1 files changed, 10 insertions, 5 deletions
diff --git a/ext/openssl/ossl_digest.h b/ext/openssl/ossl_digest.h
index 50bf5666a3..9c3bb2b149 100644
--- a/ext/openssl/ossl_digest.h
+++ b/ext/openssl/ossl_digest.h
@@ -5,15 +5,20 @@
  */
 /*
  * This program is licensed under the same licence as Ruby.
- * (See the file 'LICENCE'.)
+ * (See the file 'COPYING'.)
  */
 #if !defined(_OSSL_DIGEST_H_)
 #define _OSSL_DIGEST_H_
 
-extern VALUE cDigest;
-extern VALUE eDigestError;
-
-const EVP_MD *ossl_evp_get_digestbyname(VALUE);
+/*
+ * Gets EVP_MD from a String or an OpenSSL::Digest instance (discouraged, but
+ * still supported for compatibility). A holder object is created if the EVP_MD
+ * is a "fetched" algorithm.
+ */
+const EVP_MD *ossl_evp_md_fetch(VALUE obj, volatile VALUE *holder);
+/*
+ * This is meant for OpenSSL::Engine#digest. EVP_MD must not be a fetched one.
+ */
 VALUE ossl_digest_new(const EVP_MD *);
 void Init_ossl_digest(void);