byte swap the raw hash secrets (more bpo-32260) (#4773)

benjaminp · web-flow · commit 60ed13083049 · 2017-12-09T13:11:39.000-08:00
diff --git a/Python/pyhash.c b/Python/pyhash.c
@@ -415,7 +415,7 @@ siphash24(uint64_t k0, uint64_t k1, const void *src, Py_ssize_t src_sz) {
 static Py_hash_t
 pysiphash(const void *src, Py_ssize_t src_sz) {
     return (Py_hash_t)siphash24(
-        _Py_HashSecret.siphash.k0, _Py_HashSecret.siphash.k1,
+        _le64toh(_Py_HashSecret.siphash.k0), _le64toh(_Py_HashSecret.siphash.k1),
         src, src_sz);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -415,7 +415,7 @@ siphash24(uint64_t k0, uint64_t k1, const void *src, Py_ssize_t src_sz) {`
`415`	`415`	`static Py_hash_t`
`416`	`416`	`pysiphash(const void *src, Py_ssize_t src_sz) {`
`417`	`417`	`return (Py_hash_t)siphash24(`
`418`		`- _Py_HashSecret.siphash.k0, _Py_HashSecret.siphash.k1,`
	`418`	`+ _le64toh(_Py_HashSecret.siphash.k0), _le64toh(_Py_HashSecret.siphash.k1),`
`419`	`419`	`src, src_sz);`
`420`	`420`	`}`
`421`	`421`