diff --git a/security/keymint/support/include/remote_prov/remote_prov_utils.h b/security/keymint/support/include/remote_prov/remote_prov_utils.h
index 9035d79..3fa23cc 100644
--- a/security/keymint/support/include/remote_prov/remote_prov_utils.h
+++ b/security/keymint/support/include/remote_prov/remote_prov_utils.h
@@ -214,6 +214,14 @@
 ErrMsgOr<bool> isCsrWithProperDiceChain(const std::vector<uint8_t>& csr,
                                         const std::string& instanceName);
 
+/** Checks whether the CSRs contain DICE certificate chains that have root certificates
+ * with the same public key.
+ */
+ErrMsgOr<bool> compareRootPublicKeysInDiceChains(const std::vector<uint8_t>& csr1,
+                                                 std::string_view instanceName1,
+                                                 const std::vector<uint8_t>& csr2,
+                                                 std::string_view instanceName2);
+
 /** Verify the DICE chain. */
 ErrMsgOr<std::vector<BccEntryData>> validateBcc(const cppbor::Array* bcc,
                                                 hwtrust::DiceChain::Kind kind, bool allowAnyMode,
diff --git a/security/keymint/support/remote_prov_utils.cpp b/security/keymint/support/remote_prov_utils.cpp
index ccb2768..15b2144 100644
--- a/security/keymint/support/remote_prov_utils.cpp
+++ b/security/keymint/support/remote_prov_utils.cpp
@@ -882,4 +882,66 @@
     return diceChain->IsProper();
 }
 
+std::string hexlify(const std::vector<unsigned char>& bytes) {
+    std::stringstream ss;
+    ss << std::hex << std::setfill('0');
+
+    for (const auto& byte : bytes) {
+        ss << std::setw(2) << static_cast<int>(byte);
+    }
+
+    return ss.str();
+}
+
+ErrMsgOr<bool> compareRootPublicKeysInDiceChains(const std::vector<uint8_t>& encodedCsr1,
+                                                 std::string_view instanceName1,
+                                                 const std::vector<uint8_t>& encodedCsr2,
+                                                 std::string_view instanceName2) {
+    auto diceChainKind = getDiceChainKind();
+    if (!diceChainKind) {
+        return diceChainKind.message();
+    }
+
+    auto csr1 = hwtrust::Csr::validate(encodedCsr1, *diceChainKind, false /*isFactory*/,
+                                       false /*allowAnyMode*/, deviceSuffix(instanceName1));
+    if (!csr1.ok()) {
+        return csr1.error().message();
+    }
+
+    auto diceChain1 = csr1->getDiceChain();
+    if (!diceChain1.ok()) {
+        return diceChain1.error().message();
+    }
+
+    auto proper1 = diceChain1->IsProper();
+    if (!proper1) {
+        return std::string(instanceName1) + " has a degenerate DICE chain:\n" +
+               hexlify(encodedCsr1);
+    }
+
+    auto csr2 = hwtrust::Csr::validate(encodedCsr2, *diceChainKind, false /*isFactory*/,
+                                       false /*allowAnyMode*/, deviceSuffix(instanceName2));
+    if (!csr2.ok()) {
+        return csr2.error().message();
+    }
+
+    auto diceChain2 = csr2->getDiceChain();
+    if (!diceChain2.ok()) {
+        return diceChain2.error().message();
+    }
+
+    auto proper2 = diceChain2->IsProper();
+    if (!proper2) {
+        return std::string(instanceName2) + " has a degenerate DICE chain:\n" +
+               hexlify(encodedCsr2);
+    }
+
+    auto result = diceChain1->compareRootPublicKey(*diceChain2);
+    if (!result.ok()) {
+        return result.error().message();
+    }
+
+    return *result;
+}
+
 }  // namespace aidl::android::hardware::security::keymint::remote_prov
diff --git a/security/keymint/support/remote_prov_utils_test.cpp b/security/keymint/support/remote_prov_utils_test.cpp
index 4ea8bd8..c6080cd 100644
--- a/security/keymint/support/remote_prov_utils_test.cpp
+++ b/security/keymint/support/remote_prov_utils_test.cpp
@@ -408,6 +408,156 @@
         0x35, 0x2e, 0x34, 0x32, 0x3a, 0x75, 0x73, 0x65, 0x72, 0x2f, 0x72, 0x65, 0x6c, 0x65, 0x61,
         0x73, 0x65, 0x2d, 0x6b, 0x65, 0x79, 0x73};
 
+inline const std::vector<uint8_t> kCsrWithSharedUdsRoot1{
+        0x85, 0x01, 0xa0, 0x82, 0xa5, 0x01, 0x02, 0x03, 0x26, 0x20, 0x01, 0x21, 0x58, 0x20, 0x96,
+        0xf9, 0xf7, 0x16, 0xa7, 0xe2, 0x20, 0xe3, 0x6e, 0x19, 0x8e, 0xc0, 0xc4, 0x82, 0xc5, 0xca,
+        0x8d, 0x1d, 0xb4, 0xda, 0x94, 0x6d, 0xf8, 0xbc, 0x0b, 0x0e, 0xc7, 0x90, 0x83, 0x5b, 0xc3,
+        0x4b, 0x22, 0x58, 0x20, 0xed, 0xe0, 0xa1, 0x56, 0x46, 0x5b, 0xe0, 0x67, 0x2d, 0xbc, 0x08,
+        0x84, 0x6f, 0x43, 0xd0, 0x10, 0xf3, 0x70, 0x90, 0xc2, 0xbf, 0xe3, 0x6b, 0x32, 0x9f, 0xf3,
+        0xca, 0x57, 0x0f, 0xa8, 0xb9, 0xdd, 0x84, 0x43, 0xa1, 0x01, 0x26, 0xa0, 0x59, 0x01, 0x04,
+        0xa9, 0x01, 0x66, 0x69, 0x73, 0x73, 0x75, 0x65, 0x72, 0x02, 0x67, 0x73, 0x75, 0x62, 0x6a,
+        0x65, 0x63, 0x74, 0x3a, 0x00, 0x47, 0x44, 0x50, 0x58, 0x20, 0x55, 0x55, 0x55, 0x55, 0x55,
+        0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+        0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x3a, 0x00, 0x47,
+        0x44, 0x52, 0x58, 0x20, 0xb8, 0x96, 0x54, 0xe2, 0x2c, 0xa4, 0xd2, 0x4a, 0x9c, 0x0e, 0x45,
+        0x11, 0xc8, 0xf2, 0x63, 0xf0, 0x66, 0x0d, 0x2e, 0x20, 0x48, 0x96, 0x90, 0x14, 0xf4, 0x54,
+        0x63, 0xc4, 0xf4, 0x39, 0x30, 0x38, 0x3a, 0x00, 0x47, 0x44, 0x53, 0x55, 0xa1, 0x3a, 0x00,
+        0x01, 0x11, 0x71, 0x6e, 0x63, 0x6f, 0x6d, 0x70, 0x6f, 0x6e, 0x65, 0x6e, 0x74, 0x5f, 0x6e,
+        0x61, 0x6d, 0x65, 0x3a, 0x00, 0x47, 0x44, 0x54, 0x58, 0x20, 0x55, 0x55, 0x55, 0x55, 0x55,
+        0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+        0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x3a, 0x00, 0x47,
+        0x44, 0x56, 0x41, 0x01, 0x3a, 0x00, 0x47, 0x44, 0x57, 0x58, 0x4d, 0xa5, 0x01, 0x02, 0x03,
+        0x26, 0x20, 0x01, 0x21, 0x58, 0x20, 0x04, 0x25, 0x41, 0x6f, 0x6a, 0xdc, 0x88, 0x56, 0x9a,
+        0xd4, 0x39, 0x82, 0xde, 0xd1, 0xe6, 0x65, 0xd4, 0x09, 0xb8, 0x9f, 0xde, 0xbf, 0x09, 0x03,
+        0xe3, 0x9a, 0x48, 0xd4, 0x4f, 0x13, 0xaa, 0x5b, 0x22, 0x58, 0x20, 0x3a, 0xfb, 0x46, 0x2d,
+        0xe1, 0xdf, 0x34, 0x76, 0x03, 0x37, 0x1e, 0xcf, 0xea, 0xd5, 0xf6, 0xd3, 0x99, 0x3e, 0x55,
+        0x2a, 0xd1, 0x9d, 0x10, 0x21, 0xb1, 0xc8, 0x4f, 0xbd, 0xec, 0xb6, 0x67, 0x82, 0x3a, 0x00,
+        0x47, 0x44, 0x58, 0x41, 0x20, 0x58, 0x40, 0x10, 0xda, 0xc8, 0x8d, 0x83, 0x6d, 0xdd, 0x85,
+        0x48, 0x92, 0xdc, 0xc0, 0xc8, 0xde, 0xe4, 0x61, 0x03, 0x04, 0xfb, 0x77, 0xdf, 0xc1, 0xce,
+        0xb7, 0x9b, 0x74, 0x9a, 0x31, 0x7a, 0xca, 0xcb, 0x7c, 0x45, 0x65, 0xf5, 0xc1, 0x3b, 0x29,
+        0x53, 0x22, 0xbc, 0xda, 0xa9, 0xfa, 0x97, 0x84, 0x42, 0xfc, 0xcb, 0x36, 0xae, 0xe9, 0x67,
+        0x1c, 0xb1, 0x19, 0x42, 0x74, 0x01, 0xb1, 0x11, 0xc9, 0x7b, 0x58, 0x84, 0x43, 0xa1, 0x01,
+        0x26, 0xa0, 0x59, 0x02, 0x0f, 0x82, 0x58, 0x20, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+        0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
+        0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x59, 0x01, 0xe9, 0x84, 0x03,
+        0x67, 0x6b, 0x65, 0x79, 0x6d, 0x69, 0x6e, 0x74, 0xae, 0x65, 0x62, 0x72, 0x61, 0x6e, 0x64,
+        0x66, 0x47, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x65, 0x66, 0x75, 0x73, 0x65, 0x64, 0x01, 0x65,
+        0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x65, 0x6d, 0x6f, 0x64, 0x65, 0x6c, 0x66, 0x64, 0x65, 0x76,
+        0x69, 0x63, 0x65, 0x66, 0x64, 0x65, 0x76, 0x69, 0x63, 0x65, 0x67, 0x70, 0x72, 0x6f, 0x64,
+        0x75, 0x63, 0x74, 0x65, 0x70, 0x69, 0x78, 0x65, 0x6c, 0x68, 0x76, 0x62, 0x5f, 0x73, 0x74,
+        0x61, 0x74, 0x65, 0x65, 0x67, 0x72, 0x65, 0x65, 0x6e, 0x6a, 0x6f, 0x73, 0x5f, 0x76, 0x65,
+        0x72, 0x73, 0x69, 0x6f, 0x6e, 0x62, 0x31, 0x32, 0x6c, 0x6d, 0x61, 0x6e, 0x75, 0x66, 0x61,
+        0x63, 0x74, 0x75, 0x72, 0x65, 0x72, 0x66, 0x47, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x6d, 0x76,
+        0x62, 0x6d, 0x65, 0x74, 0x61, 0x5f, 0x64, 0x69, 0x67, 0x65, 0x73, 0x74, 0x4f, 0x11, 0x22,
+        0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x6e, 0x73,
+        0x65, 0x63, 0x75, 0x72, 0x69, 0x74, 0x79, 0x5f, 0x6c, 0x65, 0x76, 0x65, 0x6c, 0x63, 0x74,
+        0x65, 0x65, 0x70, 0x62, 0x6f, 0x6f, 0x74, 0x5f, 0x70, 0x61, 0x74, 0x63, 0x68, 0x5f, 0x6c,
+        0x65, 0x76, 0x65, 0x6c, 0x1a, 0x01, 0x34, 0x8c, 0x62, 0x70, 0x62, 0x6f, 0x6f, 0x74, 0x6c,
+        0x6f, 0x61, 0x64, 0x65, 0x72, 0x5f, 0x73, 0x74, 0x61, 0x74, 0x65, 0x66, 0x6c, 0x6f, 0x63,
+        0x6b, 0x65, 0x64, 0x72, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x5f, 0x70, 0x61, 0x74, 0x63,
+        0x68, 0x5f, 0x6c, 0x65, 0x76, 0x65, 0x6c, 0x1a, 0x01, 0x34, 0x8c, 0x61, 0x72, 0x76, 0x65,
+        0x6e, 0x64, 0x6f, 0x72, 0x5f, 0x70, 0x61, 0x74, 0x63, 0x68, 0x5f, 0x6c, 0x65, 0x76, 0x65,
+        0x6c, 0x1a, 0x01, 0x34, 0x8c, 0x63, 0x82, 0xa6, 0x01, 0x02, 0x03, 0x26, 0x20, 0x01, 0x21,
+        0x58, 0x20, 0xf6, 0x86, 0x74, 0x7d, 0x1a, 0x83, 0x75, 0xec, 0x8c, 0xf9, 0x3a, 0xa9, 0x20,
+        0x88, 0xe5, 0xca, 0x24, 0x34, 0x24, 0xbf, 0x89, 0xe7, 0xdb, 0x44, 0xc3, 0x6e, 0xdd, 0x5d,
+        0x1a, 0xe1, 0xf0, 0xd8, 0x22, 0x58, 0x20, 0xae, 0xcb, 0x01, 0x2e, 0x73, 0xac, 0xb5, 0x52,
+        0x0e, 0x73, 0x15, 0xd8, 0x9d, 0x78, 0x64, 0x10, 0x35, 0x41, 0x0e, 0xc9, 0x7d, 0x9a, 0x11,
+        0xa3, 0xed, 0x7f, 0x53, 0xa6, 0xff, 0xc4, 0xad, 0x61, 0x23, 0x58, 0x20, 0x5a, 0xd2, 0xc5,
+        0xd0, 0x58, 0x2e, 0x94, 0x93, 0xd7, 0xa4, 0x2d, 0x5b, 0x12, 0x43, 0x52, 0x93, 0xc3, 0x95,
+        0x91, 0xac, 0x6a, 0xa3, 0x31, 0x08, 0xda, 0x33, 0x6a, 0xce, 0x7e, 0x8e, 0xae, 0xb1, 0xa6,
+        0x01, 0x02, 0x03, 0x26, 0x20, 0x01, 0x21, 0x58, 0x20, 0x8f, 0xb1, 0x85, 0xa5, 0xf5, 0x68,
+        0x74, 0xfc, 0x8a, 0x87, 0x2b, 0x13, 0xea, 0xf7, 0xff, 0x82, 0x6d, 0xcf, 0xc3, 0xea, 0x04,
+        0x80, 0x40, 0xe5, 0xcb, 0x80, 0xdb, 0x07, 0x8b, 0x36, 0x8c, 0x29, 0x22, 0x58, 0x20, 0x6a,
+        0x8c, 0x52, 0x3f, 0xf7, 0x26, 0xb3, 0xf9, 0xa8, 0x91, 0x08, 0x4e, 0xec, 0x7a, 0x03, 0x16,
+        0x1c, 0xab, 0x12, 0xcd, 0x8b, 0x05, 0x77, 0x33, 0x16, 0x1c, 0x80, 0x99, 0x79, 0x14, 0x6a,
+        0x5c, 0x23, 0x58, 0x21, 0x00, 0xd0, 0x0a, 0xa2, 0xaa, 0x27, 0x62, 0x10, 0x24, 0x0c, 0x74,
+        0x34, 0xe7, 0x06, 0xb3, 0x4d, 0x33, 0x9c, 0x86, 0xa6, 0x62, 0xb9, 0x0f, 0x1a, 0x4b, 0xe2,
+        0x8b, 0x45, 0x0a, 0xc9, 0xe3, 0x43, 0x28, 0x58, 0x40, 0xea, 0xe3, 0xd3, 0xd9, 0x7f, 0x4e,
+        0x08, 0x8a, 0x5b, 0xb9, 0xef, 0x28, 0x5a, 0xe0, 0x02, 0x40, 0xf5, 0x68, 0x49, 0x8b, 0xa7,
+        0xf7, 0x9d, 0xa3, 0xb3, 0x37, 0x72, 0x79, 0xa9, 0x32, 0x47, 0xf6, 0x8d, 0x5d, 0x08, 0xe7,
+        0xec, 0x00, 0x19, 0x09, 0x6f, 0x0a, 0x4d, 0x7c, 0x62, 0x6c, 0x2b, 0xaa, 0x33, 0x61, 0xe5,
+        0xa5, 0x3f, 0x2a, 0xfe, 0xcc, 0xdf, 0x8e, 0x62, 0x1c, 0x31, 0xe1, 0x56, 0x6b, 0xa1, 0x6b,
+        0x66, 0x69, 0x6e, 0x67, 0x65, 0x72, 0x70, 0x72, 0x69, 0x6e, 0x74, 0x78, 0x3b, 0x62, 0x72,
+        0x61, 0x6e, 0x64, 0x31, 0x2f, 0x70, 0x72, 0x6f, 0x64, 0x75, 0x63, 0x74, 0x31, 0x2f, 0x64,
+        0x65, 0x76, 0x69, 0x63, 0x65, 0x31, 0x3a, 0x31, 0x31, 0x2f, 0x69, 0x64, 0x2f, 0x32, 0x30,
+        0x32, 0x31, 0x30, 0x38, 0x30, 0x35, 0x2e, 0x34, 0x32, 0x3a, 0x75, 0x73, 0x65, 0x72, 0x2f,
+        0x72, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x2d, 0x6b, 0x65, 0x79, 0x73};
+
+inline const std::vector<uint8_t> kCsrWithSharedUdsRoot2{
+        0x85, 0x01, 0xa0, 0x82, 0xa5, 0x01, 0x02, 0x03, 0x26, 0x20, 0x01, 0x21, 0x58, 0x20, 0x96,
+        0xf9, 0xf7, 0x16, 0xa7, 0xe2, 0x20, 0xe3, 0x6e, 0x19, 0x8e, 0xc0, 0xc4, 0x82, 0xc5, 0xca,
+        0x8d, 0x1d, 0xb4, 0xda, 0x94, 0x6d, 0xf8, 0xbc, 0x0b, 0x0e, 0xc7, 0x90, 0x83, 0x5b, 0xc3,
+        0x4b, 0x22, 0x58, 0x20, 0xed, 0xe0, 0xa1, 0x56, 0x46, 0x5b, 0xe0, 0x67, 0x2d, 0xbc, 0x08,
+        0x84, 0x6f, 0x43, 0xd0, 0x10, 0xf3, 0x70, 0x90, 0xc2, 0xbf, 0xe3, 0x6b, 0x32, 0x9f, 0xf3,
+        0xca, 0x57, 0x0f, 0xa8, 0xb9, 0xdd, 0x84, 0x43, 0xa1, 0x01, 0x26, 0xa0, 0x59, 0x01, 0x04,
+        0xa9, 0x01, 0x66, 0x69, 0x73, 0x73, 0x75, 0x65, 0x72, 0x02, 0x67, 0x73, 0x75, 0x62, 0x6a,
+        0x65, 0x63, 0x74, 0x3a, 0x00, 0x47, 0x44, 0x50, 0x58, 0x20, 0x55, 0x55, 0x55, 0x55, 0x55,
+        0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+        0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x3a, 0x00, 0x47,
+        0x44, 0x52, 0x58, 0x20, 0xb8, 0x96, 0x54, 0xe2, 0x2c, 0xa4, 0xd2, 0x4a, 0x9c, 0x0e, 0x45,
+        0x11, 0xc8, 0xf2, 0x63, 0xf0, 0x66, 0x0d, 0x2e, 0x20, 0x48, 0x96, 0x90, 0x14, 0xf4, 0x54,
+        0x63, 0xc4, 0xf4, 0x39, 0x30, 0x38, 0x3a, 0x00, 0x47, 0x44, 0x53, 0x55, 0xa1, 0x3a, 0x00,
+        0x01, 0x11, 0x71, 0x6e, 0x63, 0x6f, 0x6d, 0x70, 0x6f, 0x6e, 0x65, 0x6e, 0x74, 0x5f, 0x6e,
+        0x61, 0x6d, 0x65, 0x3a, 0x00, 0x47, 0x44, 0x54, 0x58, 0x20, 0x55, 0x55, 0x55, 0x55, 0x55,
+        0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+        0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x3a, 0x00, 0x47,
+        0x44, 0x56, 0x41, 0x01, 0x3a, 0x00, 0x47, 0x44, 0x57, 0x58, 0x4d, 0xa5, 0x01, 0x02, 0x03,
+        0x26, 0x20, 0x01, 0x21, 0x58, 0x20, 0x2d, 0xbd, 0x92, 0x58, 0xc8, 0xcd, 0xc3, 0xc5, 0x14,
+        0xe3, 0x6e, 0x5f, 0xab, 0x71, 0x41, 0x46, 0x83, 0xb4, 0x3e, 0x82, 0xdb, 0xe7, 0x7d, 0x27,
+        0xe5, 0x26, 0x36, 0x94, 0xcb, 0x4c, 0x72, 0x8f, 0x22, 0x58, 0x20, 0xbf, 0xa2, 0xa7, 0x15,
+        0x46, 0x5a, 0xea, 0xa8, 0xc7, 0xad, 0x22, 0x61, 0x9c, 0xba, 0x87, 0x70, 0x65, 0x64, 0x11,
+        0x05, 0x8a, 0x58, 0x8c, 0x0c, 0x25, 0xc7, 0xf8, 0x5f, 0xfc, 0x4a, 0xee, 0xa1, 0x3a, 0x00,
+        0x47, 0x44, 0x58, 0x41, 0x20, 0x58, 0x40, 0x43, 0xba, 0xff, 0xdb, 0xbb, 0xa9, 0x9e, 0x8f,
+        0x06, 0xdf, 0x33, 0xa0, 0x3f, 0x30, 0xc3, 0x64, 0x84, 0x32, 0xb5, 0x2a, 0x06, 0x53, 0x13,
+        0x70, 0xbe, 0xa3, 0x0b, 0x4d, 0xbe, 0x8d, 0x8c, 0x90, 0xde, 0x6c, 0x1d, 0xa8, 0xea, 0x40,
+        0xd5, 0x17, 0xa1, 0xea, 0x62, 0x95, 0x37, 0x64, 0x92, 0xc3, 0xc4, 0xef, 0xd7, 0xcf, 0x87,
+        0x0c, 0x9a, 0xd2, 0x5c, 0x10, 0x1d, 0x00, 0x2e, 0xe4, 0xe9, 0x1f, 0x84, 0x43, 0xa1, 0x01,
+        0x26, 0xa0, 0x59, 0x02, 0x10, 0x82, 0x58, 0x20, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+        0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
+        0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x59, 0x01, 0xea, 0x84, 0x03,
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+        0x75, 0x63, 0x74, 0x65, 0x70, 0x69, 0x78, 0x65, 0x6c, 0x68, 0x76, 0x62, 0x5f, 0x73, 0x74,
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+        0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x6e, 0x73,
+        0x65, 0x63, 0x75, 0x72, 0x69, 0x74, 0x79, 0x5f, 0x6c, 0x65, 0x76, 0x65, 0x6c, 0x63, 0x74,
+        0x65, 0x65, 0x70, 0x62, 0x6f, 0x6f, 0x74, 0x5f, 0x70, 0x61, 0x74, 0x63, 0x68, 0x5f, 0x6c,
+        0x65, 0x76, 0x65, 0x6c, 0x1a, 0x01, 0x34, 0x8c, 0x62, 0x70, 0x62, 0x6f, 0x6f, 0x74, 0x6c,
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+        0x6b, 0x65, 0x64, 0x72, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x5f, 0x70, 0x61, 0x74, 0x63,
+        0x68, 0x5f, 0x6c, 0x65, 0x76, 0x65, 0x6c, 0x1a, 0x01, 0x34, 0x8c, 0x61, 0x72, 0x76, 0x65,
+        0x6e, 0x64, 0x6f, 0x72, 0x5f, 0x70, 0x61, 0x74, 0x63, 0x68, 0x5f, 0x6c, 0x65, 0x76, 0x65,
+        0x6c, 0x1a, 0x01, 0x34, 0x8c, 0x63, 0x82, 0xa6, 0x01, 0x02, 0x03, 0x26, 0x20, 0x01, 0x21,
+        0x58, 0x20, 0xad, 0xd2, 0x8c, 0xcc, 0xfb, 0x22, 0xd8, 0x5a, 0x3b, 0x9d, 0x22, 0x58, 0xb3,
+        0x7c, 0xcc, 0xa5, 0x22, 0x46, 0x86, 0x2b, 0x29, 0x87, 0x49, 0xdd, 0xe4, 0x2c, 0xb4, 0x3f,
+        0xf2, 0x4e, 0x6a, 0xed, 0x22, 0x58, 0x20, 0xe9, 0x34, 0x28, 0x54, 0x21, 0x7e, 0x88, 0x34,
+        0x82, 0x0d, 0x0f, 0x14, 0x5b, 0xec, 0x61, 0xc4, 0xf2, 0xa4, 0xef, 0xf8, 0x17, 0xeb, 0xeb,
+        0x05, 0x01, 0x36, 0x14, 0x52, 0xc7, 0xc2, 0xd8, 0xd3, 0x23, 0x58, 0x21, 0x00, 0xd9, 0xb4,
+        0x13, 0xd0, 0x86, 0x31, 0x5e, 0x97, 0xc2, 0x54, 0x03, 0x72, 0x80, 0x6f, 0x14, 0x53, 0xbe,
+        0x2e, 0xe5, 0x1b, 0x02, 0x1a, 0x62, 0x1a, 0x88, 0xe8, 0xa2, 0xde, 0xd0, 0x7d, 0xf6, 0x53,
+        0xa6, 0x01, 0x02, 0x03, 0x26, 0x20, 0x01, 0x21, 0x58, 0x20, 0xca, 0x7d, 0x6e, 0xb5, 0x78,
+        0x99, 0x9e, 0x66, 0xf4, 0x5d, 0xfe, 0xd5, 0x92, 0xe3, 0x30, 0xf5, 0xd5, 0xc2, 0x82, 0xf2,
+        0x6d, 0x58, 0x16, 0x26, 0xa5, 0xe7, 0xfc, 0x62, 0x8f, 0xf3, 0x61, 0x56, 0x22, 0x58, 0x20,
+        0x9f, 0x42, 0x22, 0x11, 0x1c, 0x45, 0x5c, 0x3a, 0x30, 0x95, 0xb4, 0xb3, 0x63, 0x26, 0x09,
+        0xfc, 0x2e, 0x6e, 0x99, 0xdd, 0x44, 0x37, 0x34, 0xa9, 0x68, 0x42, 0xf5, 0x91, 0x40, 0xae,
+        0xfa, 0x52, 0x23, 0x58, 0x21, 0x00, 0xe2, 0x3b, 0xaa, 0x88, 0xfc, 0xec, 0x23, 0xe7, 0x93,
+        0x91, 0x04, 0x8e, 0xae, 0xa7, 0x44, 0xb4, 0x5e, 0x46, 0xe8, 0x91, 0x59, 0x3e, 0x43, 0x13,
+        0x82, 0x8e, 0xa1, 0xee, 0x47, 0xbd, 0x13, 0x27, 0x58, 0x40, 0x43, 0x1d, 0xc8, 0x35, 0x44,
+        0xbf, 0xd5, 0x06, 0x2c, 0xac, 0x18, 0x3c, 0xbb, 0xc6, 0x77, 0x99, 0x2f, 0x4e, 0x71, 0xcd,
+        0x7a, 0x9b, 0x93, 0xc7, 0x08, 0xa3, 0x71, 0x89, 0xb5, 0xb2, 0x04, 0xbe, 0x69, 0x22, 0xf3,
+        0x66, 0xb8, 0xa9, 0xc6, 0x5e, 0x7c, 0x45, 0xf6, 0x2f, 0x8a, 0xa9, 0x3e, 0xee, 0x6f, 0x92,
+        0x2a, 0x9c, 0x91, 0xe2, 0x1d, 0x4a, 0x4e, 0x4a, 0xb4, 0xcc, 0x87, 0xd2, 0x85, 0x5f, 0xa1,
+        0x6b, 0x66, 0x69, 0x6e, 0x67, 0x65, 0x72, 0x70, 0x72, 0x69, 0x6e, 0x74, 0x78, 0x3b, 0x62,
+        0x72, 0x61, 0x6e, 0x64, 0x31, 0x2f, 0x70, 0x72, 0x6f, 0x64, 0x75, 0x63, 0x74, 0x31, 0x2f,
+        0x64, 0x65, 0x76, 0x69, 0x63, 0x65, 0x31, 0x3a, 0x31, 0x31, 0x2f, 0x69, 0x64, 0x2f, 0x32,
+        0x30, 0x32, 0x31, 0x30, 0x38, 0x30, 0x35, 0x2e, 0x34, 0x32, 0x3a, 0x75, 0x73, 0x65, 0x72,
+        0x2f, 0x72, 0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x2d, 0x6b, 0x65, 0x79, 0x73};
+
 const RpcHardwareInfo kRpcHardwareInfo = {.versionNumber = 3};
 
 inline bool equal_byte_views(const byte_view& view1, const byte_view& view2) {
@@ -765,6 +915,21 @@
     ASSERT_TRUE(csr) << csr.message();
 }
 
+TEST(RemoteProvUtilsTest, compareRootPublicKeysInDiceChains) {
+    ASSERT_NE(kCsrWithSharedUdsRoot1, kCsrWithSharedUdsRoot2);
+    ASSERT_NE(kCsrWithUdsCerts, kCsrWithSharedUdsRoot1);
+
+    auto equal = compareRootPublicKeysInDiceChains(kCsrWithSharedUdsRoot1, DEFAULT_INSTANCE_NAME,
+                                                   kCsrWithSharedUdsRoot2, DEFAULT_INSTANCE_NAME);
+    ASSERT_TRUE(equal) << equal.message();
+    ASSERT_TRUE(*equal) << "Root public keys in DICE chains do not match.";
+
+    auto notEqual = compareRootPublicKeysInDiceChains(kCsrWithSharedUdsRoot1, DEFAULT_INSTANCE_NAME,
+                                                      kCsrWithUdsCerts, DEFAULT_INSTANCE_NAME);
+    ASSERT_TRUE(notEqual) << notEqual.message();
+    ASSERT_FALSE(*notEqual) << "Root public keys in DICE chains match.";
+}
+
 TEST(RemoteProvUtilsTest, parseFullyQualifiedInstanceNames) {
     ASSERT_EQ(deviceSuffix(RKPVM_INSTANCE_NAME), "avf");
     ASSERT_EQ(deviceSuffix(DEFAULT_INSTANCE_NAME), "default");
diff --git a/security/rkp/aidl/vts/functional/VtsRemotelyProvisionedComponentTests.cpp b/security/rkp/aidl/vts/functional/VtsRemotelyProvisionedComponentTests.cpp
index f0745d7..d9bd0d8 100644
--- a/security/rkp/aidl/vts/functional/VtsRemotelyProvisionedComponentTests.cpp
+++ b/security/rkp/aidl/vts/functional/VtsRemotelyProvisionedComponentTests.cpp
@@ -151,20 +151,24 @@
     return corruptChain.encode();
 }
 
-bool matching_keymint_device(const string& rp_name, std::shared_ptr<IKeyMintDevice>* keyMint) {
-    auto rp_suffix = deviceSuffix(rp_name);
+template <class T>
+auto getHandle(const string& serviceName) {
+    ::ndk::SpAIBinder binder(AServiceManager_waitForService(serviceName.c_str()));
+    return T::fromBinder(binder);
+}
 
-    vector<string> km_names = ::android::getAidlHalInstanceNames(IKeyMintDevice::descriptor);
-    for (const string& km_name : km_names) {
+std::shared_ptr<IKeyMintDevice> matchingKeyMintDevice(const string& rpcName) {
+    auto rpcSuffix = deviceSuffix(rpcName);
+
+    vector<string> kmNames = ::android::getAidlHalInstanceNames(IKeyMintDevice::descriptor);
+    for (const string& kmName : kmNames) {
         // If the suffix of the KeyMint instance equals the suffix of the
         // RemotelyProvisionedComponent instance, assume they match.
-        if (deviceSuffix(km_name) == rp_suffix && AServiceManager_isDeclared(km_name.c_str())) {
-            ::ndk::SpAIBinder binder(AServiceManager_waitForService(km_name.c_str()));
-            *keyMint = IKeyMintDevice::fromBinder(binder);
-            return true;
+        if (deviceSuffix(kmName) == rpcSuffix && AServiceManager_isDeclared(kmName.c_str())) {
+            getHandle<IKeyMintDevice>(kmName);
         }
     }
-    return false;
+    return nullptr;
 }
 
 }  // namespace
@@ -173,8 +177,7 @@
   public:
     virtual void SetUp() override {
         if (AServiceManager_isDeclared(GetParam().c_str())) {
-            ::ndk::SpAIBinder binder(AServiceManager_waitForService(GetParam().c_str()));
-            provisionable_ = IRemotelyProvisionedComponent::fromBinder(binder);
+            provisionable_ = getHandle<IRemotelyProvisionedComponent>(GetParam());
         }
         ASSERT_NE(provisionable_, nullptr);
         auto status = provisionable_->getHardwareInfo(&rpcHardwareInfo);
@@ -210,9 +213,7 @@
     std::set<std::string> uniqueIds;
     for (auto hal : ::android::getAidlHalInstanceNames(IRemotelyProvisionedComponent::descriptor)) {
         ASSERT_TRUE(AServiceManager_isDeclared(hal.c_str()));
-        ::ndk::SpAIBinder binder(AServiceManager_waitForService(hal.c_str()));
-        std::shared_ptr<IRemotelyProvisionedComponent> rpc =
-                IRemotelyProvisionedComponent::fromBinder(binder);
+        auto rpc = getHandle<IRemotelyProvisionedComponent>(hal);
         ASSERT_NE(rpc, nullptr);
 
         RpcHardwareInfo hwInfo;
@@ -248,9 +249,7 @@
         GTEST_SKIP() << "Strongbox is not present on this device.";
     }
 
-    ::ndk::SpAIBinder binder(AServiceManager_waitForService(DEFAULT_INSTANCE_NAME.c_str()));
-    std::shared_ptr<IRemotelyProvisionedComponent> rpc =
-            IRemotelyProvisionedComponent::fromBinder(binder);
+    auto rpc = getHandle<IRemotelyProvisionedComponent>(DEFAULT_INSTANCE_NAME);
     ASSERT_NE(rpc, nullptr);
 
     bytevec challenge = randomBytes(64);
@@ -263,6 +262,55 @@
     ASSERT_TRUE(*result);
 }
 
+/**
+ * Verify that if a protected VM (also called `avf` or RKP VM) implementation exists, then the
+ * protected VM and the primary KeyMint (also called 'default') implementation's DICE certificate
+ * chain has the same root public key, i.e., the same UDS public key
+ */
+// @VsrTest = 7.1-003.001
+TEST(NonParameterizedTests, equalUdsPubInDiceCertChainForRkpVmAndPrimaryKeyMintInstances) {
+    int apiLevel = get_vsr_api_level();
+    if (apiLevel < 202504) {
+        if (!AServiceManager_isDeclared(RKPVM_INSTANCE_NAME.c_str())) {
+            GTEST_SKIP() << "The RKP VM (" << RKPVM_INSTANCE_NAME
+                         << ") is not present on this device.";
+        }
+    } else {
+        ASSERT_TRUE(AServiceManager_isDeclared(RKPVM_INSTANCE_NAME.c_str()));
+    }
+
+    auto rkpVmRpc = getHandle<IRemotelyProvisionedComponent>(RKPVM_INSTANCE_NAME);
+    ASSERT_NE(rkpVmRpc, nullptr) << "The RKP VM (" << RKPVM_INSTANCE_NAME
+                                 << ") RPC is unavailable.";
+
+    RpcHardwareInfo hardwareInfo;
+    auto status = rkpVmRpc->getHardwareInfo(&hardwareInfo);
+    if (!status.isOk()) {
+        GTEST_SKIP() << "The RKP VM is not supported on this system.";
+    }
+
+    bytevec rkpVmChallenge = randomBytes(MAX_CHALLENGE_SIZE);
+    bytevec rkpVmCsr;
+    auto rkpVmStatus =
+            rkpVmRpc->generateCertificateRequestV2({} /* keysToSign */, rkpVmChallenge, &rkpVmCsr);
+    ASSERT_TRUE(rkpVmStatus.isOk()) << rkpVmStatus.getDescription();
+
+    auto primaryKeyMintRpc = getHandle<IRemotelyProvisionedComponent>(DEFAULT_INSTANCE_NAME);
+    ASSERT_NE(primaryKeyMintRpc, nullptr)
+            << "The Primary KeyMint (" << DEFAULT_INSTANCE_NAME << ") RPC is unavailable.";
+
+    bytevec primaryKeyMintChallenge = randomBytes(MAX_CHALLENGE_SIZE);
+    bytevec primaryKeyMintCsr;
+    auto primaryKeyMintStatus = primaryKeyMintRpc->generateCertificateRequestV2(
+            {} /* keysToSign */, primaryKeyMintChallenge, &primaryKeyMintCsr);
+    ASSERT_TRUE(primaryKeyMintStatus.isOk()) << primaryKeyMintStatus.getDescription();
+
+    auto equal = compareRootPublicKeysInDiceChains(rkpVmCsr, RKPVM_INSTANCE_NAME, primaryKeyMintCsr,
+                                                   DEFAULT_INSTANCE_NAME);
+    ASSERT_TRUE(equal) << equal.message();
+    ASSERT_TRUE(*equal) << "Primary KeyMint and RKP VM RPCs have different UDS public keys";
+}
+
 using GetHardwareInfoTests = VtsRemotelyProvisionedComponentTests;
 
 INSTANTIATE_REM_PROV_AIDL_TEST(GetHardwareInfoTests);
@@ -336,9 +384,8 @@
  */
 TEST_P(GenerateKeyTests, generateAndUseEcdsaP256Key_prodMode) {
     // See if there is a matching IKeyMintDevice for this IRemotelyProvisionedComponent.
-    std::shared_ptr<IKeyMintDevice> keyMint;
-    if (!matching_keymint_device(GetParam(), &keyMint)) {
-        // No matching IKeyMintDevice.
+    auto keyMint = matchingKeyMintDevice(GetParam());
+    if (!keyMint) {
         GTEST_SKIP() << "Skipping key use test as no matching KeyMint device found";
         return;
     }
@@ -931,9 +978,8 @@
 // @VsrTest = 3.10-015
 TEST_P(CertificateRequestV2Test, DeviceInfo) {
     // See if there is a matching IKeyMintDevice for this IRemotelyProvisionedComponent.
-    std::shared_ptr<IKeyMintDevice> keyMint;
-    if (!matching_keymint_device(GetParam(), &keyMint)) {
-        // No matching IKeyMintDevice.
+    std::shared_ptr<IKeyMintDevice> keyMint = matchingKeyMintDevice(GetParam());
+    if (!keyMint) {
         GTEST_SKIP() << "Skipping key use test as no matching KeyMint device found";
         return;
     }