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-rw-r--r--src/x509.erl6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/x509.erl b/src/x509.erl
index 8b1211d..9b6b386 100644
--- a/src/x509.erl
+++ b/src/x509.erl
@@ -2,7 +2,7 @@
%%% See LICENSE for licensing information.
-module(x509).
--export([normalise_chain/2]).
+-export([normalise_chain/2, cert_string/1]).
-include_lib("public_key/include/public_key.hrl").
@@ -84,6 +84,10 @@ public_key(#'OTPCertificate'{
subjectPublicKey = Key}}}) ->
Key.
+cert_string(Der) ->
+ lists:flatten([io_lib:format("~2.16.0B", [X]) ||
+ X <- binary_to_list(crypto:hash(sha, Der))]).
+
%%%%%%%%%%%%%%%%%%%%
%% Precertificates according to draft-ietf-trans-rfc6962-bis-04.