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Linshizhi
ffmpeg.wasm-core
Commits
43bbc3f4
Commit
43bbc3f4
authored
Oct 08, 2012
by
Michael Niedermayer
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xtea: give constants the correct type
Signed-off-by:
Michael Niedermayer
<
michaelni@gmx.at
>
parent
89074e90
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1 changed file
with
4 additions
and
4 deletions
+4
-4
xtea.c
libavutil/xtea.c
+4
-4
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libavutil/xtea.c
View file @
43bbc3f4
...
@@ -50,7 +50,7 @@ static void xtea_crypt_ecb(AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
...
@@ -50,7 +50,7 @@ static void xtea_crypt_ecb(AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
if
(
decrypt
)
{
if
(
decrypt
)
{
#if CONFIG_SMALL
#if CONFIG_SMALL
int
i
;
int
i
;
uint32_t
delta
=
0x9E3779B9
,
sum
=
delta
*
32
;
uint32_t
delta
=
0x9E3779B9
U
,
sum
=
delta
*
32
;
for
(
i
=
0
;
i
<
32
;
i
++
)
{
for
(
i
=
0
;
i
<
32
;
i
++
)
{
v1
-=
(((
v0
<<
4
)
^
(
v0
>>
5
))
+
v0
)
^
(
sum
+
ctx
->
key
[(
sum
>>
11
)
&
3
]);
v1
-=
(((
v0
<<
4
)
^
(
v0
>>
5
))
+
v0
)
^
(
sum
+
ctx
->
key
[(
sum
>>
11
)
&
3
]);
...
@@ -60,7 +60,7 @@ static void xtea_crypt_ecb(AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
...
@@ -60,7 +60,7 @@ static void xtea_crypt_ecb(AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
#else
#else
#define DSTEP(SUM, K0, K1) \
#define DSTEP(SUM, K0, K1) \
v1 -= (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (SUM + K0); \
v1 -= (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (SUM + K0); \
v0 -= (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (SUM - 0x9E3779B9 + K1)
v0 -= (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (SUM - 0x9E3779B9
U
+ K1)
DSTEP
(
0xC6EF3720U
,
k2
,
k3
);
DSTEP
(
0xC6EF3720U
,
k2
,
k3
);
DSTEP
(
0x28B7BD67U
,
k3
,
k2
);
DSTEP
(
0x28B7BD67U
,
k3
,
k2
);
...
@@ -103,7 +103,7 @@ static void xtea_crypt_ecb(AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
...
@@ -103,7 +103,7 @@ static void xtea_crypt_ecb(AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
}
else
{
}
else
{
#if CONFIG_SMALL
#if CONFIG_SMALL
int
i
;
int
i
;
uint32_t
sum
=
0
,
delta
=
0x9E3779B9
;
uint32_t
sum
=
0
,
delta
=
0x9E3779B9
U
;
for
(
i
=
0
;
i
<
32
;
i
++
)
{
for
(
i
=
0
;
i
<
32
;
i
++
)
{
v0
+=
(((
v1
<<
4
)
^
(
v1
>>
5
))
+
v1
)
^
(
sum
+
ctx
->
key
[
sum
&
3
]);
v0
+=
(((
v1
<<
4
)
^
(
v1
>>
5
))
+
v1
)
^
(
sum
+
ctx
->
key
[
sum
&
3
]);
...
@@ -113,7 +113,7 @@ static void xtea_crypt_ecb(AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
...
@@ -113,7 +113,7 @@ static void xtea_crypt_ecb(AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
#else
#else
#define ESTEP(SUM, K0, K1) \
#define ESTEP(SUM, K0, K1) \
v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (SUM + K0);\
v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (SUM + K0);\
v1 += (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (SUM + 0x9E3779B9 + K1)
v1 += (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (SUM + 0x9E3779B9
U
+ K1)
ESTEP
(
0x00000000U
,
k0
,
k3
);
ESTEP
(
0x00000000U
,
k0
,
k3
);
ESTEP
(
0x9E3779B9U
,
k1
,
k2
);
ESTEP
(
0x9E3779B9U
,
k1
,
k2
);
ESTEP
(
0x3C6EF372U
,
k2
,
k1
);
ESTEP
(
0x3C6EF372U
,
k2
,
k1
);
...
...
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