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-rw-r--r--lib/crypto/c_src/dh.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/crypto/c_src/dh.c b/lib/crypto/c_src/dh.c
index 4bcab0ec6e..92a339ab5f 100644
--- a/lib/crypto/c_src/dh.c
+++ b/lib/crypto/c_src/dh.c
@@ -41,7 +41,7 @@ ERL_NIF_TERM dh_compute_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM arg
/* Has 3_0 */
ERL_NIF_TERM dh_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{/* (PrivKey|undefined, DHParams=[P,G], 0, Len|0) */
- unsigned long len = 0;
+ ErlNifUInt64 len = 0;
int i = 0;
OSSL_PARAM params[8];
EVP_PKEY *pkey = NULL, *pkey_gen = NULL;
@@ -84,7 +84,7 @@ ERL_NIF_TERM dh_generate_key_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM ar
*/
/* argv[3] is the length of the private key that is to be generated */
- if (!enif_get_ulong(env, argv[3], &len) ||
+ if (!enif_get_uint64(env, argv[3], &len) ||
(len > LONG_MAX) ) {
ret = EXCP_BADARG_N(env, 3, "Bad value of length element");
goto done;