1 files changed, 72 insertions, 0 deletions
diff --git a/security/keymint/support/key_param_output.cpp b/security/keymint/support/key_param_output.cpp
new file mode 100644
index 0000000000..b699b2289e
--- /dev/null
+++ b/security/keymint/support/key_param_output.cpp
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <keymint_support/key_param_output.h>
+
+#include <iomanip>
+
+#include <keymint_support/keymint_tags.h>
+
+namespace android::hardware::security::keymint {
+
+using ::std::endl;
+using ::std::ostream;
+
+ostream& operator<<(ostream& os, const ::std::vector<KeyParameter>& set) {
+    if (set.size() == 0) {
+        os << "(Empty)" << endl;
+    } else {
+        os << "\n";
+        for (const auto& elem : set) os << elem << endl;
+    }
+    return os;
+}
+
+// TODO(seleneh) update this to a parsing that looks at each tags individually
+// such as ALGORITHM BLOCK_MODE when aidl union support is added.
+ostream& operator<<(ostream& os, const KeyParameter& param) {
+    os << param.tag << ": ";
+    switch (typeFromTag(param.tag)) {
+        case TagType::INVALID:
+            return os << " Invalid";
+        case TagType::ENUM_REP:
+        case TagType::ENUM:
+        case TagType::UINT_REP:
+        case TagType::UINT:
+            return os << param.integer;
+        case TagType::ULONG_REP:
+        case TagType::ULONG:
+        case TagType::DATE:
+            return os << param.longInteger;
+        case TagType::BOOL:
+            return os << "true";
+        case TagType::BIGNUM:
+            os << " Bignum: ";
+            for (size_t i = 0; i < param.blob.size(); ++i) {
+                os << std::hex << ::std::setw(2) << static_cast<int>(param.blob[i]) << ::std::dec;
+            }
+            return os;
+        case TagType::BYTES:
+            os << " Bytes: ";
+            for (size_t i = 0; i < param.blob.size(); ++i) {
+                os << ::std::hex << ::std::setw(2) << static_cast<int>(param.blob[i]) << ::std::dec;
+            }
+            return os;
+    }
+    return os << "UNKNOWN TAG TYPE!";
+}
+
+}  // namespace android::hardware::security::keymint