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-rw-r--r--crypto/sha3/xor_generic.go28
1 files changed, 28 insertions, 0 deletions
diff --git a/crypto/sha3/xor_generic.go b/crypto/sha3/xor_generic.go
new file mode 100644
index 000000000..fd35f02ef
--- /dev/null
+++ b/crypto/sha3/xor_generic.go
@@ -0,0 +1,28 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package sha3
+
+import "encoding/binary"
+
+// xorInGeneric xors the bytes in buf into the state; it
+// makes no non-portable assumptions about memory layout
+// or alignment.
+func xorInGeneric(d *state, buf []byte) {
+ n := len(buf) / 8
+
+ for i := 0; i < n; i++ {
+ a := binary.LittleEndian.Uint64(buf)
+ d.a[i] ^= a
+ buf = buf[8:]
+ }
+}
+
+// copyOutGeneric copies ulint64s to a byte buffer.
+func copyOutGeneric(d *state, b []byte) {
+ for i := 0; len(b) >= 8; i++ {
+ binary.LittleEndian.PutUint64(b, d.a[i])
+ b = b[8:]
+ }
+}