keystore: Add SOTER support in keystore

Get and append the ASK key blob to the params set for SOTER.

Change-Id: Id4d935af5b62e01727eeb23e72e31b5c00bd2587

1 files changed, 25 insertions, 0 deletions

diff --git a/keystore/keystore.cpp b/keystore/keystore.cpp
index 8f276f5..e9fa408 100644
--- a/keystore/keystore.cpp
+++ b/keystore/keystore.cpp
@@ -2433,6 +2433,31 @@ public:
         const keymaster1_device_t* device = mKeyStore->getDevice();
         const keymaster1_device_t* fallback = mKeyStore->getFallbackDevice();
         std::vector<keymaster_key_param_t> opParams(params.params);
+
+        for (auto param: params.params)
+        {
+            switch (param.tag) {
+                case KM_TAG_SOTER_AUTO_SIGNED_COMMON_KEY_WHEN_GET_PUBLIC_KEY:
+                {
+                    uid_t callingUid = IPCThreadState::self()->getCallingUid();
+                    Blob keyBlob;
+                    String8 name8(reinterpret_cast<const char*>(param.blob.data));
+                    ResponseCode responseCode = mKeyStore->getKeyForName(&keyBlob,
+                            name8, callingUid, TYPE_KEYMASTER_10);
+                    if (responseCode != ::NO_ERROR) {
+                        return responseCode;
+                    }
+                    opParams.push_back(keymaster_param_blob(
+                            KM_TAG_SOTER_AUTO_SIGNED_COMMON_KEY_WHEN_GET_PUBLIC_KEY_BLOB,
+                            keyBlob.getValue(),
+                            keyBlob.getLength()));
+                    break;
+                }
+                default:
+                    break;
+            }
+        }
+
         const keymaster_key_param_set_t inParams = {opParams.data(), opParams.size()};
         if (device == NULL) {
             return ::SYSTEM_ERROR;