diff options
Diffstat (limited to 'ext/openssl/lib/openssl.rb')
| -rw-r--r-- | ext/openssl/lib/openssl.rb | 39 |
1 files changed, 29 insertions, 10 deletions
diff --git a/ext/openssl/lib/openssl.rb b/ext/openssl/lib/openssl.rb index 0914282920..98fa8d39f2 100644 --- a/ext/openssl/lib/openssl.rb +++ b/ext/openssl/lib/openssl.rb @@ -1,4 +1,4 @@ -# frozen_string_literal: false +# frozen_string_literal: true =begin = Info 'OpenSSL for Ruby 2' project @@ -7,16 +7,35 @@ = Licence This program is licensed under the same licence as Ruby. - (See the file 'LICENCE'.) + (See the file 'COPYING'.) =end require 'openssl.so' -require 'openssl/bn' -require 'openssl/pkey' -require 'openssl/cipher' -require 'openssl/config' -require 'openssl/digest' -require 'openssl/x509' -require 'openssl/ssl' -require 'openssl/pkcs5' +require_relative 'openssl/bn' +require_relative 'openssl/cipher' +require_relative 'openssl/digest' +require_relative 'openssl/hmac' +require_relative 'openssl/pkcs5' +require_relative 'openssl/pkey' +require_relative 'openssl/ssl' +require_relative 'openssl/version' +require_relative 'openssl/x509' + +module OpenSSL + # :call-seq: + # OpenSSL.secure_compare(string, string) -> true or false + # + # Constant time memory comparison. Inputs are hashed using SHA-256 to mask + # the length of the secret. Returns +true+ if the strings are identical, + # +false+ otherwise. + # + # This method is expensive due to the SHA-256 hashing. In most cases, where + # the input lengths are known to be equal or are not sensitive, + # OpenSSL.fixed_length_secure_compare should be used instead. + def self.secure_compare(a, b) + hashed_a = OpenSSL::Digest.digest('SHA256', a) + hashed_b = OpenSSL::Digest.digest('SHA256', b) + OpenSSL.fixed_length_secure_compare(hashed_a, hashed_b) && a == b + end +end |