1 files changed, 26 insertions, 0 deletions
diff --git a/src/crypto/sha1/sha1block_arm64.go b/src/crypto/sha1/sha1block_arm64.go
new file mode 100644
index 0000000..08d3df0
--- /dev/null
+++ b/src/crypto/sha1/sha1block_arm64.go
@@ -0,0 +1,26 @@
+// Copyright 2017 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 sha1
+
+import "internal/cpu"
+
+var k = []uint32{
+	0x5A827999,
+	0x6ED9EBA1,
+	0x8F1BBCDC,
+	0xCA62C1D6,
+}
+
+//go:noescape
+func sha1block(h []uint32, p []byte, k []uint32)
+
+func block(dig *digest, p []byte) {
+	if !cpu.ARM64.HasSHA1 {
+		blockGeneric(dig, p)
+	} else {
+		h := dig.h[:]
+		sha1block(h, p, k)
+	}
+}