Update fuzz tests

Several updates to fuzz tests, including
http://go/wvgerrit/124043
Add documentation for partners to run fuzzing

http://go/wvgerrit/128224
Fix generic verify fuzz script

http://go/wvgerrit/120507
Fuzzing: Add fuzzer for reportusage API

http://go/wvgerrit/120503
Fuzzing: Add fuzzer for deactivate usageentry API

http://go/wvgerrit/120463
Fuzzing: Add logic to exit fuzzer script

http://go/wvgerrit/120444
Fuzzing: Add fuzzer for loadusageentry API

Bug: 183154879
Bug: 202994773
Bug: 186785830
Test: test only code
Change-Id: I877681461824c51bc82f0766a9973378aafadba7

libwvdrmengine/oemcrypto/test/fuzz_tests/oemcrypto_fuzz_structs.h

@@ -4,6 +4,9 @@
 #ifndef OEMCRYPTO_FUZZ_STRUCTS_H_
 #define OEMCRYPTO_FUZZ_STRUCTS_H_
 
+#include "core_message_types.h"
+#include "odk.h"
+
 namespace wvoec {
 struct OEMCrypto_Renewal_Response_Fuzz {
   // Timer limits in core license response needs to be fuzzed as load renewal
@@ -37,6 +40,34 @@ struct OEMCrypto_Decrypt_Cenc_Fuzz {
   // Sample data and subsample data are of variable length and not included in
   // this structure.
 };
+
+struct OEMCrypto_Generic_Api_Fuzz {
+  // Corpus format is as below, let | be separator.
+  // cipher_mode + algorithm + iv | buffer with actual data
+  OEMCryptoCipherMode cipher_mode;
+  OEMCrypto_Algorithm algorithm;
+  // iv and buffer data are of variable length and not included in
+  // this structure.
+};
+
+struct OEMCrypto_Generic_Verify_Fuzz {
+  // Corpus format is as belowr.
+  // cipher_mode + algorithm + signature_length + buffer with actual data
+  OEMCryptoCipherMode cipher_mode;
+  OEMCrypto_Algorithm algorithm;
+  size_t signature_length;
+  // Buffer data is of variable length and not included in
+  // this structure.
+};
+
+struct OEMCrypto_Generate_RSA_Signature_Fuzz {
+  // Corpus format is as below, let | be separator.
+  // padding_scheme + signature_length + input buffer
+  RSA_Padding_Scheme padding_scheme;
+  size_t signature_length;
+  // input buffer data is of variable length and not included in
+  // this structure.
+};
 }  // namespace wvoec
 
 #endif  // OEMCRYPTO_FUZZ_STRUCTS_H_