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Diffstat (limited to 'nacl/crypto_stream/salsa20/ref/xor.c')
-rw-r--r--nacl/crypto_stream/salsa20/ref/xor.c52
1 files changed, 0 insertions, 52 deletions
diff --git a/nacl/crypto_stream/salsa20/ref/xor.c b/nacl/crypto_stream/salsa20/ref/xor.c
deleted file mode 100644
index 11c7e9f0..00000000
--- a/nacl/crypto_stream/salsa20/ref/xor.c
+++ /dev/null
@@ -1,52 +0,0 @@
1/*
2version 20080913
3D. J. Bernstein
4Public domain.
5*/
6
7#include "crypto_core_salsa20.h"
8#include "crypto_stream.h"
9
10typedef unsigned int uint32;
11
12static const unsigned char sigma[16] = "expand 32-byte k";
13
14int crypto_stream_xor(
15 unsigned char *c,
16 const unsigned char *m,unsigned long long mlen,
17 const unsigned char *n,
18 const unsigned char *k
19)
20{
21 unsigned char in[16];
22 unsigned char block[64];
23 int i;
24 unsigned int u;
25
26 if (!mlen) return 0;
27
28 for (i = 0;i < 8;++i) in[i] = n[i];
29 for (i = 8;i < 16;++i) in[i] = 0;
30
31 while (mlen >= 64) {
32 crypto_core_salsa20(block,in,k,sigma);
33 for (i = 0;i < 64;++i) c[i] = m[i] ^ block[i];
34
35 u = 1;
36 for (i = 8;i < 16;++i) {
37 u += (unsigned int) in[i];
38 in[i] = u;
39 u >>= 8;
40 }
41
42 mlen -= 64;
43 c += 64;
44 m += 64;
45 }
46
47 if (mlen) {
48 crypto_core_salsa20(block,in,k,sigma);
49 for (i = 0;i < mlen;++i) c[i] = m[i] ^ block[i];
50 }
51 return 0;
52}