1 files changed, 11 insertions, 0 deletions
diff --git a/ext/openssl/ossl_digest.c b/ext/openssl/ossl_digest.c
index ab165c4a84..8fd6b75c36 100644
--- a/ext/openssl/ossl_digest.c
+++ b/ext/openssl/ossl_digest.c
@@ -403,6 +403,17 @@ Init_ossl_digest()
      *   sha256 << data2
      *   sha256 << data3
      *   digest = sha256.digest
+     *
+     * === Reuse a Digest instance
+     *
+     *   data1 = File.read('file1')
+     *   sha256 = OpenSSL::Digest::SHA256.new
+     *   digest1 = sha256.digest(data1)
+     *   
+     *   data2 = File.read('file2')
+     *   sha256.reset
+     *   digest2 = sha256.digest(data2)
+     *
      */
     cDigest = rb_define_class_under(mOSSL, "Digest", rb_path2class("Digest::Class"));
     /* Document-class: OpenSSL::Digest::DigestError