New tools to help debug vboot failures.

This adds some tools to help us figure out why a particular kernel isn't
booting. Often we suspect it's because it was signed with the wrong keys, or
has flags restricting its use to certain boot modes. This change adds some
tools to extract and display all the keys from the BIOS, and try them on the
various kernels. We also display the sha1sum of all the keys we find, to
make comparing them easier.

Change-Id: I38e447bf95cb6c3a0b87aa949611bb135f2f94b4

BUG=chromeos-partner:888
TEST=manual

To test, obtain a root shell, and run dev_debug_vboot. You should see lots
of useful information go by.

Review URL: http://codereview.chromium.org/3303018

1 files changed, 2 insertions, 11 deletions

diff --git a/utility/vbutil_key.c b/utility/vbutil_key.c
index c076bfff..38d90003 100644
--- a/utility/vbutil_key.c
+++ b/utility/vbutil_key.c
@@ -108,15 +108,6 @@ static int Pack(const char *infile, const char *outfile, uint64_t algorithm,
 }
 
 
-static void PrintDigest(const uint8_t* buf, uint64_t buflen) {
-  uint8_t *digest = DigestBuf(buf, buflen, SHA1_DIGEST_ALGORITHM);
-  int i;
-  for (i=0; i<SHA1_DIGEST_SIZE; i++)
-    printf("%02x", digest[i]);
-  printf("\n");
-  Free(digest);
-}
-
 /* Unpack a .vbpubk or .vbprivk */
 static int Unpack(const char *infile, const char *outfile) {
   VbPublicKey* pubkey;
@@ -134,7 +125,8 @@ static int Unpack(const char *infile, const char *outfile) {
             algo_strings[pubkey->algorithm] : "(invalid)"));
     printf("Key Version:       %" PRIu64 "\n", pubkey->key_version);
     printf("Key sha1sum:       ");
-    PrintDigest(((uint8_t *)pubkey) + pubkey->key_offset, pubkey->key_size);
+    PrintPubKeySha1Sum(pubkey);
+    printf("\n");
     if (outfile) {
       if (0 != PublicKeyWrite(outfile, pubkey)) {
         fprintf(stderr, "vbutil_key: Error writing key copy.\n");
@@ -146,7 +138,6 @@ static int Unpack(const char *infile, const char *outfile) {
     return 0;
   }
 
-
   if ((privkey = PrivateKeyRead(infile))) {
     printf("Private Key file:  %s\n", infile);
     printf("Algorithm:         %" PRIu64 " %s\n", privkey->algorithm,