[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>
This commit is contained in:
Rik Snel
David S. Miller
Родитель
5aaff0c8f7
Коммит
f19f5111c9
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@ -184,6 +184,17 @@ config CRYPTO_LRW
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The first 128, 192 or 256 bits in the key are used for AES and the
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rest is used to tie each cipher block to its logical position.
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config CRYPTO_XTS
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tristate "XTS support (EXPERIMENTAL)"
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depends on EXPERIMENTAL
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select CRYPTO_BLKCIPHER
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select CRYPTO_MANAGER
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select CRYPTO_GF128MUL
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help
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XTS: IEEE1619/D16 narrow block cipher use with aes-xts-plain,
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key size 256, 384 or 512 bits. This implementation currently
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can't handle a sectorsize which is not a multiple of 16 bytes.
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config CRYPTO_CRYPTD
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tristate "Software async crypto daemon"
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select CRYPTO_ABLKCIPHER
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@ -31,6 +31,7 @@ obj-$(CONFIG_CRYPTO_ECB) += ecb.o
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obj-$(CONFIG_CRYPTO_CBC) += cbc.o
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obj-$(CONFIG_CRYPTO_PCBC) += pcbc.o
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obj-$(CONFIG_CRYPTO_LRW) += lrw.o
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obj-$(CONFIG_CRYPTO_XTS) += xts.o
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obj-$(CONFIG_CRYPTO_CRYPTD) += cryptd.o
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obj-$(CONFIG_CRYPTO_DES) += des.o
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obj-$(CONFIG_CRYPTO_FCRYPT) += fcrypt.o
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@ -142,6 +142,17 @@ static void gf128mul_x_bbe(be128 *r, const be128 *x)
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r->b = cpu_to_be64((b << 1) ^ _tt);
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}
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void gf128mul_x_ble(be128 *r, const be128 *x)
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{
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u64 a = le64_to_cpu(x->a);
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u64 b = le64_to_cpu(x->b);
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u64 _tt = gf128mul_table_bbe[b >> 63];
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r->a = cpu_to_le64((a << 1) ^ _tt);
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r->b = cpu_to_le64((b << 1) | (a >> 63));
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}
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EXPORT_SYMBOL(gf128mul_x_ble);
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static void gf128mul_x8_lle(be128 *x)
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{
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u64 a = be64_to_cpu(x->a);
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@ -955,6 +955,10 @@ static void do_test(void)
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AES_LRW_ENC_TEST_VECTORS);
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test_cipher("lrw(aes)", DECRYPT, aes_lrw_dec_tv_template,
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AES_LRW_DEC_TEST_VECTORS);
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test_cipher("xts(aes)", ENCRYPT, aes_xts_enc_tv_template,
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AES_XTS_ENC_TEST_VECTORS);
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test_cipher("xts(aes)", DECRYPT, aes_xts_dec_tv_template,
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AES_XTS_DEC_TEST_VECTORS);
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//CAST5
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test_cipher("ecb(cast5)", ENCRYPT, cast5_enc_tv_template,
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@ -1138,6 +1142,10 @@ static void do_test(void)
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AES_LRW_ENC_TEST_VECTORS);
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test_cipher("lrw(aes)", DECRYPT, aes_lrw_dec_tv_template,
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AES_LRW_DEC_TEST_VECTORS);
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test_cipher("xts(aes)", ENCRYPT, aes_xts_enc_tv_template,
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AES_XTS_ENC_TEST_VECTORS);
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test_cipher("xts(aes)", DECRYPT, aes_xts_dec_tv_template,
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AES_XTS_DEC_TEST_VECTORS);
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break;
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case 11:
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@ -1313,6 +1321,10 @@ static void do_test(void)
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aes_lrw_speed_template);
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test_cipher_speed("lrw(aes)", DECRYPT, sec, NULL, 0,
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aes_lrw_speed_template);
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test_cipher_speed("xts(aes)", ENCRYPT, sec, NULL, 0,
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aes_xts_speed_template);
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test_cipher_speed("xts(aes)", DECRYPT, sec, NULL, 0,
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aes_xts_speed_template);
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break;
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case 201:
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417
crypto/tcrypt.h
417
crypto/tcrypt.h
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@ -2144,6 +2144,8 @@ static struct cipher_testvec cast6_dec_tv_template[] = {
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#define AES_CBC_DEC_TEST_VECTORS 2
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#define AES_LRW_ENC_TEST_VECTORS 8
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#define AES_LRW_DEC_TEST_VECTORS 8
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#define AES_XTS_ENC_TEST_VECTORS 4
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#define AES_XTS_DEC_TEST_VECTORS 4
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static struct cipher_testvec aes_enc_tv_template[] = {
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{ /* From FIPS-197 */
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@ -2784,6 +2786,400 @@ static struct cipher_testvec aes_lrw_dec_tv_template[] = {
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}
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};
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static struct cipher_testvec aes_xts_enc_tv_template[] = {
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/* http://grouper.ieee.org/groups/1619/email/pdf00086.pdf */
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{ /* XTS-AES 1 */
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.key = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
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.klen = 32,
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.iv = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
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.input = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
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.ilen = 32,
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.result = { 0x91, 0x7c, 0xf6, 0x9e, 0xbd, 0x68, 0xb2, 0xec,
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0x9b, 0x9f, 0xe9, 0xa3, 0xea, 0xdd, 0xa6, 0x92,
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0xcd, 0x43, 0xd2, 0xf5, 0x95, 0x98, 0xed, 0x85,
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0x8c, 0x02, 0xc2, 0x65, 0x2f, 0xbf, 0x92, 0x2e },
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.rlen = 32,
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}, { /* XTS-AES 2 */
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.key = { 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
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0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
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0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22 },
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.klen = 32,
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.iv = { 0x33, 0x33, 0x33, 0x33, 0x33, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
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.input = { 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
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0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
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0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
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0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44 },
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.ilen = 32,
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.result = { 0xc4, 0x54, 0x18, 0x5e, 0x6a, 0x16, 0x93, 0x6e,
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0x39, 0x33, 0x40, 0x38, 0xac, 0xef, 0x83, 0x8b,
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0xfb, 0x18, 0x6f, 0xff, 0x74, 0x80, 0xad, 0xc4,
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0x28, 0x93, 0x82, 0xec, 0xd6, 0xd3, 0x94, 0xf0 },
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.rlen = 32,
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}, { /* XTS-AES 3 */
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.key = { 0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8,
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0xf7, 0xf6, 0xf5, 0xf4, 0xf3, 0xf2, 0xf1, 0xf0,
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0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
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0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22 },
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.klen = 32,
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.iv = { 0x33, 0x33, 0x33, 0x33, 0x33, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
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.input = { 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
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0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
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0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
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0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44 },
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.ilen = 32,
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.result = { 0xaf, 0x85, 0x33, 0x6b, 0x59, 0x7a, 0xfc, 0x1a,
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0x90, 0x0b, 0x2e, 0xb2, 0x1e, 0xc9, 0x49, 0xd2,
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0x92, 0xdf, 0x4c, 0x04, 0x7e, 0x0b, 0x21, 0x53,
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0x21, 0x86, 0xa5, 0x97, 0x1a, 0x22, 0x7a, 0x89 },
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.rlen = 32,
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}, { /* XTS-AES 4 */
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.key = { 0x27, 0x18, 0x28, 0x18, 0x28, 0x45, 0x90, 0x45,
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0x23, 0x53, 0x60, 0x28, 0x74, 0x71, 0x35, 0x26,
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0x31, 0x41, 0x59, 0x26, 0x53, 0x58, 0x97, 0x93,
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0x23, 0x84, 0x62, 0x64, 0x33, 0x83, 0x27, 0x95 },
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.klen = 32,
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.iv = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
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.input = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
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0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
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0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
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0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
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0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
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0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
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0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
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0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
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0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
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0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
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0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
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0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
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0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
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0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
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0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
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0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
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0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
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0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
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0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
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0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
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0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
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0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
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0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
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0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
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0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
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0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
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0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
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0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
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0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
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0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
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0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
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0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
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0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
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0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
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0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
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0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
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0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
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0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
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0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
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0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
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0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
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0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
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0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
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0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
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0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
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0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
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0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
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0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
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0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
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0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
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0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
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0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
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0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
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0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
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0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
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0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
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0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
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0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
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0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
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0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
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0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff },
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.ilen = 512,
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.result = { 0x27, 0xa7, 0x47, 0x9b, 0xef, 0xa1, 0xd4, 0x76,
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0x48, 0x9f, 0x30, 0x8c, 0xd4, 0xcf, 0xa6, 0xe2,
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0xa9, 0x6e, 0x4b, 0xbe, 0x32, 0x08, 0xff, 0x25,
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0x28, 0x7d, 0xd3, 0x81, 0x96, 0x16, 0xe8, 0x9c,
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0xc7, 0x8c, 0xf7, 0xf5, 0xe5, 0x43, 0x44, 0x5f,
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0x83, 0x33, 0xd8, 0xfa, 0x7f, 0x56, 0x00, 0x00,
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0x05, 0x27, 0x9f, 0xa5, 0xd8, 0xb5, 0xe4, 0xad,
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0x40, 0xe7, 0x36, 0xdd, 0xb4, 0xd3, 0x54, 0x12,
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0x32, 0x80, 0x63, 0xfd, 0x2a, 0xab, 0x53, 0xe5,
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0xea, 0x1e, 0x0a, 0x9f, 0x33, 0x25, 0x00, 0xa5,
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0xdf, 0x94, 0x87, 0xd0, 0x7a, 0x5c, 0x92, 0xcc,
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0x51, 0x2c, 0x88, 0x66, 0xc7, 0xe8, 0x60, 0xce,
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0x93, 0xfd, 0xf1, 0x66, 0xa2, 0x49, 0x12, 0xb4,
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0x22, 0x97, 0x61, 0x46, 0xae, 0x20, 0xce, 0x84,
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0x6b, 0xb7, 0xdc, 0x9b, 0xa9, 0x4a, 0x76, 0x7a,
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0xae, 0xf2, 0x0c, 0x0d, 0x61, 0xad, 0x02, 0x65,
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0x5e, 0xa9, 0x2d, 0xc4, 0xc4, 0xe4, 0x1a, 0x89,
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0x52, 0xc6, 0x51, 0xd3, 0x31, 0x74, 0xbe, 0x51,
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0xa1, 0x0c, 0x42, 0x11, 0x10, 0xe6, 0xd8, 0x15,
|
||||
0x88, 0xed, 0xe8, 0x21, 0x03, 0xa2, 0x52, 0xd8,
|
||||
0xa7, 0x50, 0xe8, 0x76, 0x8d, 0xef, 0xff, 0xed,
|
||||
0x91, 0x22, 0x81, 0x0a, 0xae, 0xb9, 0x9f, 0x91,
|
||||
0x72, 0xaf, 0x82, 0xb6, 0x04, 0xdc, 0x4b, 0x8e,
|
||||
0x51, 0xbc, 0xb0, 0x82, 0x35, 0xa6, 0xf4, 0x34,
|
||||
0x13, 0x32, 0xe4, 0xca, 0x60, 0x48, 0x2a, 0x4b,
|
||||
0xa1, 0xa0, 0x3b, 0x3e, 0x65, 0x00, 0x8f, 0xc5,
|
||||
0xda, 0x76, 0xb7, 0x0b, 0xf1, 0x69, 0x0d, 0xb4,
|
||||
0xea, 0xe2, 0x9c, 0x5f, 0x1b, 0xad, 0xd0, 0x3c,
|
||||
0x5c, 0xcf, 0x2a, 0x55, 0xd7, 0x05, 0xdd, 0xcd,
|
||||
0x86, 0xd4, 0x49, 0x51, 0x1c, 0xeb, 0x7e, 0xc3,
|
||||
0x0b, 0xf1, 0x2b, 0x1f, 0xa3, 0x5b, 0x91, 0x3f,
|
||||
0x9f, 0x74, 0x7a, 0x8a, 0xfd, 0x1b, 0x13, 0x0e,
|
||||
0x94, 0xbf, 0xf9, 0x4e, 0xff, 0xd0, 0x1a, 0x91,
|
||||
0x73, 0x5c, 0xa1, 0x72, 0x6a, 0xcd, 0x0b, 0x19,
|
||||
0x7c, 0x4e, 0x5b, 0x03, 0x39, 0x36, 0x97, 0xe1,
|
||||
0x26, 0x82, 0x6f, 0xb6, 0xbb, 0xde, 0x8e, 0xcc,
|
||||
0x1e, 0x08, 0x29, 0x85, 0x16, 0xe2, 0xc9, 0xed,
|
||||
0x03, 0xff, 0x3c, 0x1b, 0x78, 0x60, 0xf6, 0xde,
|
||||
0x76, 0xd4, 0xce, 0xcd, 0x94, 0xc8, 0x11, 0x98,
|
||||
0x55, 0xef, 0x52, 0x97, 0xca, 0x67, 0xe9, 0xf3,
|
||||
0xe7, 0xff, 0x72, 0xb1, 0xe9, 0x97, 0x85, 0xca,
|
||||
0x0a, 0x7e, 0x77, 0x20, 0xc5, 0xb3, 0x6d, 0xc6,
|
||||
0xd7, 0x2c, 0xac, 0x95, 0x74, 0xc8, 0xcb, 0xbc,
|
||||
0x2f, 0x80, 0x1e, 0x23, 0xe5, 0x6f, 0xd3, 0x44,
|
||||
0xb0, 0x7f, 0x22, 0x15, 0x4b, 0xeb, 0xa0, 0xf0,
|
||||
0x8c, 0xe8, 0x89, 0x1e, 0x64, 0x3e, 0xd9, 0x95,
|
||||
0xc9, 0x4d, 0x9a, 0x69, 0xc9, 0xf1, 0xb5, 0xf4,
|
||||
0x99, 0x02, 0x7a, 0x78, 0x57, 0x2a, 0xee, 0xbd,
|
||||
0x74, 0xd2, 0x0c, 0xc3, 0x98, 0x81, 0xc2, 0x13,
|
||||
0xee, 0x77, 0x0b, 0x10, 0x10, 0xe4, 0xbe, 0xa7,
|
||||
0x18, 0x84, 0x69, 0x77, 0xae, 0x11, 0x9f, 0x7a,
|
||||
0x02, 0x3a, 0xb5, 0x8c, 0xca, 0x0a, 0xd7, 0x52,
|
||||
0xaf, 0xe6, 0x56, 0xbb, 0x3c, 0x17, 0x25, 0x6a,
|
||||
0x9f, 0x6e, 0x9b, 0xf1, 0x9f, 0xdd, 0x5a, 0x38,
|
||||
0xfc, 0x82, 0xbb, 0xe8, 0x72, 0xc5, 0x53, 0x9e,
|
||||
0xdb, 0x60, 0x9e, 0xf4, 0xf7, 0x9c, 0x20, 0x3e,
|
||||
0xbb, 0x14, 0x0f, 0x2e, 0x58, 0x3c, 0xb2, 0xad,
|
||||
0x15, 0xb4, 0xaa, 0x5b, 0x65, 0x50, 0x16, 0xa8,
|
||||
0x44, 0x92, 0x77, 0xdb, 0xd4, 0x77, 0xef, 0x2c,
|
||||
0x8d, 0x6c, 0x01, 0x7d, 0xb7, 0x38, 0xb1, 0x8d,
|
||||
0xeb, 0x4a, 0x42, 0x7d, 0x19, 0x23, 0xce, 0x3f,
|
||||
0xf2, 0x62, 0x73, 0x57, 0x79, 0xa4, 0x18, 0xf2,
|
||||
0x0a, 0x28, 0x2d, 0xf9, 0x20, 0x14, 0x7b, 0xea,
|
||||
0xbe, 0x42, 0x1e, 0xe5, 0x31, 0x9d, 0x05, 0x68 },
|
||||
.rlen = 512,
|
||||
}
|
||||
};
|
||||
|
||||
static struct cipher_testvec aes_xts_dec_tv_template[] = {
|
||||
/* http://grouper.ieee.org/groups/1619/email/pdf00086.pdf */
|
||||
{ /* XTS-AES 1 */
|
||||
.key = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
|
||||
.klen = 32,
|
||||
.iv = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
|
||||
.input = { 0x91, 0x7c, 0xf6, 0x9e, 0xbd, 0x68, 0xb2, 0xec,
|
||||
0x9b, 0x9f, 0xe9, 0xa3, 0xea, 0xdd, 0xa6, 0x92,
|
||||
0xcd, 0x43, 0xd2, 0xf5, 0x95, 0x98, 0xed, 0x85,
|
||||
0x8c, 0x02, 0xc2, 0x65, 0x2f, 0xbf, 0x92, 0x2e },
|
||||
.ilen = 32,
|
||||
.result = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
|
||||
.rlen = 32,
|
||||
}, { /* XTS-AES 2 */
|
||||
.key = { 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
|
||||
0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
|
||||
0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
|
||||
0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22 },
|
||||
.klen = 32,
|
||||
.iv = { 0x33, 0x33, 0x33, 0x33, 0x33, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
|
||||
.input = { 0xc4, 0x54, 0x18, 0x5e, 0x6a, 0x16, 0x93, 0x6e,
|
||||
0x39, 0x33, 0x40, 0x38, 0xac, 0xef, 0x83, 0x8b,
|
||||
0xfb, 0x18, 0x6f, 0xff, 0x74, 0x80, 0xad, 0xc4,
|
||||
0x28, 0x93, 0x82, 0xec, 0xd6, 0xd3, 0x94, 0xf0 },
|
||||
.ilen = 32,
|
||||
.result = { 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
|
||||
0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
|
||||
0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
|
||||
0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44 },
|
||||
.rlen = 32,
|
||||
}, { /* XTS-AES 3 */
|
||||
.key = { 0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8,
|
||||
0xf7, 0xf6, 0xf5, 0xf4, 0xf3, 0xf2, 0xf1, 0xf0,
|
||||
0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
|
||||
0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22 },
|
||||
.klen = 32,
|
||||
.iv = { 0x33, 0x33, 0x33, 0x33, 0x33, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
|
||||
.input = { 0xaf, 0x85, 0x33, 0x6b, 0x59, 0x7a, 0xfc, 0x1a,
|
||||
0x90, 0x0b, 0x2e, 0xb2, 0x1e, 0xc9, 0x49, 0xd2,
|
||||
0x92, 0xdf, 0x4c, 0x04, 0x7e, 0x0b, 0x21, 0x53,
|
||||
0x21, 0x86, 0xa5, 0x97, 0x1a, 0x22, 0x7a, 0x89 },
|
||||
.ilen = 32,
|
||||
.result = { 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
|
||||
0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
|
||||
0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44,
|
||||
0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x44 },
|
||||
.rlen = 32,
|
||||
}, { /* XTS-AES 4 */
|
||||
.key = { 0x27, 0x18, 0x28, 0x18, 0x28, 0x45, 0x90, 0x45,
|
||||
0x23, 0x53, 0x60, 0x28, 0x74, 0x71, 0x35, 0x26,
|
||||
0x31, 0x41, 0x59, 0x26, 0x53, 0x58, 0x97, 0x93,
|
||||
0x23, 0x84, 0x62, 0x64, 0x33, 0x83, 0x27, 0x95 },
|
||||
.klen = 32,
|
||||
.iv = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
||||
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
|
||||
.input = { 0x27, 0xa7, 0x47, 0x9b, 0xef, 0xa1, 0xd4, 0x76,
|
||||
0x48, 0x9f, 0x30, 0x8c, 0xd4, 0xcf, 0xa6, 0xe2,
|
||||
0xa9, 0x6e, 0x4b, 0xbe, 0x32, 0x08, 0xff, 0x25,
|
||||
0x28, 0x7d, 0xd3, 0x81, 0x96, 0x16, 0xe8, 0x9c,
|
||||
0xc7, 0x8c, 0xf7, 0xf5, 0xe5, 0x43, 0x44, 0x5f,
|
||||
0x83, 0x33, 0xd8, 0xfa, 0x7f, 0x56, 0x00, 0x00,
|
||||
0x05, 0x27, 0x9f, 0xa5, 0xd8, 0xb5, 0xe4, 0xad,
|
||||
0x40, 0xe7, 0x36, 0xdd, 0xb4, 0xd3, 0x54, 0x12,
|
||||
0x32, 0x80, 0x63, 0xfd, 0x2a, 0xab, 0x53, 0xe5,
|
||||
0xea, 0x1e, 0x0a, 0x9f, 0x33, 0x25, 0x00, 0xa5,
|
||||
0xdf, 0x94, 0x87, 0xd0, 0x7a, 0x5c, 0x92, 0xcc,
|
||||
0x51, 0x2c, 0x88, 0x66, 0xc7, 0xe8, 0x60, 0xce,
|
||||
0x93, 0xfd, 0xf1, 0x66, 0xa2, 0x49, 0x12, 0xb4,
|
||||
0x22, 0x97, 0x61, 0x46, 0xae, 0x20, 0xce, 0x84,
|
||||
0x6b, 0xb7, 0xdc, 0x9b, 0xa9, 0x4a, 0x76, 0x7a,
|
||||
0xae, 0xf2, 0x0c, 0x0d, 0x61, 0xad, 0x02, 0x65,
|
||||
0x5e, 0xa9, 0x2d, 0xc4, 0xc4, 0xe4, 0x1a, 0x89,
|
||||
0x52, 0xc6, 0x51, 0xd3, 0x31, 0x74, 0xbe, 0x51,
|
||||
0xa1, 0x0c, 0x42, 0x11, 0x10, 0xe6, 0xd8, 0x15,
|
||||
0x88, 0xed, 0xe8, 0x21, 0x03, 0xa2, 0x52, 0xd8,
|
||||
0xa7, 0x50, 0xe8, 0x76, 0x8d, 0xef, 0xff, 0xed,
|
||||
0x91, 0x22, 0x81, 0x0a, 0xae, 0xb9, 0x9f, 0x91,
|
||||
0x72, 0xaf, 0x82, 0xb6, 0x04, 0xdc, 0x4b, 0x8e,
|
||||
0x51, 0xbc, 0xb0, 0x82, 0x35, 0xa6, 0xf4, 0x34,
|
||||
0x13, 0x32, 0xe4, 0xca, 0x60, 0x48, 0x2a, 0x4b,
|
||||
0xa1, 0xa0, 0x3b, 0x3e, 0x65, 0x00, 0x8f, 0xc5,
|
||||
0xda, 0x76, 0xb7, 0x0b, 0xf1, 0x69, 0x0d, 0xb4,
|
||||
0xea, 0xe2, 0x9c, 0x5f, 0x1b, 0xad, 0xd0, 0x3c,
|
||||
0x5c, 0xcf, 0x2a, 0x55, 0xd7, 0x05, 0xdd, 0xcd,
|
||||
0x86, 0xd4, 0x49, 0x51, 0x1c, 0xeb, 0x7e, 0xc3,
|
||||
0x0b, 0xf1, 0x2b, 0x1f, 0xa3, 0x5b, 0x91, 0x3f,
|
||||
0x9f, 0x74, 0x7a, 0x8a, 0xfd, 0x1b, 0x13, 0x0e,
|
||||
0x94, 0xbf, 0xf9, 0x4e, 0xff, 0xd0, 0x1a, 0x91,
|
||||
0x73, 0x5c, 0xa1, 0x72, 0x6a, 0xcd, 0x0b, 0x19,
|
||||
0x7c, 0x4e, 0x5b, 0x03, 0x39, 0x36, 0x97, 0xe1,
|
||||
0x26, 0x82, 0x6f, 0xb6, 0xbb, 0xde, 0x8e, 0xcc,
|
||||
0x1e, 0x08, 0x29, 0x85, 0x16, 0xe2, 0xc9, 0xed,
|
||||
0x03, 0xff, 0x3c, 0x1b, 0x78, 0x60, 0xf6, 0xde,
|
||||
0x76, 0xd4, 0xce, 0xcd, 0x94, 0xc8, 0x11, 0x98,
|
||||
0x55, 0xef, 0x52, 0x97, 0xca, 0x67, 0xe9, 0xf3,
|
||||
0xe7, 0xff, 0x72, 0xb1, 0xe9, 0x97, 0x85, 0xca,
|
||||
0x0a, 0x7e, 0x77, 0x20, 0xc5, 0xb3, 0x6d, 0xc6,
|
||||
0xd7, 0x2c, 0xac, 0x95, 0x74, 0xc8, 0xcb, 0xbc,
|
||||
0x2f, 0x80, 0x1e, 0x23, 0xe5, 0x6f, 0xd3, 0x44,
|
||||
0xb0, 0x7f, 0x22, 0x15, 0x4b, 0xeb, 0xa0, 0xf0,
|
||||
0x8c, 0xe8, 0x89, 0x1e, 0x64, 0x3e, 0xd9, 0x95,
|
||||
0xc9, 0x4d, 0x9a, 0x69, 0xc9, 0xf1, 0xb5, 0xf4,
|
||||
0x99, 0x02, 0x7a, 0x78, 0x57, 0x2a, 0xee, 0xbd,
|
||||
0x74, 0xd2, 0x0c, 0xc3, 0x98, 0x81, 0xc2, 0x13,
|
||||
0xee, 0x77, 0x0b, 0x10, 0x10, 0xe4, 0xbe, 0xa7,
|
||||
0x18, 0x84, 0x69, 0x77, 0xae, 0x11, 0x9f, 0x7a,
|
||||
0x02, 0x3a, 0xb5, 0x8c, 0xca, 0x0a, 0xd7, 0x52,
|
||||
0xaf, 0xe6, 0x56, 0xbb, 0x3c, 0x17, 0x25, 0x6a,
|
||||
0x9f, 0x6e, 0x9b, 0xf1, 0x9f, 0xdd, 0x5a, 0x38,
|
||||
0xfc, 0x82, 0xbb, 0xe8, 0x72, 0xc5, 0x53, 0x9e,
|
||||
0xdb, 0x60, 0x9e, 0xf4, 0xf7, 0x9c, 0x20, 0x3e,
|
||||
0xbb, 0x14, 0x0f, 0x2e, 0x58, 0x3c, 0xb2, 0xad,
|
||||
0x15, 0xb4, 0xaa, 0x5b, 0x65, 0x50, 0x16, 0xa8,
|
||||
0x44, 0x92, 0x77, 0xdb, 0xd4, 0x77, 0xef, 0x2c,
|
||||
0x8d, 0x6c, 0x01, 0x7d, 0xb7, 0x38, 0xb1, 0x8d,
|
||||
0xeb, 0x4a, 0x42, 0x7d, 0x19, 0x23, 0xce, 0x3f,
|
||||
0xf2, 0x62, 0x73, 0x57, 0x79, 0xa4, 0x18, 0xf2,
|
||||
0x0a, 0x28, 0x2d, 0xf9, 0x20, 0x14, 0x7b, 0xea,
|
||||
0xbe, 0x42, 0x1e, 0xe5, 0x31, 0x9d, 0x05, 0x68 },
|
||||
.ilen = 512,
|
||||
.result = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
|
||||
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
|
||||
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
|
||||
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
|
||||
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
|
||||
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
|
||||
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
|
||||
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
|
||||
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
|
||||
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
|
||||
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
|
||||
0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
|
||||
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
|
||||
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
|
||||
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
|
||||
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
|
||||
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
|
||||
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
|
||||
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
|
||||
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
|
||||
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
|
||||
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
|
||||
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
|
||||
0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
|
||||
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
|
||||
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
|
||||
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
|
||||
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
|
||||
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
|
||||
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
|
||||
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
|
||||
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
|
||||
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
|
||||
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
|
||||
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
|
||||
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
|
||||
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
|
||||
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
|
||||
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
|
||||
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
|
||||
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
|
||||
0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
|
||||
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
|
||||
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
|
||||
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
|
||||
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
|
||||
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
|
||||
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
|
||||
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
|
||||
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
|
||||
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
|
||||
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
|
||||
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
|
||||
0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
|
||||
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
|
||||
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
|
||||
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
|
||||
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
|
||||
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
|
||||
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
|
||||
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
|
||||
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff },
|
||||
.rlen = 512,
|
||||
}
|
||||
};
|
||||
|
||||
/* Cast5 test vectors from RFC 2144 */
|
||||
#define CAST5_ENC_TEST_VECTORS 3
|
||||
#define CAST5_DEC_TEST_VECTORS 3
|
||||
|
|
@ -4283,6 +4679,27 @@ static struct cipher_speed aes_lrw_speed_template[] = {
|
|||
{ .klen = 0, .blen = 0, }
|
||||
};
|
||||
|
||||
static struct cipher_speed aes_xts_speed_template[] = {
|
||||
{ .klen = 32, .blen = 16, },
|
||||
{ .klen = 32, .blen = 64, },
|
||||
{ .klen = 32, .blen = 256, },
|
||||
{ .klen = 32, .blen = 1024, },
|
||||
{ .klen = 32, .blen = 8192, },
|
||||
{ .klen = 48, .blen = 16, },
|
||||
{ .klen = 48, .blen = 64, },
|
||||
{ .klen = 48, .blen = 256, },
|
||||
{ .klen = 48, .blen = 1024, },
|
||||
{ .klen = 48, .blen = 8192, },
|
||||
{ .klen = 64, .blen = 16, },
|
||||
{ .klen = 64, .blen = 64, },
|
||||
{ .klen = 64, .blen = 256, },
|
||||
{ .klen = 64, .blen = 1024, },
|
||||
{ .klen = 64, .blen = 8192, },
|
||||
|
||||
/* End marker */
|
||||
{ .klen = 0, .blen = 0, }
|
||||
};
|
||||
|
||||
static struct cipher_speed des3_ede_speed_template[] = {
|
||||
{ .klen = 24, .blen = 16, },
|
||||
{ .klen = 24, .blen = 64, },
|
||||
|
|
|
|||
|
|
@ -0,0 +1,292 @@
|
|||
/* XTS: as defined in IEEE1619/D16
|
||||
* http://grouper.ieee.org/groups/1619/email/pdf00086.pdf
|
||||
* (sector sizes which are not a multiple of 16 bytes are,
|
||||
* however currently unsupported)
|
||||
*
|
||||
* Copyright (c) 2007 Rik Snel <rsnel@cube.dyndns.org>
|
||||
*
|
||||
* Based om ecb.c
|
||||
* Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the Free
|
||||
* Software Foundation; either version 2 of the License, or (at your option)
|
||||
* any later version.
|
||||
*/
|
||||
#include <crypto/algapi.h>
|
||||
#include <linux/err.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/scatterlist.h>
|
||||
#include <linux/slab.h>
|
||||
|
||||
#include <crypto/b128ops.h>
|
||||
#include <crypto/gf128mul.h>
|
||||
|
||||
struct priv {
|
||||
struct crypto_cipher *child;
|
||||
struct crypto_cipher *tweak;
|
||||
};
|
||||
|
||||
static int setkey(struct crypto_tfm *parent, const u8 *key,
|
||||
unsigned int keylen)
|
||||
{
|
||||
struct priv *ctx = crypto_tfm_ctx(parent);
|
||||
struct crypto_cipher *child = ctx->tweak;
|
||||
u32 *flags = &parent->crt_flags;
|
||||
int err;
|
||||
|
||||
/* key consists of keys of equal size concatenated, therefore
|
||||
* the length must be even */
|
||||
if (keylen % 2) {
|
||||
/* tell the user why there was an error */
|
||||
*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* we need two cipher instances: one to compute the inital 'tweak'
|
||||
* by encrypting the IV (usually the 'plain' iv) and the other
|
||||
* one to encrypt and decrypt the data */
|
||||
|
||||
/* tweak cipher, uses Key2 i.e. the second half of *key */
|
||||
crypto_cipher_clear_flags(child, CRYPTO_TFM_REQ_MASK);
|
||||
crypto_cipher_set_flags(child, crypto_tfm_get_flags(parent) &
|
||||
CRYPTO_TFM_REQ_MASK);
|
||||
err = crypto_cipher_setkey(child, key + keylen/2, keylen/2);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
crypto_tfm_set_flags(parent, crypto_cipher_get_flags(child) &
|
||||
CRYPTO_TFM_RES_MASK);
|
||||
|
||||
child = ctx->child;
|
||||
|
||||
/* data cipher, uses Key1 i.e. the first half of *key */
|
||||
crypto_cipher_clear_flags(child, CRYPTO_TFM_REQ_MASK);
|
||||
crypto_cipher_set_flags(child, crypto_tfm_get_flags(parent) &
|
||||
CRYPTO_TFM_REQ_MASK);
|
||||
err = crypto_cipher_setkey(child, key, keylen/2);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
crypto_tfm_set_flags(parent, crypto_cipher_get_flags(child) &
|
||||
CRYPTO_TFM_RES_MASK);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
struct sinfo {
|
||||
be128 t;
|
||||
struct crypto_tfm *tfm;
|
||||
void (*fn)(struct crypto_tfm *, u8 *, const u8 *);
|
||||
};
|
||||
|
||||
static inline void xts_round(struct sinfo *s, void *dst, const void *src)
|
||||
{
|
||||
be128_xor(dst, &s->t, src); /* PP <- T xor P */
|
||||
s->fn(s->tfm, dst, dst); /* CC <- E(Key1,PP) */
|
||||
be128_xor(dst, dst, &s->t); /* C <- T xor CC */
|
||||
}
|
||||
|
||||
static int crypt(struct blkcipher_desc *d,
|
||||
struct blkcipher_walk *w, struct priv *ctx,
|
||||
void (*tw)(struct crypto_tfm *, u8 *, const u8 *),
|
||||
void (*fn)(struct crypto_tfm *, u8 *, const u8 *))
|
||||
{
|
||||
int err;
|
||||
unsigned int avail;
|
||||
const int bs = crypto_cipher_blocksize(ctx->child);
|
||||
struct sinfo s = {
|
||||
.tfm = crypto_cipher_tfm(ctx->child),
|
||||
.fn = fn
|
||||
};
|
||||
be128 *iv;
|
||||
u8 *wsrc;
|
||||
u8 *wdst;
|
||||
|
||||
err = blkcipher_walk_virt(d, w);
|
||||
if (!w->nbytes)
|
||||
return err;
|
||||
|
||||
avail = w->nbytes;
|
||||
|
||||
wsrc = w->src.virt.addr;
|
||||
wdst = w->dst.virt.addr;
|
||||
|
||||
/* calculate first value of T */
|
||||
iv = (be128 *)w->iv;
|
||||
tw(crypto_cipher_tfm(ctx->tweak), (void *)&s.t, w->iv);
|
||||
|
||||
goto first;
|
||||
|
||||
for (;;) {
|
||||
do {
|
||||
gf128mul_x_ble(&s.t, &s.t);
|
||||
|
||||
first:
|
||||
xts_round(&s, wdst, wsrc);
|
||||
|
||||
wsrc += bs;
|
||||
wdst += bs;
|
||||
} while ((avail -= bs) >= bs);
|
||||
|
||||
err = blkcipher_walk_done(d, w, avail);
|
||||
if (!w->nbytes)
|
||||
break;
|
||||
|
||||
avail = w->nbytes;
|
||||
|
||||
wsrc = w->src.virt.addr;
|
||||
wdst = w->dst.virt.addr;
|
||||
}
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static int encrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
|
||||
struct scatterlist *src, unsigned int nbytes)
|
||||
{
|
||||
struct priv *ctx = crypto_blkcipher_ctx(desc->tfm);
|
||||
struct blkcipher_walk w;
|
||||
|
||||
blkcipher_walk_init(&w, dst, src, nbytes);
|
||||
return crypt(desc, &w, ctx, crypto_cipher_alg(ctx->tweak)->cia_encrypt,
|
||||
crypto_cipher_alg(ctx->child)->cia_encrypt);
|
||||
}
|
||||
|
||||
static int decrypt(struct blkcipher_desc *desc, struct scatterlist *dst,
|
||||
struct scatterlist *src, unsigned int nbytes)
|
||||
{
|
||||
struct priv *ctx = crypto_blkcipher_ctx(desc->tfm);
|
||||
struct blkcipher_walk w;
|
||||
|
||||
blkcipher_walk_init(&w, dst, src, nbytes);
|
||||
return crypt(desc, &w, ctx, crypto_cipher_alg(ctx->tweak)->cia_encrypt,
|
||||
crypto_cipher_alg(ctx->child)->cia_decrypt);
|
||||
}
|
||||
|
||||
static int init_tfm(struct crypto_tfm *tfm)
|
||||
{
|
||||
struct crypto_cipher *cipher;
|
||||
struct crypto_instance *inst = (void *)tfm->__crt_alg;
|
||||
struct crypto_spawn *spawn = crypto_instance_ctx(inst);
|
||||
struct priv *ctx = crypto_tfm_ctx(tfm);
|
||||
u32 *flags = &tfm->crt_flags;
|
||||
|
||||
cipher = crypto_spawn_cipher(spawn);
|
||||
if (IS_ERR(cipher))
|
||||
return PTR_ERR(cipher);
|
||||
|
||||
if (crypto_cipher_blocksize(cipher) != 16) {
|
||||
*flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN;
|
||||
crypto_free_cipher(cipher);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ctx->child = cipher;
|
||||
|
||||
cipher = crypto_spawn_cipher(spawn);
|
||||
if (IS_ERR(cipher)) {
|
||||
crypto_free_cipher(ctx->child);
|
||||
return PTR_ERR(cipher);
|
||||
}
|
||||
|
||||
/* this check isn't really needed, leave it here just in case */
|
||||
if (crypto_cipher_blocksize(cipher) != 16) {
|
||||
crypto_free_cipher(cipher);
|
||||
crypto_free_cipher(ctx->child);
|
||||
*flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN;
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ctx->tweak = cipher;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void exit_tfm(struct crypto_tfm *tfm)
|
||||
{
|
||||
struct priv *ctx = crypto_tfm_ctx(tfm);
|
||||
crypto_free_cipher(ctx->child);
|
||||
crypto_free_cipher(ctx->tweak);
|
||||
}
|
||||
|
||||
static struct crypto_instance *alloc(struct rtattr **tb)
|
||||
{
|
||||
struct crypto_instance *inst;
|
||||
struct crypto_alg *alg;
|
||||
int err;
|
||||
|
||||
err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_BLKCIPHER);
|
||||
if (err)
|
||||
return ERR_PTR(err);
|
||||
|
||||
alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_CIPHER,
|
||||
CRYPTO_ALG_TYPE_MASK);
|
||||
if (IS_ERR(alg))
|
||||
return ERR_PTR(PTR_ERR(alg));
|
||||
|
||||
inst = crypto_alloc_instance("xts", alg);
|
||||
if (IS_ERR(inst))
|
||||
goto out_put_alg;
|
||||
|
||||
inst->alg.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER;
|
||||
inst->alg.cra_priority = alg->cra_priority;
|
||||
inst->alg.cra_blocksize = alg->cra_blocksize;
|
||||
|
||||
if (alg->cra_alignmask < 7)
|
||||
inst->alg.cra_alignmask = 7;
|
||||
else
|
||||
inst->alg.cra_alignmask = alg->cra_alignmask;
|
||||
|
||||
inst->alg.cra_type = &crypto_blkcipher_type;
|
||||
|
||||
inst->alg.cra_blkcipher.ivsize = alg->cra_blocksize;
|
||||
inst->alg.cra_blkcipher.min_keysize =
|
||||
2 * alg->cra_cipher.cia_min_keysize;
|
||||
inst->alg.cra_blkcipher.max_keysize =
|
||||
2 * alg->cra_cipher.cia_max_keysize;
|
||||
|
||||
inst->alg.cra_ctxsize = sizeof(struct priv);
|
||||
|
||||
inst->alg.cra_init = init_tfm;
|
||||
inst->alg.cra_exit = exit_tfm;
|
||||
|
||||
inst->alg.cra_blkcipher.setkey = setkey;
|
||||
inst->alg.cra_blkcipher.encrypt = encrypt;
|
||||
inst->alg.cra_blkcipher.decrypt = decrypt;
|
||||
|
||||
out_put_alg:
|
||||
crypto_mod_put(alg);
|
||||
return inst;
|
||||
}
|
||||
|
||||
static void free(struct crypto_instance *inst)
|
||||
{
|
||||
crypto_drop_spawn(crypto_instance_ctx(inst));
|
||||
kfree(inst);
|
||||
}
|
||||
|
||||
static struct crypto_template crypto_tmpl = {
|
||||
.name = "xts",
|
||||
.alloc = alloc,
|
||||
.free = free,
|
||||
.module = THIS_MODULE,
|
||||
};
|
||||
|
||||
static int __init crypto_module_init(void)
|
||||
{
|
||||
return crypto_register_template(&crypto_tmpl);
|
||||
}
|
||||
|
||||
static void __exit crypto_module_exit(void)
|
||||
{
|
||||
crypto_unregister_template(&crypto_tmpl);
|
||||
}
|
||||
|
||||
module_init(crypto_module_init);
|
||||
module_exit(crypto_module_exit);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_DESCRIPTION("XTS block cipher mode");
|
||||
|
|
@ -161,6 +161,8 @@ void gf128mul_lle(be128 *a, const be128 *b);
|
|||
|
||||
void gf128mul_bbe(be128 *a, const be128 *b);
|
||||
|
||||
/* multiply by x in ble format, needed by XTS */
|
||||
void gf128mul_x_ble(be128 *a, const be128 *b);
|
||||
|
||||
/* 4k table optimization */
|
||||
|
||||
|
|
|
|||
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