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136 lines
3.9 KiB
136 lines
3.9 KiB
use pbkdf2 from OpenSSL if FIPS mode is enabled
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This patch modifies the x/crypto/pbkdf2 function to use OpenSSL
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if FIPS mode is enabled.
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DEFINEFUNC is from /usr/lib/golang/src/vendor/github.com/golang-fips/openssl-fips/openssl/goopenssl.h
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diff --git a/vendor/golang.org/x/crypto/internal/boring/boring.go b/vendor/golang.org/x/crypto/internal/boring/boring.go
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new file mode 100644
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index 0000000000..5a06918832
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--- /dev/null
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+++ b/vendor/golang.org/x/crypto/internal/boring/boring.go
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@@ -0,0 +1,74 @@
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+// Copyright 2017 The Go Authors. All rights reserved.
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+// Copyright 2021 Red Hat.
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+// Use of this source code is governed by a BSD-style
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+// license that can be found in the LICENSE file.
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+
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+// +build linux
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+// +build !android
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+// +build !no_openssl
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+// +build !cmd_go_bootstrap
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+// +build !msan
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+
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+package boring
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+
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+// #include "/usr/lib/golang/src/vendor/github.com/golang-fips/openssl/v2/goopenssl.h"
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+// #cgo LDFLAGS: -ldl
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+import "C"
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+import (
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+ "bytes"
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+ "crypto/sha1"
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+ "crypto/sha256"
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+ "hash"
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+ "unsafe"
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+)
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+
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+var (
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+ emptySha1 = sha1.Sum([]byte{})
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+ emptySha256 = sha256.Sum256([]byte{})
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+)
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+
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+func hashToMD(h hash.Hash) C.GO_EVP_MD_PTR {
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+ emptyHash := h.Sum([]byte{})
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+
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+ switch {
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+ case bytes.Equal(emptyHash, emptySha1[:]):
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+ return C.go_openssl_EVP_sha1()
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+ case bytes.Equal(emptyHash, emptySha256[:]):
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+ return C.go_openssl_EVP_sha256()
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+ }
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+ return nil
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+}
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+
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+// charptr returns the address of the underlying array in b,
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+// being careful not to panic when b has zero length.
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+func charptr(b []byte) *C.char {
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+ if len(b) == 0 {
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+ return nil
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+ }
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+ return (*C.char)(unsafe.Pointer(&b[0]))
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+}
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+
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+// ucharptr returns the address of the underlying array in b,
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+// being careful not to panic when b has zero length.
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+func ucharptr(b []byte) *C.uchar {
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+ if len(b) == 0 {
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+ return nil
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+ }
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+ return (*C.uchar)(unsafe.Pointer(&b[0]))
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+}
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+
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+func Pbkdf2Key(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte {
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+ // println("[debug] using pbkdf2 from OpenSSL")
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+ ch := h()
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+ md := hashToMD(ch)
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+ if md == nil {
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+ return nil
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+ }
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+
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+ out := make([]byte, keyLen)
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+ ok := C.go_openssl_PKCS5_PBKDF2_HMAC(charptr(password), C.int(len(password)), ucharptr(salt), C.int(len(salt)), C.int(iter), md, C.int(keyLen), ucharptr(out))
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+ if ok != 1 {
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+ panic("boringcrypto: PKCS5_PBKDF2_HMAC failed")
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+ }
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+ return out
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+}
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diff --git a/vendor/golang.org/x/crypto/internal/boring/notboring.go b/vendor/golang.org/x/crypto/internal/boring/notboring.go
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new file mode 100644
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index 0000000000..e244fb5663
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--- /dev/null
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+++ b/vendor/golang.org/x/crypto/internal/boring/notboring.go
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@@ -0,0 +1,16 @@
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+// Copyright 2017 The Go Authors. All rights reserved.
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+// Copyright 2021 Red Hat.
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+// Use of this source code is governed by a BSD-style
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+// license that can be found in the LICENSE file.
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+
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+// +build !linux !cgo android cmd_go_bootstrap msan no_openssl
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+
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+package boring
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+
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+import (
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+ "hash"
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+)
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+
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+func Pbkdf2Key(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte {
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+ panic("boringcrypto: not available")
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+}
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diff --git a/vendor/golang.org/x/crypto/pbkdf2/pbkdf2.go b/vendor/golang.org/x/crypto/pbkdf2/pbkdf2.go
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index 593f653008..799a611f94 100644
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--- a/vendor/golang.org/x/crypto/pbkdf2/pbkdf2.go
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+++ b/vendor/golang.org/x/crypto/pbkdf2/pbkdf2.go
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@@ -19,8 +19,11 @@ pbkdf2.Key.
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package pbkdf2 // import "golang.org/x/crypto/pbkdf2"
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import (
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+ "crypto/boring"
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"crypto/hmac"
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"hash"
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+
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+ xboring "golang.org/x/crypto/internal/boring"
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)
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// Key derives a key from the password, salt and iteration count, returning a
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@@ -40,6 +43,10 @@ import (
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// Using a higher iteration count will increase the cost of an exhaustive
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// search but will also make derivation proportionally slower.
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func Key(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte {
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+ if boring.Enabled() {
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+ return xboring.Pbkdf2Key(password, salt, iter, keyLen, h)
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+ }
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+
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prf := hmac.New(h, password)
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hashLen := prf.Size()
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numBlocks := (keyLen + hashLen - 1) / hashLen
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