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authorLinus Nordberg <linus@nordberg.se>2019-12-18 23:35:46 +0100
committerLinus Nordberg <linus@nordberg.se>2020-01-21 16:07:30 +0100
commit41eb060367b91415aadea26f63efc3db8fdbc92b (patch)
tree49e3d625c250f18b7704ac25537e2e96f46ebcda /src/cc20rng/cc20_prng.c
parent15f056ce2278c75f7eadb3a33ffe7de6c21ab3b4 (diff)
[cc20rng] Code formatting changes
Keep indentation level 2 in main.c to minimise changes.
Diffstat (limited to 'src/cc20rng/cc20_prng.c')
-rw-r--r--src/cc20rng/cc20_prng.c87
1 files changed, 45 insertions, 42 deletions
diff --git a/src/cc20rng/cc20_prng.c b/src/cc20rng/cc20_prng.c
index 3d52fc6..50739bd 100644
--- a/src/cc20rng/cc20_prng.c
+++ b/src/cc20rng/cc20_prng.c
@@ -44,12 +44,13 @@
void _dump(struct cc20_state *cc, char *str);
#endif
-inline uint32_t rotl32 (uint32_t x, uint32_t n)
+inline uint32_t rotl32(uint32_t x, uint32_t n)
{
return (x << n) | (x >> (32 - n));
}
-inline void _qr(struct cc20_state *cc, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
+inline void _qr(struct cc20_state *cc, uint32_t a, uint32_t b, uint32_t c,
+ uint32_t d)
{
cc->i[a] += cc->i[b];
cc->i[d] ^= cc->i[a];
@@ -72,11 +73,12 @@ void chacha20_prng_reseed(struct cc20_state *cc, uint32_t *entropy)
{
uint32_t i = 256 / 8 / 4;
while (i--) {
- cc->i[i] = entropy[i];
+ cc->i[i] = entropy[i];
}
}
-void chacha20_prng_block(struct cc20_state *cc, uint32_t block_counter, struct cc20_state *out)
+void chacha20_prng_block(struct cc20_state *cc, uint32_t block_counter,
+ struct cc20_state *out)
{
uint32_t i;
@@ -88,22 +90,22 @@ void chacha20_prng_block(struct cc20_state *cc, uint32_t block_counter, struct c
cc->i[12] = block_counter;
for (i = 4; i < CHACHA20_NUM_WORDS; i++) {
- out->i[i] = cc->i[i];
+ out->i[i] = cc->i[i];
}
for (i = 10; i; i--) {
- _qr(out, 0, 4, 8,12);
- _qr(out, 1, 5, 9,13);
- _qr(out, 2, 6,10,14);
- _qr(out, 3, 7,11,15);
- _qr(out, 0, 5,10,15);
- _qr(out, 1, 6,11,12);
- _qr(out, 2, 7, 8,13);
- _qr(out, 3, 4, 9,14);
+ _qr(out, 0, 4, 8, 12);
+ _qr(out, 1, 5, 9, 13);
+ _qr(out, 2, 6, 10, 14);
+ _qr(out, 3, 7, 11, 15);
+ _qr(out, 0, 5, 10, 15);
+ _qr(out, 1, 6, 11, 12);
+ _qr(out, 2, 7, 8, 13);
+ _qr(out, 3, 4, 9, 14);
}
for (i = 0; i < CHACHA20_NUM_WORDS; i++) {
- out->i[i] += cc->i[i];
+ out->i[i] += cc->i[i];
}
}
@@ -119,11 +121,11 @@ int chacha20_prng_self_test1()
0x00000001, 0x09000000, 0x4a000000, 0x00000000,
}};
struct cc20_state expected = {
- {0xe4e7f110, 0x15593bd1, 0x1fdd0f50, 0xc47120a3,
- 0xc7f4d1c7, 0x0368c033, 0x9aaa2204, 0x4e6cd4c3,
- 0x466482d2, 0x09aa9f07, 0x05d7c214, 0xa2028bd9,
- 0xd19c12b5, 0xb94e16de, 0xe883d0cb, 0x4e3c50a2,
- }};
+ {0xe4e7f110, 0x15593bd1, 0x1fdd0f50, 0xc47120a3,
+ 0xc7f4d1c7, 0x0368c033, 0x9aaa2204, 0x4e6cd4c3,
+ 0x466482d2, 0x09aa9f07, 0x05d7c214, 0xa2028bd9,
+ 0xd19c12b5, 0xb94e16de, 0xe883d0cb, 0x4e3c50a2,
+ }};
uint32_t i;
struct cc20_state out;
@@ -137,7 +139,8 @@ int chacha20_prng_self_test1()
#endif
for (i = 0; i < CHACHA20_NUM_WORDS; i++) {
- if (out.i[i] != expected.i[i]) return 0;
+ if (out.i[i] != expected.i[i])
+ return 0;
}
return 1;
@@ -149,23 +152,23 @@ int chacha20_prng_self_test2()
* https://tools.ietf.org/html/rfc7539#section-2.4.2
*/
struct cc20_state test = {
- {0x61707865, 0x3320646e, 0x79622d32, 0x6b206574,
- 0x03020100, 0x07060504, 0x0b0a0908, 0x0f0e0d0c,
- 0x13121110, 0x17161514, 0x1b1a1918, 0x1f1e1d1c,
- 0x00000001, 0x00000000, 0x4a000000, 0x00000000,
- }};
+ {0x61707865, 0x3320646e, 0x79622d32, 0x6b206574,
+ 0x03020100, 0x07060504, 0x0b0a0908, 0x0f0e0d0c,
+ 0x13121110, 0x17161514, 0x1b1a1918, 0x1f1e1d1c,
+ 0x00000001, 0x00000000, 0x4a000000, 0x00000000,
+ }};
struct cc20_state expected1 = {
- {0xf3514f22, 0xe1d91b40, 0x6f27de2f, 0xed1d63b8,
- 0x821f138c, 0xe2062c3d, 0xecca4f7e, 0x78cff39e,
- 0xa30a3b8a, 0x920a6072, 0xcd7479b5, 0x34932bed,
- 0x40ba4c79, 0xcd343ec6, 0x4c2c21ea, 0xb7417df0,
- }};
+ {0xf3514f22, 0xe1d91b40, 0x6f27de2f, 0xed1d63b8,
+ 0x821f138c, 0xe2062c3d, 0xecca4f7e, 0x78cff39e,
+ 0xa30a3b8a, 0x920a6072, 0xcd7479b5, 0x34932bed,
+ 0x40ba4c79, 0xcd343ec6, 0x4c2c21ea, 0xb7417df0,
+ }};
struct cc20_state expected2 = {
- {0x9f74a669, 0x410f633f, 0x28feca22, 0x7ec44dec,
- 0x6d34d426, 0x738cb970, 0x3ac5e9f3, 0x45590cc4,
- 0xda6e8b39, 0x892c831a, 0xcdea67c1, 0x2b7e1d90,
- 0x037463f3, 0xa11a2073, 0xe8bcfb88, 0xedc49139,
- }};
+ {0x9f74a669, 0x410f633f, 0x28feca22, 0x7ec44dec,
+ 0x6d34d426, 0x738cb970, 0x3ac5e9f3, 0x45590cc4,
+ 0xda6e8b39, 0x892c831a, 0xcdea67c1, 0x2b7e1d90,
+ 0x037463f3, 0xa11a2073, 0xe8bcfb88, 0xedc49139,
+ }};
struct cc20_state out;
uint32_t i;
@@ -178,7 +181,8 @@ int chacha20_prng_self_test2()
_dump(&out, "First block");
#endif
for (i = 0; i < CHACHA20_NUM_WORDS; i++) {
- if (out.i[i] != expected1.i[i]) return 0;
+ if (out.i[i] != expected1.i[i])
+ return 0;
}
chacha20_prng_block(&test, 2, &out);
@@ -186,7 +190,8 @@ int chacha20_prng_self_test2()
_dump(&out, "Second block");
#endif
for (i = 0; i < CHACHA20_NUM_WORDS; i++) {
- if (out.i[i] != expected2.i[i]) return 0;
+ if (out.i[i] != expected2.i[i])
+ return 0;
}
return 1;
@@ -201,8 +206,8 @@ void _dump(struct cc20_state *cc, char *str)
printf("%s\n", str);
for (i = 0; i < 4; i++) {
- printf("%02i %08x %08x %08x %08x\n", i * 4, cc->i[i * 4 + 0],
- cc->i[i * 4 + 1], cc->i[i * 4 + 2], cc->i[i * 4 + 3]);
+ printf("%02i %08x %08x %08x %08x\n", i * 4, cc->i[i * 4 + 0],
+ cc->i[i * 4 + 1], cc->i[i * 4 + 2], cc->i[i * 4 + 3]);
}
printf("\n");
}
@@ -213,7 +218,5 @@ void _dump(struct cc20_state *cc, char *str)
*/
int chacha20_prng_self_test()
{
- return \
- chacha20_prng_self_test1() && \
- chacha20_prng_self_test2();
+ return chacha20_prng_self_test1() && chacha20_prng_self_test2();
}