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Class: Digest::Class

Relationships & Source Files
Extension / Inclusion / Inheritance Descendants
Subclasses:
Base, SHA384, SHA512
Super Chains via Extension / Inclusion / Inheritance
Instance Chain:
self, Instance
Inherits: Object
Defined in: ext/digest/digest.c,
ext/digest/digest.c,
ext/digest/bubblebabble/bubblebabble.c,
ext/digest/lib/digest.rb

Overview

This module stands as a base class for digest implementation classes.

Class Method Summary

Instance Method Summary

Instance - Included

#<<

Updates the digest using a given string and returns self.
#==

If a string is given, checks whether it is equal to the hex-encoded hash value of the digest object.
#base64digest

If none is given, returns the resulting hash value of the digest in a base64 encoded form, keeping the digest’s state.
#base64digest!

Returns the resulting hash value and resets the digest to the initial state.
#block_length

Returns the block length of the digest.
#bubblebabble

Returns the resulting hash value in a Bubblebabble encoded form.
#digest

If none is given, returns the resulting hash value of the digest, keeping the digest’s state.
#digest!

Returns the resulting hash value and resets the digest to the initial state.
#digest_length

Returns the length of the hash value of the digest.
#file

Updates the digest with the contents of a given file name and returns self.
#hexdigest

If none is given, returns the resulting hash value of the digest in a hex-encoded form, keeping the digest’s state.
#hexdigest!

Returns the resulting hash value in a hex-encoded form and resets the digest to the initial state.
#inspect

Creates a printable version of the digest object.
#length

Returns digest_obj.digest_length().
#new

Returns a new, initialized copy of the digest object.
#reset

Resets the digest to the initial state and returns self.
#size

Alias for Instance#length.
#to_s

Returns digest_obj.hexdigest().
#update

Alias for Instance#<<.
#finish

Finishes the digest and returns the resulting hash value.

Constructor Details

.new

This method is for internal use only.
[ GitHub ] 

  


# File 'ext/digest/digest.c', line 493



static VALUE
rb_digest_class_init(VALUE self)
{
    return self;
}


  







Class Method Details



  

    .base64digest(str, *args)  
  



  

    

Returns the base64 encoded hash value of a given string.  The return value is properly padded with ‘=’ and contains no line feeds.


  



  [ GitHub ]


  

  


# File 'ext/digest/lib/digest.rb', line 55



def self.base64digest(str, *args)
  [digest(str, *args)].pack('m0')
end


  








  

    .digest(string, *parameters)  ⇒ hash_string   



  

    

Returns the hash value of a given string.  This is equivalent to Class.new(*parameters).digest(string), where extra parameters, if any, are passed through to the constructor and the string is passed to #digest().


  



  [ GitHub ]


  

  


# File 'ext/digest/digest.c', line 457



static VALUE
rb_digest_class_s_digest(int argc, VALUE *argv, VALUE klass)
{
    VALUE str;
    volatile VALUE obj;

    if (argc < 1) {
        rb_raise(rb_eArgError, "no data given");
    }

    str = *argv++;
    argc--;

    StringValue(str);

    obj = rb_obj_alloc(klass);
    rb_obj_call_init(obj, argc, argv);

    return rb_funcall(obj, id_digest, 1, str);
}


  








  

    .file(name, *args)  
  



  

    

Creates a digest object and reads a given file, name. Optional arguments are passed to the constructor of the digest class.



p Digest::SHA256.file("X11R6.8.2-src.tar.bz2").hexdigest
# => "f02e3c85572dc9ad7cb77c2a638e3be24cc1b5bea9fdbb0b0299c9668475c534"


  



  [ GitHub ]


  

  


# File 'ext/digest/lib/digest.rb', line 48



def self.file(name, *args)
  new(*args).file(name)
end


  








  

    .hexdigest(string[, ...])  ⇒ hash_string   



  

    

Returns the hex-encoded hash value of a given string.  This is almost equivalent to Digest.hexencode(Digest::Class.new(*parameters).digest(string)).


  



  [ GitHub ]


  

  


# File 'ext/digest/digest.c', line 486



static VALUE
rb_digest_class_s_hexdigest(int argc, VALUE *argv, VALUE klass)
{
    return hexencode_str_new(rb_funcallv(klass, id_digest, argc, argv));
}