apps: test dsa app PVK output

Cover the previously untested PVK code paths of the dsa app: round-trip
the test key through the PVK encoding (mirroring the existing rsa PVK
test, and skipped unless rc4, legacy and pvkkdf are enabled), and check
that requesting PVK output for a public key input is rejected.

Assisted-by: Claude:claude-opus-4-8
Reviewed-by: Matt Caswell <matt@openssl.foundation>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
MergeDate: Fri Jul  3 19:30:48 2026
(Merged from https://github.com/openssl/openssl/pull/31801)

diff --git a/test/recipes/15-test_dsa.t b/test/recipes/15-test_dsa.t
index b2747e3d46b34fe7af765d330f5f33d9fd4f2385..602e94e6a0f15dc990682d06e5c5c69ab6549098 100644 (file)
--- a/test/recipes/15-test_dsa.t
+++ b/test/recipes/15-test_dsa.t
@@ -17,7 +17,7 @@ use OpenSSL::Test::Utils;
 setup("test_dsa");
 
 plan skip_all => 'DSA is not supported in this build' if disabled('dsa');
-plan tests => 7;
+plan tests => 9;
 
 require_ok(srctop_file('test','recipes','tconversion.pl'));
 
@@ -45,3 +45,28 @@ subtest "dsa conversions using 'openssl pkey' -- public key" => sub {
                  -in => srctop_file("test","testdsapub.pem"),
                  -args => ["pkey", "-pubin", "-pubout"] );
 };
+
+SKIP: {
+    skip "Skipping PVK conversion test", 1
+        if disabled("rc4") || disabled("legacy") || disabled("pvkkdf");
+
+    subtest "dsa conversions using 'openssl dsa' -- PVK" => sub {
+        tconversion( -type => 'pvk', -prefix => 'dsa-pvk',
+                     -in => srctop_file("test", "testdsa.pem"),
+                     -args => ["dsa", "-passin", "pass:testpass",
+                               "-passout", "pass:testpass",
+                               "-provider", "default",
+                               "-provider", "legacy"] );
+    };
+}
+
+subtest "dsa PVK output is rejected for public key input" => sub {
+    plan tests => 1;
+
+    # Note: -noout would short-circuit before the format check, so request
+    # an actual encoding to reach the PVK-with-public-key rejection.
+    ok(!run(app(['openssl', 'dsa', '-pubin', '-outform', 'PVK',
+                 '-in', srctop_file("test", "testdsapub.pem"),
+                 '-out', 'dsa-pubin.pvk'])),
+       "-outform PVK with -pubin is rejected");
+};