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path: root/src/crypto/tls/cipher_suites.go
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Diffstat (limited to 'src/crypto/tls/cipher_suites.go')
-rw-r--r--src/crypto/tls/cipher_suites.go6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/crypto/tls/cipher_suites.go b/src/crypto/tls/cipher_suites.go
index beb0f1926d..2aeaf668e4 100644
--- a/src/crypto/tls/cipher_suites.go
+++ b/src/crypto/tls/cipher_suites.go
@@ -9,6 +9,7 @@ import (
"crypto/cipher"
"crypto/des"
"crypto/hmac"
+ "crypto/internal/boring"
"crypto/rc4"
"crypto/sha1"
"crypto/sha256"
@@ -298,6 +299,11 @@ func (c *cthWrapper) Write(p []byte) (int, error) { return c.h.Write(p) }
func (c *cthWrapper) Sum(b []byte) []byte { return c.h.ConstantTimeSum(b) }
func newConstantTimeHash(h func() hash.Hash) func() hash.Hash {
+ if boring.Enabled {
+ // The BoringCrypto SHA1 does not have a constant-time
+ // checksum function, so don't try to use it.
+ return h
+ }
return func() hash.Hash {
return &cthWrapper{h().(constantTimeHash)}
}