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authorMicah Anderson <micah@riseup.net>2014-08-11 13:49:21 -0400
committerMicah Anderson <micah@riseup.net>2014-08-11 13:49:21 -0400
commit2e59f9740a29439df7c7a56cf0ae83dec3081d31 (patch)
treed5e7c4e74c9a0f1ea999327d2e68b1dd27be00e0 /src/libsodium/crypto_shorthash/siphash24
initial import of debian version from mentors0.6.1
Diffstat (limited to 'src/libsodium/crypto_shorthash/siphash24')
-rw-r--r--src/libsodium/crypto_shorthash/siphash24/ref/api.h7
-rw-r--r--src/libsodium/crypto_shorthash/siphash24/ref/shorthash_siphash24.c91
-rw-r--r--src/libsodium/crypto_shorthash/siphash24/shorthash_siphash24_api.c11
3 files changed, 109 insertions, 0 deletions
diff --git a/src/libsodium/crypto_shorthash/siphash24/ref/api.h b/src/libsodium/crypto_shorthash/siphash24/ref/api.h
new file mode 100644
index 0000000..a837c8a
--- /dev/null
+++ b/src/libsodium/crypto_shorthash/siphash24/ref/api.h
@@ -0,0 +1,7 @@
+
+#include "crypto_shorthash_siphash24.h"
+
+#define crypto_shorthash crypto_shorthash_siphash24
+#define crypto_shorthash_BYTES crypto_shorthash_siphash24_BYTES
+#define crypto_shorthash_IMPLEMENTATION crypto_shorthash_siphash24_IMPLEMENTATION
+#define crypto_shorthash_VERSION crypto_shorthash_siphash24_VERSION
diff --git a/src/libsodium/crypto_shorthash/siphash24/ref/shorthash_siphash24.c b/src/libsodium/crypto_shorthash/siphash24/ref/shorthash_siphash24.c
new file mode 100644
index 0000000..3676382
--- /dev/null
+++ b/src/libsodium/crypto_shorthash/siphash24/ref/shorthash_siphash24.c
@@ -0,0 +1,91 @@
+#include "api.h"
+#include "crypto_uint64.h"
+#include "crypto_uint32.h"
+#include "crypto_uint8.h"
+
+typedef crypto_uint64 u64;
+typedef crypto_uint32 u32;
+typedef crypto_uint8 u8;
+
+#define ROTL(x,b) (u64)( ((x) << (b)) | ( (x) >> (64 - (b))) )
+
+#define U32TO8_LE(p, v) \
+ (p)[0] = (u8)((v) ); (p)[1] = (u8)((v) >> 8); \
+ (p)[2] = (u8)((v) >> 16); (p)[3] = (u8)((v) >> 24);
+
+#define U64TO8_LE(p, v) \
+ U32TO8_LE((p), (u32)((v) )); \
+ U32TO8_LE((p) + 4, (u32)((v) >> 32));
+
+#define U8TO64_LE(p) \
+ (((u64)((p)[0]) ) | \
+ ((u64)((p)[1]) << 8) | \
+ ((u64)((p)[2]) << 16) | \
+ ((u64)((p)[3]) << 24) | \
+ ((u64)((p)[4]) << 32) | \
+ ((u64)((p)[5]) << 40) | \
+ ((u64)((p)[6]) << 48) | \
+ ((u64)((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); \
+ } while(0)
+
+int crypto_shorthash(unsigned char *out,const unsigned char *in,unsigned long long inlen,const unsigned char *k)
+{
+ /* "somepseudorandomlygeneratedbytes" */
+ u64 v0 = 0x736f6d6570736575ULL;
+ u64 v1 = 0x646f72616e646f6dULL;
+ u64 v2 = 0x6c7967656e657261ULL;
+ u64 v3 = 0x7465646279746573ULL;
+ u64 b;
+ u64 k0 = U8TO64_LE( k );
+ u64 k1 = U8TO64_LE( k + 8 );
+ u64 m;
+ const u8 *end = in + inlen - ( inlen % sizeof( u64 ) );
+ const int left = inlen & 7;
+ b = ( ( u64 )inlen ) << 56;
+ v3 ^= k1;
+ v2 ^= k0;
+ v1 ^= k1;
+ v0 ^= k0;
+
+ for ( ; in != end; in += 8 )
+ {
+ m = U8TO64_LE( in );
+ v3 ^= m;
+ SIPROUND;
+ SIPROUND;
+ v0 ^= m;
+ }
+
+ switch( left )
+ {
+ case 7: b |= ( ( u64 )in[ 6] ) << 48;
+ case 6: b |= ( ( u64 )in[ 5] ) << 40;
+ case 5: b |= ( ( u64 )in[ 4] ) << 32;
+ case 4: b |= ( ( u64 )in[ 3] ) << 24;
+ case 3: b |= ( ( u64 )in[ 2] ) << 16;
+ case 2: b |= ( ( u64 )in[ 1] ) << 8;
+ case 1: b |= ( ( u64 )in[ 0] ); break;
+ case 0: break;
+ }
+
+ v3 ^= b;
+ SIPROUND;
+ SIPROUND;
+ v0 ^= b;
+ v2 ^= 0xff;
+ SIPROUND;
+ SIPROUND;
+ SIPROUND;
+ SIPROUND;
+ b = v0 ^ v1 ^ v2 ^ v3;
+ U64TO8_LE( out, b );
+ return 0;
+}
+
diff --git a/src/libsodium/crypto_shorthash/siphash24/shorthash_siphash24_api.c b/src/libsodium/crypto_shorthash/siphash24/shorthash_siphash24_api.c
new file mode 100644
index 0000000..e2cea77
--- /dev/null
+++ b/src/libsodium/crypto_shorthash/siphash24/shorthash_siphash24_api.c
@@ -0,0 +1,11 @@
+#include "crypto_shorthash_siphash24.h"
+
+size_t
+crypto_shorthash_siphash24_bytes(void) {
+ return crypto_shorthash_siphash24_BYTES;
+}
+
+size_t
+crypto_shorthash_siphash24_keybytes(void) {
+ return crypto_shorthash_siphash24_KEYBYTES;
+}