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require 'crypt_keeper/log_subscriber/postgres_pgp'
module CryptKeeper
module Provider
class PostgresPgpPublicKey
include CryptKeeper::Helper::SQL
attr_accessor :key
def initialize(options = {})
ActiveSupport.run_load_hooks(:crypt_keeper_postgres_pgp_log, self)
@key = options.fetch(:key) do
raise ArgumentError, "Missing :key"
end
@public_key = options.fetch(:public_key)
@private_key = options[:private_key]
end
# Public: Encrypts a string
#
# Returns an encrypted string
def encrypt(value)
if !@private_key.present? && encrypted?(value)
value
else
escape_and_execute_sql(["SELECT pgp_pub_encrypt(?, dearmor(?))", value.to_s, @public_key])['pgp_pub_encrypt']
end
end
# Public: Decrypts a string
#
# Returns a plaintext string
def decrypt(value)
if @private_key.present?
escape_and_execute_sql(["SELECT pgp_pub_decrypt(?, dearmor(?), ?)", value, @private_key, @key])['pgp_pub_decrypt']
else
value
end
end
# Public: Attempts to extract a PGP key id. If it's successful, it returns true
#
# Returns boolean
def encrypted?(value)
begin
ActiveRecord::Base.transaction(requires_new: true) do
escape_and_execute_sql(["SELECT pgp_key_id(?)", value.to_s])['pgp_key_id'].present?
end
rescue ActiveRecord::StatementInvalid
false
end
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems