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-rw-r--r--lib/leap_cli/util/x509.rb32
1 files changed, 32 insertions, 0 deletions
diff --git a/lib/leap_cli/util/x509.rb b/lib/leap_cli/util/x509.rb
new file mode 100644
index 0000000..9ecd92d
--- /dev/null
+++ b/lib/leap_cli/util/x509.rb
@@ -0,0 +1,32 @@
+require 'openssl'
+require 'certificate_authority'
+require 'digest'
+require 'digest/md5'
+require 'digest/sha1'
+
+module LeapCli; module X509
+ extend self
+
+ #
+ # returns a fingerprint of a x509 certificate
+ #
+ def fingerprint(digest, cert_file)
+ if cert_file.is_a? String
+ cert = OpenSSL::X509::Certificate.new(Util.read_file!(cert_file))
+ elsif cert_file.is_a? OpenSSL::X509::Certificate
+ cert = cert_file
+ elsif cert_file.is_a? CertificateAuthority::Certificate
+ cert = cert_file.openssl_body
+ end
+ digester = case digest
+ when "MD5" then Digest::MD5.new
+ when "SHA1" then Digest::SHA1.new
+ when "SHA256" then Digest::SHA256.new
+ when "SHA384" then Digest::SHA384.new
+ when "SHA512" then Digest::SHA512.new
+ end
+ digester.hexdigest(cert.to_der)
+ end
+
+
+end; end