1 files changed, 5 insertions, 5 deletions
diff --git a/src/crypto/evp/p_hmac.c b/src/crypto/evp/p_hmac.c
index 21703ed..7d3254a 100644
--- a/src/crypto/evp/p_hmac.c
+++ b/src/crypto/evp/p_hmac.c
@@ -64,6 +64,7 @@
 #include <openssl/obj.h>
 
 #include "internal.h"
+#include "../digest/internal.h"
 
 
 typedef struct {
@@ -142,15 +143,14 @@ static int pkey_hmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) {
   return 1;
 }
 
-static int int_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
+static void int_update(EVP_MD_CTX *ctx, const void *data, size_t count) {
   HMAC_PKEY_CTX *hctx = ctx->pctx->data;
-  return HMAC_Update(&hctx->ctx, data, count);
+  HMAC_Update(&hctx->ctx, data, count);
 }
 
 static int hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx) {
-  HMAC_PKEY_CTX *hctx = ctx->data;
-
-  HMAC_CTX_set_flags(&hctx->ctx, mctx->flags & ~EVP_MD_CTX_FLAG_NO_INIT);
+  /* |mctx| gets repurposed as a hook to call |HMAC_Update|. Suppress the
+   * automatic setting of |mctx->update| and the rest of its initialization. */
   EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
   mctx->update = int_update;
   return 1;