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Marcus Hoffmann
nettle
Commits
4672f5dd
Commit
4672f5dd
authored
Mar 31, 2012
by
Niels Möller
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Use LE_READ_UINT32.
parent
e2da8384
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2
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15 deletions
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ChangeLog
ChangeLog
+3
-0
salsa20.c
salsa20.c
+14
-15
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ChangeLog
View file @
4672f5dd
...
...
@@ -2,6 +2,9 @@
* salsa20.c: (salsa20_set_iv): Deleted size argument, only one
size allowed.
(U8TO32_LITTLE): Deleted macro. Use LE_READ_UINT32 instead, which
avoids unaligned reads.
* nettle-internal.c (salsa20_set_key_hack): Updated salsa20_set_iv
call.
* testsuite/salsa20-test.c (test_salsa20): Deleted iv_length
...
...
salsa20.c
View file @
4672f5dd
...
...
@@ -49,7 +49,6 @@
#define U32TO32_LITTLE(v) (v)
#endif
#define U8TO32_LITTLE(p) U32TO32_LITTLE(((uint32_t*)(p))[0])
#define U32TO8_LITTLE(p, v) (((uint32_t*)(p))[0] = U32TO32_LITTLE(v))
static
void
salsa20_wordtobyte
(
uint8_t
output
[
SALSA20_BLOCK_SIZE
],
const
uint32_t
input
[
_SALSA20_INPUT_LENGTH
])
...
...
@@ -107,31 +106,31 @@ salsa20_set_key(struct salsa20_ctx *ctx,
assert
(
length
==
SALSA20_MIN_KEY_SIZE
||
length
==
SALSA20_MAX_KEY_SIZE
);
ctx
->
input
[
1
]
=
U8TO32_LITTLE
(
key
+
0
);
ctx
->
input
[
2
]
=
U8TO32_LITTLE
(
key
+
4
);
ctx
->
input
[
3
]
=
U8TO32_LITTLE
(
key
+
8
);
ctx
->
input
[
4
]
=
U8TO32_LITTLE
(
key
+
12
);
ctx
->
input
[
1
]
=
LE_READ_UINT32
(
key
+
0
);
ctx
->
input
[
2
]
=
LE_READ_UINT32
(
key
+
4
);
ctx
->
input
[
3
]
=
LE_READ_UINT32
(
key
+
8
);
ctx
->
input
[
4
]
=
LE_READ_UINT32
(
key
+
12
);
if
(
length
==
SALSA20_MAX_KEY_SIZE
)
{
/* recommended */
key
+=
16
;
constants
=
sigma
;
}
else
{
/* kbits == 128 */
constants
=
tau
;
}
ctx
->
input
[
11
]
=
U8TO32_LITTLE
(
key
+
0
);
ctx
->
input
[
12
]
=
U8TO32_LITTLE
(
key
+
4
);
ctx
->
input
[
13
]
=
U8TO32_LITTLE
(
key
+
8
);
ctx
->
input
[
14
]
=
U8TO32_LITTLE
(
key
+
12
);
ctx
->
input
[
0
]
=
U8TO32_LITTLE
(
constants
+
0
);
ctx
->
input
[
5
]
=
U8TO32_LITTLE
(
constants
+
4
);
ctx
->
input
[
10
]
=
U8TO32_LITTLE
(
constants
+
8
);
ctx
->
input
[
15
]
=
U8TO32_LITTLE
(
constants
+
12
);
ctx
->
input
[
11
]
=
LE_READ_UINT32
(
key
+
0
);
ctx
->
input
[
12
]
=
LE_READ_UINT32
(
key
+
4
);
ctx
->
input
[
13
]
=
LE_READ_UINT32
(
key
+
8
);
ctx
->
input
[
14
]
=
LE_READ_UINT32
(
key
+
12
);
ctx
->
input
[
0
]
=
LE_READ_UINT32
(
constants
+
0
);
ctx
->
input
[
5
]
=
LE_READ_UINT32
(
constants
+
4
);
ctx
->
input
[
10
]
=
LE_READ_UINT32
(
constants
+
8
);
ctx
->
input
[
15
]
=
LE_READ_UINT32
(
constants
+
12
);
}
void
salsa20_set_iv
(
struct
salsa20_ctx
*
ctx
,
const
uint8_t
*
iv
)
{
ctx
->
input
[
6
]
=
U8TO32_LITTLE
(
iv
+
0
);
ctx
->
input
[
7
]
=
U8TO32_LITTLE
(
iv
+
4
);
ctx
->
input
[
6
]
=
LE_READ_UINT32
(
iv
+
0
);
ctx
->
input
[
7
]
=
LE_READ_UINT32
(
iv
+
4
);
ctx
->
input
[
8
]
=
0
;
ctx
->
input
[
9
]
=
0
;
}
...
...
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