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Update ValidateCertificateChain() To Allow Certificate Chain Validati…
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…on without Intermediate Certificate. (#22504)

Using this function to validate CD signing certificates added to the CD Trust Store.
Added new unit-test cases.
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@emargolis @pull
emargolis authored and pull[bot] committed Nov 14, 2023
1 parent e98e9fc commit baa06ca
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Showing 7 changed files with 161 additions and 27 deletions.
63 changes: 60 additions & 3 deletions src/credentials/attestation_verifier/DefaultDeviceAttestationVerifier.cpp
View file
Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,10 @@ static const ByteSpan kTestPaaRoots[] = {
// used to verify any in-SDK development CDs. The associated keypair to do actual signing is in
// `credentials/test/certification-declaration/Chip-Test-CD-Signing-Key.pem`.
//
// Note that this certificate is a self signed certificate and doesn't chain up to the CSA trusted root.
// This CD Signing certificate can only be used to sign CDs for testing/development purposes
// and should never be used in production devices.
//
// -----BEGIN CERTIFICATE-----
// MIIBszCCAVqgAwIBAgIIRdrzneR6oI8wCgYIKoZIzj0EAwIwKzEpMCcGA1UEAwwg
// TWF0dGVyIFRlc3QgQ0QgU2lnbmluZyBBdXRob3JpdHkwIBcNMjEwNjI4MTQyMzQz
Expand All @@ -77,6 +81,50 @@ constexpr uint8_t gTestCdPubkeyBytes[65] = { 0x04, 0x3c, 0x39, 0x89, 0x22, 0x45,
constexpr uint8_t gTestCdPubkeyKid[20] = { 0x62, 0xfa, 0x82, 0x33, 0x59, 0xac, 0xfa, 0xa9, 0x96, 0x3e,
0x1c, 0xfa, 0x14, 0x0a, 0xdd, 0xf5, 0x04, 0xf3, 0x71, 0x60 };

// Official CSA "Matter Certification and Testing CA"
//
// -----BEGIN CERTIFICATE-----
// MIICATCCAaegAwIBAgIHY3Nhcm9vdDAKBggqhkjOPQQDAjBSMQwwCgYDVQQKDAND
// U0ExLDAqBgNVBAMMI01hdHRlciBDZXJ0aWZpY2F0aW9uIGFuZCBUZXN0aW5nIENB
// MRQwEgYKKwYBBAGConwCAQwEQzVBMDAgFw0yMjA3MDcxOTI4MDRaGA8yMTIyMDYx
// MzE5MjgwNFowUjEMMAoGA1UECgwDQ1NBMSwwKgYDVQQDDCNNYXR0ZXIgQ2VydGlm
// aWNhdGlvbiBhbmQgVGVzdGluZyBDQTEUMBIGCisGAQQBgqJ8AgEMBEM1QTAwWTAT
// BgcqhkjOPQIBBggqhkjOPQMBBwNCAAQ4SjrDql2+y3IP5iEdPK1IYm/3EaCkkp+t
// 2GD44nf/wN4fPrYzejSEe1o6BW6ocQ6Td+7t7iUXA/3ZNQEly45Io2YwZDASBgNV
// HRMBAf8ECDAGAQH/AgEBMA4GA1UdDwEB/wQEAwIBBjAdBgNVHQ4EFgQUl+Rp0MUE
// FMJvxwH3fpR3OQmN9qUwHwYDVR0jBBgwFoAUl+Rp0MUEFMJvxwH3fpR3OQmN9qUw
// CgYIKoZIzj0EAwIDSAAwRQIgearlB0fCJ49UoJ6xwKPdlPEopCOL9jVCviODEleI
// +mQCIQDvvDCKi7kvj4R4BoFS4BVZGCk4zJ84W4tfTTfu89lRbQ==
// -----END CERTIFICATE-----
//
constexpr uint8_t gCdRootCert[517] = {
0x30, 0x82, 0x02, 0x01, 0x30, 0x82, 0x01, 0xa7, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x07, 0x63, 0x73, 0x61, 0x72, 0x6f, 0x6f,
0x74, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x30, 0x52, 0x31, 0x0c, 0x30, 0x0a, 0x06, 0x03,
0x55, 0x04, 0x0a, 0x0c, 0x03, 0x43, 0x53, 0x41, 0x31, 0x2c, 0x30, 0x2a, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x23, 0x4d, 0x61,
0x74, 0x74, 0x65, 0x72, 0x20, 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x61, 0x6e,
0x64, 0x20, 0x54, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x67, 0x20, 0x43, 0x41, 0x31, 0x14, 0x30, 0x12, 0x06, 0x0a, 0x2b, 0x06, 0x01,
0x04, 0x01, 0x82, 0xa2, 0x7c, 0x02, 0x01, 0x0c, 0x04, 0x43, 0x35, 0x41, 0x30, 0x30, 0x20, 0x17, 0x0d, 0x32, 0x32, 0x30, 0x37,
0x30, 0x37, 0x31, 0x39, 0x32, 0x38, 0x30, 0x34, 0x5a, 0x18, 0x0f, 0x32, 0x31, 0x32, 0x32, 0x30, 0x36, 0x31, 0x33, 0x31, 0x39,
0x32, 0x38, 0x30, 0x34, 0x5a, 0x30, 0x52, 0x31, 0x0c, 0x30, 0x0a, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x03, 0x43, 0x53, 0x41,
0x31, 0x2c, 0x30, 0x2a, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x23, 0x4d, 0x61, 0x74, 0x74, 0x65, 0x72, 0x20, 0x43, 0x65, 0x72,
0x74, 0x69, 0x66, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x61, 0x6e, 0x64, 0x20, 0x54, 0x65, 0x73, 0x74, 0x69, 0x6e,
0x67, 0x20, 0x43, 0x41, 0x31, 0x14, 0x30, 0x12, 0x06, 0x0a, 0x2b, 0x06, 0x01, 0x04, 0x01, 0x82, 0xa2, 0x7c, 0x02, 0x01, 0x0c,
0x04, 0x43, 0x35, 0x41, 0x30, 0x30, 0x59, 0x30, 0x13, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x02, 0x01, 0x06, 0x08, 0x2a,
0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07, 0x03, 0x42, 0x00, 0x04, 0x38, 0x4a, 0x3a, 0xc3, 0xaa, 0x5d, 0xbe, 0xcb, 0x72, 0x0f,
0xe6, 0x21, 0x1d, 0x3c, 0xad, 0x48, 0x62, 0x6f, 0xf7, 0x11, 0xa0, 0xa4, 0x92, 0x9f, 0xad, 0xd8, 0x60, 0xf8, 0xe2, 0x77, 0xff,
0xc0, 0xde, 0x1f, 0x3e, 0xb6, 0x33, 0x7a, 0x34, 0x84, 0x7b, 0x5a, 0x3a, 0x05, 0x6e, 0xa8, 0x71, 0x0e, 0x93, 0x77, 0xee, 0xed,
0xee, 0x25, 0x17, 0x03, 0xfd, 0xd9, 0x35, 0x01, 0x25, 0xcb, 0x8e, 0x48, 0xa3, 0x66, 0x30, 0x64, 0x30, 0x12, 0x06, 0x03, 0x55,
0x1d, 0x13, 0x01, 0x01, 0xff, 0x04, 0x08, 0x30, 0x06, 0x01, 0x01, 0xff, 0x02, 0x01, 0x01, 0x30, 0x0e, 0x06, 0x03, 0x55, 0x1d,
0x0f, 0x01, 0x01, 0xff, 0x04, 0x04, 0x03, 0x02, 0x01, 0x06, 0x30, 0x1d, 0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04, 0x16, 0x04, 0x14,
0x97, 0xe4, 0x69, 0xd0, 0xc5, 0x04, 0x14, 0xc2, 0x6f, 0xc7, 0x01, 0xf7, 0x7e, 0x94, 0x77, 0x39, 0x09, 0x8d, 0xf6, 0xa5, 0x30,
0x1f, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04, 0x18, 0x30, 0x16, 0x80, 0x14, 0x97, 0xe4, 0x69, 0xd0, 0xc5, 0x04, 0x14, 0xc2, 0x6f,
0xc7, 0x01, 0xf7, 0x7e, 0x94, 0x77, 0x39, 0x09, 0x8d, 0xf6, 0xa5, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04,
0x03, 0x02, 0x03, 0x48, 0x00, 0x30, 0x45, 0x02, 0x20, 0x79, 0xaa, 0xe5, 0x07, 0x47, 0xc2, 0x27, 0x8f, 0x54, 0xa0, 0x9e, 0xb1,
0xc0, 0xa3, 0xdd, 0x94, 0xf1, 0x28, 0xa4, 0x23, 0x8b, 0xf6, 0x35, 0x42, 0xbe, 0x23, 0x83, 0x12, 0x57, 0x88, 0xfa, 0x64, 0x02,
0x21, 0x00, 0xef, 0xbc, 0x30, 0x8a, 0x8b, 0xb9, 0x2f, 0x8f, 0x84, 0x78, 0x06, 0x81, 0x52, 0xe0, 0x15, 0x59, 0x18, 0x29, 0x38,
0xcc, 0x9f, 0x38, 0x5b, 0x8b, 0x5f, 0x4d, 0x37, 0xee, 0xf3, 0xd9, 0x51, 0x6d
};

// Official CD "Signing Key 001"
//
// -----BEGIN CERTIFICATE-----
Expand Down Expand Up @@ -450,15 +498,24 @@ CHIP_ERROR CsaCdKeysTrustStore::AddTrustedKey(const ByteSpan & kid, const Crypto

CHIP_ERROR CsaCdKeysTrustStore::AddTrustedKey(const ByteSpan & derCertBytes)
{
// TODO: Verify cert against CD root of trust (i.e. verify signatures). To do so,
// we are missing primitives to validate X.509 paths of total length 2.

uint8_t kidBuf[Crypto::kSubjectKeyIdentifierLength] = { 0 };
MutableByteSpan kidSpan{ kidBuf };
P256PublicKey pubKey;

VerifyOrReturnError(CHIP_NO_ERROR == Crypto::ExtractSKIDFromX509Cert(derCertBytes, kidSpan), CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrReturnError(CHIP_NO_ERROR == Crypto::ExtractPubkeyFromX509Cert(derCertBytes, pubKey), CHIP_ERROR_INVALID_ARGUMENT);

if (!IsCdTestKey(kidSpan))
{
// Verify cert against CSA CD root of trust.
CertificateChainValidationResult chainValidationResult;
VerifyOrReturnError(CHIP_NO_ERROR ==
ValidateCertificateChain(gCdRootCert, sizeof(gCdRootCert), nullptr, 0, derCertBytes.data(),
derCertBytes.size(), chainValidationResult),
CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrReturnError(chainValidationResult == CertificateChainValidationResult::kSuccess, CHIP_ERROR_INVALID_ARGUMENT);
}

return AddTrustedKey(kidSpan, pubKey);
}

Expand Down
64 changes: 64 additions & 0 deletions src/credentials/tests/TestCertificationDeclaration.cpp
View file
Original file line number Diff line number Diff line change
Expand Up @@ -181,6 +181,32 @@ static constexpr uint8_t gUntrustedCd[333] = {
0x1e, 0xf5, 0x68, 0x00, 0x23, 0x86, 0xba, 0x39, 0xe7, 0xab, 0x2d, 0xe5, 0x71, 0xe5, 0x36, 0x4e, 0xd0, 0x38,
};

static constexpr uint8_t gUntrustedCdCert[481] = {
0x30, 0x82, 0x01, 0xdd, 0x30, 0x82, 0x01, 0x83, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x14, 0x4e, 0x84, 0xea, 0x0a, 0x68, 0x5b,
0xbe, 0xe2, 0xfb, 0x2d, 0xed, 0x76, 0xaf, 0xa1, 0x92, 0xc4, 0x3a, 0xce, 0x9b, 0x03, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48,
0xce, 0x3d, 0x04, 0x03, 0x02, 0x30, 0x44, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x55, 0x53, 0x31,
0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x08, 0x0c, 0x02, 0x43, 0x41, 0x31, 0x0d, 0x30, 0x0b, 0x06, 0x03, 0x55, 0x04, 0x0a,
0x0c, 0x04, 0x54, 0x65, 0x73, 0x74, 0x31, 0x19, 0x30, 0x17, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x10, 0x55, 0x6e, 0x74, 0x72,
0x75, 0x73, 0x65, 0x64, 0x20, 0x43, 0x44, 0x20, 0x63, 0x65, 0x72, 0x74, 0x30, 0x1e, 0x17, 0x0d, 0x32, 0x32, 0x30, 0x39, 0x30,
0x36, 0x31, 0x33, 0x34, 0x39, 0x31, 0x35, 0x5a, 0x17, 0x0d, 0x33, 0x32, 0x30, 0x39, 0x30, 0x33, 0x31, 0x33, 0x34, 0x39, 0x31,
0x35, 0x5a, 0x30, 0x44, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x55, 0x53, 0x31, 0x0b, 0x30, 0x09,
0x06, 0x03, 0x55, 0x04, 0x08, 0x0c, 0x02, 0x43, 0x41, 0x31, 0x0d, 0x30, 0x0b, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x04, 0x54,
0x65, 0x73, 0x74, 0x31, 0x19, 0x30, 0x17, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x10, 0x55, 0x6e, 0x74, 0x72, 0x75, 0x73, 0x65,
0x64, 0x20, 0x43, 0x44, 0x20, 0x63, 0x65, 0x72, 0x74, 0x30, 0x59, 0x30, 0x13, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x02,
0x01, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07, 0x03, 0x42, 0x00, 0x04, 0xbc, 0x87, 0x13, 0x3a, 0x19, 0x16,
0x87, 0x04, 0x34, 0x1b, 0x78, 0xc5, 0x70, 0x41, 0x21, 0x14, 0xbb, 0xe5, 0x3f, 0x62, 0x45, 0x70, 0xe8, 0xf2, 0x37, 0x78, 0x77,
0x1a, 0xf3, 0x5c, 0xd8, 0x04, 0x21, 0xc8, 0x2d, 0x40, 0x7f, 0xee, 0x37, 0xf5, 0xa5, 0x9f, 0x17, 0x26, 0x33, 0x00, 0x4d, 0xf7,
0x66, 0xa3, 0x3a, 0x50, 0x75, 0x9f, 0xcf, 0xd2, 0xb2, 0x1b, 0x5e, 0x58, 0x75, 0x08, 0x82, 0x3e, 0xa3, 0x53, 0x30, 0x51, 0x30,
0x1d, 0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04, 0x16, 0x04, 0x14, 0x75, 0xe3, 0x06, 0x0e, 0x0f, 0xce, 0x28, 0x69, 0x5d, 0x19, 0x75,
0x43, 0x32, 0xbb, 0xc7, 0x9b, 0xeb, 0x3d, 0x60, 0x6c, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04, 0x18, 0x30, 0x16, 0x80,
0x14, 0x75, 0xe3, 0x06, 0x0e, 0x0f, 0xce, 0x28, 0x69, 0x5d, 0x19, 0x75, 0x43, 0x32, 0xbb, 0xc7, 0x9b, 0xeb, 0x3d, 0x60, 0x6c,
0x30, 0x0f, 0x06, 0x03, 0x55, 0x1d, 0x13, 0x01, 0x01, 0xff, 0x04, 0x05, 0x30, 0x03, 0x01, 0x01, 0xff, 0x30, 0x0a, 0x06, 0x08,
0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x03, 0x48, 0x00, 0x30, 0x45, 0x02, 0x21, 0x00, 0x83, 0xdd, 0x0c, 0x66, 0xa2,
0xe3, 0x10, 0x63, 0xa1, 0x17, 0x35, 0x30, 0x13, 0x21, 0xc6, 0x9b, 0x6f, 0x4d, 0x29, 0x94, 0x06, 0xd4, 0xd7, 0xc1, 0x14, 0x01,
0x6d, 0x05, 0x59, 0xbc, 0x40, 0xb2, 0x02, 0x20, 0x76, 0x7f, 0x58, 0x71, 0x12, 0xb4, 0x2e, 0x33, 0x07, 0xed, 0x84, 0x87, 0x06,
0xd4, 0x77, 0xb2, 0xf2, 0xae, 0x65, 0xbd, 0x9d, 0xfe, 0x2f, 0xf8, 0x38, 0xfc, 0x47, 0x45, 0x4f, 0x0c, 0x30, 0xfd
};

static constexpr uint8_t gUntrustedCdVerifyingKeyBytes[65] = { 0x04, 0xbc, 0x87, 0x13, 0x3a, 0x19, 0x16, 0x87, 0x04, 0x34, 0x1b,
0x78, 0xc5, 0x70, 0x41, 0x21, 0x14, 0xbb, 0xe5, 0x3f, 0x62, 0x45,
0x70, 0xe8, 0xf2, 0x37, 0x78, 0x77, 0x1a, 0xf3, 0x5c, 0xd8, 0x04,
Expand All @@ -192,6 +218,34 @@ static const P256PublicKey gUntrustedCdVerifyingKey(gUntrustedCdVerifyingKeyByte
static constexpr uint8_t gUntrustedCdKid[20] = { 0x75, 0xE3, 0x06, 0x0E, 0x0F, 0xCE, 0x28, 0x69, 0x5D, 0x19,
0x75, 0x43, 0x32, 0xBB, 0xC7, 0x9B, 0xEB, 0x3D, 0x60, 0x6C };

static constexpr uint8_t gCdSigningCert001[524] = {
0x30, 0x82, 0x02, 0x08, 0x30, 0x82, 0x01, 0xad, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x07, 0x63, 0x73, 0x61, 0x63, 0x64, 0x73,
0x31, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x30, 0x52, 0x31, 0x0c, 0x30, 0x0a, 0x06, 0x03,
0x55, 0x04, 0x0a, 0x0c, 0x03, 0x43, 0x53, 0x41, 0x31, 0x2c, 0x30, 0x2a, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x23, 0x4d, 0x61,
0x74, 0x74, 0x65, 0x72, 0x20, 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x61, 0x6e,
0x64, 0x20, 0x54, 0x65, 0x73, 0x74, 0x69, 0x6e, 0x67, 0x20, 0x43, 0x41, 0x31, 0x14, 0x30, 0x12, 0x06, 0x0a, 0x2b, 0x06, 0x01,
0x04, 0x01, 0x82, 0xa2, 0x7c, 0x02, 0x01, 0x0c, 0x04, 0x43, 0x35, 0x41, 0x30, 0x30, 0x20, 0x17, 0x0d, 0x32, 0x32, 0x30, 0x38,
0x31, 0x31, 0x31, 0x39, 0x33, 0x31, 0x31, 0x35, 0x5a, 0x18, 0x0f, 0x32, 0x30, 0x37, 0x32, 0x30, 0x37, 0x32, 0x39, 0x31, 0x39,
0x33, 0x31, 0x31, 0x35, 0x5a, 0x30, 0x58, 0x31, 0x0c, 0x30, 0x0a, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x0c, 0x03, 0x43, 0x53, 0x41,
0x31, 0x32, 0x30, 0x30, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x29, 0x43, 0x65, 0x72, 0x74, 0x69, 0x66, 0x69, 0x63, 0x61, 0x74,
0x69, 0x6f, 0x6e, 0x20, 0x44, 0x65, 0x63, 0x6c, 0x61, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x20, 0x53, 0x69, 0x67, 0x6e, 0x69,
0x6e, 0x67, 0x20, 0x4b, 0x65, 0x79, 0x20, 0x30, 0x30, 0x31, 0x31, 0x14, 0x30, 0x12, 0x06, 0x0a, 0x2b, 0x06, 0x01, 0x04, 0x01,
0x82, 0xa2, 0x7c, 0x02, 0x01, 0x0c, 0x04, 0x43, 0x35, 0x41, 0x30, 0x30, 0x59, 0x30, 0x13, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce,
0x3d, 0x02, 0x01, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07, 0x03, 0x42, 0x00, 0x04, 0x5b, 0x5b, 0xc3, 0xae,
0xd6, 0xba, 0xa3, 0x83, 0xfd, 0xcf, 0x9b, 0x9d, 0x5a, 0x73, 0xfa, 0xea, 0x7e, 0x65, 0xeb, 0x59, 0x27, 0xc1, 0xc5, 0xc0, 0x2b,
0x1c, 0xfa, 0x4b, 0x8b, 0xdb, 0x6b, 0x9b, 0x7e, 0xb2, 0x52, 0x51, 0x3f, 0x23, 0xf2, 0x2a, 0x58, 0x33, 0x9d, 0xc8, 0xad, 0xb8,
0x80, 0x46, 0x0a, 0xc9, 0x21, 0xd3, 0x76, 0xd7, 0xb9, 0x70, 0xc5, 0x0c, 0x3b, 0xe6, 0xe6, 0xd2, 0x36, 0xf0, 0xa3, 0x66, 0x30,
0x64, 0x30, 0x12, 0x06, 0x03, 0x55, 0x1d, 0x13, 0x01, 0x01, 0xff, 0x04, 0x08, 0x30, 0x06, 0x01, 0x01, 0xff, 0x02, 0x01, 0x00,
0x30, 0x0e, 0x06, 0x03, 0x55, 0x1d, 0x0f, 0x01, 0x01, 0xff, 0x04, 0x04, 0x03, 0x02, 0x01, 0x86, 0x30, 0x1d, 0x06, 0x03, 0x55,
0x1d, 0x0e, 0x04, 0x16, 0x04, 0x14, 0x83, 0xfa, 0xd7, 0x81, 0xe8, 0x2d, 0x01, 0x8b, 0x4f, 0x14, 0xf0, 0xa1, 0xc7, 0xf6, 0x84,
0x01, 0x8c, 0xc5, 0xd1, 0x9f, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04, 0x18, 0x30, 0x16, 0x80, 0x14, 0x97, 0xe4, 0x69,
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0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x03, 0x49, 0x00, 0x30, 0x46, 0x02, 0x21, 0x00, 0x86, 0xd2, 0xbb, 0xc2, 0xa8,
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0xda, 0x6d, 0xfb, 0x27, 0x10, 0xef, 0x02, 0x21, 0x00, 0xf1, 0x63, 0x0a, 0x0d, 0xb4, 0x5b, 0xc0, 0xeb, 0x64, 0x69, 0xb2, 0x32,
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};

struct TestCase
{
ByteSpan signerCert;
Expand Down Expand Up @@ -551,6 +605,16 @@ static void TestCD_DefaultCdTrustStore(nlTestSuite * inSuite, void * inContext)

NL_TEST_ASSERT_SUCCESS(inSuite, CMS_Verify(ByteSpan(gUntrustedCd), pubKey, cdContentOut));
}

// Verify that untrusted certificate key cannot be added to the trust store.
{
NL_TEST_ASSERT(inSuite, CHIP_ERROR_INVALID_ARGUMENT == trustStore.AddTrustedKey(ByteSpan(gUntrustedCdCert)));
}

// Verify that trusted certificate key can be added to the trust store.
{
NL_TEST_ASSERT_SUCCESS(inSuite, trustStore.AddTrustedKey(ByteSpan(gCdSigningCert001)));
}
}

#define NL_TEST_DEF_FN(fn) NL_TEST_DEF("Test " #fn, fn)
Expand Down
23 changes: 15 additions & 8 deletions src/crypto/CHIPCryptoPALOpenSSL.cpp
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1619,8 +1619,6 @@ CHIP_ERROR ValidateCertificateChain(const uint8_t * rootCertificate, size_t root

VerifyOrReturnError(rootCertificate != nullptr && rootCertificateLen != 0 && CanCastTo<long>(rootCertificateLen),
(result = CertificateChainValidationResult::kRootArgumentInvalid, CHIP_ERROR_INVALID_ARGUMENT));
VerifyOrReturnError(caCertificate != nullptr && caCertificateLen != 0 && CanCastTo<long>(caCertificateLen),
(result = CertificateChainValidationResult::kICAArgumentInvalid, CHIP_ERROR_INVALID_ARGUMENT));
VerifyOrReturnError(leafCertificate != nullptr && leafCertificateLen != 0 && CanCastTo<long>(leafCertificateLen),
(result = CertificateChainValidationResult::kLeafArgumentInvalid, CHIP_ERROR_INVALID_ARGUMENT));

Expand All @@ -1633,20 +1631,29 @@ CHIP_ERROR ValidateCertificateChain(const uint8_t * rootCertificate, size_t root
chain = sk_X509_new_null();
VerifyOrExit(chain != nullptr, (result = CertificateChainValidationResult::kNoMemory, err = CHIP_ERROR_NO_MEMORY));

VerifyOrExit(CanCastTo<long>(rootCertificateLen),
(result = CertificateChainValidationResult::kRootArgumentInvalid, err = CHIP_ERROR_INVALID_ARGUMENT));
x509RootCertificate = d2i_X509(nullptr, &rootCertificate, static_cast<long>(rootCertificateLen));
VerifyOrExit(x509RootCertificate != nullptr,
(result = CertificateChainValidationResult::kRootFormatInvalid, err = CHIP_ERROR_INTERNAL));

status = X509_STORE_add_cert(store, x509RootCertificate);
VerifyOrExit(status == 1, (result = CertificateChainValidationResult::kInternalFrameworkError, err = CHIP_ERROR_INTERNAL));

x509CACertificate = d2i_X509(nullptr, &caCertificate, static_cast<long>(caCertificateLen));
VerifyOrExit(x509CACertificate != nullptr,
(result = CertificateChainValidationResult::kICAFormatInvalid, err = CHIP_ERROR_INTERNAL));

status = static_cast<int>(sk_X509_push(chain, x509CACertificate));
VerifyOrExit(status == 1, (result = CertificateChainValidationResult::kInternalFrameworkError, err = CHIP_ERROR_INTERNAL));
if (caCertificate != nullptr && caCertificateLen > 0)
{
VerifyOrExit(CanCastTo<long>(caCertificateLen),
(result = CertificateChainValidationResult::kICAArgumentInvalid, err = CHIP_ERROR_INVALID_ARGUMENT));
x509CACertificate = d2i_X509(nullptr, &caCertificate, static_cast<long>(caCertificateLen));
VerifyOrExit(x509CACertificate != nullptr,
(result = CertificateChainValidationResult::kICAFormatInvalid, err = CHIP_ERROR_INTERNAL));

status = static_cast<int>(sk_X509_push(chain, x509CACertificate));
VerifyOrExit(status == 1, (result = CertificateChainValidationResult::kInternalFrameworkError, err = CHIP_ERROR_INTERNAL));
}

VerifyOrExit(CanCastTo<long>(leafCertificateLen),
(result = CertificateChainValidationResult::kLeafArgumentInvalid, err = CHIP_ERROR_INVALID_ARGUMENT));
x509LeafCertificate = d2i_X509(nullptr, &leafCertificate, static_cast<long>(leafCertificateLen));
VerifyOrExit(x509LeafCertificate != nullptr,
(result = CertificateChainValidationResult::kLeafFormatInvalid, err = CHIP_ERROR_INTERNAL));
Expand Down
11 changes: 6 additions & 5 deletions src/crypto/CHIPCryptoPALTinyCrypt.cpp
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1191,8 +1191,6 @@ CHIP_ERROR ValidateCertificateChain(const uint8_t * rootCertificate, size_t root

VerifyOrReturnError(rootCertificate != nullptr && rootCertificateLen != 0,
(result = CertificateChainValidationResult::kRootArgumentInvalid, CHIP_ERROR_INVALID_ARGUMENT));
VerifyOrReturnError(caCertificate != nullptr && caCertificateLen != 0,
(result = CertificateChainValidationResult::kICAArgumentInvalid, CHIP_ERROR_INVALID_ARGUMENT));
VerifyOrReturnError(leafCertificate != nullptr && leafCertificateLen != 0,
(result = CertificateChainValidationResult::kLeafArgumentInvalid, CHIP_ERROR_INVALID_ARGUMENT));

Expand All @@ -1203,9 +1201,12 @@ CHIP_ERROR ValidateCertificateChain(const uint8_t * rootCertificate, size_t root
mbedResult = mbedtls_x509_crt_parse(&certChain, Uint8::to_const_uchar(leafCertificate), leafCertificateLen);
VerifyOrExit(mbedResult == 0, (result = CertificateChainValidationResult::kLeafFormatInvalid, error = CHIP_ERROR_INTERNAL));

/* Add the intermediate to the chain */
mbedResult = mbedtls_x509_crt_parse(&certChain, Uint8::to_const_uchar(caCertificate), caCertificateLen);
VerifyOrExit(mbedResult == 0, (result = CertificateChainValidationResult::kICAFormatInvalid, error = CHIP_ERROR_INTERNAL));
/* Add the intermediate to the chain, if present */
if (caCertificate != nullptr && caCertificateLen > 0)
{
mbedResult = mbedtls_x509_crt_parse(&certChain, Uint8::to_const_uchar(caCertificate), caCertificateLen);
VerifyOrExit(mbedResult == 0, (result = CertificateChainValidationResult::kICAFormatInvalid, error = CHIP_ERROR_INTERNAL));
}

/* Parse the root cert */
mbedResult = mbedtls_x509_crt_parse(&rootCert, Uint8::to_const_uchar(rootCertificate), rootCertificateLen);
Expand Down
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