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add option to exclude public key from EC keys

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Reviewed-by: Rich Salz <rsalz@openssl.org>
This commit is contained in:
Dr. Stephen Henson 2016-01-27 23:45:15 +00:00
parent f6de4eb77f
commit 167548061d
2 changed files with 15 additions and 1 deletions
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11
apps/ec.c
View file

@ -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) {
@ -189,6 +192,9 @@ 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();
@ -236,6 +242,9 @@ 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(pubin || private);
if (!EC_KEY_print(out, eckey, 0)) {

5
doc/apps/ec.pod
View file

@ -23,6 +23,7 @@ B<openssl> B<ec>
[B<-pubout>]
[B<-conv_form arg>]
[B<-param_enc arg>]
[B<-no_public>]
[B<-engine id>]
=head1 DESCRIPTION
@ -128,6 +129,10 @@ EC parameters structures). The default value is B<named_curve>.
B<Note> the B<implicitlyCA> alternative ,as specified in RFC 3279,
is currently not implemented in OpenSSL.
=item B<-no_public>
This option omits the public key components from the private key output.
=item B<-engine id>
specifying an engine (by its unique B<id> string) will cause B<ec>