1 | var native = require('crypto')
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2 |
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3 | var checkParameters = require('./lib/precondition')
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4 | var defaultEncoding = require('./lib/default-encoding')
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5 | var toBuffer = require('./lib/to-buffer')
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6 |
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7 | function nativePBKDF2 (password, salt, iterations, keylen, digest, callback) {
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8 | checkParameters(iterations, keylen)
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9 | password = toBuffer(password, defaultEncoding, 'Password')
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10 | salt = toBuffer(salt, defaultEncoding, 'Salt')
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11 |
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12 | if (typeof digest === 'function') {
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13 | callback = digest
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14 | digest = 'sha1'
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15 | }
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16 | if (typeof callback !== 'function') throw new Error('No callback provided to pbkdf2')
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17 |
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18 | return native.pbkdf2(password, salt, iterations, keylen, digest, callback)
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19 | }
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20 |
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21 | function nativePBKDF2Sync (password, salt, iterations, keylen, digest) {
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22 | checkParameters(iterations, keylen)
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23 | password = toBuffer(password, defaultEncoding, 'Password')
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24 | salt = toBuffer(salt, defaultEncoding, 'Salt')
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25 | digest = digest || 'sha1'
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26 | return native.pbkdf2Sync(password, salt, iterations, keylen, digest)
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27 | }
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28 |
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29 |
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30 | if (!native.pbkdf2Sync || native.pbkdf2Sync.toString().indexOf('keylen, digest') === -1) {
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31 | exports.pbkdf2Sync = require('./lib/sync')
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32 | exports.pbkdf2 = require('./lib/async')
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33 |
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34 |
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35 | } else {
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36 | exports.pbkdf2Sync = nativePBKDF2Sync
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37 | exports.pbkdf2 = nativePBKDF2
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38 | }
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