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/*-
* Copyright 2014 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package josecipher
import (
"bytes"
"crypto"
"testing"
)
// Taken from: https://tools.ietf.org/id/draft-ietf-jose-json-web-algorithms-38.txt
func TestVectorConcatKDF(t *testing.T) {
z := []byte{
158, 86, 217, 29, 129, 113, 53, 211, 114, 131, 66, 131, 191, 132,
38, 156, 251, 49, 110, 163, 218, 128, 106, 72, 246, 218, 167, 121,
140, 254, 144, 196}
algID := []byte{0, 0, 0, 7, 65, 49, 50, 56, 71, 67, 77}
ptyUInfo := []byte{0, 0, 0, 5, 65, 108, 105, 99, 101}
ptyVInfo := []byte{0, 0, 0, 3, 66, 111, 98}
supPubInfo := []byte{0, 0, 0, 128}
supPrivInfo := []byte{}
expected := []byte{
86, 170, 141, 234, 248, 35, 109, 32, 92, 34, 40, 205, 113, 167, 16, 26}
ckdf := NewConcatKDF(crypto.SHA256, z, algID, ptyUInfo, ptyVInfo, supPubInfo, supPrivInfo)
out0 := make([]byte, 9)
out1 := make([]byte, 7)
read0, err := ckdf.Read(out0)
if err != nil {
t.Error("error when reading from concat kdf reader", err)
return
}
read1, err := ckdf.Read(out1)
if err != nil {
t.Error("error when reading from concat kdf reader", err)
return
}
if read0+read1 != len(out0)+len(out1) {
t.Error("did not receive enough bytes from concat kdf reader")
return
}
out := []byte{}
out = append(out, out0...)
out = append(out, out1...)
if bytes.Compare(out, expected) != 0 {
t.Error("did not receive expected output from concat kdf reader")
return
}
}
func TestCache(t *testing.T) {
z := []byte{
158, 86, 217, 29, 129, 113, 53, 211, 114, 131, 66, 131, 191, 132,
38, 156, 251, 49, 110, 163, 218, 128, 106, 72, 246, 218, 167, 121,
140, 254, 144, 196}
algID := []byte{1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4}
ptyUInfo := []byte{1, 2, 3, 4}
ptyVInfo := []byte{4, 3, 2, 1}
supPubInfo := []byte{}
supPrivInfo := []byte{}
outputs := [][]byte{}
// Read the same amount of data in different chunk sizes
chunkSizes := []int{1, 2, 4, 8, 16, 32, 64, 128, 256, 512}
for _, c := range chunkSizes {
out := make([]byte, 1024)
reader := NewConcatKDF(crypto.SHA256, z, algID, ptyUInfo, ptyVInfo, supPubInfo, supPrivInfo)
for i := 0; i < 1024; i += c {
_, _ = reader.Read(out[i : i+c])
}
outputs = append(outputs, out)
}
for i := range outputs {
if bytes.Compare(outputs[i], outputs[(i+1)%len(outputs)]) != 0 {
t.Error("not all outputs from KDF matched")
}
}
}
func benchmarkKDF(b *testing.B, total int) {
z := []byte{
158, 86, 217, 29, 129, 113, 53, 211, 114, 131, 66, 131, 191, 132,
38, 156, 251, 49, 110, 163, 218, 128, 106, 72, 246, 218, 167, 121,
140, 254, 144, 196}
algID := []byte{1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4}
ptyUInfo := []byte{1, 2, 3, 4}
ptyVInfo := []byte{4, 3, 2, 1}
supPubInfo := []byte{}
supPrivInfo := []byte{}
out := make([]byte, total)
reader := NewConcatKDF(crypto.SHA256, z, algID, ptyUInfo, ptyVInfo, supPubInfo, supPrivInfo)
b.ResetTimer()
b.SetBytes(int64(total))
for i := 0; i < b.N; i++ {
_, _ = reader.Read(out)
}
}
func BenchmarkConcatKDF_1k(b *testing.B) {
benchmarkKDF(b, 1024)
}
func BenchmarkConcatKDF_64k(b *testing.B) {
benchmarkKDF(b, 65536)
}
func BenchmarkConcatKDF_1MB(b *testing.B) {
benchmarkKDF(b, 1048576)
}
func BenchmarkConcatKDF_64MB(b *testing.B) {
benchmarkKDF(b, 67108864)
}
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