| 1 | var createHash = require('create-hash')
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| 2 |
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| 3 | function ripemd160 (buffer) {
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| 4 | return createHash('rmd160').update(buffer).digest()
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| 5 | }
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| 6 |
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| 7 | function sha1 (buffer) {
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| 8 | return createHash('sha1').update(buffer).digest()
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| 9 | }
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| 10 |
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| 11 | function sha256 (buffer) {
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| 12 | return createHash('sha256').update(buffer).digest()
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| 13 | }
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| 14 |
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| 15 | function hash160 (buffer) {
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| 16 | return ripemd160(sha256(buffer))
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| 17 | }
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| 18 |
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| 19 | function hash256 (buffer) {
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| 20 | return sha256(sha256(buffer))
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| 21 | }
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| 22 |
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| 23 | module.exports = {
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| 24 | hash160: hash160,
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| 25 | hash256: hash256,
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| 26 | ripemd160: ripemd160,
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| 27 | sha1: sha1,
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| 28 | sha256: sha256
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| 29 | }
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