New helper function factored out of ../scd and equipped with test code.

1 files changed, 108 insertions, 0 deletions

diff --git a/common/t-sexputil.c b/common/t-sexputil.c
index 26a6ace4b..05da162bf 100644
--- a/common/t-sexputil.c
+++ b/common/t-sexputil.c
@@ -69,6 +69,113 @@ test_hash_algo_from_sigval (void)
 }
 
 
+static void
+test_make_canon_sexp_from_rsa_pk (void)
+{
+  struct {
+    unsigned char *m;
+    size_t mlen;
+    unsigned char *e;
+    size_t elen;
+    unsigned char *result;
+    size_t resultlen;
+    gpg_err_code_t reverr;  /* Expected error from the reverse fucntion.  */
+  } tests[] = {
+    {
+      "\x82\xB4\x12\x48\x08\x48\xC0\x76\xAA\x8E\xF1\xF8\x7F\x5E\x9B\x89"
+      "\xA9\x62\x92\xA2\x16\x1B\xF5\x9F\xE1\x41\xF3\xF0\x42\xB5\x5C\x46"
+      "\xB8\x83\x9F\x39\x97\x73\xFF\xC5\xB2\xF4\x59\x5F\xBA\xC7\x0E\x03"
+      "\x9D\x27\xC0\x86\x37\x31\x46\xE0\xA1\xFE\xA1\x41\xD4\xE3\xE9\xB3"
+      "\x9B\xD5\x84\x65\xA5\x37\x35\x34\x07\x58\xB6\xBA\x21\xCA\x21\x72"
+      "\x4C\xF3\xFC\x91\x47\xD1\x3C\x1D\xA5\x9C\x38\x4D\x58\x39\x92\x16"
+      "\xB1\xE5\x43\xFE\xB5\x46\x4B\x43\xD1\x47\xB0\xE8\x2A\xDB\xF8\x34"
+      "\xB0\x5A\x22\x3D\x14\xBB\xEA\x63\x65\xA7\xF1\xF2\xF8\x97\x74\xA7",
+      128,
+      "\x40\x00\x00\x81",
+      4,
+      "\x28\x31\x30\x3a\x70\x75\x62\x6c\x69\x63\x2d\x6b\x65\x79\x28\x33"
+      "\x3a\x72\x73\x61\x28\x31\x3a\x6e\x31\x32\x39\x3a\x00\x82\xb4\x12"
+      "\x48\x08\x48\xc0\x76\xaa\x8e\xf1\xf8\x7f\x5e\x9b\x89\xa9\x62\x92"
+      "\xa2\x16\x1b\xf5\x9f\xe1\x41\xf3\xf0\x42\xb5\x5c\x46\xb8\x83\x9f"
+      "\x39\x97\x73\xff\xc5\xb2\xf4\x59\x5f\xba\xc7\x0e\x03\x9d\x27\xc0"
+      "\x86\x37\x31\x46\xe0\xa1\xfe\xa1\x41\xd4\xe3\xe9\xb3\x9b\xd5\x84"
+      "\x65\xa5\x37\x35\x34\x07\x58\xb6\xba\x21\xca\x21\x72\x4c\xf3\xfc"
+      "\x91\x47\xd1\x3c\x1d\xa5\x9c\x38\x4d\x58\x39\x92\x16\xb1\xe5\x43"
+      "\xfe\xb5\x46\x4b\x43\xd1\x47\xb0\xe8\x2a\xdb\xf8\x34\xb0\x5a\x22"
+      "\x3d\x14\xbb\xea\x63\x65\xa7\xf1\xf2\xf8\x97\x74\xa7\x29\x28\x31"
+      "\x3a\x65\x34\x3a\x40\x00\x00\x81\x29\x29\x29",
+      171
+    }, 
+    {
+      "\x63\xB4\x12\x48\x08\x48\xC0\x76\xAA\x8E\xF1\xF8\x7F\x5E\x9B\x89",
+      16,
+      "\x03",
+      1,
+      "\x28\x31\x30\x3a\x70\x75\x62\x6c\x69\x63\x2d\x6b\x65\x79\x28\x33"
+      "\x3a\x72\x73\x61\x28\x31\x3a\x6e\x31\x36\x3a\x63\xb4\x12\x48\x08"
+      "\x48\xc0\x76\xaa\x8e\xf1\xf8\x7f\x5e\x9b\x89\x29\x28\x31\x3a\x65"
+      "\x31\x3a\x03\x29\x29\x29",
+      54,
+    }, 
+    {
+      "",
+      0,
+      "",
+      0,
+      "\x28\x31\x30\x3a\x70\x75\x62\x6c\x69\x63\x2d\x6b\x65\x79\x28\x33"
+      "\x3a\x72\x73\x61\x28\x31\x3a\x6e\x31\x3a\x00\x29\x28\x31\x3a\x65"
+      "\x31\x3a\x00\x29\x29\x29",
+      38,
+      GPG_ERR_BAD_PUBKEY
+    },
+    {
+      NULL
+    }
+  };
+  int idx;
+  gpg_error_t err;
+  unsigned char *sexp;
+  size_t length;
+  const unsigned char *rsa_n, *rsa_e;
+  size_t rsa_n_len, rsa_e_len;
+
+  for (idx=0; tests[idx].m; idx++)
+    {
+      sexp = make_canon_sexp_from_rsa_pk (tests[idx].m, tests[idx].mlen,
+                                          tests[idx].e, tests[idx].elen,
+                                          &length);
+      if (!sexp)
+        {
+          fprintf (stderr, "%s:%d: out of core\n", __FILE__, __LINE__);
+          exit (1);
+        }
+      
+      if (length != tests[idx].resultlen)
+        fail (idx);
+      if (memcmp (sexp, tests[idx].result, tests[idx].resultlen))
+        fail (idx);
+
+      /* Test the reverse function.  */
+      err = get_rsa_pk_from_canon_sexp (sexp, length,
+                                        &rsa_n, &rsa_n_len,
+                                        &rsa_e, &rsa_e_len);
+      if (gpg_err_code (err) != tests[idx].reverr)
+        fail (idx);
+      if (!err)
+        {
+          if (tests[idx].mlen != rsa_n_len)
+            fail (idx);
+          if (memcmp (tests[idx].m, rsa_n, rsa_n_len))
+            fail (idx);
+          if (tests[idx].elen != rsa_e_len)
+            fail (idx);
+          if (memcmp (tests[idx].e, rsa_e, rsa_e_len))
+            fail (idx);
+        }
+
+      xfree (sexp);
+    }
+}
 
 
 int
@@ -78,6 +185,7 @@ main (int argc, char **argv)
   (void)argv;
 
   test_hash_algo_from_sigval ();
+  test_make_canon_sexp_from_rsa_pk ();
 
   return 0;
 }