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Diffstat (limited to 'vendor/golang.org/x/crypto/poly1305/poly1305.go')
-rw-r--r-- | vendor/golang.org/x/crypto/poly1305/poly1305.go | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/vendor/golang.org/x/crypto/poly1305/poly1305.go b/vendor/golang.org/x/crypto/poly1305/poly1305.go deleted file mode 100644 index f562fa571..000000000 --- a/vendor/golang.org/x/crypto/poly1305/poly1305.go +++ /dev/null @@ -1,33 +0,0 @@ -// 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. - -/* -Package poly1305 implements Poly1305 one-time message authentication code as -specified in https://cr.yp.to/mac/poly1305-20050329.pdf. - -Poly1305 is a fast, one-time authentication function. It is infeasible for an -attacker to generate an authenticator for a message without the key. However, a -key must only be used for a single message. Authenticating two different -messages with the same key allows an attacker to forge authenticators for other -messages with the same key. - -Poly1305 was originally coupled with AES in order to make Poly1305-AES. AES was -used with a fixed key in order to generate one-time keys from an nonce. -However, in this package AES isn't used and the one-time key is specified -directly. -*/ -package poly1305 // import "golang.org/x/crypto/poly1305" - -import "crypto/subtle" - -// TagSize is the size, in bytes, of a poly1305 authenticator. -const TagSize = 16 - -// Verify returns true if mac is a valid authenticator for m with the given -// key. -func Verify(mac *[16]byte, m []byte, key *[32]byte) bool { - var tmp [16]byte - Sum(&tmp, m, key) - return subtle.ConstantTimeCompare(tmp[:], mac[:]) == 1 -} |