Class: RubyClangFpe::FpeKey

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_clang_fpe/fpe_key.rb,
ext/ruby_clang_fpe/ruby_clang_fpe.c

Direct Known Subclasses

Fpe1Key, Fpe31Key, Fpe3Key

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.generate_ff1_key(key, tweak, radix) ⇒ Object 



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# File 'ext/ruby_clang_fpe/ruby_clang_fpe.c', line 46

static VALUE t_gen_ff1_key(VALUE self, VALUE key, VALUE tweak, VALUE radix)
{
  FPE_KEY *fpe_key;
  fpe_key = FPE_ff1_create_key(StringValuePtr(key), StringValuePtr(tweak), NUM2UINT(radix));
  if (fpe_key != NULL) {
    return TypedData_Wrap_Struct(rb_cFpe1, &fpe_type, fpe_key);
  } else {
    return Qnil;
  }
};

.generate_ff3_1_key(key, tweak, radix) ⇒ Object 



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# File 'ext/ruby_clang_fpe/ruby_clang_fpe.c', line 35

static VALUE t_gen_ff3_1_key(VALUE self, VALUE key, VALUE tweak, VALUE radix)
{
  FPE_KEY *fpe_key;
  fpe_key = FPE_ff3_1_create_key(StringValuePtr(key), StringValuePtr(tweak), NUM2UINT(radix));
  if (fpe_key != NULL) {
    return TypedData_Wrap_Struct(rb_cFpe3_1, &fpe_type, fpe_key);
  } else {
    return Qnil;
  }
};

.generate_ff3_key(key, tweak, radix) ⇒ Object

RubyClangFpe::Fpe1Key class



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# File 'ext/ruby_clang_fpe/ruby_clang_fpe.c', line 24

static VALUE t_gen_ff3_key(VALUE self, VALUE key, VALUE tweak, VALUE radix)
{
  FPE_KEY *fpe_key;
  fpe_key = FPE_ff3_create_key(StringValuePtr(key), StringValuePtr(tweak), NUM2UINT(radix));
  if (fpe_key != NULL) {
    return TypedData_Wrap_Struct(rb_cFpe3, &fpe_type, fpe_key);
  } else {
    return Qnil;
  }
};

.generate_key(type, key, tweak, radix) ⇒ Object 



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# File 'lib/ruby_clang_fpe/fpe_key.rb', line 3

def self.generate_key(type, key, tweak, radix)
  new_key = case type
            when :ff3
              if (tweak.size / 2) == 7
                generate_ff3_1_key(key, tweak, radix)
              else
                generate_ff3_key(key, tweak, radix)
              end
            when :ff1
              generate_ff1_key(key, tweak, radix)
            end

  new_key
end

Instance Method Details

#radix ⇒ Integer

Returns the integer value of the radix used to generate the key.

Returns:

  • (Integer) 


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# File 'ext/ruby_clang_fpe/ruby_clang_fpe.c', line 101

static VALUE t_radix(VALUE self)
{
  FPE_KEY *fpe_key_ptr;
  TypedData_Get_Struct(self, FPE_KEY, &fpe_type, fpe_key_ptr);
  return UINT2NUM(fpe_key_ptr->radix);
};

#tweak ⇒ Object 



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# File 'ext/ruby_clang_fpe/ruby_clang_fpe.c', line 108

static VALUE t_tweak(VALUE self)
{
  FPE_KEY *fpe_key_ptr;
  TypedData_Get_Struct(self, FPE_KEY, &fpe_type, fpe_key_ptr);
  return rb_str_new_cstr(fpe_key_ptr->tweak);
};