kris/pqcrypto
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Code Issues 1 Releases Wiki Activity

Explicit casts in conversions

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This commit is contained in:
Thom Wiggers 2019-02-27 16:19:00 +01:00
parent 4d4504ac20
commit 06955dfc21
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GPG Key ID: 001BB0A7CE26E363
3 changed files with 52 additions and 52 deletions
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2
common/fips202.c
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@ -41,7 +41,7 @@ static uint64_t load64(const uint8_t *x) {
**************************************************/ **************************************************/
static void store64(uint8_t *x, uint64_t u) { static void store64(uint8_t *x, uint64_t u) {
for (size_t i = 0; i < 8; ++i) { for (size_t i = 0; i < 8; ++i) {
x[i] = u >> 8 * i; x[i] = (uint8_t) (u >> 8 * i);
} }
} }

8
common/randombytes.c
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@ -111,7 +111,7 @@ static int randombytes_linux_randombytes_getrandom(void *buf, size_t n) {
* (250 MB/s on my laptop). * (250 MB/s on my laptop).
*/ */
size_t offset = 0, chunk; size_t offset = 0, chunk;
int ret; long int ret;
while (n > 0) { while (n > 0) {
/* getrandom does not allow chunks larger than 33554431 */ /* getrandom does not allow chunks larger than 33554431 */
chunk = n <= 33554431 ? n : 33554431; chunk = n <= 33554431 ? n : 33554431;
@ -119,10 +119,10 @@ static int randombytes_linux_randombytes_getrandom(void *buf, size_t n) {
ret = syscall(SYS_getrandom, (char *)buf + offset, chunk, 0); ret = syscall(SYS_getrandom, (char *)buf + offset, chunk, 0);
} while (ret == -1 && errno == EINTR); } while (ret == -1 && errno == EINTR);
if (ret < 0) { if (ret < 0) {
return ret; return (int) ret;
} }
offset += ret; offset += (size_t) ret;
n -= ret; n -= (size_t) ret;
} }
assert(n == 0); assert(n == 0);
return 0; return 0;

90
common/sha2.c
View File

@ -15,21 +15,21 @@ static uint64_t load_bigendian(const unsigned char *x) {
} }
static void store_bigendian(uint8_t *x, uint64_t u) { static void store_bigendian(uint8_t *x, uint64_t u) {
x[7] = u; x[7] = (uint8_t) u;
u >>= 8; u >>= 8;
x[6] = u; x[6] = (uint8_t) u;
u >>= 8; u >>= 8;
x[5] = u; x[5] = (uint8_t) u;
u >>= 8; u >>= 8;
x[4] = u; x[4] = (uint8_t) u;
u >>= 8; u >>= 8;
x[3] = u; x[3] = (uint8_t) u;
u >>= 8; u >>= 8;
x[2] = u; x[2] = (uint8_t) u;
u >>= 8; u >>= 8;
x[1] = u; x[1] = (uint8_t) u;
u >>= 8; u >>= 8;
x[0] = u; x[0] = (uint8_t) u;
} }
#define SHR(x, c) ((x) >> (c)) #define SHR(x, c) ((x) >> (c))
@ -74,7 +74,7 @@ static void store_bigendian(uint8_t *x, uint64_t u) {
b = a; \ b = a; \
a = T1 + T2; a = T1 + T2;
static int crypto_hashblocks_sha512(uint8_t *statebytes, static size_t crypto_hashblocks_sha512(uint8_t *statebytes,
const uint8_t *in, const uint8_t *in,
size_t inlen) { size_t inlen) {
uint64_t state[8]; uint64_t state[8];
@ -294,29 +294,29 @@ int sha384(uint8_t *out, const uint8_t *in, size_t inlen) {
for (size_t i = inlen + 1; i < 119; ++i) { for (size_t i = inlen + 1; i < 119; ++i) {
padded[i] = 0; padded[i] = 0;
} }
padded[119] = bytes >> 61; padded[119] = (uint8_t) (bytes >> 61);
padded[120] = bytes >> 53; padded[120] = (uint8_t) (bytes >> 53);
padded[121] = bytes >> 45; padded[121] = (uint8_t) (bytes >> 45);
padded[122] = bytes >> 37; padded[122] = (uint8_t) (bytes >> 37);
padded[123] = bytes >> 29; padded[123] = (uint8_t) (bytes >> 29);
padded[124] = bytes >> 21; padded[124] = (uint8_t) (bytes >> 21);
padded[125] = bytes >> 13; padded[125] = (uint8_t) (bytes >> 13);
padded[126] = bytes >> 5; padded[126] = (uint8_t) (bytes >> 5);
padded[127] = bytes << 3; padded[127] = (uint8_t) (bytes << 3);
blocks(h, padded, 128); blocks(h, padded, 128);
} else { } else {
for (size_t i = inlen + 1; i < 247; ++i) { for (size_t i = inlen + 1; i < 247; ++i) {
padded[i] = 0; padded[i] = 0;
} }
padded[247] = bytes >> 61; padded[247] = (uint8_t) (bytes >> 61);
padded[248] = bytes >> 53; padded[248] = (uint8_t) (bytes >> 53);
padded[249] = bytes >> 45; padded[249] = (uint8_t) (bytes >> 45);
padded[250] = bytes >> 37; padded[250] = (uint8_t) (bytes >> 37);
padded[251] = bytes >> 29; padded[251] = (uint8_t) (bytes >> 29);
padded[252] = bytes >> 21; padded[252] = (uint8_t) (bytes >> 21);
padded[253] = bytes >> 13; padded[253] = (uint8_t) (bytes >> 13);
padded[254] = bytes >> 5; padded[254] = (uint8_t) (bytes >> 5);
padded[255] = bytes << 3; padded[255] = (uint8_t) (bytes << 3);
blocks(h, padded, 256); blocks(h, padded, 256);
} }
@ -350,29 +350,29 @@ int sha512(uint8_t *out, const uint8_t *in, size_t inlen) {
for (size_t i = inlen + 1; i < 119; ++i) { for (size_t i = inlen + 1; i < 119; ++i) {
padded[i] = 0; padded[i] = 0;
} }
padded[119] = bytes >> 61; padded[119] = (uint8_t) (bytes >> 61);
padded[120] = bytes >> 53; padded[120] = (uint8_t) (bytes >> 53);
padded[121] = bytes >> 45; padded[121] = (uint8_t) (bytes >> 45);
padded[122] = bytes >> 37; padded[122] = (uint8_t) (bytes >> 37);
padded[123] = bytes >> 29; padded[123] = (uint8_t) (bytes >> 29);
padded[124] = bytes >> 21; padded[124] = (uint8_t) (bytes >> 21);
padded[125] = bytes >> 13; padded[125] = (uint8_t) (bytes >> 13);
padded[126] = bytes >> 5; padded[126] = (uint8_t) (bytes >> 5);
padded[127] = bytes << 3; padded[127] = (uint8_t) (bytes << 3);
blocks(h, padded, 128); blocks(h, padded, 128);
} else { } else {
for (size_t i = inlen + 1; i < 247; ++i) { for (size_t i = inlen + 1; i < 247; ++i) {
padded[i] = 0; padded[i] = 0;
} }
padded[247] = bytes >> 61; padded[247] = (uint8_t) (bytes >> 61);
padded[248] = bytes >> 53; padded[248] = (uint8_t) (bytes >> 53);
padded[249] = bytes >> 45; padded[249] = (uint8_t) (bytes >> 45);
padded[250] = bytes >> 37; padded[250] = (uint8_t) (bytes >> 37);
padded[251] = bytes >> 29; padded[251] = (uint8_t) (bytes >> 29);
padded[252] = bytes >> 21; padded[252] = (uint8_t) (bytes >> 21);
padded[253] = bytes >> 13; padded[253] = (uint8_t) (bytes >> 13);
padded[254] = bytes >> 5; padded[254] = (uint8_t) (bytes >> 5);
padded[255] = bytes << 3; padded[255] = (uint8_t) (bytes << 3);
blocks(h, padded, 256); blocks(h, padded, 256);
} }