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xor_salsa2012.c is not used any more

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Frank Denis
2017-02-26 17:21:13 +01:00
parent 199aa0efa2
commit 47a3461793
1 changed files with 0 additions and 106 deletions
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src/libsodium/crypto_stream/salsa2012/ref/xor_salsa2012.c
-106
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@@ -1,106 +0,0 @@
/*
version 20140420
D. J. Bernstein
Public domain.
*/
#include <stdint.h>
#include "crypto_core_salsa2012.h"
#include "crypto_stream_salsa2012.h"
#include "utils.h"
int
crypto_stream_salsa2012(unsigned char *c, unsigned long long clen,
const unsigned char *n, const unsigned char *k)
{
unsigned char in[16];
unsigned char block[64];
unsigned char kcopy[32];
unsigned int i;
unsigned int u;
if (!clen) {
return 0;
}
for (i = 0; i < 32; ++i) {
kcopy[i] = k[i];
}
for (i = 0; i < 8; ++i) {
in[i] = n[i];
}
for (i = 8; i < 16; ++i) {
in[i] = 0;
}
while (clen >= 64) {
crypto_core_salsa2012(c, in, kcopy, NULL);
u = 1;
for (i = 8; i < 16; ++i) {
u += (unsigned int)in[i];
in[i] = u;
u >>= 8;
}
clen -= 64;
c += 64;
}
if (clen) {
crypto_core_salsa2012(block, in, kcopy, NULL);
for (i = 0; i < (unsigned int)clen; ++i) {
c[i] = block[i];
}
}
sodium_memzero(block, sizeof block);
sodium_memzero(kcopy, sizeof kcopy);
return 0;
}
int
crypto_stream_salsa2012_xor(unsigned char *c, const unsigned char *m,
unsigned long long mlen, const unsigned char *n,
const unsigned char *k)
{
unsigned char in[16];
unsigned char block[64];
unsigned char kcopy[32];
unsigned int i;
unsigned int u;
if (!mlen) {
return 0;
}
for (i = 0; i < 32; ++i) {
kcopy[i] = k[i];
}
for (i = 0; i < 8; ++i) {
in[i] = n[i];
}
for (i = 8; i < 16; ++i) {
in[i] = 0;
}
while (mlen >= 64) {
crypto_core_salsa2012(block, in, kcopy, NULL);
for (i = 0; i < 64; ++i) {
c[i] = m[i] ^ block[i];
}
u = 1;
for (i = 8; i < 16; ++i) {
u += (unsigned int)in[i];
in[i] = u;
u >>= 8;
}
mlen -= 64;
c += 64;
m += 64;
}
if (mlen) {
crypto_core_salsa2012(block, in, kcopy, NULL);
for (i = 0; i < (unsigned int)mlen; ++i) {
c[i] = m[i] ^ block[i];
}
}
sodium_memzero(block, sizeof block);
sodium_memzero(kcopy, sizeof kcopy);
return 0;
}