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authorRik Snel <rsnel@cube.dyndns.org>2007-09-19 20:23:13 +0800
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:55:45 -0700
commitf19f5111c94053ba4931892f5c01c806de33942e (patch)
treeb40dfae8fa170ebdc92fdcfeb3000c84d6203645 /crypto/tcrypt.c
parent5aaff0c8f7dd3515c9f1ca57f86463f30779acc7 (diff)
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[CRYPTO] xts: XTS blockcipher mode implementation without partial blocks
XTS currently considered to be the successor of the LRW mode by the IEEE1619 workgroup. LRW was discarded, because it was not secure if the encyption key itself is encrypted with LRW. XTS does not have this problem. The implementation is pretty straightforward, a new function was added to gf128mul to handle GF(128) elements in ble format. Four testvectors from the specification http://grouper.ieee.org/groups/1619/email/pdf00086.pdf were added, and they verify on my system. Signed-off-by: Rik Snel <rsnel@cube.dyndns.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/tcrypt.c')
-rw-r--r--crypto/tcrypt.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index de6435ea9bf8..18d489c8b935 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -955,6 +955,10 @@ static void do_test(void)
AES_LRW_ENC_TEST_VECTORS);
test_cipher("lrw(aes)", DECRYPT, aes_lrw_dec_tv_template,
AES_LRW_DEC_TEST_VECTORS);
+ test_cipher("xts(aes)", ENCRYPT, aes_xts_enc_tv_template,
+ AES_XTS_ENC_TEST_VECTORS);
+ test_cipher("xts(aes)", DECRYPT, aes_xts_dec_tv_template,
+ AES_XTS_DEC_TEST_VECTORS);
//CAST5
test_cipher("ecb(cast5)", ENCRYPT, cast5_enc_tv_template,
@@ -1138,6 +1142,10 @@ static void do_test(void)
AES_LRW_ENC_TEST_VECTORS);
test_cipher("lrw(aes)", DECRYPT, aes_lrw_dec_tv_template,
AES_LRW_DEC_TEST_VECTORS);
+ test_cipher("xts(aes)", ENCRYPT, aes_xts_enc_tv_template,
+ AES_XTS_ENC_TEST_VECTORS);
+ test_cipher("xts(aes)", DECRYPT, aes_xts_dec_tv_template,
+ AES_XTS_DEC_TEST_VECTORS);
break;
case 11:
@@ -1313,6 +1321,10 @@ static void do_test(void)
aes_lrw_speed_template);
test_cipher_speed("lrw(aes)", DECRYPT, sec, NULL, 0,
aes_lrw_speed_template);
+ test_cipher_speed("xts(aes)", ENCRYPT, sec, NULL, 0,
+ aes_xts_speed_template);
+ test_cipher_speed("xts(aes)", DECRYPT, sec, NULL, 0,
+ aes_xts_speed_template);
break;
case 201: