* ext/digest/lib/digest.rb (Digest()): This function should now be
thread-safe. If you have a problem with regard to on-demand
loading under a multi-threaded environment, preload "digest/*"
modules on boot or use this method instead of directly
referencing Digest::*. [Bug #9494]
cf. https://github.com/aws/aws-sdk-ruby/issues/525
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Improved examples for Digest overview and fixed a broken example in
Digest::HMAC overview. This patch also adds a description of
Digest::SHA256.bubblebabble to the Digest overview.
Patched by @stomar [Bug #9027]
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arguments that are passed to the constructor of the digest
class.
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autoloads for sha2 classes in favor of handling in
const_missing(), to work around a problem exposed on OS X.
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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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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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