公共组件、公共样式集合
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'use strict';
var nativeImpl = require('crypto');
var checkParameters = require('./lib/precondition');
var defaultEncoding = require('./lib/default-encoding');
var toBuffer = require('./lib/to-buffer');
function nativePBKDF2(password, salt, iterations, keylen, digest, callback) {
checkParameters(iterations, keylen);
password = toBuffer(password, defaultEncoding, 'Password');
salt = toBuffer(salt, defaultEncoding, 'Salt');
if (typeof digest === 'function') {
callback = digest;
digest = 'sha1';
}
if (typeof callback !== 'function') {
throw new Error('No callback provided to pbkdf2');
}
return nativeImpl.pbkdf2(password, salt, iterations, keylen, digest, callback);
}
function nativePBKDF2Sync(password, salt, iterations, keylen, digest) {
checkParameters(iterations, keylen);
password = toBuffer(password, defaultEncoding, 'Password');
salt = toBuffer(salt, defaultEncoding, 'Salt');
digest = digest || 'sha1';
return nativeImpl.pbkdf2Sync(password, salt, iterations, keylen, digest);
}
/* istanbul ignore next */
if (!nativeImpl.pbkdf2Sync || nativeImpl.pbkdf2Sync.toString().indexOf('keylen, digest') === -1) {
/* eslint global-require: 0 */
exports.pbkdf2Sync = require('./lib/sync');
exports.pbkdf2 = require('./lib/async');
// native
} else {
exports.pbkdf2Sync = nativePBKDF2Sync;
exports.pbkdf2 = nativePBKDF2;
}