add option to exclude public key from EC keys

[openssl.git] / apps / ec.c

diff --git a/apps/ec.c b/apps/ec.c
index 3c38e6157bc44f28e53bab9862cc5df18f5abbaa..a0a96b7ab434ee820fcb534480fb76bcb3a0b09f 100644 (file)
--- a/apps/ec.c
+++ b/apps/ec.c
@@ -83,7 +83,8 @@ typedef enum OPTION_choice {
     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
     OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_IN, OPT_OUT,
     OPT_NOOUT, OPT_TEXT, OPT_PARAM_OUT, OPT_PUBIN, OPT_PUBOUT,
-    OPT_PASSIN, OPT_PASSOUT, OPT_PARAM_ENC, OPT_CONV_FORM, OPT_CIPHER
+    OPT_PASSIN, OPT_PASSOUT, OPT_PARAM_ENC, OPT_CONV_FORM, OPT_CIPHER,
+    OPT_NO_PUBLIC
 } OPTION_CHOICE;
 
 OPTIONS ec_options[] = {
@@ -97,6 +98,7 @@ OPTIONS ec_options[] = {
     {"param_out", OPT_PARAM_OUT, '-', "Print the elliptic curve parameters"},
     {"pubin", OPT_PUBIN, '-'},
     {"pubout", OPT_PUBOUT, '-'},
+    {"no_public", OPT_NO_PUBLIC, '-', "exclude public key from private key"},
     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
     {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
     {"param_enc", OPT_PARAM_ENC, 's',
@@ -122,6 +124,7 @@ int ec_main(int argc, char **argv)
     int asn1_flag = OPENSSL_EC_NAMED_CURVE, new_form = 0, new_asn1_flag = 0;
     int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, noout = 0;
     int pubin = 0, pubout = 0, param_out = 0, i, ret = 1, private = 0;
+    int no_public = 0;
 
     prog = opt_init(argc, argv, ec_options);
     while ((o = opt_next()) != OPT_EOF) {
@@ -189,12 +192,15 @@ int ec_main(int argc, char **argv)
             new_asn1_flag = 1;
             asn1_flag = i;
             break;
+        case OPT_NO_PUBLIC:
+            no_public = 1;
+            break;
         }
     }
     argc = opt_num_rest();
     argv = opt_rest();
     private = param_out || pubin || pubout ? 0 : 1;
-    if (text)
+    if (text && !pubin)
         private = 1;
 
     if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {
@@ -236,8 +242,11 @@ int ec_main(int argc, char **argv)
     if (new_asn1_flag)
         EC_KEY_set_asn1_flag(eckey, asn1_flag);
 
+    if (no_public)
+        EC_KEY_set_enc_flags(eckey, EC_PKEY_NO_PUBKEY);
+
     if (text) {
-        assert(private);
+        assert(pubin || private);
         if (!EC_KEY_print(out, eckey, 0)) {
             perror(outfile);
             ERR_print_errors(bio_err);