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The OpenSSL engine of Digest uses the low-level API of OpenSSL, whose
use has been discouraged for years for multiple reasons.
A long-standing issue on a FIPS-enabled system is that using ::Digest
results in crashing the Ruby process, because the low-level API lacks
the mechanism to report an error (the policy violation) and thus kills
the process as a last resort[1][2]. Also, the upcoming OpenSSL 3.0 will
deprecate it for future removal[3]. Compiling with
-Wdeprecated-declarations will start to emit warnings.
A proper fix for this is to make it use the EVP API instead. This is a
non-trivial work as it requires backwards-incompatible changes to the
framework interface of Digest::Base and rb_digest_metadata_t.
It is more than 15 years ago that the openssl library became part of the
standard library. It has implemented the exactly same functionality as
OpenSSL::Digest, in fact, as a subclass of Digest::Class. There is not
much point in having an identical code in the digest library. Let's
just get rid of OpenSSL within digest. This leaves the C implementations
and the CommonCrypto engine for Apple systems.
A patch is being prepared for the openssl library to provide ::Digest
constants for better performance[4].
[1] https://bugs.ruby-lang.org/issues/6946
[2] https://bugs.ruby-lang.org/issues/13681
[3] https://www.openssl.org/docs/OpenSSL300Design.html
[4] https://github.com/ruby/openssl/pull/377
[Feature #10452][ruby-core:66001][ci skip]
* remove HMAC from list of digest algorithms,
* add MD5 in list of digest algorithms,
* add information about writing a C digest implementation using Digest::Base,
* add documentation for Digest::Base public methods.
* ext/digest/md5/md5init.c: add examples for MD5.
* ext/digest/rmd160/rmd160init.c: add examples for Digest::RMD160.
* ext/digest/sha1/sha1init.c: add examples for Digest::SHA1.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56455 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* lib/mkmf.rb (create_makefile): store $headers in LOCAL_HDRS for
depend files.
* ext/digest/digest_conf.rb (digest_conf): add implementation
specific headers to $header.
* ext/digest/{md5,rmd160,sha1,sha2}/depend: add LOCAL_HDRS to the
dependencies.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55588 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/digest/{md5,rmd160,sha1,sha2}/extconf.rb: configure OpenSSL
only if bundled libraries is not used, so that OpenSSL is not
linked unnecessarily. [ruby-core:65404] [Bug #10324]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47802 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/digest/rmd160/extconf.rb: fix transform function name to
check. [ruby-core:65091] [Bug #10252]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47801 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/digest: make built-in digest function implementations
indicate success or failure of init and final functions.
[ruby-core:61614] [Bug #9659]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46827 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
卜部昌平
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Matt Valentine-House
Hiroshi SHIBATA
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Takashi Kokubun
Peter Zhu
Akinori MUSHA
Pavel Rosický
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