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47 lines
1.7 KiB
CoffeeScript
47 lines
1.7 KiB
CoffeeScript
scrypt = require "scrypt"
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errors = require "errors"
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Promise = require "bluebird"
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# Scrypt input/output format configuration
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# FIXME: Figure out how to isolate this, so that there is a guarantee these changes won't affect any other `scrypt` imports outside of the module.
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scrypt.hash.config.keyEncoding = "utf8"
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scrypt.hash.config.outputEncoding = "base64"
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scrypt.verify.config.keyEncoding = "utf8"
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scrypt.verify.config.hashEncoding = "base64"
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# Some custom error types, since the `scrypt` library doesn't have proper error handling
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errors.create name: "ScryptError"
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errors.create {name: "ScryptInputError", parents: errors.ScryptError}
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errors.create {name: "ScryptPasswordError", parents: errors.ScryptError}
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errors.create {name: "ScryptInternalError", parents: errors.ScryptError}
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scryptHandler = (resolve, reject) ->
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# This is ridiculous, but `scrypt` doesn't have proper error-handling facilities...
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return (err, result) ->
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if err?
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errorObj = switch err.scrypt_err_code
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when 1, 2, 3, 4, 5, 6, 9, 10, 12, 13 then errors.ScryptInternalError
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when 7, 8 then errors.ScryptInputError
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when 11 then errors.ScryptPasswordError
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reject new errorObj(err.scrypt_err_message)
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else
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resolve result
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module.exports =
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hash: (password, options = {}, callback) ->
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(new Promise (resolve, reject) ->
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options.params ?= scrypt.params(0.1)
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scrypt.hash password, options.params, scryptHandler(resolve, reject)
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).nodeify(callback)
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verifyHash: (password, hash, callback) ->
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(new Promise (resolve, reject) ->
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scrypt.verify hash, password, scryptHandler(resolve, reject)
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).nodeify(callback)
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ScryptError: errors.ScryptError
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InputError: errors.ScryptInputError
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PasswordError: errors.ScryptPasswordError
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InternalError: errors.ScryptInternalError
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scryptLib: scrypt
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