/usr/share/gocode/src/golang.org/x/crypto/chacha20poly1305/internal/chacha20/chacha_test.go is in golang-golang-x-crypto-dev 1:0.0~git20170629.0.5ef0053-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | // Copyright 2016 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 chacha20
import (
"encoding/hex"
"testing"
)
func TestCore(t *testing.T) {
// This is just a smoke test that checks the example from
// https://tools.ietf.org/html/rfc7539#section-2.3.2. The
// chacha20poly1305 package contains much more extensive tests of this
// code.
var key [32]byte
for i := range key {
key[i] = byte(i)
}
var input [16]byte
input[0] = 1
input[7] = 9
input[11] = 0x4a
var out [64]byte
XORKeyStream(out[:], out[:], &input, &key)
const expected = "10f1e7e4d13b5915500fdd1fa32071c4c7d1f4c733c068030422aa9ac3d46c4ed2826446079faa0914c2d705d98b02a2b5129cd1de164eb9cbd083e8a2503c4e"
if result := hex.EncodeToString(out[:]); result != expected {
t.Errorf("wanted %x but got %x", expected, result)
}
}
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