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require 'oauth/signature/base'
module OAuth::Signature::RSA
class SHA1 < OAuth::Signature::Base
implements 'rsa-sha1'
def ==(cmp_signature)
public_key.verify(OpenSSL::Digest::SHA1.new, Base64.decode64(cmp_signature.is_a?(Array) ? cmp_signature.first : cmp_signature), signature_base_string)
end
def public_key
if consumer_secret.is_a?(String)
decode_public_key
elsif consumer_secret.is_a?(OpenSSL::X509::Certificate)
consumer_secret.public_key
else
consumer_secret
end
end
def body_hash
Base64.encode64(OpenSSL::Digest::SHA1.digest(request.body || '')).chomp.gsub(/\n/,'')
end
private
def decode_public_key
case consumer_secret
when /-----BEGIN CERTIFICATE-----/
OpenSSL::X509::Certificate.new( consumer_secret).public_key
else
OpenSSL::PKey::RSA.new( consumer_secret)
end
end
def digest
private_key = OpenSSL::PKey::RSA.new(
if options[:private_key_file]
IO.read(options[:private_key_file])
elsif options[:private_key]
options[:private_key]
else
consumer_secret
end
)
private_key.sign(OpenSSL::Digest::SHA1.new, signature_base_string)
end
end
end
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