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-rw-r--r--src/crypto/boring/boring.go19
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diff --git a/src/crypto/boring/boring.go b/src/crypto/boring/boring.go
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+// Copyright 2020 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 boring exposes functions that are only available when building with
+// Go+BoringCrypto. This package is available on all targets as long as the
+// Go+BoringCrypto toolchain is used. Use the Enabled function to determine
+// whether the BoringCrypto core is actually in use.
+//
+// Any time the Go+BoringCrypto toolchain is used, the "boringcrypto" build tag
+// is satisfied, so that applications can tag files that use this package.
+package boring
+
+import "crypto/internal/boring"
+
+// Enabled reports whether BoringCrypto handles supported crypto operations.
+func Enabled() bool {
+ return boring.Enabled
+}