diff options
Diffstat (limited to 'libgo/go/internal/x/crypto/poly1305/sum_amd64.go')
-rw-r--r-- | libgo/go/internal/x/crypto/poly1305/sum_amd64.go | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/libgo/go/internal/x/crypto/poly1305/sum_amd64.go b/libgo/go/internal/x/crypto/poly1305/sum_amd64.go new file mode 100644 index 00000000000..4dd72fe799b --- /dev/null +++ b/libgo/go/internal/x/crypto/poly1305/sum_amd64.go @@ -0,0 +1,22 @@ +// Copyright 2012 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 amd64,!gccgo,!appengine + +package poly1305 + +// This function is implemented in sum_amd64.s +//go:noescape +func poly1305(out *[16]byte, m *byte, mlen uint64, key *[32]byte) + +// Sum generates an authenticator for m using a one-time key and puts the +// 16-byte result into out. Authenticating two different messages with the same +// key allows an attacker to forge messages at will. +func Sum(out *[16]byte, m []byte, key *[32]byte) { + var mPtr *byte + if len(m) > 0 { + mPtr = &m[0] + } + poly1305(out, mPtr, uint64(len(m)), key) +} |