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authorJP Aumasson <jeanphilippe.aumasson@gmail.com>2016-12-17 14:14:22 +0100
committerJP Aumasson <jeanphilippe.aumasson@gmail.com>2016-12-17 14:14:22 +0100
commit93ca99dcfa6a32b1b617e9a5c3c044685254ce8e (patch)
treeb406909b4aa82b4840999fb6ffa755b75394c3a2 /siphash.c
parentchaskey constants (diff)
downloadsiphash-93ca99dcfa6a32b1b617e9a5c3c044685254ce8e.tar.gz
siphash-93ca99dcfa6a32b1b617e9a5c3c044685254ce8e.tar.xz
autogen vectors, tweaked hsiphash
Diffstat (limited to 'siphash.c')
-rw-r--r--siphash.c130
1 files changed, 67 insertions, 63 deletions
diff --git a/siphash.c b/siphash.c
index 7784009..d69f4b5 100644
--- a/siphash.c
+++ b/siphash.c
@@ -1,7 +1,7 @@
/*
SipHash reference C implementation
- Copyright (c) 2012-2014 Jean-Philippe Aumasson
+ Copyright (c) 2012-2016 Jean-Philippe Aumasson
<jeanphilippe.aumasson@gmail.com>
Copyright (c) 2012-2014 Daniel J. Bernstein <djb@cr.yp.to>
@@ -25,59 +25,60 @@
#define ROTL(x, b) (uint64_t)(((x) << (b)) | ((x) >> (64 - (b))))
-#define U32TO8_LE(p, v) \
- (p)[0] = (uint8_t)((v)); \
- (p)[1] = (uint8_t)((v) >> 8); \
- (p)[2] = (uint8_t)((v) >> 16); \
+#define U32TO8_LE(p, v) \
+ (p)[0] = (uint8_t)((v)); \
+ (p)[1] = (uint8_t)((v) >> 8); \
+ (p)[2] = (uint8_t)((v) >> 16); \
(p)[3] = (uint8_t)((v) >> 24);
-#define U64TO8_LE(p, v) \
- U32TO8_LE((p), (uint32_t)((v))); \
- U32TO8_LE((p) + 4, (uint32_t)((v) >> 32));
+#define U64TO8_LE(p, v) \
+ U32TO8_LE((p), (uint32_t)((v))); \
+ U32TO8_LE((p) + 4, (uint32_t)((v) >> 32));
-#define U8TO64_LE(p) \
- (((uint64_t)((p)[0])) | ((uint64_t)((p)[1]) << 8) | \
- ((uint64_t)((p)[2]) << 16) | ((uint64_t)((p)[3]) << 24) | \
- ((uint64_t)((p)[4]) << 32) | ((uint64_t)((p)[5]) << 40) | \
+#define U8TO64_LE(p) \
+ (((uint64_t)((p)[0])) | ((uint64_t)((p)[1]) << 8) | \
+ ((uint64_t)((p)[2]) << 16) | ((uint64_t)((p)[3]) << 24) | \
+ ((uint64_t)((p)[4]) << 32) | ((uint64_t)((p)[5]) << 40) | \
((uint64_t)((p)[6]) << 48) | ((uint64_t)((p)[7]) << 56))
-#define SIPROUND \
- do { \
- v0 += v1; \
- v1 = ROTL(v1, 13); \
- v1 ^= v0; \
- v0 = ROTL(v0, 32); \
- v2 += v3; \
- v3 = ROTL(v3, 16); \
- v3 ^= v2; \
- v0 += v3; \
- v3 = ROTL(v3, 21); \
- v3 ^= v0; \
- v2 += v1; \
- v1 = ROTL(v1, 17); \
- v1 ^= v2; \
- v2 = ROTL(v2, 32); \
+#define SIPROUND \
+ do { \
+ v0 += v1; \
+ v1 = ROTL(v1, 13); \
+ v1 ^= v0; \
+ v0 = ROTL(v0, 32); \
+ v2 += v3; \
+ v3 = ROTL(v3, 16); \
+ v3 ^= v2; \
+ v0 += v3; \
+ v3 = ROTL(v3, 21); \
+ v3 ^= v0; \
+ v2 += v1; \
+ v1 = ROTL(v1, 17); \
+ v1 ^= v2; \
+ v2 = ROTL(v2, 32); \
} while (0)
#ifdef DEBUG
#define TRACE \
- do { \
- printf("(%3d) v0 %08x %08x\n", (int)inlen, (uint32_t)(v0 >> 32), \
- (uint32_t)v0); \
- printf("(%3d) v1 %08x %08x\n", (int)inlen, (uint32_t)(v1 >> 32), \
- (uint32_t)v1); \
- printf("(%3d) v2 %08x %08x\n", (int)inlen, (uint32_t)(v2 >> 32), \
- (uint32_t)v2); \
- printf("(%3d) v3 %08x %08x\n", (int)inlen, (uint32_t)(v3 >> 32), \
- (uint32_t)v3); \
- } while (0)
+ do { \
+ printf("(%3d) v0 %08x %08x\n", (int)inlen, (uint32_t)(v0 >> 32), \
+ (uint32_t)v0); \
+ printf("(%3d) v1 %08x %08x\n", (int)inlen, (uint32_t)(v1 >> 32), \
+ (uint32_t)v1); \
+ printf("(%3d) v2 %08x %08x\n", (int)inlen, (uint32_t)(v2 >> 32), \
+ (uint32_t)v2); \
+ printf("(%3d) v3 %08x %08x\n", (int)inlen, (uint32_t)(v3 >> 32), \
+ (uint32_t)v3); \
+ } while (0)
#else
#define TRACE
#endif
-int siphash(const uint8_t *in, const size_t inlen, const uint8_t *k, uint8_t *out, const size_t outlen) {
-
- assert( (outlen == 8) || (outlen == 16));
+int siphash(const uint8_t *in, const size_t inlen, const uint8_t *k,
+ uint8_t *out, const size_t outlen) {
+
+ assert((outlen == 8) || (outlen == 16));
uint64_t v0 = 0x736f6d6570736575ULL;
uint64_t v1 = 0x646f72616e646f6dULL;
uint64_t v2 = 0x6c7967656e657261ULL;
@@ -94,7 +95,8 @@ int siphash(const uint8_t *in, const size_t inlen, const uint8_t *k, uint8_t *ou
v1 ^= k1;
v0 ^= k0;
- if (outlen == 16) v1 ^= 0xee;
+ if (outlen == 16)
+ v1 ^= 0xee;
for (; in != end; in += 8) {
m = U8TO64_LE(in);
@@ -108,23 +110,23 @@ int siphash(const uint8_t *in, const size_t inlen, const uint8_t *k, uint8_t *ou
}
switch (left) {
- case 7:
- b |= ((uint64_t)in[6]) << 48;
- case 6:
- b |= ((uint64_t)in[5]) << 40;
- case 5:
- b |= ((uint64_t)in[4]) << 32;
- case 4:
- b |= ((uint64_t)in[3]) << 24;
- case 3:
- b |= ((uint64_t)in[2]) << 16;
- case 2:
- b |= ((uint64_t)in[1]) << 8;
- case 1:
- b |= ((uint64_t)in[0]);
- break;
- case 0:
- break;
+ case 7:
+ b |= ((uint64_t)in[6]) << 48;
+ case 6:
+ b |= ((uint64_t)in[5]) << 40;
+ case 5:
+ b |= ((uint64_t)in[4]) << 32;
+ case 4:
+ b |= ((uint64_t)in[3]) << 24;
+ case 3:
+ b |= ((uint64_t)in[2]) << 16;
+ case 2:
+ b |= ((uint64_t)in[1]) << 8;
+ case 1:
+ b |= ((uint64_t)in[0]);
+ break;
+ case 0:
+ break;
}
v3 ^= b;
@@ -135,8 +137,10 @@ int siphash(const uint8_t *in, const size_t inlen, const uint8_t *k, uint8_t *ou
v0 ^= b;
- if (outlen == 16) v2 ^= 0xee;
- else v2 ^= 0xff;
+ if (outlen == 16)
+ v2 ^= 0xee;
+ else
+ v2 ^= 0xff;
TRACE;
for (i = 0; i < dROUNDS; ++i)
@@ -145,7 +149,8 @@ int siphash(const uint8_t *in, const size_t inlen, const uint8_t *k, uint8_t *ou
b = v0 ^ v1 ^ v2 ^ v3;
U64TO8_LE(out, b);
- if (outlen == 8) return 0;
+ if (outlen == 8)
+ return 0;
v1 ^= 0xdd;
@@ -158,4 +163,3 @@ int siphash(const uint8_t *in, const size_t inlen, const uint8_t *k, uint8_t *ou
return 0;
}
-