autoloads for sha2 classes in favor of handling in
const_missing(), to work around a problem exposed on OS X.
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optimization.
* ext/digest/digest.c (rb_digest_instance_equal): Allow comparing
a digest instance with another of a different class.
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rb_ to avoid name clash in writing extensions.
* ext/digest: Introduce Digest::Class and Digest::Instance for
ease of implementing subclasses and add-ons, inspried by
gotoyuzo.
* ext/digest: The Digest::Instance module now requires and assumes
that any instance be resettable and clonable, and add some
convenient instance methods such as "new()", for creating a new
copy, parameter taking "digest()" and "hexdigest()", for instant
calculation. These methods make digest instances work just like
digest classes.
* ext/digest/sha2/lib/digest/sha2.rb:
Add the Digest::SHA2 class to wrap up SHA2 variants: SHA256,
SHA384 and SHA512, hoping this module would make a decent
example of a digest subclass written in Ruby.
* ext/digest/lib/digest.rb: Adjust autoload entries for SHA2
classes.
* ext/digest/lib/digest/hmac.rb: Follow the framework updates.
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ext/digest/md5/md5init.c, ext/digest/rmd160/rmd160init.c,
ext/digest/sha1/sha1init.c, ext/digest/sha2/sha2init.c:
Introduce API versioning.
* ext/digest/digest.c, ext/digest/digest.h,
ext/digest/md5/md5init.c, ext/digest/rmd160/rmd160init.c,
ext/digest/sha1/sha1init.c, ext/digest/sha2/sha2init.c: Remove
the constants DIGEST_LENGTH and BLOCK_LENGTH and turn them into
instance methods digest_length() and block_length(). Class
methods with the same names are also provided, which take extra
parameters for a digest method.
* ext/digest/lib/digest/hmac.rb: Completely redesign the API which
is similar to Perl's, now that Digest classes can take hashing
parameters.
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digest modules when a specified digest class is missing.
* ext/digest/lib/digest.rb: Define Digest(name) for ease of
dynamically selecting a hashing algorithm.
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breakage. Point out by NAKAMURA Usaku in [ruby-dev:29619].
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project.
ext/digest:
This module provides the module Digest and the abstract class
Digest::Base.
ext/digest/md5 (which obsoletes ext/md5):
This module provides the class Digest::MD5 which implements the
MD5 Message-Digest Algorithm.
ext/digest/rmd160:
This module provides the class Digest::RMD160 which implements the
RIPEMD-160 cryptographic hash function.
ext/digest/sha1 (which obsoletes ext/sha1):
This module provides the class Digest::SHA1 which implements the
SHA-1 Secure Hash Algorithm.
ext/digest/sha2:
This module provides the classes Digest::SHA256, Digest::SHA384
and Digest::SHA512 which implement the SHA-256, SHA-384 and
SHA-512 Secure Hash Algorithms, respectively.
lib/md5.rb, lib/sha1.rb:
These files are provided for backward compatibility.
All these classes have the common API, which previously ext/md5 and
ext/sha1 modules provided. While the new API keeps 100% backward
compatibility, it has been enriched with several utility methods.
Read digest.txt for further details.
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