Add Poly1305-AES (-Camellia, etc) MACs

* cipher/mac-internal.h (_gcry_mac_type_spec_poly1305_aes)
(_gcry_mac_type_spec_poly1305_camellia)
(_gcry_mac_type_spec_poly1305_twofish)
(_gcry_mac_type_spec_poly1305_serpent)
(_gcry_mac_type_spec_poly1305_seed): New.
* cipher/mac-poly1305.c (poly1305mac_context_s): Add 'hd' and
'nonce_set'.
(poly1305mac_open, poly1305mac_close, poly1305mac_setkey): Add handling
for Poly1305-*** MACs.
(poly1305mac_prepare_key, poly1305mac_setiv): New.
(poly1305mac_reset, poly1305mac_write, poly1305mac_read): Add handling
for 'nonce_set'.
(poly1305mac_ops): Add 'poly1305mac_setiv'.
(_gcry_mac_type_spec_poly1305_aes)
(_gcry_mac_type_spec_poly1305_camellia)
(_gcry_mac_type_spec_poly1305_twofish)
(_gcry_mac_type_spec_poly1305_serpent)
(_gcry_mac_type_spec_poly1305_seed): New.
* cipher/mac.c (mac_list): Add Poly1305-AES, Poly1305-Twofish,
Poly1305-Serpent, Poly1305-SEED and Poly1305-Camellia.
* src/gcrypt.h.in: Add 'GCRY_MAC_POLY1305_AES',
'GCRY_MAC_POLY1305_CAMELLIA', 'GCRY_MAC_POLY1305_TWOFISH',
'GCRY_MAC_POLY1305_SERPENT' and 'GCRY_MAC_POLY1305_SEED'.
* tests/basic.c (check_mac): Add Poly1305-AES test vectors.
* tests/bench-slope.c (bench_mac_init): Set IV for Poly1305-*** MACs.
* tests/bench-slope.c (mac_bench): Set IV for Poly1305-*** MACs.
--

Patch adds Bernstein's Poly1305-AES message authentication code to libgcrypt
and other variants of Poly1305-<128-bit block cipher>.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/benchmark.c b/tests/benchmark.c
index 9fd716dd..042e7214 100644
--- a/tests/benchmark.c
+++ b/tests/benchmark.c
@@ -509,6 +509,18 @@ mac_bench ( const char *algoname )
   for (i=0; i < bufsize; i++)
     buf[i] = i;
 
+  if (algo >= GCRY_MAC_POLY1305_AES && algo <= GCRY_MAC_POLY1305_SEED)
+    {
+      static const char iv[16] = { 1, 2, 3, 4, };
+      err = gcry_mac_setiv(hd, iv, sizeof(iv));
+      if (err)
+        {
+          fprintf (stderr, PGM ": error setting nonce for mac algorithm `%s': %s\n",
+                   algoname, gpg_strerror (err));
+          exit (1);
+        }
+    }
+
   printf ("%-20s", gcry_mac_algo_name (algo));
 
   start_timer ();