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-rw-r--r--pkg/merkletree/merkletree_test.go1117
1 files changed, 777 insertions, 340 deletions
diff --git a/pkg/merkletree/merkletree_test.go b/pkg/merkletree/merkletree_test.go
index 405204d94..279c0103e 100644
--- a/pkg/merkletree/merkletree_test.go
+++ b/pkg/merkletree/merkletree_test.go
@@ -16,6 +16,7 @@ package merkletree
import (
"bytes"
+ "errors"
"fmt"
"io"
"math/rand"
@@ -28,6 +29,7 @@ import (
func TestLayout(t *testing.T) {
testCases := []struct {
+ name string
dataSize int64
hashAlgorithms int
dataAndTreeInSameFile bool
@@ -35,6 +37,7 @@ func TestLayout(t *testing.T) {
expectedLevelOffset []int64
}{
{
+ name: "SmallSizeSHA256SeparateFile",
dataSize: 100,
hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
dataAndTreeInSameFile: false,
@@ -42,6 +45,7 @@ func TestLayout(t *testing.T) {
expectedLevelOffset: []int64{0},
},
{
+ name: "SmallSizeSHA512SeparateFile",
dataSize: 100,
hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
dataAndTreeInSameFile: false,
@@ -49,6 +53,7 @@ func TestLayout(t *testing.T) {
expectedLevelOffset: []int64{0},
},
{
+ name: "SmallSizeSHA256SameFile",
dataSize: 100,
hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
dataAndTreeInSameFile: true,
@@ -56,6 +61,7 @@ func TestLayout(t *testing.T) {
expectedLevelOffset: []int64{usermem.PageSize},
},
{
+ name: "SmallSizeSHA512SameFile",
dataSize: 100,
hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
dataAndTreeInSameFile: true,
@@ -63,6 +69,7 @@ func TestLayout(t *testing.T) {
expectedLevelOffset: []int64{usermem.PageSize},
},
{
+ name: "MiddleSizeSHA256SeparateFile",
dataSize: 1000000,
hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
dataAndTreeInSameFile: false,
@@ -70,6 +77,7 @@ func TestLayout(t *testing.T) {
expectedLevelOffset: []int64{0, 2 * usermem.PageSize, 3 * usermem.PageSize},
},
{
+ name: "MiddleSizeSHA512SeparateFile",
dataSize: 1000000,
hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
dataAndTreeInSameFile: false,
@@ -77,6 +85,7 @@ func TestLayout(t *testing.T) {
expectedLevelOffset: []int64{0, 4 * usermem.PageSize, 5 * usermem.PageSize},
},
{
+ name: "MiddleSizeSHA256SameFile",
dataSize: 1000000,
hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
dataAndTreeInSameFile: true,
@@ -84,6 +93,7 @@ func TestLayout(t *testing.T) {
expectedLevelOffset: []int64{245 * usermem.PageSize, 247 * usermem.PageSize, 248 * usermem.PageSize},
},
{
+ name: "MiddleSizeSHA512SameFile",
dataSize: 1000000,
hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
dataAndTreeInSameFile: true,
@@ -91,6 +101,7 @@ func TestLayout(t *testing.T) {
expectedLevelOffset: []int64{245 * usermem.PageSize, 249 * usermem.PageSize, 250 * usermem.PageSize},
},
{
+ name: "LargeSizeSHA256SeparateFile",
dataSize: 4096 * int64(usermem.PageSize),
hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
dataAndTreeInSameFile: false,
@@ -98,6 +109,7 @@ func TestLayout(t *testing.T) {
expectedLevelOffset: []int64{0, 32 * usermem.PageSize, 33 * usermem.PageSize},
},
{
+ name: "LargeSizeSHA512SeparateFile",
dataSize: 4096 * int64(usermem.PageSize),
hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
dataAndTreeInSameFile: false,
@@ -105,6 +117,7 @@ func TestLayout(t *testing.T) {
expectedLevelOffset: []int64{0, 64 * usermem.PageSize, 65 * usermem.PageSize},
},
{
+ name: "LargeSizeSHA256SameFile",
dataSize: 4096 * int64(usermem.PageSize),
hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
dataAndTreeInSameFile: true,
@@ -112,6 +125,7 @@ func TestLayout(t *testing.T) {
expectedLevelOffset: []int64{4096 * usermem.PageSize, 4128 * usermem.PageSize, 4129 * usermem.PageSize},
},
{
+ name: "LargeSizeSHA512SameFile",
dataSize: 4096 * int64(usermem.PageSize),
hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
dataAndTreeInSameFile: true,
@@ -121,7 +135,7 @@ func TestLayout(t *testing.T) {
}
for _, tc := range testCases {
- t.Run(fmt.Sprintf("%d", tc.dataSize), func(t *testing.T) {
+ t.Run(tc.name, func(t *testing.T) {
l, err := InitLayout(tc.dataSize, tc.hashAlgorithms, tc.dataAndTreeInSameFile)
if err != nil {
t.Fatalf("Failed to InitLayout: %v", err)
@@ -178,418 +192,841 @@ func TestGenerate(t *testing.T) {
// The input data has size dataSize. It starts with the data in startWith,
// and all other bytes are zeroes.
testCases := []struct {
- data []byte
- hashAlgorithms int
- expectedHash []byte
+ name string
+ data []byte
+ hashAlgorithms int
+ dataAndTreeInSameFile bool
+ expectedHash []byte
}{
{
- data: bytes.Repeat([]byte{0}, usermem.PageSize),
- hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
- expectedHash: []byte{39, 30, 12, 152, 185, 58, 32, 84, 218, 79, 74, 113, 104, 219, 230, 234, 25, 126, 147, 36, 212, 44, 76, 74, 25, 93, 228, 41, 243, 143, 59, 147},
+ name: "OnePageZeroesSHA256SeparateFile",
+ data: bytes.Repeat([]byte{0}, usermem.PageSize),
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ expectedHash: []byte{39, 30, 12, 152, 185, 58, 32, 84, 218, 79, 74, 113, 104, 219, 230, 234, 25, 126, 147, 36, 212, 44, 76, 74, 25, 93, 228, 41, 243, 143, 59, 147},
+ },
+ {
+ name: "OnePageZeroesSHA256SameFile",
+ data: bytes.Repeat([]byte{0}, usermem.PageSize),
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ expectedHash: []byte{39, 30, 12, 152, 185, 58, 32, 84, 218, 79, 74, 113, 104, 219, 230, 234, 25, 126, 147, 36, 212, 44, 76, 74, 25, 93, 228, 41, 243, 143, 59, 147},
+ },
+ {
+ name: "OnePageZeroesSHA512SeparateFile",
+ data: bytes.Repeat([]byte{0}, usermem.PageSize),
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ expectedHash: []byte{184, 76, 172, 204, 17, 136, 127, 75, 224, 42, 251, 181, 98, 149, 1, 44, 58, 148, 20, 187, 30, 174, 73, 87, 166, 9, 109, 169, 42, 96, 87, 202, 59, 82, 174, 80, 51, 95, 101, 100, 6, 246, 56, 120, 27, 166, 29, 59, 67, 115, 227, 121, 241, 177, 63, 238, 82, 157, 43, 107, 174, 180, 44, 84},
+ },
+ {
+ name: "OnePageZeroesSHA512SameFile",
+ data: bytes.Repeat([]byte{0}, usermem.PageSize),
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ expectedHash: []byte{184, 76, 172, 204, 17, 136, 127, 75, 224, 42, 251, 181, 98, 149, 1, 44, 58, 148, 20, 187, 30, 174, 73, 87, 166, 9, 109, 169, 42, 96, 87, 202, 59, 82, 174, 80, 51, 95, 101, 100, 6, 246, 56, 120, 27, 166, 29, 59, 67, 115, 227, 121, 241, 177, 63, 238, 82, 157, 43, 107, 174, 180, 44, 84},
+ },
+ {
+ name: "MultiplePageZeroesSHA256SeparateFile",
+ data: bytes.Repeat([]byte{0}, 128*usermem.PageSize+1),
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ expectedHash: []byte{213, 221, 252, 9, 241, 250, 186, 1, 242, 132, 83, 77, 180, 207, 119, 48, 206, 113, 37, 253, 252, 159, 71, 70, 3, 53, 42, 244, 230, 244, 173, 143},
+ },
+ {
+ name: "MultiplePageZeroesSHA256SameFile",
+ data: bytes.Repeat([]byte{0}, 128*usermem.PageSize+1),
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ expectedHash: []byte{213, 221, 252, 9, 241, 250, 186, 1, 242, 132, 83, 77, 180, 207, 119, 48, 206, 113, 37, 253, 252, 159, 71, 70, 3, 53, 42, 244, 230, 244, 173, 143},
+ },
+ {
+ name: "MultiplePageZeroesSHA512SeparateFile",
+ data: bytes.Repeat([]byte{0}, 128*usermem.PageSize+1),
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ expectedHash: []byte{40, 231, 187, 28, 3, 171, 168, 36, 177, 244, 118, 131, 218, 226, 106, 55, 245, 157, 244, 147, 144, 57, 41, 182, 65, 6, 13, 49, 38, 66, 237, 117, 124, 110, 250, 246, 248, 132, 201, 156, 195, 201, 142, 179, 122, 128, 195, 194, 187, 240, 129, 171, 168, 182, 101, 58, 194, 155, 99, 147, 49, 130, 161, 178},
+ },
+ {
+ name: "MultiplePageZeroesSHA512SameFile",
+ data: bytes.Repeat([]byte{0}, 128*usermem.PageSize+1),
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ expectedHash: []byte{40, 231, 187, 28, 3, 171, 168, 36, 177, 244, 118, 131, 218, 226, 106, 55, 245, 157, 244, 147, 144, 57, 41, 182, 65, 6, 13, 49, 38, 66, 237, 117, 124, 110, 250, 246, 248, 132, 201, 156, 195, 201, 142, 179, 122, 128, 195, 194, 187, 240, 129, 171, 168, 182, 101, 58, 194, 155, 99, 147, 49, 130, 161, 178},
},
{
- data: bytes.Repeat([]byte{0}, usermem.PageSize),
- hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
- expectedHash: []byte{184, 76, 172, 204, 17, 136, 127, 75, 224, 42, 251, 181, 98, 149, 1, 44, 58, 148, 20, 187, 30, 174, 73, 87, 166, 9, 109, 169, 42, 96, 87, 202, 59, 82, 174, 80, 51, 95, 101, 100, 6, 246, 56, 120, 27, 166, 29, 59, 67, 115, 227, 121, 241, 177, 63, 238, 82, 157, 43, 107, 174, 180, 44, 84},
+ name: "SingleASHA256SeparateFile",
+ data: []byte{'a'},
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ expectedHash: []byte{182, 25, 170, 240, 16, 153, 234, 4, 101, 238, 197, 154, 182, 168, 171, 96, 177, 33, 171, 117, 73, 78, 124, 239, 82, 255, 215, 121, 156, 95, 121, 171},
},
{
- data: bytes.Repeat([]byte{0}, 128*usermem.PageSize+1),
- hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
- expectedHash: []byte{213, 221, 252, 9, 241, 250, 186, 1, 242, 132, 83, 77, 180, 207, 119, 48, 206, 113, 37, 253, 252, 159, 71, 70, 3, 53, 42, 244, 230, 244, 173, 143},
+ name: "SingleASHA256SameFile",
+ data: []byte{'a'},
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ expectedHash: []byte{182, 25, 170, 240, 16, 153, 234, 4, 101, 238, 197, 154, 182, 168, 171, 96, 177, 33, 171, 117, 73, 78, 124, 239, 82, 255, 215, 121, 156, 95, 121, 171},
},
{
- data: bytes.Repeat([]byte{0}, 128*usermem.PageSize+1),
- hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
- expectedHash: []byte{40, 231, 187, 28, 3, 171, 168, 36, 177, 244, 118, 131, 218, 226, 106, 55, 245, 157, 244, 147, 144, 57, 41, 182, 65, 6, 13, 49, 38, 66, 237, 117, 124, 110, 250, 246, 248, 132, 201, 156, 195, 201, 142, 179, 122, 128, 195, 194, 187, 240, 129, 171, 168, 182, 101, 58, 194, 155, 99, 147, 49, 130, 161, 178},
+ name: "SingleASHA512SeparateFile",
+ data: []byte{'a'},
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ expectedHash: []byte{121, 28, 140, 244, 32, 222, 61, 255, 184, 65, 117, 84, 132, 197, 122, 214, 95, 249, 164, 77, 211, 192, 217, 59, 109, 255, 249, 253, 27, 142, 110, 29, 93, 153, 92, 211, 178, 198, 136, 34, 61, 157, 141, 94, 145, 191, 201, 134, 141, 138, 51, 26, 33, 187, 17, 196, 113, 234, 125, 219, 4, 41, 57, 120},
},
{
- data: []byte{'a'},
- hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
- expectedHash: []byte{182, 25, 170, 240, 16, 153, 234, 4, 101, 238, 197, 154, 182, 168, 171, 96, 177, 33, 171, 117, 73, 78, 124, 239, 82, 255, 215, 121, 156, 95, 121, 171},
+ name: "SingleASHA512SameFile",
+ data: []byte{'a'},
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ expectedHash: []byte{121, 28, 140, 244, 32, 222, 61, 255, 184, 65, 117, 84, 132, 197, 122, 214, 95, 249, 164, 77, 211, 192, 217, 59, 109, 255, 249, 253, 27, 142, 110, 29, 93, 153, 92, 211, 178, 198, 136, 34, 61, 157, 141, 94, 145, 191, 201, 134, 141, 138, 51, 26, 33, 187, 17, 196, 113, 234, 125, 219, 4, 41, 57, 120},
},
{
- data: []byte{'a'},
- hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
- expectedHash: []byte{121, 28, 140, 244, 32, 222, 61, 255, 184, 65, 117, 84, 132, 197, 122, 214, 95, 249, 164, 77, 211, 192, 217, 59, 109, 255, 249, 253, 27, 142, 110, 29, 93, 153, 92, 211, 178, 198, 136, 34, 61, 157, 141, 94, 145, 191, 201, 134, 141, 138, 51, 26, 33, 187, 17, 196, 113, 234, 125, 219, 4, 41, 57, 120},
+ name: "OnePageASHA256SeparateFile",
+ data: bytes.Repeat([]byte{'a'}, usermem.PageSize),
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ expectedHash: []byte{17, 40, 99, 150, 206, 124, 196, 184, 41, 40, 50, 91, 113, 47, 8, 204, 2, 102, 202, 86, 157, 92, 218, 53, 151, 250, 234, 247, 191, 121, 113, 246},
},
{
- data: bytes.Repeat([]byte{'a'}, usermem.PageSize),
- hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
- expectedHash: []byte{17, 40, 99, 150, 206, 124, 196, 184, 41, 40, 50, 91, 113, 47, 8, 204, 2, 102, 202, 86, 157, 92, 218, 53, 151, 250, 234, 247, 191, 121, 113, 246},
+ name: "OnePageASHA256SameFile",
+ data: bytes.Repeat([]byte{'a'}, usermem.PageSize),
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ expectedHash: []byte{17, 40, 99, 150, 206, 124, 196, 184, 41, 40, 50, 91, 113, 47, 8, 204, 2, 102, 202, 86, 157, 92, 218, 53, 151, 250, 234, 247, 191, 121, 113, 246},
},
{
- data: bytes.Repeat([]byte{'a'}, usermem.PageSize),
- hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
- expectedHash: []byte{100, 22, 249, 78, 47, 163, 220, 231, 228, 165, 226, 192, 221, 77, 106, 69, 115, 104, 208, 155, 124, 206, 225, 233, 98, 249, 232, 225, 114, 119, 110, 216, 117, 106, 85, 7, 200, 206, 139, 81, 116, 37, 215, 158, 89, 110, 74, 86, 66, 95, 117, 237, 70, 56, 62, 175, 48, 147, 162, 122, 253, 57, 123, 84},
+ name: "OnePageASHA512SeparateFile",
+ data: bytes.Repeat([]byte{'a'}, usermem.PageSize),
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ expectedHash: []byte{100, 22, 249, 78, 47, 163, 220, 231, 228, 165, 226, 192, 221, 77, 106, 69, 115, 104, 208, 155, 124, 206, 225, 233, 98, 249, 232, 225, 114, 119, 110, 216, 117, 106, 85, 7, 200, 206, 139, 81, 116, 37, 215, 158, 89, 110, 74, 86, 66, 95, 117, 237, 70, 56, 62, 175, 48, 147, 162, 122, 253, 57, 123, 84},
+ },
+ {
+ name: "OnePageASHA512SameFile",
+ data: bytes.Repeat([]byte{'a'}, usermem.PageSize),
+ hashAlgorithms: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ expectedHash: []byte{100, 22, 249, 78, 47, 163, 220, 231, 228, 165, 226, 192, 221, 77, 106, 69, 115, 104, 208, 155, 124, 206, 225, 233, 98, 249, 232, 225, 114, 119, 110, 216, 117, 106, 85, 7, 200, 206, 139, 81, 116, 37, 215, 158, 89, 110, 74, 86, 66, 95, 117, 237, 70, 56, 62, 175, 48, 147, 162, 122, 253, 57, 123, 84},
},
}
for _, tc := range testCases {
- t.Run(fmt.Sprintf("%d:%v", len(tc.data), tc.data[0]), func(t *testing.T) {
- for _, dataAndTreeInSameFile := range []bool{false, true} {
- var tree bytesReadWriter
- params := GenerateParams{
- Size: int64(len(tc.data)),
- Name: defaultName,
- Mode: defaultMode,
- UID: defaultUID,
- GID: defaultGID,
- HashAlgorithms: tc.hashAlgorithms,
- TreeReader: &tree,
- TreeWriter: &tree,
- DataAndTreeInSameFile: dataAndTreeInSameFile,
- }
- if dataAndTreeInSameFile {
- tree.Write(tc.data)
- params.File = &tree
- } else {
- params.File = &bytesReadWriter{
- bytes: tc.data,
- }
- }
- hash, err := Generate(&params)
- if err != nil {
- t.Fatalf("Got err: %v, want nil", err)
+ t.Run(fmt.Sprintf(tc.name), func(t *testing.T) {
+ var tree bytesReadWriter
+ params := GenerateParams{
+ Size: int64(len(tc.data)),
+ Name: defaultName,
+ Mode: defaultMode,
+ UID: defaultUID,
+ GID: defaultGID,
+ HashAlgorithms: tc.hashAlgorithms,
+ TreeReader: &tree,
+ TreeWriter: &tree,
+ DataAndTreeInSameFile: tc.dataAndTreeInSameFile,
+ }
+ if tc.dataAndTreeInSameFile {
+ tree.Write(tc.data)
+ params.File = &tree
+ } else {
+ params.File = &bytesReadWriter{
+ bytes: tc.data,
}
+ }
+ hash, err := Generate(&params)
+ if err != nil {
+ t.Fatalf("Got err: %v, want nil", err)
+ }
+ if !bytes.Equal(hash, tc.expectedHash) {
+ t.Errorf("Got hash: %v, want %v", hash, tc.expectedHash)
+ }
+ })
+ }
+}
- if !bytes.Equal(hash, tc.expectedHash) {
- t.Errorf("Got hash: %v, want %v", hash, tc.expectedHash)
- }
+// prepareVerify generates test data and corresponding Merkle tree, and returns
+// the prepared VerifyParams.
+// The test data has size dataSize. The data is hashed with hashAlgorithms. The
+// portion to be verified ranges from verifyStart with verifySize.
+func prepareVerify(t *testing.T, dataSize int64, hashAlgorithm int, dataAndTreeInSameFile bool, verifyStart int64, verifySize int64, out io.Writer) ([]byte, VerifyParams) {
+ t.Helper()
+ data := make([]byte, dataSize)
+ // Generate random bytes in data.
+ rand.Read(data)
+
+ var tree bytesReadWriter
+ genParams := GenerateParams{
+ Size: int64(len(data)),
+ Name: defaultName,
+ Mode: defaultMode,
+ UID: defaultUID,
+ GID: defaultGID,
+ HashAlgorithms: hashAlgorithm,
+ TreeReader: &tree,
+ TreeWriter: &tree,
+ DataAndTreeInSameFile: dataAndTreeInSameFile,
+ }
+ if dataAndTreeInSameFile {
+ tree.Write(data)
+ genParams.File = &tree
+ } else {
+ genParams.File = &bytesReadWriter{
+ bytes: data,
+ }
+ }
+ hash, err := Generate(&genParams)
+ if err != nil {
+ t.Fatalf("could not generate Merkle tree:%v", err)
+ }
+
+ return data, VerifyParams{
+ Out: out,
+ File: bytes.NewReader(data),
+ Tree: &tree,
+ Size: dataSize,
+ Name: defaultName,
+ Mode: defaultMode,
+ UID: defaultUID,
+ GID: defaultGID,
+ HashAlgorithms: hashAlgorithm,
+ ReadOffset: verifyStart,
+ ReadSize: verifySize,
+ Expected: hash,
+ DataAndTreeInSameFile: dataAndTreeInSameFile,
+ }
+}
+
+func TestVerifyInvalidRange(t *testing.T) {
+ testCases := []struct {
+ name string
+ verifyStart int64
+ verifySize int64
+ }{
+ // Verify range starts outside data range.
+ {
+ name: "StartOutsideRange",
+ verifyStart: usermem.PageSize,
+ verifySize: 1,
+ },
+ // Verify range ends outside data range.
+ {
+ name: "EndOutsideRange",
+ verifyStart: 0,
+ verifySize: 2 * usermem.PageSize,
+ },
+ // Verify range with negative size.
+ {
+ name: "NegativeSize",
+ verifyStart: 1,
+ verifySize: -1,
+ },
+ }
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+ var buf bytes.Buffer
+ _, params := prepareVerify(t, usermem.PageSize /* dataSize */, linux.FS_VERITY_HASH_ALG_SHA256, false /* dataAndTreeInSameFile */, tc.verifyStart, tc.verifySize, &buf)
+ if _, err := Verify(&params); errors.Is(err, nil) {
+ t.Errorf("Verification succeeded when expected to fail")
}
})
}
}
-func TestVerify(t *testing.T) {
- // The input data has size dataSize. The portion to be verified ranges from
- // verifyStart with verifySize. A bit is flipped in outOfRangeByteIndex to
- // confirm that modifications outside the verification range does not cause
- // issue. And a bit is flipped in modifyByte to confirm that
- // modifications in the verification range is caught during verification.
+func TestVerifyUnmodifiedMetadata(t *testing.T) {
testCases := []struct {
- dataSize int64
+ name string
+ hashAlgorithm int
+ dataAndTreeInSameFile bool
+ }{
+ {
+ name: "SHA256SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA512SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA256SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "SHA512SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ },
+ }
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+ var buf bytes.Buffer
+ _, params := prepareVerify(t, usermem.PageSize /* dataSize */, tc.hashAlgorithm, tc.dataAndTreeInSameFile, 0 /* verifyStart */, 0 /* verifySize */, &buf)
+ if _, err := Verify(&params); !errors.Is(err, nil) {
+ t.Errorf("Verification failed when expected to succeed: %v", err)
+ }
+ })
+ }
+}
+
+func TestVerifyModifiedName(t *testing.T) {
+ testCases := []struct {
+ name string
+ hashAlgorithm int
+ dataAndTreeInSameFile bool
+ }{
+ {
+ name: "SHA256SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA512SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA256SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "SHA512SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ },
+ }
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+ var buf bytes.Buffer
+ _, params := prepareVerify(t, usermem.PageSize /* dataSize */, tc.hashAlgorithm, tc.dataAndTreeInSameFile, 0 /* verifyStart */, 0 /* verifySize */, &buf)
+ params.Name += "abc"
+ if _, err := Verify(&params); errors.Is(err, nil) {
+ t.Errorf("Verification succeeded when expected to fail")
+ }
+ })
+ }
+}
+
+func TestVerifyModifiedSize(t *testing.T) {
+ testCases := []struct {
+ name string
+ hashAlgorithm int
+ dataAndTreeInSameFile bool
+ }{
+ {
+ name: "SHA256SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA512SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA256SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "SHA512SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ },
+ }
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+ var buf bytes.Buffer
+ _, params := prepareVerify(t, usermem.PageSize /* dataSize */, tc.hashAlgorithm, tc.dataAndTreeInSameFile, 0 /* verifyStart */, 0 /* verifySize */, &buf)
+ params.Size--
+ if _, err := Verify(&params); errors.Is(err, nil) {
+ t.Errorf("Verification succeeded when expected to fail")
+ }
+ })
+ }
+}
+
+func TestVerifyModifiedMode(t *testing.T) {
+ testCases := []struct {
+ name string
+ hashAlgorithm int
+ dataAndTreeInSameFile bool
+ }{
+ {
+ name: "SHA256SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA512SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA256SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "SHA512SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ },
+ }
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+ var buf bytes.Buffer
+ _, params := prepareVerify(t, usermem.PageSize /* dataSize */, tc.hashAlgorithm, tc.dataAndTreeInSameFile, 0 /* verifyStart */, 0 /* verifySize */, &buf)
+ params.Mode++
+ if _, err := Verify(&params); errors.Is(err, nil) {
+ t.Errorf("Verification succeeded when expected to fail")
+ }
+ })
+ }
+}
+
+func TestVerifyModifiedUID(t *testing.T) {
+ testCases := []struct {
+ name string
+ hashAlgorithm int
+ dataAndTreeInSameFile bool
+ }{
+ {
+ name: "SHA256SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA512SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA256SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "SHA512SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ },
+ }
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+ var buf bytes.Buffer
+ _, params := prepareVerify(t, usermem.PageSize /* dataSize */, tc.hashAlgorithm, tc.dataAndTreeInSameFile, 0 /* verifyStart */, 0 /* verifySize */, &buf)
+ params.UID++
+ if _, err := Verify(&params); errors.Is(err, nil) {
+ t.Errorf("Verification succeeded when expected to fail")
+ }
+ })
+ }
+}
+
+func TestVerifyModifiedGID(t *testing.T) {
+ testCases := []struct {
+ name string
+ hashAlgorithm int
+ dataAndTreeInSameFile bool
+ }{
+ {
+ name: "SHA256SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA512SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA256SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "SHA512SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ },
+ }
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+ var buf bytes.Buffer
+ _, params := prepareVerify(t, usermem.PageSize /* dataSize */, tc.hashAlgorithm, tc.dataAndTreeInSameFile, 0 /* verifyStart */, 0 /* verifySize */, &buf)
+ params.GID++
+ if _, err := Verify(&params); errors.Is(err, nil) {
+ t.Errorf("Verification succeeded when expected to fail")
+ }
+ })
+ }
+}
+
+func TestModifyOutsideVerifyRange(t *testing.T) {
+ testCases := []struct {
+ name string
+ // The byte with index modifyByte is modified.
+ modifyByte int64
+ hashAlgorithm int
+ dataAndTreeInSameFile bool
+ }{
+ {
+ name: "BeforeRangeSHA256SeparateFile",
+ modifyByte: 4*usermem.PageSize - 1,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "BeforeRangeSHA512SeparateFile",
+ modifyByte: 4*usermem.PageSize - 1,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "BeforeRangeSHA256SameFile",
+ modifyByte: 4*usermem.PageSize - 1,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "BeforeRangeSHA512SameFile",
+ modifyByte: 4*usermem.PageSize - 1,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "AfterRangeSHA256SeparateFile",
+ modifyByte: 5 * usermem.PageSize,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "AfterRangeSHA512SeparateFile",
+ modifyByte: 5 * usermem.PageSize,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "AfterRangeSHA256SameFile",
+ modifyByte: 5 * usermem.PageSize,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "AfterRangeSHA256SameFile",
+ modifyByte: 5 * usermem.PageSize,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ },
+ }
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+ dataSize := int64(8 * usermem.PageSize)
+ verifyStart := int64(4 * usermem.PageSize)
+ verifySize := int64(usermem.PageSize)
+ var buf bytes.Buffer
+ // Modified byte is outside verify range. Verify should succeed.
+ data, params := prepareVerify(t, dataSize, tc.hashAlgorithm, tc.dataAndTreeInSameFile, verifyStart, verifySize, &buf)
+ // Flip a bit in data and checks Verify results.
+ data[tc.modifyByte] ^= 1
+ n, err := Verify(&params)
+ if !errors.Is(err, nil) {
+ t.Errorf("Verification failed when expected to succeed: %v", err)
+ }
+ if n != verifySize {
+ t.Errorf("Got Verify output size %d, want %d", n, verifySize)
+ }
+ if int64(buf.Len()) != verifySize {
+ t.Errorf("Got Verify output buf size %d, want %d,", buf.Len(), verifySize)
+ }
+ if !bytes.Equal(data[verifyStart:verifyStart+verifySize], buf.Bytes()) {
+ t.Errorf("Incorrect output buf from Verify")
+ }
+ })
+ }
+}
+
+func TestModifyInsideVerifyRange(t *testing.T) {
+ testCases := []struct {
+ name string
verifyStart int64
verifySize int64
- // A byte in input data is modified during the test. If the
- // modified byte falls in verification range, Verify should
- // fail, otherwise Verify should still succeed.
- modifyByte int64
- modifyName bool
- modifySize bool
- modifyMode bool
- modifyUID bool
- modifyGID bool
- shouldSucceed bool
+ // The byte with index modifyByte is modified.
+ modifyByte int64
+ hashAlgorithm int
+ dataAndTreeInSameFile bool
}{
- // Verify range start outside the data range should fail.
- {
- dataSize: usermem.PageSize,
- verifyStart: usermem.PageSize,
- verifySize: 1,
- modifyByte: 0,
- shouldSucceed: false,
- },
- // Verifying range is valid if it starts inside data and ends
- // outside data range, in that case start to the end of data is
- // verified.
- {
- dataSize: usermem.PageSize,
- verifyStart: 0,
- verifySize: 2 * usermem.PageSize,
- modifyByte: 0,
- shouldSucceed: false,
- },
- // Invalid verify range (negative size) should fail.
- {
- dataSize: usermem.PageSize,
- verifyStart: 1,
- verifySize: -1,
- modifyByte: 0,
- shouldSucceed: false,
- },
- // 0 verify size should only verify metadata.
- {
- dataSize: usermem.PageSize,
- verifyStart: 0,
- verifySize: 0,
- modifyByte: 0,
- shouldSucceed: true,
- },
- // Modified name should fail verification.
- {
- dataSize: usermem.PageSize,
- verifyStart: 0,
- verifySize: 0,
- modifyByte: 0,
- modifyName: true,
- shouldSucceed: false,
- },
- // Modified size should fail verification.
- {
- dataSize: usermem.PageSize,
- verifyStart: 0,
- verifySize: 0,
- modifyByte: 0,
- modifySize: true,
- shouldSucceed: false,
- },
- // Modified mode should fail verification.
- {
- dataSize: usermem.PageSize,
- verifyStart: 0,
- verifySize: 0,
- modifyByte: 0,
- modifyMode: true,
- shouldSucceed: false,
- },
- // Modified UID should fail verification.
- {
- dataSize: usermem.PageSize,
- verifyStart: 0,
- verifySize: 0,
- modifyByte: 0,
- modifyUID: true,
- shouldSucceed: false,
- },
- // Modified GID should fail verification.
- {
- dataSize: usermem.PageSize,
- verifyStart: 0,
- verifySize: 0,
- modifyByte: 0,
- modifyGID: true,
- shouldSucceed: false,
- },
- // The test cases below use a block-aligned verify range.
+ // Test a block-aligned verify range.
// Modifying a byte in the verified range should cause verify
// to fail.
{
- dataSize: 8 * usermem.PageSize,
- verifyStart: 4 * usermem.PageSize,
- verifySize: usermem.PageSize,
- modifyByte: 4 * usermem.PageSize,
- shouldSucceed: false,
+ name: "BlockAlignedRangeSHA256SeparateFile",
+ verifyStart: 4 * usermem.PageSize,
+ verifySize: usermem.PageSize,
+ modifyByte: 4 * usermem.PageSize,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
},
- // Modifying a byte before the verified range should not cause
- // verify to fail.
{
- dataSize: 8 * usermem.PageSize,
- verifyStart: 4 * usermem.PageSize,
- verifySize: usermem.PageSize,
- modifyByte: 4*usermem.PageSize - 1,
- shouldSucceed: true,
+ name: "BlockAlignedRangeSHA512SeparateFile",
+ verifyStart: 4 * usermem.PageSize,
+ verifySize: usermem.PageSize,
+ modifyByte: 4 * usermem.PageSize,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
},
- // Modifying a byte after the verified range should not cause
- // verify to fail.
{
- dataSize: 8 * usermem.PageSize,
- verifyStart: 4 * usermem.PageSize,
- verifySize: usermem.PageSize,
- modifyByte: 5 * usermem.PageSize,
- shouldSucceed: true,
+ name: "BlockAlignedRangeSHA256SameFile",
+ verifyStart: 4 * usermem.PageSize,
+ verifySize: usermem.PageSize,
+ modifyByte: 4 * usermem.PageSize,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "BlockAlignedRangeSHA512SameFile",
+ verifyStart: 4 * usermem.PageSize,
+ verifySize: usermem.PageSize,
+ modifyByte: 4 * usermem.PageSize,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
},
// The tests below use a non-block-aligned verify range.
// Modifying a byte at strat of verify range should cause
// verify to fail.
{
- dataSize: 8 * usermem.PageSize,
- verifyStart: 4*usermem.PageSize + 123,
- verifySize: 2 * usermem.PageSize,
- modifyByte: 4*usermem.PageSize + 123,
- shouldSucceed: false,
+ name: "ModifyStartSHA256SeparateFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 4*usermem.PageSize + 123,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "ModifyStartSHA512SeparateFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 4*usermem.PageSize + 123,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "ModifyStartSHA256SameFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 4*usermem.PageSize + 123,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "ModifyStartSHA512SameFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 4*usermem.PageSize + 123,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
},
// Modifying a byte at the end of verify range should cause
// verify to fail.
{
- dataSize: 8 * usermem.PageSize,
- verifyStart: 4*usermem.PageSize + 123,
- verifySize: 2 * usermem.PageSize,
- modifyByte: 6*usermem.PageSize + 123,
- shouldSucceed: false,
+ name: "ModifyEndSHA256SeparateFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 6*usermem.PageSize + 123,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "ModifyEndSHA512SeparateFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 6*usermem.PageSize + 123,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "ModifyEndSHA256SameFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 6*usermem.PageSize + 123,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "ModifyEndSHA512SameFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 6*usermem.PageSize + 123,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
},
// Modifying a byte in the middle verified block should cause
// verify to fail.
{
- dataSize: 8 * usermem.PageSize,
- verifyStart: 4*usermem.PageSize + 123,
- verifySize: 2 * usermem.PageSize,
- modifyByte: 5*usermem.PageSize + 123,
- shouldSucceed: false,
+ name: "ModifyMiddleSHA256SeparateFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 5*usermem.PageSize + 123,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "ModifyMiddleSHA512SeparateFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 5*usermem.PageSize + 123,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "ModifyMiddleSHA256SameFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 5*usermem.PageSize + 123,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "ModifyMiddleSHA512SameFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 5*usermem.PageSize + 123,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
},
// Modifying a byte in the first block in the verified range
// should cause verify to fail, even the modified bit itself is
// out of verify range.
{
- dataSize: 8 * usermem.PageSize,
- verifyStart: 4*usermem.PageSize + 123,
- verifySize: 2 * usermem.PageSize,
- modifyByte: 4*usermem.PageSize + 122,
- shouldSucceed: false,
+ name: "ModifyFirstBlockSHA256SeparateFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 4*usermem.PageSize + 122,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "ModifyFirstBlockSHA512SeparateFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 4*usermem.PageSize + 122,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "ModifyFirstBlockSHA256SameFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 4*usermem.PageSize + 122,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "ModifyFirstBlockSHA512SameFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 4*usermem.PageSize + 122,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
},
// Modifying a byte in the last block in the verified range
// should cause verify to fail, even the modified bit itself is
// out of verify range.
{
- dataSize: 8 * usermem.PageSize,
- verifyStart: 4*usermem.PageSize + 123,
- verifySize: 2 * usermem.PageSize,
- modifyByte: 6*usermem.PageSize + 124,
- shouldSucceed: false,
+ name: "ModifyLastBlockSHA256SeparateFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 6*usermem.PageSize + 124,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "ModifyLastBlockSHA512SeparateFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 6*usermem.PageSize + 124,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "ModifyLastBlockSHA256SameFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 6*usermem.PageSize + 124,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "ModifyLastBlockSHA512SameFile",
+ verifyStart: 4*usermem.PageSize + 123,
+ verifySize: 2 * usermem.PageSize,
+ modifyByte: 6*usermem.PageSize + 124,
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
},
}
-
for _, tc := range testCases {
- t.Run(fmt.Sprintf("%d", tc.modifyByte), func(t *testing.T) {
- data := make([]byte, tc.dataSize)
- // Generate random bytes in data.
- rand.Read(data)
-
- for _, hashAlgorithms := range []int{linux.FS_VERITY_HASH_ALG_SHA256, linux.FS_VERITY_HASH_ALG_SHA512} {
- for _, dataAndTreeInSameFile := range []bool{false, true} {
- var tree bytesReadWriter
- genParams := GenerateParams{
- Size: int64(len(data)),
- Name: defaultName,
- Mode: defaultMode,
- UID: defaultUID,
- GID: defaultGID,
- HashAlgorithms: hashAlgorithms,
- TreeReader: &tree,
- TreeWriter: &tree,
- DataAndTreeInSameFile: dataAndTreeInSameFile,
- }
- if dataAndTreeInSameFile {
- tree.Write(data)
- genParams.File = &tree
- } else {
- genParams.File = &bytesReadWriter{
- bytes: data,
- }
- }
- hash, err := Generate(&genParams)
- if err != nil {
- t.Fatalf("Generate failed: %v", err)
- }
-
- // Flip a bit in data and checks Verify results.
- var buf bytes.Buffer
- data[tc.modifyByte] ^= 1
- verifyParams := VerifyParams{
- Out: &buf,
- File: bytes.NewReader(data),
- Tree: &tree,
- Size: tc.dataSize,
- Name: defaultName,
- Mode: defaultMode,
- UID: defaultUID,
- GID: defaultGID,
- HashAlgorithms: hashAlgorithms,
- ReadOffset: tc.verifyStart,
- ReadSize: tc.verifySize,
- Expected: hash,
- DataAndTreeInSameFile: dataAndTreeInSameFile,
- }
- if tc.modifyName {
- verifyParams.Name = defaultName + "abc"
- }
- if tc.modifySize {
- verifyParams.Size--
- }
- if tc.modifyMode {
- verifyParams.Mode = defaultMode + 1
- }
- if tc.modifyUID {
- verifyParams.UID = defaultUID + 1
- }
- if tc.modifyGID {
- verifyParams.GID = defaultGID + 1
- }
- if tc.shouldSucceed {
- n, err := Verify(&verifyParams)
- if err != nil && err != io.EOF {
- t.Errorf("Verification failed when expected to succeed: %v", err)
- }
- if n != tc.verifySize {
- t.Errorf("Got Verify output size %d, want %d", n, tc.verifySize)
- }
- if int64(buf.Len()) != tc.verifySize {
- t.Errorf("Got Verify output buf size %d, want %d,", buf.Len(), tc.verifySize)
- }
- if !bytes.Equal(data[tc.verifyStart:tc.verifyStart+tc.verifySize], buf.Bytes()) {
- t.Errorf("Incorrect output buf from Verify")
- }
- } else {
- if _, err := Verify(&verifyParams); err == nil {
- t.Errorf("Verification succeeded when expected to fail")
- }
- }
- }
+ t.Run(tc.name, func(t *testing.T) {
+ dataSize := int64(8 * usermem.PageSize)
+ var buf bytes.Buffer
+ data, params := prepareVerify(t, dataSize, tc.hashAlgorithm, tc.dataAndTreeInSameFile, tc.verifyStart, tc.verifySize, &buf)
+ // Flip a bit in data and checks Verify results.
+ data[tc.modifyByte] ^= 1
+ if _, err := Verify(&params); errors.Is(err, nil) {
+ t.Errorf("Verification succeeded when expected to fail")
}
})
}
}
func TestVerifyRandom(t *testing.T) {
- rand.Seed(time.Now().UnixNano())
- // Use a random dataSize. Minimum size 2 so that we can pick a random
- // portion from it.
- dataSize := rand.Int63n(200*usermem.PageSize) + 2
- data := make([]byte, dataSize)
- // Generate random bytes in data.
- rand.Read(data)
-
- for _, hashAlgorithms := range []int{linux.FS_VERITY_HASH_ALG_SHA256, linux.FS_VERITY_HASH_ALG_SHA512} {
- for _, dataAndTreeInSameFile := range []bool{false, true} {
- var tree bytesReadWriter
- genParams := GenerateParams{
- Size: int64(len(data)),
- Name: defaultName,
- Mode: defaultMode,
- UID: defaultUID,
- GID: defaultGID,
- HashAlgorithms: hashAlgorithms,
- TreeReader: &tree,
- TreeWriter: &tree,
- DataAndTreeInSameFile: dataAndTreeInSameFile,
- }
-
- if dataAndTreeInSameFile {
- tree.Write(data)
- genParams.File = &tree
- } else {
- genParams.File = &bytesReadWriter{
- bytes: data,
- }
- }
- hash, err := Generate(&genParams)
- if err != nil {
- t.Fatalf("Generate failed: %v", err)
- }
+ testCases := []struct {
+ name string
+ hashAlgorithm int
+ dataAndTreeInSameFile bool
+ }{
+ {
+ name: "SHA256SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA512SeparateFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: false,
+ },
+ {
+ name: "SHA256SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA256,
+ dataAndTreeInSameFile: true,
+ },
+ {
+ name: "SHA512SameFile",
+ hashAlgorithm: linux.FS_VERITY_HASH_ALG_SHA512,
+ dataAndTreeInSameFile: true,
+ },
+ }
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+ rand.Seed(time.Now().UnixNano())
+ // Use a random dataSize. Minimum size 2 so that we can pick a random
+ // portion from it.
+ dataSize := rand.Int63n(200*usermem.PageSize) + 2
// Pick a random portion of data.
start := rand.Int63n(dataSize - 1)
size := rand.Int63n(dataSize) + 1
var buf bytes.Buffer
- verifyParams := VerifyParams{
- Out: &buf,
- File: bytes.NewReader(data),
- Tree: &tree,
- Size: dataSize,
- Name: defaultName,
- Mode: defaultMode,
- UID: defaultUID,
- GID: defaultGID,
- HashAlgorithms: hashAlgorithms,
- ReadOffset: start,
- ReadSize: size,
- Expected: hash,
- DataAndTreeInSameFile: dataAndTreeInSameFile,
- }
+ data, params := prepareVerify(t, dataSize, tc.hashAlgorithm, tc.dataAndTreeInSameFile, start, size, &buf)
// Checks that the random portion of data from the original data is
// verified successfully.
- n, err := Verify(&verifyParams)
+ n, err := Verify(&params)
if err != nil && err != io.EOF {
t.Errorf("Verification failed for correct data: %v", err)
}
@@ -608,8 +1045,8 @@ func TestVerifyRandom(t *testing.T) {
// Verify that modified metadata should fail verification.
buf.Reset()
- verifyParams.Name = defaultName + "abc"
- if _, err := Verify(&verifyParams); err == nil {
+ params.Name = defaultName + "abc"
+ if _, err := Verify(&params); errors.Is(err, nil) {
t.Error("Verify succeeded for modified metadata, expect failure")
}
@@ -617,12 +1054,12 @@ func TestVerifyRandom(t *testing.T) {
buf.Reset()
randBytePos := rand.Int63n(size)
data[start+randBytePos] ^= 1
- verifyParams.File = bytes.NewReader(data)
- verifyParams.Name = defaultName
+ params.File = bytes.NewReader(data)
+ params.Name = defaultName
- if _, err := Verify(&verifyParams); err == nil {
+ if _, err := Verify(&params); errors.Is(err, nil) {
t.Error("Verification succeeded for modified data, expect failure")
}
- }
+ })
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 03:34:09 +0000