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eventlog_test.go
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package server
import (
"bytes"
"crypto"
"crypto/rand"
"encoding/hex"
"fmt"
"strings"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/google/go-configfs-tsm/configfs/fakertmr"
configfstsmrtmr "github.com/google/go-configfs-tsm/rtmr"
"github.com/google/go-eventlog/proto/state"
"github.com/google/go-eventlog/register"
"github.com/google/go-tpm-tools/cel"
"github.com/google/go-tpm-tools/client"
"github.com/google/go-tpm-tools/internal/test"
attestpb "github.com/google/go-tpm-tools/proto/attest"
pb "github.com/google/go-tpm-tools/proto/tpm"
"github.com/google/go-tpm/legacy/tpm2"
"github.com/google/go-tpm/tpmutil"
"google.golang.org/protobuf/testing/protocmp"
)
type eventLog struct {
RawLog []byte
Banks []*pb.PCRs
ExpectedEFIAppDigests map[pb.HashAlgo][]string
}
// The Arch Linux event log has two known failures due to our parser's strict checks.
var archLinuxKnownParsingFailures = []string{
"SecureBoot data len is 0, expected 1",
"found EFIBootServicesApplication in PCR4 before CallingEFIApp event",
}
// Agile Event Log from a RHEL 8 GCE instance with Secure Boot enabled
var Rhel8GCE = eventLog{
RawLog: test.Rhel8EventLog,
Banks: []*pb.PCRs{{
Hash: pb.HashAlgo_SHA1,
Pcrs: map[uint32][]byte{
0: decodeHex("0f2d3a2a1adaa479aeeca8f5df76aadc41b862ea"),
1: decodeHex("5cc549378bafaa92e965c7e9c287925cfff33abd"),
2: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
3: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
4: decodeHex("7fbe2df30156ca4934109f48d850ab327110f8fa"),
5: decodeHex("3258daa13f4cccf245c170481c76e2a4602e5a7b"),
6: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
7: decodeHex("d7a632f8990b2171e987041b0a3c69fc1b2a4f27"),
8: decodeHex("15aab2077008f8325e7c61ee39fedd7118aad5d7"),
9: decodeHex("25de9455ef4e8180b76bbb9bb54a82f9a73abb0a"),
14: decodeHex("1f5149668c40524e01be9cbc3ad527645943f148"),
},
}, {
Hash: pb.HashAlgo_SHA256,
Pcrs: map[uint32][]byte{
0: decodeHex("24af52a4f429b71a3184a6d64cddad17e54ea030e2aa6576bf3a5a3d8bd3328f"),
1: decodeHex("454220afaa80c83c3839f6cccd8b3c88bf4f562316a9dda1121c578c9e005a53"),
2: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
3: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
4: decodeHex("758a3d35f1b0ff5b135dacd07db0c8132c0ac665d944090d4bf96e66447a245c"),
5: decodeHex("53d0ee36163219201e686167bbb71ec505b3ba2917b9d9183ed84aad26cfeb89"),
6: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
7: decodeHex("5fd54361d580eb7592adb8deb236ff35444ceeac7148f24b3de63c041f12b3da"),
8: decodeHex("25c3874041ebd4e9a21b6ed71b624a7bfa99907a8dcea7f129a4c64cbaf5829a"),
9: decodeHex("d43b2f61eb18b4791812ff5f20ab20e4ef621ba683370bedf5dbdf518b3a8078"),
14: decodeHex("d8f57ebcc1a23cc46832696e1a657f720e1be8f5b405bb7204682114e363b455"),
},
}},
ExpectedEFIAppDigests: map[pb.HashAlgo][]string{
pb.HashAlgo_SHA1: {
"95f400d9003b4e8c0cb4734efcf547e36fc4100c",
"4f60d11ad6ac9a76837834f1371bc9521d018779",
"075f3bc8c7363c35a87ce56c604fa9201a97f79d",
},
pb.HashAlgo_SHA256: {
"40d6cae02973789080cf4c3a9ad11b5a0a4d8bba4438ab96e276cc784454dee7",
"e8a268c431da72caaae407f729f602b9dbf5d1d43492d4a51cc2b688a08586e3",
"e4c0382f98feaebfd43923a85fd6da9a20e1a48524a4d5928c31850ca1a96a6e",
},
pb.HashAlgo_SHA384: {
"66de9a210659294720af06838309fc1f4d0de82c646a62c1dd9f068cd331d2e05fd666377dbc11e84a796ce00108ab19",
"c1d031b07446588fa50f4eec3d8520d99ed01f21350b9c581e13f4c5a8c712cb5e3cbecc41ccab74465543439f7eb1e6",
"d844e63b32a73aadde4f78dda7cb7df73d75114f3a5964401847eb716142a06607ea95efee20f51283e85afca8da3afd",
},
},
}
// Agile Event Log from a Ubuntu 18.04 GCE instance with Secure Boot and
// Confidential Computing enabled.
var UbuntuAmdSevGCE = eventLog{
RawLog: test.Ubuntu1804AmdSevEventLog,
Banks: []*pb.PCRs{{
Hash: pb.HashAlgo_SHA1,
Pcrs: map[uint32][]byte{
0: decodeHex("c032c3b51dbb6f96b047421512fd4b4dfde496f3"),
1: decodeHex("35f38e5ce90728b02a0f66d836eef53d287e69bf"),
2: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
3: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
4: decodeHex("41c68947aeee8a59110c7989a9b7a55df547f003"),
5: decodeHex("baee22b5cce9029300f909add54d75d5d7475cfd"),
6: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
7: decodeHex("6530ed2dcba68801c78ca08753f239118bead7c8"),
8: decodeHex("4e5533d878287970f3ef8d374fb140d93bcb2c37"),
9: decodeHex("1b79f2140a84462cb13d1a0c1904daefd24d7938"),
},
}, {
Hash: pb.HashAlgo_SHA256,
Pcrs: map[uint32][]byte{
0: decodeHex("0f35c214608d93c7a6e68ae7359b4a8be5a0e99eea9107ece427c4dea4e439cf"),
1: decodeHex("add81cbc06b154716ac7bd5999c84cbc520184d57c58102657d270274508d9ce"),
2: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
3: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
4: decodeHex("b4b94e840fc9352e20bdb5b456b4c242af0fb146755b6935d8eda000ea368a31"),
5: decodeHex("0b75168095fd6464ff1f9943b762ec009a3ae84c5e76cf67361e16b9db30d28e"),
6: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
7: decodeHex("61af3f499f1a86be54458fd30d193fa913a7e23ca3103fa3d0abaefd3cd4f9b8"),
8: decodeHex("c324da9d0c54252c37af697cdd58b066f2bb0f4a69752d27623bc738d02e9486"),
9: decodeHex("2d334f1eeb9a16dabaccaa746ff1c0dce2e9aeb3f3a4a314e5e1e61b01e940d0"),
},
}},
ExpectedEFIAppDigests: map[pb.HashAlgo][]string{
pb.HashAlgo_SHA1: {
"21e79438580ec89df674dfe12653d77d132c3936",
"9a4c7c895a5d40c3906121ff59c6fe267a4c32e0",
},
pb.HashAlgo_SHA256: {
"2ea4cb6a1f1eb1d3dce82d54fde26ded243ba3e18de7c6d211902a594fe56788",
"835f940e97bac2f7c171819b1fcc4bebe72a1c4ea7d7245088ef32d253085bb3",
},
pb.HashAlgo_SHA384: {
"9b2baf7073fd9b7df3091b69ae7e48453450ae7b5311b37de11b79da75f175b8b2ed69f7d39406501653b35cbe90a030",
"b0a19b24395a4690eea97916483dc291a38c6023df20aa296d85064194cebe9097f6b5e8490fd57a4e6b01167a8c9c7c",
},
},
}
// Agile Event Log from a Ubuntu 21.04 GCE instance without a DBX and with Secure Boot disabled
var Ubuntu2104NoDbxGCE = eventLog{
RawLog: test.Ubuntu2104NoDbxEventLog,
Banks: []*pb.PCRs{{
Hash: pb.HashAlgo_SHA1,
Pcrs: map[uint32][]byte{
0: decodeHex("0f2d3a2a1adaa479aeeca8f5df76aadc41b862ea"),
1: decodeHex("36c6b7436c37243c5f6744b73ced4df1287cd16a"),
2: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
3: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
4: decodeHex("8d9868b66afcf4039eaf8ef5228556d9f313659f"),
5: decodeHex("b0eaa45a496e0d933f63e97fd2362192dd48e369"),
6: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
7: decodeHex("777795cbdeca679f7749d8d09fc12941dcc9912a"),
8: decodeHex("5dfae5320ea06ddd1c62d296844a9b4b32b49972"),
9: decodeHex("f53869ab9015b5ad736e5f00e44fdfee2fdfde27"),
14: decodeHex("cd3734d2bdfcfba9e443ac02c03c812ffcceb255"),
},
}, {
Hash: pb.HashAlgo_SHA256,
Pcrs: map[uint32][]byte{
0: decodeHex("24af52a4f429b71a3184a6d64cddad17e54ea030e2aa6576bf3a5a3d8bd3328f"),
1: decodeHex("f7dab5fda6b082e0ec1a12c43dd996ee409111422cda752a784620313039db19"),
2: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
3: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
4: decodeHex("295aeaeacad1d507930bab18418f905eeda633ea67b2ab94c5e5fd3a4d47ac58"),
5: decodeHex("e4f1359accfe48b19af7d38e98a3f373116b55b7f7a6f58f826f409a91d9fd28"),
6: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
7: decodeHex("ca37324eeffabd318d30a20f15bf27ce25dc33e2c9856279ff6c2ced58b02efa"),
8: decodeHex("2f2559cae74bb441d75afea5edb78d9a645db9f4bf8dea84bab0861ce6032e18"),
9: decodeHex("9f27883322aaaf043662c27542d9685790c687ea554e4e2ae30f0e099a2e4889"),
14: decodeHex("8351c65483c5419079e8c96758dd2130bee075d71fea226f68ec4eb5bfc71983"),
},
}},
ExpectedEFIAppDigests: map[pb.HashAlgo][]string{
pb.HashAlgo_SHA1: {
"92e6ec17937f600b9ec7f23adf4ea5553b4e2364",
"4f9604e61091095594c206c8a404afe187a92586",
},
pb.HashAlgo_SHA256: {
"d99c93fcb042dbe52707bbde371c75fcf081dd5b0c88a195d44cc57536f6f521",
"b0a836fec2faf4a9bea0e1a5f1945bc86ddc03ac98ce0ae172ed9b1e536d7595",
},
pb.HashAlgo_SHA384: {
"d8811e9c08119168b156255c6d695614d1593422bc5044186d29c1aaaa86fff0a633f324ac1ac1122e547479ce50a75a",
"bbcdda8a6d872385b10802434eb8de1ac7b92dbaddf18bc1d7ea24fcc71b45291db5cc7b930a29c93405d6aecdb70683",
},
},
}
// Agile Event Log from a Ubuntu 21.04 GCE instance with Secure Boot disabled
var Ubuntu2104NoSecureBootGCE = eventLog{
RawLog: test.Ubuntu2104NoSecureBootEventLog,
Banks: []*pb.PCRs{{
Hash: pb.HashAlgo_SHA1,
Pcrs: map[uint32][]byte{
0: decodeHex("0f2d3a2a1adaa479aeeca8f5df76aadc41b862ea"),
1: decodeHex("f5310dfcfcec5571cbf730064d526906c9cea2f0"),
2: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
3: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
4: decodeHex("e53d909941dcbc699b273fc4c0d817a41c6ab975"),
5: decodeHex("9e2af4bac1432830594b1ae90c68c52a20a9700e"),
6: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
7: decodeHex("ede7204673f41ac2592b0d3b4cd429b43f39dc61"),
8: decodeHex("bda59abe1c7d18e0b85edfcb4381f10d4dcc88f7"),
9: decodeHex("39fd49224476f4d7eea26a53e264c9c33e47649c"),
14: decodeHex("cd3734d2bdfcfba9e443ac02c03c812ffcceb255"),
},
}, {
Hash: pb.HashAlgo_SHA256,
Pcrs: map[uint32][]byte{
0: decodeHex("24af52a4f429b71a3184a6d64cddad17e54ea030e2aa6576bf3a5a3d8bd3328f"),
1: decodeHex("45ed8540f34db53220ef197e5fb8a3835b2095454349e445f397f13d91c509a5"),
2: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
3: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
4: decodeHex("ebc7ae25d0347868250995c9a8fff16bf79e048453262d0ef2756e213c76181c"),
5: decodeHex("47715f9f2c10769da6ee23be5633fd88e247caf162f4eeb0b6f8482ccfeadfb5"),
6: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
7: decodeHex("0d8847bc5eca06452df10e2f214363845c7ac11d47525a5474e225e72ce25dfe"),
8: decodeHex("b9a324947de94ec2fd4b04483ecfcb37dfdd520a7c0ecf73c77bf2595549c84f"),
9: decodeHex("adb87be3efd96cc3a2f66b8aa7564f9727563ef494a95d571a3f38ff4afb25dd"),
14: decodeHex("8351c65483c5419079e8c96758dd2130bee075d71fea226f68ec4eb5bfc71983"),
},
}},
ExpectedEFIAppDigests: map[pb.HashAlgo][]string{
pb.HashAlgo_SHA1: {
"22df40d6e32d4721f1b2406b2b4a3bb0ca10ead5",
"4f9604e61091095594c206c8a404afe187a92586",
},
pb.HashAlgo_SHA256: {
"6265b732b005b3f330bcd1843374e5ec6ec5aef27cdb97a23daeb8580abbf526",
"b0a836fec2faf4a9bea0e1a5f1945bc86ddc03ac98ce0ae172ed9b1e536d7595",
},
pb.HashAlgo_SHA384: {
"4f491210da8f59f09cd16523b44db22e83d8b611c3b14656d3b078dd451347ab195177fc78cf8d5578376f1f5f9bb821",
"bbcdda8a6d872385b10802434eb8de1ac7b92dbaddf18bc1d7ea24fcc71b45291db5cc7b930a29c93405d6aecdb70683",
},
},
}
// Agile Event Log from a Ubuntu 24.04 GCE AMD_SEVSNP instance with Secure Boot disabled
var Ubuntu2404AmdSevSnp = eventLog{
RawLog: test.Ubuntu2404AmdSevSnpEventLog,
Banks: []*pb.PCRs{{
Hash: pb.HashAlgo_SHA1,
Pcrs: map[uint32][]byte{
0: decodeHex("8124f09f069c7d2d9acf5ce4eab928a7103a0bb2"),
1: decodeHex("f00d6bbdea9ba55996f237a7f95f2b328a44e3f2"),
2: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
3: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
4: decodeHex("175f4319fd7ac683bf49f2e7b837630e4fa8603f"),
5: decodeHex("f65b39c7aec83294f796c1ea4acc987f80914efe"),
6: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
7: decodeHex("7067b17aa6b3de0d22d17a59dce1e17e649cb56a"),
8: decodeHex("5f4a1177c33521b0e48d855cf770520f8ab744de"),
9: decodeHex("c6ee69063ab752df6c4ab99a80b12f3e5c432535"),
14: decodeHex("a482a15e112717d6a915b989a0ea6140a507e3e6"),
},
}, {
Hash: pb.HashAlgo_SHA256,
Pcrs: map[uint32][]byte{
0: decodeHex("50597a27846e91d025eef597abbc89f72bff9af849094db97b0684d8bc4c515e"),
1: decodeHex("57344e1cc8c6619413df33013a7cd67915459f967395af41db21c1fa7ca9c307"),
2: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
3: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
4: decodeHex("abe8b3fa6aecb36c2fd93c6f6edde661c21b353d007410a2739d69bfa7e1b9be"),
5: decodeHex("0b0e1903aeb1bff649b82dba2cdcf5c4ffb75027e54f151ab00b3b989f16a300"),
6: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
7: decodeHex("33ad69850fb2c7f30b4f8b4bc10ed93fc954dc07fa726e84f50f3d192dc1c140"),
8: decodeHex("6932a3f71dc55ad3c1a6ac2196eeac26a1b7164b6bbfa106625d94088ec3ecc3"),
9: decodeHex("ce08798b283c7a0ddc5e9ad1d602304b945b741fc60c20e254eafa0f4782512b"),
14: decodeHex("306f9d8b94f17d93dc6e7cf8f5c79d652eb4c6c4d13de2dddc24af416e13ecaf"),
},
}},
ExpectedEFIAppDigests: map[pb.HashAlgo][]string{
pb.HashAlgo_SHA1: {
"7eac7a5171a01cf975bb6ac1b0eb6eb79a391d5e",
"ec49599026c979912d8f18cfd4b260516a4d4ac1",
},
pb.HashAlgo_SHA256: {
"724de6844dd0fe618ba5776c7bca0728be38a6544e24e44ef259b987b7abce80",
"5e8cb75acdf8e09e5fc14cc2d6ce0c2288af208976d97309851c661e91ec1e03",
},
pb.HashAlgo_SHA384: {
"4637fb5cd30847e5f09ae24f8a50ce1611c4d21afd0ecb69c8ec40bc82dc11bc48abda1f8044fe340bfb70b29606eb47",
"c051991523ea083f466f13c2a2d11d77254f6110bc8ae3714f345cef8f33cde26082b49dda0f56ef324a62a10b556d1e",
},
},
}
// Agile Event Log from Alex's gLinux laptop with secure boot disabled
var GlinuxNoSecureBootLaptop = eventLog{
RawLog: test.GlinuxAlexEventLog,
Banks: []*pb.PCRs{{
Hash: pb.HashAlgo_SHA1,
Pcrs: map[uint32][]byte{
0: decodeHex("29d236609a5f9cc6912af44ba5f57b13a17c8a84"),
1: decodeHex("db16852a369b2503d6cc6c0007501c837dbe1170"),
2: decodeHex("0c8ef58d40b8cd1fe15f6b45fc1b385dd251eec0"),
3: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
4: decodeHex("c56cddf3dcf59a473a239efd17b130391e24b0df"),
5: decodeHex("23606963a2813421f5b6e76e32a337ff8940e413"),
6: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
7: decodeHex("9221b8fc57b60cb7de507dc016f88d4600cde9c5"),
},
}, {
Hash: pb.HashAlgo_SHA256,
Pcrs: map[uint32][]byte{
0: decodeHex("0e5ea849d7647a1ac1becc096fee4df98f00f8015f934afadaab0b8aa20b38a5"),
1: decodeHex("9750400838980c9419764b9cf19c975c0e159c18ebe21cb897c6e834a8d8d433"),
2: decodeHex("970096d49105b0404999173e49c3f6b8597b9c4c5ff6a9e364b55ce01037578e"),
3: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
4: decodeHex("ddb124ca9013f1e42f98537f7f381e47c5e6caa988cf2b4088f452c5a8dd912d"),
5: decodeHex("fb58603615cfec59c0428e71913d30d45f38e4280380cc814135a7659c246b13"),
6: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
7: decodeHex("9d1be46302bc4f5055c90a0376d9142e397ca8744f387c9824170f1bc855fde5"),
},
}},
}
// Agile Event Log from an Arch Linux worksation with systemd-boot and Secure Boot Disabled
var ArchLinuxWorkstation = eventLog{
RawLog: test.ArchLinuxWorkstationEventLog,
Banks: []*pb.PCRs{{
Hash: pb.HashAlgo_SHA1,
Pcrs: map[uint32][]byte{
0: decodeHex("a0487b0d95387d4a30560edf5f041307bf4a1dcc"),
1: decodeHex("56b71c334a5b67d3b7b3343e3241dff5a1ad87bf"),
2: decodeHex("01098a68e44e4fbd0af3b9a836b1b79e78c4f6f5"),
3: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
4: decodeHex("4c8b6f359b5e5cb9d09e825009a98e1281165b01"),
5: decodeHex("0dfa5ca60508ac5214515b20ed3e66289514fcb6"),
6: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
7: decodeHex("029c700c2fa2bc83cbf3ce4ee501ad4d984ec5ae"),
8: decodeHex("aa99fc93faa0777f42da6e1ae77a0653b5005619"),
},
}, {
Hash: pb.HashAlgo_SHA256,
Pcrs: map[uint32][]byte{
0: decodeHex("758b773d94feabf52ef5a4c00a7ad2c80d8d6e6d9d58756150be9bc973da9087"),
1: decodeHex("bfda688a5d320123fddb3fc70b746bc17647e2e7f2f96e130d429542bf4622d5"),
2: decodeHex("65dee4a48cde677aa89fa83c5c35e883fda658f743853e3ebad504ca6702f7c5"),
3: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
4: decodeHex("925d453d3dfef4ac0c72c957402163d45fa95d05e6d53f047263a3a60b598325"),
5: decodeHex("202522f005ef625588bb7c9e21335ba96a63c5086306138885b3bb2c381730ca"),
6: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
7: decodeHex("3b4a4db44b7a872524055364e62e897ae678e0d47ab0809f65c3a4ed77f66ab9"),
8: decodeHex("47591b43af431963eaeb5238a5c42eda1eb0014c27f7de7ae483066a2d2a2e61"),
},
}},
}
// Legacy Event Log from a Debian 10 GCE instance with Secure Boot enabled
var Debian10GCE = eventLog{
RawLog: test.Debian10EventLog,
Banks: []*pb.PCRs{{
Hash: pb.HashAlgo_SHA1,
Pcrs: map[uint32][]byte{
0: decodeHex("0f2d3a2a1adaa479aeeca8f5df76aadc41b862ea"),
1: decodeHex("b1676439cac1531683990fefe2218a43239d6fe8"),
2: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
3: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
4: decodeHex("1eb30816474a3f144e99b24e4ad480b2e51fd9e1"),
5: decodeHex("019079179dbc0eb5992c500dcf8a095910ac590d"),
6: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
7: decodeHex("9e6c57e850f371c2a7fe02bca552149363952318"),
},
}},
// We shouldn't use these digests, as this Debian firmware does not measure
// ExitBootService events, which means an attacker could extend additional
// events after UEFI hands off the event log.
ExpectedEFIAppDigests: map[pb.HashAlgo][]string{
pb.HashAlgo_SHA1: {
"47263679db883d7ad9adbc93d6a1fbf8095f0133",
"3fae23b18d72350207661af3875f2c492e97621c",
"89b08941b47dcfbd4c8b3f2bc0fad984cd836b21",
},
},
}
// Agile Event Log from a Ubuntu 21.04 GCE instance with Secure Boot disabled
var COS85AmdSev = eventLog{
RawLog: test.Cos85AmdSevEventLog,
Banks: []*pb.PCRs{{
Hash: pb.HashAlgo_SHA1,
Pcrs: map[uint32][]byte{
0: decodeHex("c032c3b51dbb6f96b047421512fd4b4dfde496f3"),
1: decodeHex("e3e9e1d9deacd95b289bbbd3a1717a57af7d211b"),
2: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
3: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
4: decodeHex("6168c9ce88a8658920f2cf2f9012d3c6bbfab79b"),
5: decodeHex("fb6b3a15b220a74b0c4f73416919476702e930e2"),
6: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
7: decodeHex("42e669233f0e826df5093abfd6998c020df2de88"),
8: decodeHex("72778b0ba3c491db25eb7c8368cb1fb51f0ce458"),
9: decodeHex("08bd04f0dbadf591510340d94a0019c0ddcb779f"),
},
}, {
Hash: pb.HashAlgo_SHA256,
Pcrs: map[uint32][]byte{
0: decodeHex("0f35c214608d93c7a6e68ae7359b4a8be5a0e99eea9107ece427c4dea4e439cf"),
1: decodeHex("6eb40f5b6bfafcb9914d486ce59404acd24bc13a6a3c45cda3b44c9d7053d638"),
2: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
3: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
4: decodeHex("d690bdac2aa8b73a1d718cb91990df07d0747b07ea57b3b2d0f0d511f0d90491"),
5: decodeHex("e9e0b32564b6f8215b1bd43954d9f910682d39c3b18abd4737ac3b797cf269e0"),
6: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
7: decodeHex("3365d7fa2b024c852913c06e04ffbfa6ea5289f743bbf1a76f7ffdf21ed84793"),
8: decodeHex("9e9b6511ae6ad443aae4c7bf998ffffbcd271c874f1efab9d692f129eb6e6c18"),
9: decodeHex("f4f2d92d6d54f6c41f2706fd98091317642e0680a7902c72893d41e3464a93b7"),
},
}},
ExpectedEFIAppDigests: map[pb.HashAlgo][]string{
pb.HashAlgo_SHA1: {
"bfeec15d9359fe0aa8b5fb6451d1f73e5144c6d3",
"860848ad3f129051f1e252749011cf7f7df837ee",
"91cd5aa9c3e407237e8aeb122d4ab94494034a90",
},
pb.HashAlgo_SHA256: {
"dba8d69ffb244496ac8ab2950695d3da539d6ac5ec660fc6b4bdde245284cf23",
"f7bad83f87940312e4642530a9a6242e88529dc37a497d7d4e7c1c070566d542",
"6f6afb3caed004e727200a0c310731bd8ab4cd391b2d95cedf67d08e1e8e5e7e",
},
pb.HashAlgo_SHA384: {
"778bd7d6385d8ca0da5e504e3e554b67d98d9a712d957cb4cbb4d9b2e66ca96e31ddc18680af02b03a3a8a1b08da6aca",
"d014c8c69b17ceb0f46be22b928f52684e717f40288246a61dadba00b1368c883cdde4e98762cc6788d94d0bcbd3f7ca",
"ff8ff1db8fc98d02d944a90c58103b1b2ad3ba893ba4f302a006a572951491622341bb9387de20dd072cb8b6b3583cd0",
},
},
}
var COS93AmdSev = eventLog{
RawLog: test.Cos93AmdSevEventLog,
Banks: []*pb.PCRs{{
Hash: pb.HashAlgo_SHA1,
Pcrs: map[uint32][]byte{
0: decodeHex("c032c3b51dbb6f96b047421512fd4b4dfde496f3"),
1: decodeHex("e3e9e1d9deacd95b289bbbd3a1717a57af7d211b"),
2: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
3: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
4: decodeHex("1e4b998edfb4d62fb88337a66b3af8be26159498"),
5: decodeHex("3421f02e05d71fe4bd002cbe22e68c230397821d"),
6: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
7: decodeHex("42e669233f0e826df5093abfd6998c020df2de88"),
8: decodeHex("ec84952e0c5c96cd4404122131b8f86d5ac7df7d"),
9: decodeHex("7a406f847075a86a55aa184cfe3fcef7eaff40a7"),
},
}, {
Hash: pb.HashAlgo_SHA256,
Pcrs: map[uint32][]byte{
0: decodeHex("0f35c214608d93c7a6e68ae7359b4a8be5a0e99eea9107ece427c4dea4e439cf"),
1: decodeHex("6eb40f5b6bfafcb9914d486ce59404acd24bc13a6a3c45cda3b44c9d7053d638"),
2: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
3: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
4: decodeHex("871e8343044ae4c87b402dcb94b5e49715b1b8dc1b19c43ba0801422fabb39d4"),
5: decodeHex("74be59dc8066011eade913db9a3db7978f93852c04816cba9427dd59b87042cc"),
6: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
7: decodeHex("3365d7fa2b024c852913c06e04ffbfa6ea5289f743bbf1a76f7ffdf21ed84793"),
8: decodeHex("ba18b7028111f1f193967cad3c23b5050f73061c0f119182ac0f42efd6a9159e"),
9: decodeHex("0b1e4f9ca7bc8535c4c33f0025969d7abea008aa51dcd7f7c2d1068470e4bce4"),
},
}},
ExpectedEFIAppDigests: map[pb.HashAlgo][]string{
pb.HashAlgo_SHA1: {
"d582c2803fd716f09e50c82967079ff593e1bc6b",
"e3de6a97421ba8f329d4ba55e39df80013415a23",
"03221584436f78e488cdaec3c691b7a18ff2f621",
},
pb.HashAlgo_SHA256: {
"27cce48e55b3bfb6eb6206a4cc2b53a497846496a6264495006ab28dffa5623e",
"e3e226fb8c8e3b3fdb56c706a0fbfda080f34068aef5a1889c1bfa95f04c2e72",
"dc0aca594caee03705bcfa817e7f666692d89b713815f4793b7abbc2a0e00b6c",
},
pb.HashAlgo_SHA384: {
"da419d9c92eb55b6e14f5665d81644fa163b908b1b1e317740f7a605f1734994dd90f4ea3373400c59fd7683751e30ef",
"794e6206fe520d3b0bcbfd3e14b0dc8e41f6a8c3b131faef69442a11625fde690a1b77c46dcddcb443a8d3c1e3ea669c",
"64b218ab263625b49da1172a9ab37cedbcd20d668beac1c3baac4cae640a1a7f77a07c05682b4147ec649c51243f6bbf",
},
},
}
var COS101AmdSev = eventLog{
RawLog: test.Cos101AmdSevEventLog,
Banks: []*pb.PCRs{{
Hash: pb.HashAlgo_SHA1,
Pcrs: map[uint32][]byte{
0: decodeHex("c032c3b51dbb6f96b047421512fd4b4dfde496f3"),
1: decodeHex("e3e9e1d9deacd95b289bbbd3a1717a57af7d211b"),
2: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
3: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
4: decodeHex("1ebe08ea6c45e0dfbd2aad903d2e0d3ab69fd7ad"),
5: decodeHex("1c7ca47e5c09a78a747b0e0f051cc8cad6431400"),
6: decodeHex("b2a83b0ebf2f8374299a5b2bdfc31ea955ad7236"),
7: decodeHex("6847f752ad1795c279f289e1eecf0040cd53c1d4"),
8: decodeHex("a243d82bd1fa01ae487b7ba77dd73ebb7a17800a"),
9: decodeHex("fbbb8a8f120369810e7e161504556f0080afadac"),
14: decodeHex("1ba610b2d80967338649a8f88f45810448814bfc"),
},
}, {
Hash: pb.HashAlgo_SHA256,
Pcrs: map[uint32][]byte{
0: decodeHex("0f35c214608d93c7a6e68ae7359b4a8be5a0e99eea9107ece427c4dea4e439cf"),
1: decodeHex("6eb40f5b6bfafcb9914d486ce59404acd24bc13a6a3c45cda3b44c9d7053d638"),
2: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
3: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
4: decodeHex("6d9f1a1d461cf77517e8d4c488c53f338a71c5a8e2b81ab7011c14f72cbc9a80"),
5: decodeHex("d1a1ab23a5c3d98fbacff3891bad42d8e9257d61e1f683f42c6c9fa949bf96c5"),
6: decodeHex("3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969"),
7: decodeHex("2bc6edaa921f953cec0ffb28dad4f87114886603d6a782036502d28e69d97a48"),
8: decodeHex("ebb7c847c4ade99849bcffca236d32331224a530087a7ae4cb9f7db4c2e571b5"),
9: decodeHex("b5ad662e5eb9165825ee39ad66e851a67a193e0b87b27858f25ac58afa72ac57"),
14: decodeHex("d0d95459205afae879514db7b85630f5d6b8272ed8c731bf92933dbc9fe99969"),
},
}},
ExpectedEFIAppDigests: map[pb.HashAlgo][]string{
pb.HashAlgo_SHA1: {
"dc41c297c4ed857e9b6354cad8b448995c3052ea",
"06ae09413b5107bb26aa68602ba4fe787d22f82e",
"f894ac3a351baa3a5ce4dd8d6f497eb616723461",
"f894ac3a351baa3a5ce4dd8d6f497eb616723461",
},
pb.HashAlgo_SHA256: {
"c7ac5d44444affd8d4a7c5d3dea0ce20a71e05812fc18777a428d092f78ae3ff",
"c5d3b47de11a9a2a4a15ef5cb7202d7800a10609c0dcecc46e3e963d476b76ce",
"af4161084115c9d5c1872f4473fe974b535e3a9a767688293720ac2cc6f7f9a3",
"af4161084115c9d5c1872f4473fe974b535e3a9a767688293720ac2cc6f7f9a3",
},
pb.HashAlgo_SHA384: {
"72bf185794a865eb14fcdf93a2daa8ed281c932e2a7009d8489c38056389b3f3776d755ec703c95fb9c396f79dbd52c7",
"5b38df39c7beec3bfd9c4cbd40c217bcbee190d1fa099a64c5f063d20efc3def26e48cbbd86d730c8eb4696a29759490",
"968f2f6cb5bae537adfca30942803ddcda773bae368c042258e8818788265cd0e119936c9fcdb782785154a6705c5143",
"968f2f6cb5bae537adfca30942803ddcda773bae368c042258e8818788265cd0e119936c9fcdb782785154a6705c5143",
},
},
}
func TestParseEventLogs(t *testing.T) {
sbatErrorStr := "asn1: structure error: tags don't match (16 vs {class:0 tag:24 length:10 isCompound:true})"
logs := []struct {
eventLog
name string
Bootloader
// This field handles known issues with event log parsing or bad event
// logs.
// Set to nil when the event log has no known issues.
errorSubstrs []string
}{
{Debian10GCE, "Debian10GCE", UnsupportedLoader, nil},
{Rhel8GCE, "Rhel8GCE", GRUB, nil},
{UbuntuAmdSevGCE, "UbuntuAmdSevGCE", GRUB, nil},
// TODO: remove once the fix is pulled in
// https://github.com/google/go-attestation/pull/222
{Ubuntu2104NoDbxGCE, "Ubuntu2104NoDbxGCE", GRUB, []string{sbatErrorStr}},
{Ubuntu2104NoSecureBootGCE, "Ubuntu2104NoSecureBootGCE", GRUB, []string{sbatErrorStr}},
// This event log has a SecureBoot variable length of 0.
{ArchLinuxWorkstation, "ArchLinuxWorkstation", UnsupportedLoader, archLinuxKnownParsingFailures},
{COS85AmdSev, "COS85AmdSev", GRUB, nil},
{COS93AmdSev, "COS93AmdSev", GRUB, nil},
{COS101AmdSev, "COS101AmdSev", GRUB, nil},
{Ubuntu2404AmdSevSnp, "Ubuntu2404AmdSevSnp", GRUB, nil},
}
for _, log := range logs {
rawLog := log.RawLog
for _, bank := range log.Banks {
hashName := pb.HashAlgo_name[int32(bank.Hash)]
subtestName := fmt.Sprintf("%s-%s", log.name, hashName)
t.Run(subtestName, func(t *testing.T) {
if _, err := parsePCClientEventLog(rawLog, bank, log.Bootloader); err != nil {
gErr, ok := err.(*GroupedError)
if !ok {
t.Errorf("ParseMachineState should return a GroupedError")
}
if len(log.errorSubstrs) == 0 {
t.Errorf("expected no errors in GroupedError, received (%v)", err)
}
if !gErr.containsKnownSubstrings(log.errorSubstrs) {
t.Errorf("failed to parse and replay log: %v", err)
}
}
})
}
}
}
func TestParseMachineStateReplayFail(t *testing.T) {
badPcrs := pb.PCRs{Hash: pb.HashAlgo_SHA1}
pcrMap := make(map[uint32][]byte)
pcrMap[0] = []byte{0, 0, 0, 0}
badPcrs.Pcrs = pcrMap
_, err := parsePCClientEventLog(Debian10GCE.RawLog, &badPcrs, UnsupportedLoader)
if err == nil {
t.Errorf("ParseMachineState should fail to replay the event log")
}
_, ok := err.(*GroupedError)
if !ok {
t.Errorf("ParseMachineState should return a GroupedError")
}
}
func TestSystemParseEventLog(t *testing.T) {
rwc := test.GetTPM(t)
defer client.CheckedClose(t, rwc)
evtLog, err := client.GetEventLog(rwc)
if err != nil {
t.Fatalf("failed to retrieve Event Log: %v", err)
}
sel := client.FullPcrSel(tpm2.AlgSHA1)
pcrs, err := client.ReadPCRs(rwc, sel)
if err != nil {
t.Fatalf("failed to read PCRs: %v", err)
}
if _, err = parsePCClientEventLog(evtLog, pcrs, UnsupportedLoader); err != nil {
t.Errorf("failed to parse MachineState: %v", err)
}
}
func TestEmptyEventlog(t *testing.T) {
emptyLog := []byte{}
emptyState := &attestpb.MachineState{
Hash: pb.HashAlgo_SHA1,
Platform: &attestpb.PlatformState{Firmware: &attestpb.PlatformState_ScrtmVersionId{}},
SecureBoot: &attestpb.SecureBootState{},
}
// SHA-1 PCR data consisting of all zero digests (i.e. the reset state)
zeroDigest := make([]byte, crypto.SHA1.Size())
zeroPCRs := &pb.PCRs{Hash: pb.HashAlgo_SHA1, Pcrs: make(map[uint32][]byte)}
for i := uint32(0); i < 24; i++ {
zeroPCRs.Pcrs[i] = zeroDigest
}
// For our "Real" PCR data, use the simulated TPM (which has extended events)
rwc := test.GetTPM(t)
defer client.CheckedClose(t, rwc)
realPCRs, err := client.ReadPCRs(rwc, client.FullPcrSel(tpm2.AlgSHA1))
if err != nil {
t.Fatalf("failed to read PCRs: %v", err)
}
cases := []struct {
name string
pcrs *pb.PCRs
}{
{"Empty", &pb.PCRs{Hash: pb.HashAlgo_SHA1}},
{"AllZero", zeroPCRs},
{"Real", realPCRs},
}
for _, c := range cases {
t.Run(c.name, func(t *testing.T) {
state, err := parsePCClientEventLog(emptyLog, c.pcrs, UnsupportedLoader)
if err != nil {
t.Errorf("parsing empty eventlog: %v", err)
}
if diff := cmp.Diff(state, emptyState, protocmp.Transform(), protocmp.IgnoreEmptyMessages()); diff != "" {
t.Errorf("unexpected non-empty MachineState:\n%v", diff)
}
})
}
}
func TestParseSecureBootState(t *testing.T) {
for _, bank := range UbuntuAmdSevGCE.Banks {
msState, err := parsePCClientEventLog(UbuntuAmdSevGCE.RawLog, bank, UnsupportedLoader)
if err != nil {
t.Errorf("failed to parse and replay log: %v", err)
}
containsWinProdPCA := false
contains3PUEFI := false
if len(msState.GetSecureBoot().GetDb().GetHashes()) != 0 {
t.Error("found hashes in db")
}
for _, cert := range msState.GetSecureBoot().GetDb().GetCerts() {
switch c := cert.GetRepresentation().(type) {
case *attestpb.Certificate_WellKnown:
if c.WellKnown == attestpb.WellKnownCertificate_UNKNOWN {
t.Error(("found WellKnownCertificate_UNKNOWN in db"))
}
if c.WellKnown == attestpb.WellKnownCertificate_MS_THIRD_PARTY_UEFI_CA_2011 {
contains3PUEFI = true
} else if c.WellKnown == attestpb.WellKnownCertificate_MS_WINDOWS_PROD_PCA_2011 {
containsWinProdPCA = true
}
}
}
if !contains3PUEFI || !containsWinProdPCA {
t.Error("expected to see both WinProdPCA and ThirdPartyUEFI certs")
}
if len(msState.GetSecureBoot().GetPk().GetHashes()) != 0 {
t.Error("found hashes in pk")
}
pkCerts := msState.GetSecureBoot().GetPk().GetCerts()
if len(pkCerts) != 1 {
t.Errorf("expected to see exactly one cert in pk, but found %d", len(pkCerts))
} else {
switch c := pkCerts[0].GetRepresentation().(type) {
case *attestpb.Certificate_WellKnown:
if c.WellKnown != attestpb.WellKnownCertificate_GCE_DEFAULT_PK {
t.Error("expected to see WellKnownCertificate_GCE_DEFAULT_PK in pk got a different well known cert")
}
default:
t.Error("expected to see WellKnownCertificate_GCE_DEFAULT_PK in pk")
}
}
if len(msState.GetSecureBoot().GetKek().GetHashes()) != 0 {
t.Error("found hashes in kek")
}
kekCerts := msState.GetSecureBoot().GetKek().GetCerts()
if len(kekCerts) != 1 {
t.Errorf("expected to see exactly one cert in kek, but found %d", len(kekCerts))
} else {
switch c := kekCerts[0].GetRepresentation().(type) {
case *attestpb.Certificate_WellKnown:
if c.WellKnown != attestpb.WellKnownCertificate_MS_THIRD_PARTY_KEK_CA_2011 {
t.Error("expected to see WellKnownCertificate_MS_THIRD_PARTY_KEK_CA_2011 in kek got a different well known cert")
}
default:
t.Error("expected to see WellKnownCertificate_MS_THIRD_PARTY_KEK_CA_2011 in kek")
}
}
}
}
func convertToPCRBank(t *testing.T, pcrs *pb.PCRs) register.PCRBank {
pcrBank := register.PCRBank{TCGHashAlgo: state.HashAlgo(pcrs.Hash)}
digestAlg, err := pcrBank.TCGHashAlgo.CryptoHash()
if err != nil {
t.Fatal(err)
}
for ind, dgst := range pcrs.GetPcrs() {
pcrBank.PCRs = append(pcrBank.PCRs, register.PCR{
Index: int(ind),
Digest: dgst,
DigestAlg: digestAlg},
)
}
return pcrBank
}
func getRTMRBank(t *testing.T, fakeRTMR *fakertmr.RtmrSubsystem) register.RTMRBank {
rtmrBank := register.RTMRBank{}
// RTMR 0 to 3
for i := 0; i < 4; i++ {
digest, err := configfstsmrtmr.GetDigest(fakeRTMR, i)
if err != nil {
t.Fatal(err)
}
rtmrBank.RTMRs = append(rtmrBank.RTMRs, register.RTMR{Index: i, Digest: digest.Digest})
}
return rtmrBank
}
func TestParsingRTMREventlog(t *testing.T) {
coscel := &cel.CEL{}
emptyCosState := attestpb.ContainerState{}
emptyHealthMonitoringState := attestpb.HealthMonitoringState{}
var buf bytes.Buffer
// First, encode an empty CEL and try to parse it.
if err := coscel.EncodeCEL(&buf); err != nil {
t.Fatal(err)
}
fakeRTMR := fakertmr.CreateRtmrSubsystem(t.TempDir())
rtmrBank := getRTMRBank(t, fakeRTMR)
acosState, err := ParseCosCELRTMR(buf.Bytes(), rtmrBank)
if err != nil {
t.Errorf("expecting no error from ParseCosCELRTMR(), but get %v", err)
}
if diff := cmp.Diff(acosState.Container, &emptyCosState, protocmp.Transform()); diff != "" {
t.Errorf("unexpected container state difference:\n%v", diff)
}
if diff := cmp.Diff(acosState.HealthMonitoring, &emptyHealthMonitoringState, protocmp.Transform()); diff != "" {
t.Errorf("unexpected health monitoring difference:\n%v", diff)
}
if acosState.HealthMonitoring.MemoryEnabled != nil {
t.Errorf("unexpected MemoryEnabled state, want nil, but got %v", *acosState.HealthMonitoring.MemoryEnabled)
}
// add events
testCELEvents := []struct {
cosNestedEventType cel.CosType
register int
eventPayload []byte
}{
{cel.ImageRefType, cel.CosRTMR, []byte("docker.io/bazel/experimental/test:latest")},
{cel.ImageDigestType, cel.CosRTMR, []byte("sha256:781d8dfdd92118436bd914442c8339e653b83f6bf3c1a7a98efcfb7c4fed7483")},
{cel.RestartPolicyType, cel.CosRTMR, []byte(attestpb.RestartPolicy_Always.String())},
{cel.ImageIDType, cel.CosRTMR, []byte("sha256:5DF4A1AC347DCF8CF5E9D0ABC04B04DB847D1B88D3B1CC1006F0ACB68E5A1F4B")},
{cel.EnvVarType, cel.CosRTMR, []byte("foo=bar")},
{cel.EnvVarType, cel.CosRTMR, []byte("bar=baz")},
{cel.EnvVarType, cel.CosRTMR, []byte("baz=foo=bar")},
{cel.EnvVarType, cel.CosRTMR, []byte("empty=")},
{cel.ArgType, cel.CosRTMR, []byte("--x")},
{cel.ArgType, cel.CosRTMR, []byte("--y")},
{cel.ArgType, cel.CosRTMR, []byte("")},
{cel.MemoryMonitorType, cel.CosRTMR, []byte{1}},
}
expectedEnvVars := make(map[string]string)
expectedEnvVars["foo"] = "bar"
expectedEnvVars["bar"] = "baz"
expectedEnvVars["baz"] = "foo=bar"
expectedEnvVars["empty"] = ""
wantContainerState := attestpb.ContainerState{
ImageReference: string(testCELEvents[0].eventPayload),
ImageDigest: string(testCELEvents[1].eventPayload),
RestartPolicy: attestpb.RestartPolicy_Always,
ImageId: string(testCELEvents[3].eventPayload),
EnvVars: expectedEnvVars,
Args: []string{string(testCELEvents[8].eventPayload), string(testCELEvents[9].eventPayload), string(testCELEvents[10].eventPayload)},
}
enabled := true
wantHealthMonitoringState := attestpb.HealthMonitoringState{
MemoryEnabled: &enabled,
}
for _, testEvent := range testCELEvents {
cosEvent := cel.CosTlv{EventType: testEvent.cosNestedEventType, EventContent: testEvent.eventPayload}
if err := coscel.AppendEventRTMR(fakeRTMR, testEvent.register, cosEvent); err != nil {
t.Fatal(err)
}
}
buf = bytes.Buffer{}
if err := coscel.EncodeCEL(&buf); err != nil {
t.Fatal(err)
}
rtmrBank = getRTMRBank(t, fakeRTMR)
if acosState, err := ParseCosCELRTMR(buf.Bytes(), rtmrBank); err != nil {
t.Errorf("expecting no error from ParseCosCELRTMR(), but get %v", err)
} else {
if diff := cmp.Diff(acosState.Container, &wantContainerState, protocmp.Transform()); diff != "" {
t.Errorf("unexpected container state difference:\n%v", diff)
}
if diff := cmp.Diff(acosState.HealthMonitoring, &wantHealthMonitoringState, protocmp.Transform()); diff != "" {
t.Errorf("unexpected health monitoring state difference:\n%v", diff)
}
}
// Faking PCR with RTMR should fail
imposterPcrBank := map[uint32][]byte{}
imposterPcrBank[1] = rtmrBank.RTMRs[0].Digest
imposterPcrBank[2] = rtmrBank.RTMRs[1].Digest
imposterPcrBank[3] = rtmrBank.RTMRs[2].Digest
imposterPcrBank[4] = rtmrBank.RTMRs[3].Digest
imposterPcrs := &pb.PCRs{Hash: pb.HashAlgo_SHA384, Pcrs: imposterPcrBank}
hackedPCRBank := convertToPCRBank(t, imposterPcrs)
if _, err = ParseCosCELPCR(buf.Bytes(), hackedPCRBank); err == nil {
t.Errorf("expecting error from ParseCosCELPCR() when using RTMR CEL Log, but get nil")
}
}
func TestParsingCELEventLog(t *testing.T) {
test.SkipForRealTPM(t)
tpm := test.GetTPM(t)
defer client.CheckedClose(t, tpm)
coscel := &cel.CEL{}
emptyCosState := attestpb.ContainerState{}
emptyHealthMonitoringState := attestpb.HealthMonitoringState{}
var buf bytes.Buffer
// First, encode an empty CEL and try to parse it.
if err := coscel.EncodeCEL(&buf); err != nil {
t.Fatal(err)
}
banks, err := client.ReadAllPCRs(tpm)
if err != nil {
t.Fatal(err)
}
implementedHashes := []crypto.Hash{}
// get all implmented hash algo in the TPM
for _, h := range banks {
hsh, err := tpm2.Algorithm(h.Hash).Hash()
if err != nil {
t.Fatal(err)
}
implementedHashes = append(implementedHashes, crypto.Hash(hsh))
}
for _, bank := range banks {
pcrBank := convertToPCRBank(t, bank)
// pcrs can have any value here, since the coscel has no records, the replay should always success.
acosState, err := ParseCosCELPCR(buf.Bytes(), pcrBank)
if err != nil {
t.Errorf("expecting no error from ParseCosCELPCR(), but get %v", err)
}
if diff := cmp.Diff(acosState.Container, &emptyCosState, protocmp.Transform()); diff != "" {
t.Errorf("unexpected container state difference:\n%v", diff)
}
if diff := cmp.Diff(acosState.HealthMonitoring, &emptyHealthMonitoringState, protocmp.Transform()); diff != "" {
t.Errorf("unexpected health monitoring difference:\n%v", diff)
}
if acosState.HealthMonitoring.MemoryEnabled != nil {
t.Errorf("unexpected MemoryEnabled state, want nil, but got %v", *acosState.HealthMonitoring.MemoryEnabled)
}
}
// Secondly, append some real COS events to the CEL. This time we should get content in the CosState.
testCELEvents := []struct {
cosNestedEventType cel.CosType
pcr int
eventPayload []byte
}{
{cel.ImageRefType, cel.CosEventPCR, []byte("docker.io/bazel/experimental/test:latest")},
{cel.ImageDigestType, cel.CosEventPCR, []byte("sha256:781d8dfdd92118436bd914442c8339e653b83f6bf3c1a7a98efcfb7c4fed7483")},
{cel.RestartPolicyType, cel.CosEventPCR, []byte(attestpb.RestartPolicy_Always.String())},
{cel.ImageIDType, cel.CosEventPCR, []byte("sha256:5DF4A1AC347DCF8CF5E9D0ABC04B04DB847D1B88D3B1CC1006F0ACB68E5A1F4B")},
{cel.EnvVarType, cel.CosEventPCR, []byte("foo=bar")},
{cel.EnvVarType, cel.CosEventPCR, []byte("bar=baz")},
{cel.EnvVarType, cel.CosEventPCR, []byte("baz=foo=bar")},
{cel.EnvVarType, cel.CosEventPCR, []byte("empty=")},
{cel.ArgType, cel.CosEventPCR, []byte("--x")},
{cel.ArgType, cel.CosEventPCR, []byte("--y")},
{cel.ArgType, cel.CosEventPCR, []byte("")},
{cel.MemoryMonitorType, cel.CosEventPCR, []byte{1}},
}
expectedEnvVars := make(map[string]string)
expectedEnvVars["foo"] = "bar"
expectedEnvVars["bar"] = "baz"
expectedEnvVars["baz"] = "foo=bar"
expectedEnvVars["empty"] = ""
wantContainerState := attestpb.ContainerState{
ImageReference: string(testCELEvents[0].eventPayload),
ImageDigest: string(testCELEvents[1].eventPayload),
RestartPolicy: attestpb.RestartPolicy_Always,
ImageId: string(testCELEvents[3].eventPayload),
EnvVars: expectedEnvVars,
Args: []string{string(testCELEvents[8].eventPayload), string(testCELEvents[9].eventPayload), string(testCELEvents[10].eventPayload)},
}
enabled := true
wantHealthMonitoringState := attestpb.HealthMonitoringState{
MemoryEnabled: &enabled,
}
for _, testEvent := range testCELEvents {
cosEvent := cel.CosTlv{EventType: testEvent.cosNestedEventType, EventContent: testEvent.eventPayload}
if err := coscel.AppendEventPCR(tpm, testEvent.pcr, implementedHashes, cosEvent); err != nil {
t.Fatal(err)
}
}
buf = bytes.Buffer{}
if err := coscel.EncodeCEL(&buf); err != nil {
t.Fatal(err)
}
banks, err = client.ReadAllPCRs(tpm)
if err != nil {
t.Fatal(err)
}
for _, bank := range banks {
pcrBank := convertToPCRBank(t, bank)
if acosState, err := ParseCosCELPCR(buf.Bytes(), pcrBank); err != nil {
t.Errorf("expecting no error from ParseCosCELPCR(), but get %v", err)
} else {
if diff := cmp.Diff(acosState.Container, &wantContainerState, protocmp.Transform()); diff != "" {
t.Errorf("unexpected container state difference:\n%v", diff)
}
if diff := cmp.Diff(acosState.HealthMonitoring, &wantHealthMonitoringState, protocmp.Transform()); diff != "" {
t.Errorf("unexpected health monitoring state difference:\n%v", diff)
}
}
}
// Thirdly, append a random non-COS event, encode and try to parse it.
// Because there is no COS TLV event, attestation should fail as we do not
// understand the content type.
event, err := generateNonCosCelEvent(implementedHashes)
if err != nil {
t.Fatal(err)
}
coscel.Records = append(coscel.Records, event)
buf = bytes.Buffer{}
if err := coscel.EncodeCEL(&buf); err != nil {
t.Fatal(err)
}
// extend digests to the PCR
for _, hash := range implementedHashes {
algo, err := tpm2.HashToAlgorithm(hash)
if err != nil {
t.Fatal(err)
}
if err := tpm2.PCRExtend(tpm, tpmutil.Handle(cel.CosEventPCR), algo, event.Digests[hash], ""); err != nil {
t.Fatal(err)
}
}
banks, err = client.ReadAllPCRs(tpm)