kdf_mpi: be explicit about ctr size

diff --git a/src/util/crypto_kdf.c b/src/util/crypto_kdf.c
index 43a9731ff56b88b09f055ee4029d564215b6bfce..92b2cf5c2663f47bf29dabf7e4a7c69f049550d2 100644 (file)
--- a/src/util/crypto_kdf.c
+++ b/src/util/crypto_kdf.c
@@ -132,7 +132,7 @@ GNUNET_CRYPTO_kdf_mod_mpi (gcry_mpi_t *r,
   gcry_error_t rc;
   unsigned int nbits;
   size_t rsize;
-  unsigned int ctr;
+  uint32_t ctr;
 
   nbits = gcry_mpi_get_nbits (n);
   /* GNUNET_assert (nbits > 512); */