dsa: update command line app to use EVP calls

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11225)

1 files changed, 10 insertions, 16 deletions

diff --git a/apps/dsa.c b/apps/dsa.c
index 200e959..f4677dd 100644
--- a/apps/dsa.c
+++ b/apps/dsa.c
@@ -7,9 +7,6 @@
  * https://www.openssl.org/source/license.html
  */
 
-/* We need to use the deprecated DSA_print */
-#define OPENSSL_SUPPRESS_DEPRECATED
-
 #include <openssl/opensslconf.h>
 
 #include <stdio.h>
@@ -73,6 +70,7 @@ int dsa_main(int argc, char **argv)
     BIO *out = NULL;
     DSA *dsa = NULL;
     ENGINE *e = NULL;
+    EVP_PKEY *pkey = NULL;
     const EVP_CIPHER *enc = NULL;
     char *infile = NULL, *outfile = NULL, *prog;
     char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
@@ -166,19 +164,13 @@ int dsa_main(int argc, char **argv)
     }
 
     BIO_printf(bio_err, "read DSA key\n");
-    {
-        EVP_PKEY *pkey;
-
-        if (pubin)
-            pkey = load_pubkey(infile, informat, 1, passin, e, "Public Key");
-        else
-            pkey = load_key(infile, informat, 1, passin, e, "Private Key");
+    if (pubin)
+        pkey = load_pubkey(infile, informat, 1, passin, e, "Public Key");
+    else
+        pkey = load_key(infile, informat, 1, passin, e, "Private Key");
 
-        if (pkey != NULL) {
-            dsa = EVP_PKEY_get1_DSA(pkey);
-            EVP_PKEY_free(pkey);
-        }
-    }
+    if (pkey != NULL)
+        dsa = EVP_PKEY_get1_DSA(pkey);
 
     if (dsa == NULL) {
         BIO_printf(bio_err, "unable to load Key\n");
@@ -192,7 +184,8 @@ int dsa_main(int argc, char **argv)
 
     if (text) {
         assert(pubin || private);
-        if (!DSA_print(out, dsa, 0)) {
+        if ((pubin && EVP_PKEY_print_public(out, pkey, 0, NULL) <= 0)
+            || (!pubin && EVP_PKEY_print_private(out, pkey, 0, NULL) <= 0)) {
             perror(outfile);
             ERR_print_errors(bio_err);
             goto end;
@@ -269,6 +262,7 @@ int dsa_main(int argc, char **argv)
     ret = 0;
  end:
     BIO_free_all(out);
+    EVP_PKEY_free(pkey);
     DSA_free(dsa);
     release_engine(e);
     OPENSSL_free(passin);