class Botan::PK::Verify

Public Key Verify Operation

See {Botan::PK::PublicKey#verify} for a simpler interface.

Public Class Methods

destroy(ptr) click to toggle source

@api private

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

@param key [Botan::PK::PublicKey] the public key @param padding [String] the padding method name

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

Public Instance Methods

<<(msg)
Alias for: update
check_signature(signature) click to toggle source

Checks the signature against the previously-provided data.

@param signature [String] the signature to check @return [Boolean] true if the signature is valid

# File lib/botan/pk/op/verify.rb, line 56
def check_signature(signature)
  sig_buf = FFI::MemoryPointer.from_data(signature)
  # workaround 2.2.0 release bug
  if LibBotan::LIB_VERSION == [2, 2, 0]
    rc = LibBotan.botan_pk_op_verify_finish(@ptr, sig_buf, sig_buf.size)
    raise Botan::Error, 'FFI call unexpectedly failed' \
      unless [0, -1].include?(rc)
  else
    rc = Botan.call_ffi_rc(:botan_pk_op_verify_finish,
                           @ptr, sig_buf, sig_buf.size)
  end
  rc.zero?
end
inspect() click to toggle source
# File lib/botan/pk/op/verify.rb, line 70
def inspect
  Botan.inspect_ptr(self)
end
update(msg) click to toggle source

Adds more data to the message currently being verified.

@param msg [String] the data to add @return [self]

# File lib/botan/pk/op/verify.rb, line 46
def update(msg)
  msg_buf = FFI::MemoryPointer.from_data(msg)
  Botan.call_ffi(:botan_pk_op_verify_update, @ptr, msg_buf, msg_buf.size)
  self
end
Also aliased as: <<