class AttrCipher::Cipher
Constants
- ALGORITHM
Public Class Methods
decrypt(secret, value, serialize = false)
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# File lib/attr_cipher/cipher.rb, line 42 def self.decrypt(secret, value, serialize = false) new(secret, serialize).decrypt(value) end
encrypt(secret, value, serialize = false)
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# File lib/attr_cipher/cipher.rb, line 46 def self.encrypt(secret, value, serialize = false) new(secret, serialize).encrypt(value) end
new(secret = nil, serialize = false)
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# File lib/attr_cipher/cipher.rb, line 9 def initialize(secret = nil, serialize = false) @secret = secret @serialize = serialize end
Public Instance Methods
cipher(mode, value)
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# File lib/attr_cipher/cipher.rb, line 14 def cipher(mode, value) cipher = OpenSSL::Cipher.new(ALGORITHM).public_send(mode) digest = Digest::SHA256.digest(@secret) cipher.key = digest cipher.iv = digest[0...cipher.iv_len] cipher.update(value) + cipher.final end
decrypt(value)
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# File lib/attr_cipher/cipher.rb, line 22 def decrypt(value) if @secret.nil? || (@secret.respond_to?(:size) && @secret.size < 100) raise SecretException.new("Secret not set or must have at least 100 characters.") else decoded = Base64.decode64(value) decrypted = cipher(:decrypt, decoded) @serialize ? Marshal.load(decrypted) : decrypted end end
encrypt(value)
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# File lib/attr_cipher/cipher.rb, line 32 def encrypt(value) if @secret.nil? || (@secret.respond_to?(:size) && @secret.size < 100) raise SecretException.new("Secret not set or must have at least 100 characters.") else data = @serialize ? Marshal.dump(value) : value.to_s encrypted = cipher(:encrypt, data) Base64.encode64(encrypted).chomp end end