class Botan::PK::Decrypt

Public Key Decrypt Operation

See {Botan::PK::PrivateKey#decrypt} for a simpler interface.

Public Class Methods

destroy(ptr) click to toggle source

@api private

# File lib/botan/pk/op/decrypt.rb, line 38
def self.destroy(ptr)
  LibBotan.botan_pk_op_decrypt_destroy(ptr)
end
new(key:, padding: nil) click to toggle source

@param key [Botan::PK::PrivateKey] the private key @param padding [String] the padding method name

# File lib/botan/pk/op/decrypt.rb, line 21
def initialize(key:, padding: nil)
  padding ||= Botan::DEFAULT_EME
  unless key.instance_of?(PrivateKey)
    raise Botan::Error, 'Decryption requires an instance of PrivateKey'
  end
  ptr = FFI::MemoryPointer.new(:pointer)
  flags = 0
  Botan.call_ffi(:botan_pk_op_decrypt_create,
                 ptr, key.ptr, padding, flags)
  ptr = ptr.read_pointer
  if ptr.null?
    raise Botan::Error, 'botan_pk_op_decrypt_create returned NULL'
  end
  @ptr = FFI::AutoPointer.new(ptr, self.class.method(:destroy))
end

Public Instance Methods

decrypt(msg) click to toggle source

Decrypts the provided data.

@param msg [String] the data @return [String] the decrypted data

# File lib/botan/pk/op/decrypt.rb, line 46
def decrypt(msg)
  msg_buf = FFI::MemoryPointer.from_data(msg)
  Botan.call_ffi_with_buffer(lambda { |b, bl|
    LibBotan.botan_pk_op_decrypt(@ptr, b, bl, msg_buf, msg_buf.size)
  })
end
inspect() click to toggle source
# File lib/botan/pk/op/decrypt.rb, line 53
def inspect
  Botan.inspect_ptr(self)
end