Created
June 19, 2021 14:31
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Simple demonstration about md5 login
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| >> authenticate?(3, 'one') | |
| => false | |
| >> authenticate?(1, 'one1') | |
| => false | |
| >> authenticate?(1, 'one') | |
| => true |
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| class Account < Struct.new(:id, :digest_password) | |
| # Check if password is valid | |
| # | |
| # @param password [String] The user password | |
| # @return [Boolean] True when given password match with encrypted user password | |
| def valid_password?(password) | |
| self.class.encrypt(password) == digest_password | |
| end | |
| # Create a new Account | |
| # | |
| # @param options [Hash] List of attributes to the account | |
| # @option options [Integer] :id The account ID | |
| # @option options [Integer] :id The account plain password (Application are going to encrypt and safe store password) | |
| # @return [Account] Return an instance of Account | |
| def self.create(id:, password:) | |
| new(id, encrypt(password)) | |
| end | |
| # Encrypt string using MD5 | |
| # | |
| # @param value [String] The string that should be encrypted | |
| # @return [String] hexdigest generated with MD5 algorithm | |
| def self.encrypt(value) | |
| Digest::MD5.hexdigest(value.to_s) | |
| end | |
| end | |
| # Add accounts to the @accounts instance variable | |
| @accounts = [] | |
| @accounts << Account.create(id: 1, password: 'one') #<struct Account id=1, digest_password="f97c5d29941bfb1b2fdab0874906ab82"> | |
| @accounts << Account.create(id: 2, password: 'two') #<struct Account id=2, digest_password="b8a9f715dbb64fd5c56e7783c6820a61"> | |
| # Define authenticate method | |
| # @param id [Number] the account id | |
| # @param password [String] the account password | |
| # @return [Boolean] Return true if account exist and given password match, or false in case of missing id or invalid password | |
| def authenticate?(id, password) | |
| account = @accounts.find { |a| a.id == id } | |
| return false unless account | |
| account.valid_password?(password) | |
| end |
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