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-rw-r--r--lib/curl_sha256.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/curl_sha256.h b/lib/curl_sha256.h
index 0fceb6329..b4579d769 100644
--- a/lib/curl_sha256.h
+++ b/lib/curl_sha256.h
@@ -24,6 +24,9 @@
***************************************************************************/
#ifndef CURL_DISABLE_CRYPTO_AUTH
+#include "curl_hmac.h"
+
+extern const struct HMAC_params Curl_HMAC_SHA256[1];
#define SHA256_DIGEST_LENGTH 32