Bumping k8s dependencies to 1.13

vendor/golang.org/x/crypto/sha3/shake.go

@@ -38,12 +38,22 @@ func (d *state) Clone() ShakeHash {
 // NewShake128 creates a new SHAKE128 variable-output-length ShakeHash.
 // Its generic security strength is 128 bits against all attacks if at
 // least 32 bytes of its output are used.
-func NewShake128() ShakeHash { return &state{rate: 168, dsbyte: 0x1f} }
+func NewShake128() ShakeHash {
+	if h := newShake128Asm(); h != nil {
+		return h
+	}
+	return &state{rate: 168, dsbyte: 0x1f}
+}
 
-// NewShake256 creates a new SHAKE128 variable-output-length ShakeHash.
+// NewShake256 creates a new SHAKE256 variable-output-length ShakeHash.
 // Its generic security strength is 256 bits against all attacks if
 // at least 64 bytes of its output are used.
-func NewShake256() ShakeHash { return &state{rate: 136, dsbyte: 0x1f} }
+func NewShake256() ShakeHash {
+	if h := newShake256Asm(); h != nil {
+		return h
+	}
+	return &state{rate: 136, dsbyte: 0x1f}
+}
 
 // ShakeSum128 writes an arbitrary-length digest of data into hash.
 func ShakeSum128(hash, data []byte) {