1 files changed, 17 insertions, 0 deletions
diff --git a/src/crypto/dsa/dsa_test.cc b/src/crypto/dsa/dsa_test.cc
index 295a7fd1..46821316 100644
--- a/src/crypto/dsa/dsa_test.cc
+++ b/src/crypto/dsa/dsa_test.cc
@@ -62,6 +62,8 @@
 #include <stdio.h>
 #include <string.h>
 
+#include <vector>
+
 #include <gtest/gtest.h>
 
 #include <openssl/bn.h>
@@ -315,3 +317,18 @@ TEST(DSATest, AllTests) {
     ADD_FAILURE() << "Tests failed";
   }
 }
+
+TEST(DSATest, InvalidGroup) {
+  bssl::UniquePtr<DSA> dsa = GetFIPSDSA();
+  ASSERT_TRUE(dsa);
+  BN_zero(dsa->g);
+
+  std::vector<uint8_t> sig(DSA_size(dsa.get()));
+  unsigned sig_len;
+  static const uint8_t kDigest[32] = {0};
+  EXPECT_FALSE(
+      DSA_sign(0, kDigest, sizeof(kDigest), sig.data(), &sig_len, dsa.get()));
+  uint32_t err = ERR_get_error();
+  EXPECT_EQ(ERR_LIB_DSA, ERR_GET_LIB(err));
+  EXPECT_EQ(DSA_R_INVALID_PARAMETERS, ERR_GET_REASON(err));
+}