diff options
Diffstat (limited to 'vendor/golang.org/x/crypto/internal/subtle')
3 files changed, 0 insertions, 117 deletions
diff --git a/vendor/golang.org/x/crypto/internal/subtle/aliasing.go b/vendor/golang.org/x/crypto/internal/subtle/aliasing.go deleted file mode 100644 index f38797b..0000000 --- a/vendor/golang.org/x/crypto/internal/subtle/aliasing.go +++ /dev/null @@ -1,32 +0,0 @@ -// Copyright 2018 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. - -// +build !appengine - -// Package subtle implements functions that are often useful in cryptographic -// code but require careful thought to use correctly. -package subtle // import "golang.org/x/crypto/internal/subtle" - -import "unsafe" - -// AnyOverlap reports whether x and y share memory at any (not necessarily -// corresponding) index. The memory beyond the slice length is ignored. -func AnyOverlap(x, y []byte) bool { - return len(x) > 0 && len(y) > 0 && - uintptr(unsafe.Pointer(&x[0])) <= uintptr(unsafe.Pointer(&y[len(y)-1])) && - uintptr(unsafe.Pointer(&y[0])) <= uintptr(unsafe.Pointer(&x[len(x)-1])) -} - -// InexactOverlap reports whether x and y share memory at any non-corresponding -// index. The memory beyond the slice length is ignored. Note that x and y can -// have different lengths and still not have any inexact overlap. -// -// InexactOverlap can be used to implement the requirements of the crypto/cipher -// AEAD, Block, BlockMode and Stream interfaces. -func InexactOverlap(x, y []byte) bool { - if len(x) == 0 || len(y) == 0 || &x[0] == &y[0] { - return false - } - return AnyOverlap(x, y) -} diff --git a/vendor/golang.org/x/crypto/internal/subtle/aliasing_appengine.go b/vendor/golang.org/x/crypto/internal/subtle/aliasing_appengine.go deleted file mode 100644 index 0cc4a8a..0000000 --- a/vendor/golang.org/x/crypto/internal/subtle/aliasing_appengine.go +++ /dev/null @@ -1,35 +0,0 @@ -// Copyright 2018 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. - -// +build appengine - -// Package subtle implements functions that are often useful in cryptographic -// code but require careful thought to use correctly. -package subtle // import "golang.org/x/crypto/internal/subtle" - -// This is the Google App Engine standard variant based on reflect -// because the unsafe package and cgo are disallowed. - -import "reflect" - -// AnyOverlap reports whether x and y share memory at any (not necessarily -// corresponding) index. The memory beyond the slice length is ignored. -func AnyOverlap(x, y []byte) bool { - return len(x) > 0 && len(y) > 0 && - reflect.ValueOf(&x[0]).Pointer() <= reflect.ValueOf(&y[len(y)-1]).Pointer() && - reflect.ValueOf(&y[0]).Pointer() <= reflect.ValueOf(&x[len(x)-1]).Pointer() -} - -// InexactOverlap reports whether x and y share memory at any non-corresponding -// index. The memory beyond the slice length is ignored. Note that x and y can -// have different lengths and still not have any inexact overlap. -// -// InexactOverlap can be used to implement the requirements of the crypto/cipher -// AEAD, Block, BlockMode and Stream interfaces. -func InexactOverlap(x, y []byte) bool { - if len(x) == 0 || len(y) == 0 || &x[0] == &y[0] { - return false - } - return AnyOverlap(x, y) -} diff --git a/vendor/golang.org/x/crypto/internal/subtle/aliasing_test.go b/vendor/golang.org/x/crypto/internal/subtle/aliasing_test.go deleted file mode 100644 index a5b62ff..0000000 --- a/vendor/golang.org/x/crypto/internal/subtle/aliasing_test.go +++ /dev/null @@ -1,50 +0,0 @@ -// Copyright 2018 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 subtle_test - -import ( - "testing" - - "golang.org/x/crypto/internal/subtle" -) - -var a, b [100]byte - -var aliasingTests = []struct { - x, y []byte - anyOverlap, inexactOverlap bool -}{ - {a[:], b[:], false, false}, - {a[:], b[:0], false, false}, - {a[:], b[:50], false, false}, - {a[40:50], a[50:60], false, false}, - {a[40:50], a[60:70], false, false}, - {a[:51], a[50:], true, true}, - {a[:], a[:], true, false}, - {a[:50], a[:60], true, false}, - {a[:], nil, false, false}, - {nil, nil, false, false}, - {a[:], a[:0], false, false}, - {a[:10], a[:10:20], true, false}, - {a[:10], a[5:10:20], true, true}, -} - -func testAliasing(t *testing.T, i int, x, y []byte, anyOverlap, inexactOverlap bool) { - any := subtle.AnyOverlap(x, y) - if any != anyOverlap { - t.Errorf("%d: wrong AnyOverlap result, expected %v, got %v", i, anyOverlap, any) - } - inexact := subtle.InexactOverlap(x, y) - if inexact != inexactOverlap { - t.Errorf("%d: wrong InexactOverlap result, expected %v, got %v", i, inexactOverlap, any) - } -} - -func TestAliasing(t *testing.T) { - for i, tt := range aliasingTests { - testAliasing(t, i, tt.x, tt.y, tt.anyOverlap, tt.inexactOverlap) - testAliasing(t, i, tt.y, tt.x, tt.anyOverlap, tt.inexactOverlap) - } -} |