diff --git a/security/keymint/support/remote_prov_utils.cpp b/security/keymint/support/remote_prov_utils.cpp
index 464d912..6a5b608 100644
--- a/security/keymint/support/remote_prov_utils.cpp
+++ b/security/keymint/support/remote_prov_utils.cpp
@@ -1136,42 +1136,25 @@
                      allowAnyMode);
 }
 
-ErrMsgOr<bool> isCsrWithProperDiceChain(const std::vector<uint8_t>& csr,
+ErrMsgOr<bool> isCsrWithProperDiceChain(const std::vector<uint8_t>& encodedCsr,
                                         const std::string& instanceName) {
-    auto [parsedRequest, _, csrErrMsg] = cppbor::parse(csr);
-    if (!parsedRequest) {
-        return csrErrMsg;
-    }
-    if (!parsedRequest->asArray()) {
-        return "AuthenticatedRequest is not a CBOR array.";
-    }
-    if (parsedRequest->asArray()->size() != 4U) {
-        return "AuthenticatedRequest must contain version, UDS certificates, DICE chain, and "
-               "signed data. However, the parsed AuthenticatedRequest has " +
-               std::to_string(parsedRequest->asArray()->size()) + " entries.";
-    }
-
-    auto version = parsedRequest->asArray()->get(0)->asUint();
-    auto diceCertChain = parsedRequest->asArray()->get(2)->asArray();
-
-    if (!version || version->value() != 1U) {
-        return "AuthenticatedRequest version must be an unsigned integer and must be equal to 1.";
-    }
-    if (!diceCertChain) {
-        return "AuthenticatedRequest DiceCertChain must be an Array.";
-    }
-
-    // DICE chain is [ pubkey, + DiceChainEntry ].
     auto diceChainKind = getDiceChainKind();
     if (!diceChainKind) {
         return diceChainKind.message();
     }
 
-    auto encodedDiceChain = diceCertChain->encode();
-    auto chain = hwtrust::DiceChain::Verify(encodedDiceChain, *diceChainKind,
-                                            /*allowAnyMode=*/false, deviceSuffix(instanceName));
-    if (!chain.ok()) return chain.error().message();
-    return chain->IsProper();
+    auto csr = hwtrust::Csr::validate(encodedCsr, *diceChainKind, false /*allowAnyMode*/,
+                                      deviceSuffix(instanceName));
+    if (!csr.ok()) {
+        return csr.error().message();
+    }
+
+    auto diceChain = csr->getDiceChain();
+    if (!diceChain.ok()) {
+        return diceChain.error().message();
+    }
+
+    return diceChain->IsProper();
 }
 
 }  // 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 8ffb149..58f1fc5 100644
--- a/security/keymint/support/remote_prov_utils_test.cpp
+++ b/security/keymint/support/remote_prov_utils_test.cpp
@@ -82,6 +82,76 @@
         0x50, 0x12, 0x82, 0x37, 0xfe, 0xa4, 0x07, 0xc3, 0xd5, 0xc3, 0x78, 0xcc, 0xf9, 0xef, 0xe1,
         0x95, 0x38, 0x9f, 0xb0, 0x79, 0x16, 0x4c, 0x4a, 0x23, 0xc4, 0xdc, 0x35, 0x4e, 0x0f};
 
+inline const std::vector<uint8_t> kCsrWithDegenerateDiceChain{
+        0x85, 0x01, 0xa0, 0x82, 0xa6, 0x01, 0x02, 0x03, 0x26, 0x20, 0x01, 0x21, 0x58, 0x20, 0x65,
+        0xe0, 0x51, 0x62, 0x45, 0x17, 0xcc, 0xa8, 0x40, 0x41, 0x6d, 0xc0, 0x86, 0x7a, 0x15, 0x6e,
+        0xee, 0x04, 0xae, 0xbd, 0x05, 0x13, 0x36, 0xcb, 0xd2, 0x8d, 0xd8, 0x80, 0x16, 0xc1, 0x69,
+        0x0d, 0x22, 0x58, 0x20, 0xea, 0xa1, 0x37, 0xd5, 0x01, 0xbd, 0xe0, 0x25, 0x6a, 0x3d, 0x4c,
+        0xcd, 0x31, 0xa1, 0x4d, 0xa6, 0x80, 0x82, 0x03, 0x40, 0xe2, 0x88, 0x81, 0x53, 0xc3, 0xb3,
+        0x6d, 0xf7, 0xf4, 0x10, 0xde, 0x96, 0x23, 0x58, 0x20, 0x24, 0x69, 0x44, 0x6e, 0xf5, 0xcc,
+        0x18, 0xfe, 0x63, 0xac, 0x5e, 0x85, 0x9c, 0xfc, 0x9d, 0xfa, 0x90, 0xee, 0x6c, 0xc2, 0x22,
+        0x49, 0x02, 0xc7, 0x93, 0xf4, 0x30, 0xf1, 0x51, 0x11, 0x20, 0x33, 0x84, 0x43, 0xa1, 0x01,
+        0x26, 0xa0, 0x58, 0x97, 0xa5, 0x01, 0x66, 0x69, 0x73, 0x73, 0x75, 0x65, 0x72, 0x02, 0x67,
+        0x73, 0x75, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x3a, 0x00, 0x47, 0x44, 0x56, 0x41, 0x01, 0x3a,
+        0x00, 0x47, 0x44, 0x57, 0x58, 0x70, 0xa6, 0x01, 0x02, 0x03, 0x26, 0x20, 0x01, 0x21, 0x58,
+        0x20, 0x65, 0xe0, 0x51, 0x62, 0x45, 0x17, 0xcc, 0xa8, 0x40, 0x41, 0x6d, 0xc0, 0x86, 0x7a,
+        0x15, 0x6e, 0xee, 0x04, 0xae, 0xbd, 0x05, 0x13, 0x36, 0xcb, 0xd2, 0x8d, 0xd8, 0x80, 0x16,
+        0xc1, 0x69, 0x0d, 0x22, 0x58, 0x20, 0xea, 0xa1, 0x37, 0xd5, 0x01, 0xbd, 0xe0, 0x25, 0x6a,
+        0x3d, 0x4c, 0xcd, 0x31, 0xa1, 0x4d, 0xa6, 0x80, 0x82, 0x03, 0x40, 0xe2, 0x88, 0x81, 0x53,
+        0xc3, 0xb3, 0x6d, 0xf7, 0xf4, 0x10, 0xde, 0x96, 0x23, 0x58, 0x20, 0x24, 0x69, 0x44, 0x6e,
+        0xf5, 0xcc, 0x18, 0xfe, 0x63, 0xac, 0x5e, 0x85, 0x9c, 0xfc, 0x9d, 0xfa, 0x90, 0xee, 0x6c,
+        0xc2, 0x22, 0x49, 0x02, 0xc7, 0x93, 0xf4, 0x30, 0xf1, 0x51, 0x11, 0x20, 0x33, 0x3a, 0x00,
+        0x47, 0x44, 0x58, 0x41, 0x20, 0x58, 0x40, 0x16, 0xb9, 0x51, 0xdf, 0x31, 0xad, 0xa0, 0x3d,
+        0x98, 0x40, 0x85, 0xdf, 0xd9, 0xbe, 0xf6, 0x79, 0x62, 0x36, 0x8b, 0x60, 0xaa, 0x79, 0x8e,
+        0x52, 0x04, 0xdd, 0xba, 0x39, 0xa2, 0x58, 0x9c, 0x60, 0xd5, 0x96, 0x51, 0x42, 0xe2, 0xa5,
+        0x57, 0x58, 0xb4, 0x89, 0x2c, 0x94, 0xb9, 0xda, 0xe7, 0x93, 0x85, 0xda, 0x64, 0xa0, 0x52,
+        0xfc, 0x6b, 0xb1, 0x0a, 0xa8, 0x13, 0xd9, 0x84, 0xfb, 0x34, 0x77, 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, 0x46, 0xbd, 0xfc, 0xed, 0xa6, 0x94, 0x9a, 0xc4, 0x5e, 0x27, 0xcf, 0x24, 0x25,
+        0xc5, 0x0c, 0x7d, 0xed, 0x8f, 0x21, 0xe0, 0x47, 0x81, 0x5a, 0xdc, 0x3b, 0xd4, 0x9e, 0x13,
+        0xb6, 0x06, 0x36, 0x70, 0x22, 0x58, 0x20, 0x0a, 0xbd, 0xbc, 0x0d, 0x19, 0xba, 0xcc, 0xdc,
+        0x00, 0x64, 0x31, 0x4c, 0x84, 0x66, 0x1d, 0xfb, 0x50, 0xd0, 0xe3, 0xf8, 0x78, 0x9d, 0xf9,
+        0x77, 0x2b, 0x40, 0x6b, 0xb5, 0x8e, 0xd3, 0xf8, 0xa9, 0x23, 0x58, 0x21, 0x00, 0x9c, 0x42,
+        0x3f, 0x79, 0x76, 0xa0, 0xd1, 0x98, 0x58, 0xbb, 0x9b, 0x9e, 0xfb, 0x3b, 0x08, 0xf2, 0xe1,
+        0xa3, 0xfe, 0xf4, 0x21, 0x5b, 0x97, 0x2d, 0xcb, 0x9a, 0x55, 0x1a, 0x7f, 0xa7, 0xc1, 0xa8,
+        0xa6, 0x01, 0x02, 0x03, 0x26, 0x20, 0x01, 0x21, 0x58, 0x20, 0xef, 0xd3, 0x88, 0xc4, 0xbc,
+        0xce, 0x51, 0x4d, 0x4b, 0xd3, 0x81, 0x26, 0xc6, 0xcc, 0x66, 0x3b, 0x12, 0x38, 0xbf, 0x23,
+        0x7a, 0x2e, 0x7f, 0x82, 0xa7, 0x81, 0x74, 0x21, 0xc0, 0x12, 0x79, 0xf4, 0x22, 0x58, 0x20,
+        0xdc, 0x85, 0x6c, 0x1c, 0xcc, 0xf9, 0xf3, 0xe8, 0xff, 0x90, 0xfd, 0x89, 0x03, 0xf5, 0xaf,
+        0x75, 0xa0, 0x79, 0xbb, 0x53, 0x9a, 0x1f, 0x2b, 0x34, 0x86, 0x47, 0x3d, 0x66, 0x2a, 0x07,
+        0x3b, 0x1e, 0x23, 0x58, 0x20, 0x34, 0x7b, 0x15, 0xcc, 0xbf, 0x26, 0xc9, 0x28, 0x0e, 0xee,
+        0xc5, 0x47, 0xac, 0x00, 0xc4, 0x4d, 0x81, 0x2b, 0x1e, 0xac, 0x31, 0xd2, 0x6f, 0x36, 0x85,
+        0xe6, 0xa8, 0xf0, 0x46, 0xfc, 0xd2, 0x83, 0x58, 0x40, 0x55, 0x4c, 0x38, 0xdf, 0xfe, 0x49,
+        0xa8, 0xa0, 0xa5, 0x08, 0xce, 0x2f, 0xe5, 0xf6, 0x6e, 0x2b, 0xc2, 0x95, 0x39, 0xc8, 0xca,
+        0x77, 0xd6, 0xf6, 0x67, 0x24, 0x6b, 0x0e, 0x63, 0x5d, 0x11, 0x97, 0x26, 0x52, 0x30, 0xbc,
+        0x28, 0x1d, 0xbf, 0x2a, 0x3e, 0x8c, 0x90, 0x54, 0xaa, 0xaa, 0xd1, 0x7c, 0x53, 0x7b, 0x48,
+        0x1f, 0x51, 0x50, 0x6c, 0x32, 0xe1, 0x0f, 0x57, 0xea, 0x47, 0x76, 0x85, 0x0c, 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};
+
 // The challenge that is in kKeysToSignForCsrWithUdsCerts and kCsrWithUdsCerts
 inline const std::vector<uint8_t> kChallenge{0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
                                              0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
@@ -557,6 +627,18 @@
                              DEFAULT_INSTANCE_NAME));
 }
 
+TEST(RemoteProvUtils, validateDiceChainProper) {
+    auto result = isCsrWithProperDiceChain(kCsrWithUdsCerts, DEFAULT_INSTANCE_NAME);
+    ASSERT_TRUE(result) << result.message();
+    ASSERT_TRUE(*result) << "DICE Chain is degenerate";
+}
+
+TEST(RemoteProvUtils, validateDiceChainDegenerate) {
+    auto result = isCsrWithProperDiceChain(kCsrWithDegenerateDiceChain, DEFAULT_INSTANCE_NAME);
+    ASSERT_TRUE(result) << result.message();
+    ASSERT_FALSE(*result) << "DICE Chain is proper";
+}
+
 TEST(RemoteProvUtilsTest, requireUdsCertsWhenPresent) {
     auto [keysToSignPtr, _, errMsg] = cppbor::parse(kKeysToSignForCsrWithUdsCerts);
     ASSERT_TRUE(keysToSignPtr) << "Error: " << errMsg;