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authorLuis R. Rodriguez <mcgrof@suse.com>2015-07-20 21:16:27 +0100
committerDavid Howells <dhowells@redhat.com>2015-08-07 16:26:13 +0100
commit23dfbbabbb3a62104b040b422121c84800312ad0 (patch)
tree12439e74a90588034ce8a0eab7f12a05f51c2a38
parent3f1e1bea34740069f70c6bc92d0f712345d5c28e (diff)
sign-file: Add option to only create signature file
Make the -d option (which currently isn't actually wired to anything) write out the PKCS#7 message as per the -p option and then exit without either modifying the source or writing out a compound file of the source, signature and metadata. This will be useful when firmware signature support is added upstream as firmware will be left intact, and we'll only require the signature file. The descriptor is implicit by file extension and the file's own size. Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> Signed-off-by: David Howells <dhowells@redhat.com>
-rwxr-xr-xscripts/sign-file.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/scripts/sign-file.c b/scripts/sign-file.c
index 5b8a6dda3235..39aaabe89388 100755
--- a/scripts/sign-file.c
+++ b/scripts/sign-file.c
@@ -86,13 +86,14 @@ int main(int argc, char **argv)
char *hash_algo = NULL;
char *private_key_name, *x509_name, *module_name, *dest_name;
bool save_pkcs7 = false, replace_orig;
+ bool sign_only = false;
unsigned char buf[4096];
unsigned long module_size, pkcs7_size;
const EVP_MD *digest_algo;
EVP_PKEY *private_key;
PKCS7 *pkcs7;
X509 *x509;
- BIO *b, *bd, *bm;
+ BIO *b, *bd = NULL, *bm;
int opt, n;
ERR_load_crypto_strings();
@@ -102,6 +103,7 @@ int main(int argc, char **argv)
opt = getopt(argc, argv, "dp");
switch (opt) {
case 'p': save_pkcs7 = true; break;
+ case 'd': sign_only = true; save_pkcs7 = true; break;
case -1: break;
default: format();
}
@@ -148,8 +150,10 @@ int main(int argc, char **argv)
/* Open the destination file now so that we can shovel the module data
* across as we read it.
*/
- bd = BIO_new_file(dest_name, "wb");
- ERR(!bd, "%s", dest_name);
+ if (!sign_only) {
+ bd = BIO_new_file(dest_name, "wb");
+ ERR(!bd, "%s", dest_name);
+ }
/* Digest the module data. */
OpenSSL_add_all_digests();
@@ -180,6 +184,9 @@ int main(int argc, char **argv)
BIO_free(b);
}
+ if (sign_only)
+ return 0;
+
/* Append the marker and the PKCS#7 message to the destination file */
ERR(BIO_reset(bm) < 0, "%s", module_name);
while ((n = BIO_read(bm, buf, sizeof(buf))),

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