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-rw-r--r--lib/algorithms/publickey.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/algorithms/publickey.c b/lib/algorithms/publickey.c
index 0bd8f0fbae..59d28af956 100644
--- a/lib/algorithms/publickey.c
+++ b/lib/algorithms/publickey.c
@@ -314,6 +314,9 @@ const char *gnutls_pk_get_oid(gnutls_pk_algorithm_t algorithm)
const char *ret = NULL;
const gnutls_pk_entry *p;
+ if (algorithm == 0)
+ return NULL;
+
for (p = pk_algorithms; p->name != NULL; p++)
if (p->id == algorithm) {
ret = p->oid;