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-rw-r--r--src/libcryptobox/chacha20/chacha.c143
1 files changed, 71 insertions, 72 deletions
diff --git a/src/libcryptobox/chacha20/chacha.c b/src/libcryptobox/chacha20/chacha.c
index 653c614d9..0b471c80a 100644
--- a/src/libcryptobox/chacha20/chacha.c
+++ b/src/libcryptobox/chacha20/chacha.c
@@ -32,37 +32,39 @@ extern unsigned cpu_config;
typedef struct chacha_impl_t {
unsigned long cpu_flags;
const char *desc;
- void (*chacha) (const chacha_key *key, const chacha_iv *iv,
- const unsigned char *in, unsigned char *out, size_t inlen,
- size_t rounds);
- void (*xchacha) (const chacha_key *key, const chacha_iv24 *iv,
- const unsigned char *in, unsigned char *out, size_t inlen,
- size_t rounds);
- void (*chacha_blocks) (chacha_state_internal *state,
- const unsigned char *in, unsigned char *out, size_t bytes);
- void (*hchacha) (const unsigned char key[32], const unsigned char iv[16],
- unsigned char out[32], size_t rounds);
+ void (*chacha)(const chacha_key *key, const chacha_iv *iv,
+ const unsigned char *in, unsigned char *out, size_t inlen,
+ size_t rounds);
+ void (*xchacha)(const chacha_key *key, const chacha_iv24 *iv,
+ const unsigned char *in, unsigned char *out, size_t inlen,
+ size_t rounds);
+ void (*chacha_blocks)(chacha_state_internal *state,
+ const unsigned char *in, unsigned char *out, size_t bytes);
+ void (*hchacha)(const unsigned char key[32], const unsigned char iv[16],
+ unsigned char out[32], size_t rounds);
} chacha_impl_t;
-#define CHACHA_DECLARE(ext) \
- void chacha_##ext(const chacha_key *key, const chacha_iv *iv, const unsigned char *in, unsigned char *out, size_t inlen, size_t rounds); \
- void xchacha_##ext(const chacha_key *key, const chacha_iv24 *iv, const unsigned char *in, unsigned char *out, size_t inlen, size_t rounds); \
- void chacha_blocks_##ext(chacha_state_internal *state, const unsigned char *in, unsigned char *out, size_t bytes); \
- void hchacha_##ext(const unsigned char key[32], const unsigned char iv[16], unsigned char out[32], size_t rounds);
-#define CHACHA_IMPL(cpuflags, desc, ext) \
- {(cpuflags), desc, chacha_##ext, xchacha_##ext, chacha_blocks_##ext, hchacha_##ext}
+#define CHACHA_DECLARE(ext) \
+ void chacha_##ext(const chacha_key *key, const chacha_iv *iv, const unsigned char *in, unsigned char *out, size_t inlen, size_t rounds); \
+ void xchacha_##ext(const chacha_key *key, const chacha_iv24 *iv, const unsigned char *in, unsigned char *out, size_t inlen, size_t rounds); \
+ void chacha_blocks_##ext(chacha_state_internal *state, const unsigned char *in, unsigned char *out, size_t bytes); \
+ void hchacha_##ext(const unsigned char key[32], const unsigned char iv[16], unsigned char out[32], size_t rounds);
+#define CHACHA_IMPL(cpuflags, desc, ext) \
+ { \
+ (cpuflags), desc, chacha_##ext, xchacha_##ext, chacha_blocks_##ext, hchacha_##ext \
+ }
#if defined(HAVE_AVX2) && defined(__x86_64__)
- CHACHA_DECLARE(avx2)
- #define CHACHA_AVX2 CHACHA_IMPL(CPUID_AVX2, "avx2", avx2)
+CHACHA_DECLARE(avx2)
+#define CHACHA_AVX2 CHACHA_IMPL(CPUID_AVX2, "avx2", avx2)
#endif
#if defined(HAVE_AVX) && defined(__x86_64__)
- CHACHA_DECLARE(avx)
- #define CHACHA_AVX CHACHA_IMPL(CPUID_AVX, "avx", avx)
+CHACHA_DECLARE(avx)
+#define CHACHA_AVX CHACHA_IMPL(CPUID_AVX, "avx", avx)
#endif
#if defined(HAVE_SSE2) && defined(__x86_64__)
- CHACHA_DECLARE(sse2)
- #define CHACHA_SSE2 CHACHA_IMPL(CPUID_SSE2, "sse2", sse2)
+CHACHA_DECLARE(sse2)
+#define CHACHA_SSE2 CHACHA_IMPL(CPUID_SSE2, "sse2", sse2)
#endif
CHACHA_DECLARE(ref)
@@ -84,18 +86,18 @@ static const chacha_impl_t chacha_list[] = {
static const chacha_impl_t *chacha_impl = &chacha_list[0];
static int
-chacha_is_aligned (const void *p)
+chacha_is_aligned(const void *p)
{
return ((size_t) p & (sizeof(size_t) - 1)) == 0;
}
const char *
-chacha_load (void)
+chacha_load(void)
{
guint i;
if (cpu_config != 0) {
- for (i = 0; i < G_N_ELEMENTS (chacha_list); i ++) {
+ for (i = 0; i < G_N_ELEMENTS(chacha_list); i++) {
if (chacha_list[i].cpu_flags & cpu_config) {
chacha_impl = &chacha_list[i];
break;
@@ -106,21 +108,21 @@ chacha_load (void)
return chacha_impl->desc;
}
-void chacha_init (chacha_state *S, const chacha_key *key,
- const chacha_iv *iv, size_t rounds)
+void chacha_init(chacha_state *S, const chacha_key *key,
+ const chacha_iv *iv, size_t rounds)
{
chacha_state_internal *state = (chacha_state_internal *) S;
- memcpy (state->s + 0, key, 32);
- memset (state->s + 32, 0, 8);
- memcpy (state->s + 40, iv, 8);
+ memcpy(state->s + 0, key, 32);
+ memset(state->s + 32, 0, 8);
+ memcpy(state->s + 40, iv, 8);
state->rounds = rounds;
state->leftover = 0;
}
/* processes inlen bytes (can do partial blocks), handling input/output alignment */
static void
-chacha_consume (chacha_state_internal *state,
- const unsigned char *in, unsigned char *out, size_t inlen)
+chacha_consume(chacha_state_internal *state,
+ const unsigned char *in, unsigned char *out, size_t inlen)
{
unsigned char buffer[16 * CHACHA_BLOCKBYTES];
int in_aligned, out_aligned;
@@ -130,10 +132,10 @@ chacha_consume (chacha_state_internal *state,
return;
/* if everything is aligned, handle directly */
- in_aligned = chacha_is_aligned (in);
- out_aligned = chacha_is_aligned (out);
+ in_aligned = chacha_is_aligned(in);
+ out_aligned = chacha_is_aligned(out);
if (in_aligned && out_aligned) {
- chacha_impl->chacha_blocks (state, in, out, inlen);
+ chacha_impl->chacha_blocks(state, in, out, inlen);
return;
}
@@ -143,12 +145,12 @@ chacha_consume (chacha_state_internal *state,
const unsigned char *src = in;
unsigned char *dst = (out_aligned) ? out : buffer;
if (!in_aligned) {
- memcpy (buffer, in, bytes);
+ memcpy(buffer, in, bytes);
src = buffer;
}
- chacha_impl->chacha_blocks (state, src, dst, bytes);
+ chacha_impl->chacha_blocks(state, src, dst, bytes);
if (!out_aligned)
- memcpy (out, buffer, bytes);
+ memcpy(out, buffer, bytes);
if (in)
in += bytes;
out += bytes;
@@ -157,16 +159,16 @@ chacha_consume (chacha_state_internal *state,
}
/* hchacha */
-void hchacha (const unsigned char key[32],
- const unsigned char iv[16], unsigned char out[32], size_t rounds)
+void hchacha(const unsigned char key[32],
+ const unsigned char iv[16], unsigned char out[32], size_t rounds)
{
- chacha_impl->hchacha (key, iv, out, rounds);
+ chacha_impl->hchacha(key, iv, out, rounds);
}
/* update, returns number of bytes written to out */
size_t
-chacha_update (chacha_state *S, const unsigned char *in, unsigned char *out,
- size_t inlen)
+chacha_update(chacha_state *S, const unsigned char *in, unsigned char *out,
+ size_t inlen)
{
chacha_state_internal *state = (chacha_state_internal *) S;
unsigned char *out_start = out;
@@ -178,11 +180,11 @@ chacha_update (chacha_state *S, const unsigned char *in, unsigned char *out,
if (state->leftover) {
bytes = (CHACHA_BLOCKBYTES - state->leftover);
if (in) {
- memcpy (state->buffer + state->leftover, in, bytes);
+ memcpy(state->buffer + state->leftover, in, bytes);
in += bytes;
}
- chacha_consume (state, (in) ? state->buffer : NULL, out,
- CHACHA_BLOCKBYTES);
+ chacha_consume(state, (in) ? state->buffer : NULL, out,
+ CHACHA_BLOCKBYTES);
inlen -= bytes;
out += CHACHA_BLOCKBYTES;
state->leftover = 0;
@@ -191,7 +193,7 @@ chacha_update (chacha_state *S, const unsigned char *in, unsigned char *out,
/* handle the direct data */
bytes = (inlen & ~(CHACHA_BLOCKBYTES - 1));
if (bytes) {
- chacha_consume (state, in, out, bytes);
+ chacha_consume(state, in, out, bytes);
inlen -= bytes;
if (in)
in += bytes;
@@ -202,9 +204,9 @@ chacha_update (chacha_state *S, const unsigned char *in, unsigned char *out,
/* handle leftover data */
if (inlen) {
if (in)
- memcpy (state->buffer + state->leftover, in, inlen);
+ memcpy(state->buffer + state->leftover, in, inlen);
else
- memset (state->buffer + state->leftover, 0, inlen);
+ memset(state->buffer + state->leftover, 0, inlen);
state->leftover += inlen;
}
@@ -213,51 +215,48 @@ chacha_update (chacha_state *S, const unsigned char *in, unsigned char *out,
/* finalize, write out any leftover data */
size_t
-chacha_final (chacha_state *S, unsigned char *out)
+chacha_final(chacha_state *S, unsigned char *out)
{
chacha_state_internal *state = (chacha_state_internal *) S;
size_t leftover = state->leftover;
if (leftover) {
- if (chacha_is_aligned (out)) {
- chacha_impl->chacha_blocks (state, state->buffer, out, leftover);
+ if (chacha_is_aligned(out)) {
+ chacha_impl->chacha_blocks(state, state->buffer, out, leftover);
}
else {
- chacha_impl->chacha_blocks (state, state->buffer, state->buffer,
- leftover);
- memcpy (out, state->buffer, leftover);
+ chacha_impl->chacha_blocks(state, state->buffer, state->buffer,
+ leftover);
+ memcpy(out, state->buffer, leftover);
}
}
- rspamd_explicit_memzero (S, sizeof(chacha_state));
+ rspamd_explicit_memzero(S, sizeof(chacha_state));
return leftover;
}
/* one-shot, input/output assumed to be word aligned */
-void
-chacha (const chacha_key *key, const chacha_iv *iv,
- const unsigned char *in, unsigned char *out, size_t inlen,
- size_t rounds)
+void chacha(const chacha_key *key, const chacha_iv *iv,
+ const unsigned char *in, unsigned char *out, size_t inlen,
+ size_t rounds)
{
- chacha_impl->chacha (key, iv, in, out, inlen, rounds);
+ chacha_impl->chacha(key, iv, in, out, inlen, rounds);
}
/*
xchacha, chacha with a 192 bit nonce
*/
-void
-xchacha_init (chacha_state *S, const chacha_key *key,
- const chacha_iv24 *iv, size_t rounds)
+void xchacha_init(chacha_state *S, const chacha_key *key,
+ const chacha_iv24 *iv, size_t rounds)
{
chacha_key subkey;
- hchacha (key->b, iv->b, subkey.b, rounds);
- chacha_init (S, &subkey, (chacha_iv *) (iv->b + 16), rounds);
+ hchacha(key->b, iv->b, subkey.b, rounds);
+ chacha_init(S, &subkey, (chacha_iv *) (iv->b + 16), rounds);
}
/* one-shot, input/output assumed to be word aligned */
-void
-xchacha (const chacha_key *key, const chacha_iv24 *iv,
- const unsigned char *in, unsigned char *out, size_t inlen,
- size_t rounds)
+void xchacha(const chacha_key *key, const chacha_iv24 *iv,
+ const unsigned char *in, unsigned char *out, size_t inlen,
+ size_t rounds)
{
- chacha_impl->xchacha (key, iv, in, out, inlen, rounds);
+ chacha_impl->xchacha(key, iv, in, out, inlen, rounds);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 05:13:45 +0000