This reverts commit https://github.com/ruby/openssl/commit/9493d4a3bb26.

https://github.com/ruby/openssl/commit/b880a023dd

Current OpenSSL 3.0.x release has a regression with zero-length MAC
keys. While this issue should be fixed in a future release of OpenSSL,
we can use EVP_PKEY_new_raw_private_key() in place of the problematic
EVP_PKEY_new_mac_key() to avoid the issue. OpenSSL 3.0's man page
recommends using it regardless:

> EVP_PKEY_new_mac_key() works in the same way as
> EVP_PKEY_new_raw_private_key().  New applications should use
> EVP_PKEY_new_raw_private_key() instead.

Fixes https://github.com/ruby/openssl/issues/369#issuecomment-1224912710

https://github.com/ruby/openssl/commit/4293f18b1f

https://github.com/ruby/openssl/commit/626b0434a6

EVP_MD_CTX_copy() doesn't seem to work as intended on HMAC EVP_MD_CTX
on OpenSSL 3.0.0 and causes a double free. I haven't found the root
problem yet, but let's skip the test case for now.

https://github.com/ruby/openssl/commit/4699581639

OpenSSL::HMAC implements the similar interface as ::Digest. Let's add
base64digest methods to OpenSSL::HMAC, too, for feature parity.

https://github.com/ruby/openssl/commit/098bcb68af

https://github.com/ruby/openssl/commit/8253d7c9ce

Import the master branch of ruby/openssl for preparing to release openssl-2.2.0

Import Ruby/OpenSSL 2.1.0.beta1. The full commit log since v2.0.5
(imported by r59567) can be found at:

	https://github.com/ruby/openssl/compare/v2.0.5...v2.1.0.beta1

----------------------------------------------------------------
Antonio Terceiro (1):
      test/test_ssl: explicitly accept TLS 1.1 in corresponding test

Colby Swandale (1):
      document using secure protocol to fetch git master in Bundler

Colton Jenkins (1):
      Add fips_mode_get to return fips_mode

Kazuki Yamaguchi (85):
      Start preparing for 2.1.0
      Remove support for OpenSSL 0.9.8 and 1.0.0
      bn: refine tests
      bn: implement unary {plus,minus} operators for OpenSSL::BN
      bn: implement OpenSSL::BN#negative?
      Don't define main() when built with --enable-debug
      test: let OpenSSL::TestCase include OpenSSL::TestUtils
      test: prepare test PKey instances on demand
      Add OpenSSL.print_mem_leaks
      Enable OSSL_MDEBUG on CI builds
      ssl: move default DH parameters from OpenSSL::PKey::DH
      Make exceptions with the same format regardless of OpenSSL.debug
      ssl: show reason of 'certificate verify error' in exception message
      ssl: remove OpenSSL::ExtConfig::TLS_DH_anon_WITH_AES_256_GCM_SHA384
      ssl: do not confuse different ex_data index registries
      ssl: assume SSL/SSL_CTX always have a valid reference to the Ruby object
      Fix RDoc markup
      ssl: suppress compiler warning
      ext/openssl/deprecation.rb: remove broken-apple-openssl
      extconf.rb: print informative message if OpenSSL can't be found
      Rakefile: compile the extension before test
      kdf: introduce OpenSSL::KDF module
      ossl.h: add NUM2UINT64T() macro
      kdf: add scrypt
      Expand rb_define_copy_func() macro
      Expand FPTR_TO_FD() macro
      Remove SafeGet*() macros
      cipher: rename GetCipherPtr() to ossl_evp_get_cipherbyname()
      digest: rename GetDigestPtr() to ossl_evp_get_digestbyname()
      Add ossl_str_new(), an exception-safe rb_str_new()
      bio: simplify ossl_membio2str() using ossl_str_new()
      Remove unused functions and macros
      Drop support for LibreSSL 2.3
      ocsp: add OpenSSL::OCSP::Request#signed?
      asn1: infinite length -> indefinite length
      asn1: rearrange tests
      ssl: remove a needless NULL check in SSL::SSLContext#ciphers
      ssl: return nil in SSL::SSLSocket#cipher if session is not started
      asn1: remove an unnecessary function prototype
      asn1: require tag information when instantiating generic type
      asn1: initialize 'unused_bits' attribute of BitString with 0
      asn1: check for illegal 'unused_bits' value of BitString
      asn1: disallow NULL to be passed to asn1time_to_time()
      asn1: avoid truncating OID in OpenSSL::ASN1::ObjectId#oid
      asn1: allow constructed encoding with definite length form
      asn1: prohibit indefinite length form for primitive encoding
      asn1: allow tag number to be >= 32 for universal tag class
      asn1: use ossl_asn1_tag()
      asn1: clean up OpenSSL::ASN1::Constructive#to_der
      asn1: harmonize OpenSSL::ASN1::*#to_der
      asn1: prevent EOC octets from being in the middle of the content
      asn1: do not treat EOC octets as part of content octets
      x509name: add 'loc' and 'set' kwargs to OpenSSL::X509::Name#add_entry
      ssl: do not call session_remove_cb during GC
      Backport "Merge branch 'topic/test-memory-leak'" to maint
      cipher: update the documentation for Cipher#auth_tag=
      Rakefile: let sync:to_ruby know about test/openssl/fixtures
      test: fix formatting
      test/utils: remove OpenSSL::TestUtils.silent
      test/utils: add SSLTestCase#tls12_supported?
      test/utils: have start_server yield only the port number
      test/utils: do not set ecdh_curves in start_server
      test/utils: let server_loop close socket
      test/utils: improve error handling in start_server
      test/utils: add OpenSSL::TestUtils.openssl? and .libressl?
      test/utils: do not use DSA certificates in SSL tests
      test/test_ssl: remove test_invalid_shutdown_by_gc
      test/test_ssl: move test_multibyte_read_write to test_pair
      test/test_ssl_session: rearrange tests
      test/test_pair, test/test_ssl: fix for TLS 1.3
      ssl: remove useless call to rb_thread_wait_fd()
      ssl: fix NPN support
      ssl: mark OpenSSL::SSL::SSLContext::DEFAULT_{1024,2048} as private
      ssl: use 2048-bit group in the default tmp_dh_cb
      ssl: ensure that SSL option flags are non-negative
      ssl: update OpenSSL::SSL::OP_* flags
      ssl: prefer TLS_method() over SSLv23_method()
      ssl: add SSLContext#min_version= and #max_version=
      ssl: rework SSLContext#ssl_version=
      test/test_x509name: change script encoding to ASCII-8BIT
      x509name: refactor OpenSSL::X509::Name#to_s
      x509name: add OpenSSL::X509::Name#to_utf8
      x509name: add OpenSSL::X509::Name#inspect
      x509name: update regexp in OpenSSL::X509::Name.parse
      Ruby/OpenSSL 2.1.0.beta1

Marcus Stollsteimer (1):
      Fix rdoc for core Integer class

nobu (4):
      [DOC] {read,write}_nonblock with exception: false
      [DOC] keyword argument _exception_
      [DOC] mark up literals
      Revert r57690 except for read_nonblock

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59734 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Import Ruby/OpenSSL 2.0.0. The full commit history since 2.0.0 beta.2
(imported at r56098) can be found at:

  https://github.com/ruby/openssl/compare/v2.0.0.beta.2...v2.0.0

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56946 b2dd03c8-39d4-4d8f-98ff-823fe69b080e