Add GMAC to MAC API

* cipher/Makefile.am: Add 'mac-gmac.c'.
* cipher/mac-gmac.c: New.
* cipher/mac-internal.h (gcry_mac_handle): Add 'u.gcm'.
(_gcry_mac_type_spec_gmac_aes, _gcry_mac_type_spec_gmac_twofish)
(_gcry_mac_type_spec_gmac_serpent, _gcry_mac_type_spec_gmac_seed)
(_gcry_mac_type_spec_gmac_camellia): New externs.
* cipher/mac.c (mac_list): Add GMAC specifications.
* doc/gcrypt.texi: Add mention of GMAC.
* src/gcrypt.h.in (gcry_mac_algos): Add GCM algorithms.
* tests/basic.c (check_one_mac): Add support for MAC IVs.
(check_mac): Add support for MAC IVs and add GMAC test vectors.
* tests/bench-slope.c (mac_bench): Iterate algorithm numbers to 499.
* tests/benchmark.c (mac_bench): Iterate algorithm numbers to 499.
--

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

1 files changed, 27 insertions, 7 deletions

diff --git a/doc/gcrypt.texi b/doc/gcrypt.texi
index 1f6ceec7..4870a1c1 100644
--- a/doc/gcrypt.texi
+++ b/doc/gcrypt.texi
@@ -3529,6 +3529,26 @@ block cipher algorithm.
 This is CMAC message authentication algorithm based on the GOST 28147-89
 block cipher algorithm.
 
+@item GCRY_MAC_GMAC_AES
+This is GMAC (GCM mode based MAC) message authentication algorithm based on
+the AES block cipher algorithm.
+
+@item GCRY_MAC_GMAC_CAMELLIA
+This is GMAC message authentication algorithm based on the Camellia
+block cipher algorithm.
+
+@item GCRY_MAC_GMAC_TWOFISH
+This is GMAC message authentication algorithm based on the Twofish
+block cipher algorithm.
+
+@item GCRY_MAC_GMAC_SERPENT
+This is GMAC message authentication algorithm based on the Serpent
+block cipher algorithm.
+
+@item GCRY_MAC_GMAC_SEED
+This is GMAC message authentication algorithm based on the SEED
+block cipher algorithm.
+
 @end table
 @c end table of MAC algorithms
 
@@ -3574,13 +3594,13 @@ underlying block cipher.
 @end deftypefun
 
 
-@c Some MAC algorithms need initialization vector to be set, which can be
-@c performed with function:
-@c @c
-@c @deftypefun gcry_error_t gcry_mac_setiv (gcry_mac_hd_t @var{h}, const void *@var{iv}, size_t @var{ivlen})
-@c @c
-@c Set the IV to the value of @var{iv} of length @var{ivlen} bytes.
-@c @end deftypefun
+GMAC algorithms need initialization vector to be set, which can be
+performed with function:
+
+@deftypefun gcry_error_t gcry_mac_setiv (gcry_mac_hd_t @var{h}, const void *@var{iv}, size_t @var{ivlen})
+
+Set the IV to the value of @var{iv} of length @var{ivlen} bytes.
+@end deftypefun
 
 
 After you are done with the MAC calculation, you should release the resources