class OAuth::Signature::RSA::SHA1

   # File lib/oauth/signature/rsa/sha1.rb
11 def ==(other)
12   decoded = Base64.decode64(other.is_a?(Array) ? other.first : other)
13   public_key.verify(OpenSSL::Digest.new("SHA1"), decoded, signature_base_string)
14 rescue OpenSSL::PKey::PKeyError
15   private_key = private_key_from_consumer_secret
16   raise unless private_key
17 
18   private_key.sign(OpenSSL::Digest.new("SHA1"), signature_base_string) == decoded
19 end

   # File lib/oauth/signature/rsa/sha1.rb
34 def body_hash
35   # Use SHA1 body hash with compatibility across OpenSSL versions
36   data = request.body || ""
37   begin
38     digest_bytes = OpenSSL::Digest.digest("SHA1", data)
39   rescue
40     digest_bytes = ::Digest::SHA1.digest(data)
41   end
42   Base64.encode64(digest_bytes).chomp.delete("\n")
43 end

   # File lib/oauth/signature/rsa/sha1.rb
21 def public_key
22   case consumer_secret
23   when String
24     decode_public_key
25   when OpenSSL::X509::Certificate
26     consumer_secret.public_key
27   when OpenSSL::PKey::RSA
28     consumer_secret.public_key
29   else
30     consumer_secret
31   end
32 end

   # File lib/oauth/signature/rsa/sha1.rb
47 def decode_public_key
48   case consumer_secret
49   when /-----BEGIN CERTIFICATE-----/
50     OpenSSL::X509::Certificate.new(consumer_secret).public_key
51   else
52     OpenSSL::PKey::RSA.new(consumer_secret).public_key
53   end
54 end

   # File lib/oauth/signature/rsa/sha1.rb
67 def digest
68   private_key = OpenSSL::PKey::RSA.new(
69     if options[:private_key_file]
70       File.read(options[:private_key_file])
71     elsif options[:private_key]
72       options[:private_key]
73     else
74       consumer_secret
75     end
76   )
77 
78   private_key.sign(OpenSSL::Digest.new("SHA1"), signature_base_string)
79 end

   # File lib/oauth/signature/rsa/sha1.rb
56 def private_key_from_consumer_secret
57   case consumer_secret
58   when String
59     return nil if consumer_secret =~ /-----BEGIN CERTIFICATE-----/
60 
61     OpenSSL::PKey::RSA.new(consumer_secret)
62   when OpenSSL::PKey::RSA
63     consumer_secret
64   end
65 end