From 90cce18b9eced4f412ceeec5bcae18c4493322df Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Tue, 19 Nov 2013 23:26:26 +0200 Subject: Initial implementation of GCM * cipher/Makefile.am: Add 'cipher-gcm.c'. * cipher/cipher-ccm.c (_gcry_ciphert_ccm_set_lengths) (_gcry_cipher_ccm_authenticate, _gcry_cipher_ccm_tag) (_gcry_cipher_ccm_encrypt, _gcry_cipher_ccm_decrypt): Change 'c->u_mode.ccm.tag' to 'c->marks.tag'. * cipher/cipher-gcm.c: New. * cipher/cipher-internal.h (GCM_USE_TABLES): New. (gcry_cipher_handle): Add 'marks.tag', 'u_tag', 'length' and 'gcm_table'; Remove 'u_mode.ccm.tag'. (_gcry_cipher_gcm_encrypt, _gcry_cipher_gcm_decrypt) (_gcry_cipher_gcm_setiv, _gcry_cipher_gcm_authenticate) (_gcry_cipher_gcm_get_tag, _gcry_cipher_gcm_check_tag): New. * cipher/cipher.c (_gcry_cipher_open_internal, cipher_setkey) (cipher_encrypt, cipher_decrypt, _gcry_cipher_authenticate) (_gcry_cipher_gettag, _gcry_cipher_checktag): Add GCM mode handling. * src/gcrypt.h.in (gcry_cipher_modes): Add GCRY_CIPHER_MODE_GCM. (GCRY_GCM_BLOCK_LEN): New. * tests/basic.c (check_gcm_cipher): New. (check_ciphers): Add GCM check. (check_cipher_modes): Call 'check_gcm_cipher'. * tests/bench-slope.c (bench_gcm_encrypt_do_bench) (bench_gcm_decrypt_do_bench, bench_gcm_authenticate_do_bench) (gcm_encrypt_ops, gcm_decrypt_ops, gcm_authenticate_ops): New. (cipher_modes): Add GCM enc/dec/auth. (cipher_bench_one): Limit GCM to block ciphers with 16 byte block-size. * tests/benchmark.c (cipher_bench): Add GCM. -- Currently it is still quite slow. Still no support for generate_iv(). Is it really necessary? TODO: Merge/reuse cipher-internal state used by CCM. Changelog entry will be present in final patch submission. Changes since v1: - 6x-7x speedup. - added bench-slope support Signed-off-by: Dmitry Eremin-Solenikov [jk: mangle new file throught 'indent -nut'] [jk: few fixes] [jk: changelog] --- cipher/Makefile.am | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'cipher/Makefile.am') diff --git a/cipher/Makefile.am b/cipher/Makefile.am index 2fd98227..e29b28d0 100644 --- a/cipher/Makefile.am +++ b/cipher/Makefile.am @@ -40,7 +40,7 @@ libcipher_la_LIBADD = $(GCRYPT_MODULES) libcipher_la_SOURCES = \ cipher.c cipher-internal.h \ cipher-cbc.c cipher-cfb.c cipher-ofb.c cipher-ctr.c cipher-aeswrap.c \ -cipher-ccm.c cipher-cmac.c \ +cipher-ccm.c cipher-cmac.c cipher-gcm.c \ cipher-selftest.c cipher-selftest.h \ pubkey.c pubkey-internal.h pubkey-util.c \ md.c \ -- cgit v1.2.1