demarches-normaliennes/app/services/encryption_service.rb

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class EncryptionService
def initialize
len = ActiveSupport::MessageEncryptor.key_len
salt = Rails.application.secrets.encryption_service_salt
password = Rails.application.secrets.secret_key_base
key = ActiveSupport::KeyGenerator.new(password).generate_key(salt, len)
@encryptor = ActiveSupport::MessageEncryptor.new(key)
end
def encrypt(value)
value.blank? ? nil : @encryptor.encrypt_and_sign(value)
end
def decrypt(value)
value.blank? ? nil : @encryptor.decrypt_and_verify(value)
end
end