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payreq, |
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pubkey, |
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amount, |
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r_hash: paymentHashHex |
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} |
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} |
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export default { |
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decodeInvoice |
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} |
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