diff options
Diffstat (limited to 'nacl/crypto_stream/aes128ctr/portable/common.c')
-rw-r--r-- | nacl/crypto_stream/aes128ctr/portable/common.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/nacl/crypto_stream/aes128ctr/portable/common.c b/nacl/crypto_stream/aes128ctr/portable/common.c new file mode 100644 index 00000000..14a28cc6 --- /dev/null +++ b/nacl/crypto_stream/aes128ctr/portable/common.c | |||
@@ -0,0 +1,64 @@ | |||
1 | #include "common.h" | ||
2 | |||
3 | uint32 load32_bigendian(const unsigned char *x) | ||
4 | { | ||
5 | return | ||
6 | (uint32) (x[3]) \ | ||
7 | | (((uint32) (x[2])) << 8) \ | ||
8 | | (((uint32) (x[1])) << 16) \ | ||
9 | | (((uint32) (x[0])) << 24) | ||
10 | ; | ||
11 | } | ||
12 | |||
13 | void store32_bigendian(unsigned char *x,uint32 u) | ||
14 | { | ||
15 | x[3] = u; u >>= 8; | ||
16 | x[2] = u; u >>= 8; | ||
17 | x[1] = u; u >>= 8; | ||
18 | x[0] = u; | ||
19 | } | ||
20 | |||
21 | uint32 load32_littleendian(const unsigned char *x) | ||
22 | { | ||
23 | return | ||
24 | (uint32) (x[0]) \ | ||
25 | | (((uint32) (x[1])) << 8) \ | ||
26 | | (((uint32) (x[2])) << 16) \ | ||
27 | | (((uint32) (x[3])) << 24) | ||
28 | ; | ||
29 | } | ||
30 | |||
31 | void store32_littleendian(unsigned char *x,uint32 u) | ||
32 | { | ||
33 | x[0] = u; u >>= 8; | ||
34 | x[1] = u; u >>= 8; | ||
35 | x[2] = u; u >>= 8; | ||
36 | x[3] = u; | ||
37 | } | ||
38 | |||
39 | |||
40 | uint64 load64_littleendian(const unsigned char *x) | ||
41 | { | ||
42 | return | ||
43 | (uint64) (x[0]) \ | ||
44 | | (((uint64) (x[1])) << 8) \ | ||
45 | | (((uint64) (x[2])) << 16) \ | ||
46 | | (((uint64) (x[3])) << 24) | ||
47 | | (((uint64) (x[4])) << 32) | ||
48 | | (((uint64) (x[5])) << 40) | ||
49 | | (((uint64) (x[6])) << 48) | ||
50 | | (((uint64) (x[7])) << 56) | ||
51 | ; | ||
52 | } | ||
53 | |||
54 | void store64_littleendian(unsigned char *x,uint64 u) | ||
55 | { | ||
56 | x[0] = u; u >>= 8; | ||
57 | x[1] = u; u >>= 8; | ||
58 | x[2] = u; u >>= 8; | ||
59 | x[3] = u; u >>= 8; | ||
60 | x[4] = u; u >>= 8; | ||
61 | x[5] = u; u >>= 8; | ||
62 | x[6] = u; u >>= 8; | ||
63 | x[7] = u; | ||
64 | } | ||