Roland Shoemaker
70a84ac30b
Required updating wycheproofModVer to pull the most recent test vectors. Tests against SHA1, SHA224, SHA256, SHA384, and SHA512 constructions but not the SHA3 variants. Change-Id: I5b66632ac0c7106bd9b405f6636922a6383d8b9e Reviewed-on: https://go-review.googlesource.com/c/crypto/+/234718 Run-TryBot: Katie Hockman <katie@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Katie Hockman <katie@golang.org>
106 lines
2.7 KiB
Go
106 lines
2.7 KiB
Go
// Copyright 2020 The Go Authors. All rights reserved.
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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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package wycheproof
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import (
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"crypto/hmac"
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"testing"
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)
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func TestHMAC(t *testing.T) {
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// MacTestVector
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type MacTestVector struct {
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// A brief description of the test case
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Comment string `json:"comment,omitempty"`
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// A list of flags
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Flags []string `json:"flags,omitempty"`
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// the key
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Key string `json:"key,omitempty"`
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// the plaintext
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Msg string `json:"msg,omitempty"`
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// Test result
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Result string `json:"result,omitempty"`
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// the authentication tag
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Tag string `json:"tag,omitempty"`
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// Identifier of the test case
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TcId int `json:"tcId,omitempty"`
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}
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// MacTestGroup
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type MacTestGroup struct {
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// the keySize in bits
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KeySize int `json:"keySize,omitempty"`
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// the expected size of the tag in bits
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TagSize int `json:"tagSize,omitempty"`
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Tests []*MacTestVector `json:"tests,omitempty"`
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Type interface{} `json:"type,omitempty"`
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}
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// Notes a description of the labels used in the test vectors
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type Notes struct {
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}
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// Root
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type Root struct {
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// the primitive tested in the test file
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Algorithm string `json:"algorithm,omitempty"`
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// the version of the test vectors.
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GeneratorVersion string `json:"generatorVersion,omitempty"`
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// additional documentation
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Header []string `json:"header,omitempty"`
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// a description of the labels used in the test vectors
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Notes *Notes `json:"notes,omitempty"`
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// the number of test vectors in this test
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NumberOfTests int `json:"numberOfTests,omitempty"`
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Schema interface{} `json:"schema,omitempty"`
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TestGroups []*MacTestGroup `json:"testGroups,omitempty"`
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}
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fileHashAlgs := map[string]string{
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"hmac_sha1_test.json": "SHA-1",
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"hmac_sha224_test.json": "SHA-224",
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"hmac_sha256_test.json": "SHA-256",
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"hmac_sha384_test.json": "SHA-384",
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"hmac_sha512_test.json": "SHA-512",
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}
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for f := range fileHashAlgs {
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var root Root
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readTestVector(t, f, &root)
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for _, tg := range root.TestGroups {
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h := parseHash(fileHashAlgs[f])
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// Skip test vectors where the tag length does not equal the
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// hash length, since crypto/hmac does not support generating
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// these truncated tags.
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if tg.TagSize/8 != h.Size() {
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continue
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}
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for _, tv := range tg.Tests {
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hm := hmac.New(h.New, decodeHex(tv.Key))
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hm.Write(decodeHex(tv.Msg))
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tag := hm.Sum(nil)
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got := hmac.Equal(decodeHex(tv.Tag), tag)
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if want := shouldPass(tv.Result, tv.Flags, nil); want != got {
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t.Errorf("%s, tcid: %d, type: %s, comment: %q, unexpected result", f, tv.TcId, tv.Result, tv.Comment)
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}
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}
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}
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}
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}
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