identity: Make NoS libeic and AOSP libeic align
1. Add input parameter buffer size for CBOR data encoding
because Nugget OS protobuf buffer is not null terminated.
2. Modify some libeic APIs to align with NoS libeic.
Bug: 198403263
Test: atest VtsHalIdentityTargetTest
atest android.security.identity.cts
Change-Id: I9bc3689da2571c0925972f33b7314cbaaad0e28d
diff --git a/identity/aidl/default/libeic/EicCommon.h b/identity/aidl/default/libeic/EicCommon.h
new file mode 100644
index 0000000..476276e
--- /dev/null
+++ b/identity/aidl/default/libeic/EicCommon.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2020, 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.
+ */
+
+#if !defined(EIC_INSIDE_LIBEIC_H) && !defined(EIC_COMPILATION)
+#error "Never include this file directly, include libeic.h instead."
+#endif
+
+#ifndef ANDROID_HARDWARE_IDENTITY_EIC_COMMON_H
+#define ANDROID_HARDWARE_IDENTITY_EIC_COMMON_H
+
+// Feature version 202009:
+//
+// CredentialKeys = [
+// bstr, ; storageKey, a 128-bit AES key
+// bstr, ; credentialPrivKey, the private key for credentialKey
+// ]
+//
+// Feature version 202101:
+//
+// CredentialKeys = [
+// bstr, ; storageKey, a 128-bit AES key
+// bstr, ; credentialPrivKey, the private key for credentialKey
+// bstr ; proofOfProvisioning SHA-256
+// ]
+//
+// where storageKey is 16 bytes, credentialPrivateKey is 32 bytes, and proofOfProvisioning
+// SHA-256 is 32 bytes.
+#define EIC_CREDENTIAL_KEYS_CBOR_SIZE_FEATURE_VERSION_202009 52
+#define EIC_CREDENTIAL_KEYS_CBOR_SIZE_FEATURE_VERSION_202101 86
+
+#endif // ANDROID_HARDWARE_IDENTITY_EIC_COMMON_H