# Fuzzers for libcdm

## Table of contents
+ [policy_engine_fuzzer](#PolicyEngine)
+ [content_decryption_fuzzer](#ContentDecryption)
+ [system_id_extractor_fuzzer](#SystemIdExtractor)
+ [service_certificate_fuzzer](#ServiceCertificate)
+ [policy_timers_fuzzer](#PolicyTimers)
+ [privacy_crypto_fuzzer](#PrivacyCrypto)

# <a name="PolicyEngine"></a> Fuzzer for PolicyEngine

PolicyEngine supports the following parameters:
1. SigningKeyId (parameter name: "kSigningKeyId")
2. RenewalServerUrl (parameter name: "kRenewalServerUrl")
3. EntitlementKeyId (parameter name: "kEntitlementKeyId")

| Parameter| Valid Values| Configured Value|
|------------- |-------------| ----- |
|`kSigningKeyId`| `String` |Value obtained from FuzzedDataProvider|
|`kRenewalServerUrl`| `String` |Value obtained from FuzzedDataProvider|
|`kEntitlementKeyId`| `String` |Value obtained from FuzzedDataProvider|

#### Steps to run
1. Build the fuzzer
```
  $ mm -j$(nproc) policy_engine_fuzzer
```
2. Run on device
```
  $ adb sync data
  $ adb shell /data/fuzz/arm64/policy_engine_fuzzer/vendor/policy_engine_fuzzer
```

# <a name="ContentDecryption"></a> Fuzzer for ContentDecryption

ContentDecryption supports the following parameters:
1. Cert Authority (parameter name: "certAuthority")
2. Server Url (parameter name: "serverUrl")
3. Service Certificate (parameter name: "serviceCertificate")

| Parameter| Valid Values| Configured Value|
|------------- |-------------| ----- |
|`certAuthority`| `String` |Value obtained from FuzzedDataProvider|
|`serverUrl`| `String` |Value obtained from FuzzedDataProvider|
|`serviceCertificate`| `String` |Value obtained from FuzzedDataProvider|

#### Steps to run
1. Build the fuzzer
```
  $ mm -j$(nproc) content_decryption_fuzzer
```
2. Run on device
```
  $ adb sync data
  $ adb shell /data/fuzz/arm64/content_decryption_fuzzer/vendor/content_decryption_fuzzer
```

# <a name="SystemIdExtractor"></a> Fuzzer for SystemIdExtractor

SystemIdExtractor supports the following parameters:
1. OEM Cert (parameter name: "oemCert")
2. Key Data (parameter name: "keyData")
3. System Id (parameter name: "mSystemId")

| Parameter| Valid Values| Configured Value|
|------------- |-------------| ----- |
|`oemCert`| `String` |Value obtained from FuzzedDataProvider|
|`keyData`| `String` |Value obtained from FuzzedDataProvider|
|`mSystemId`| `Integer in range 0 to 256` |Value obtained from FuzzedDataProvider|

#### Steps to run
1. Build the fuzzer
```
  $ mm -j$(nproc) system_id_extractor_fuzzer
```
2. Run on device
```
  $ adb sync data
  $ adb shell /data/fuzz/arm64/system_id_extractor_fuzzer/vendor/system_id_extractor_fuzzer
```

# <a name="ServiceCertificate"></a> Fuzzer for ServiceCertificate

ServiceCertificate supports the following parameters:
1. Message (parameter name: "message")
2. Signature (parameter name: "signature")
3. Request (parameter name: "request")

| Parameter| Valid Values| Configured Value|
|------------- |-------------| ----- |
|`message`| `String` |Value obtained from FuzzedDataProvider|
|`signature`| `String` |Value obtained from FuzzedDataProvider|
|`request`| `String` |Value obtained from FuzzedDataProvider|

#### Steps to run
1. Build the fuzzer
```
  $ mm -j$(nproc) service_certificate_fuzzer
```
2. Run on device
```
  $ adb sync data
  $ adb shell /data/fuzz/arm64/service_certificate_fuzzer/vendor/service_certificate_fuzzer
```

# <a name="PolicyTimers"></a> Fuzzer for PolicyTimers

PolicyTimers supports the following parameters:
1. Seconds Since Last Played (parameter name: "secondsSinceLastPlayed")
2. Expiry Time (parameter name: "expiryTime")

| Parameter| Valid Values| Configured Value|
|------------- |-------------| ----- |
|`secondsSinceLastPlayed`| `Integer` |Value obtained from FuzzedDataProvider|
|`expiryTime`| `Interger` |Value obtained from FuzzedDataProvider|

#### Steps to run
1. Build the fuzzer
```
  $ mm -j$(nproc) policy_timers_fuzzer
```
2. Run on device
```
  $ adb sync data
  $ adb shell /data/fuzz/arm64/policy_timers_fuzzer/vendor/policy_timers_fuzzer
```

# <a name="PrivacyCrypto"></a> Fuzzer for PrivacyCrypto

PrivacyCrypto supports the following parameters:
1. Message (parameter name: "message")
2. Key (parameter name: "key")
3. Iv (parameter name: "iv")
4. Data (parameter name: 'data')
5. CertIndex (parameter name: 'certIndex')

| Parameter| Valid Values| Configured Value|
|------------- |-------------| ----- |
|`message`| `String` |Value obtained from FuzzedDataProvider|
|`key`| `String` |Value obtained from FuzzedDataProvider|
|`iv`| `String` |Value obtained from FuzzedDataProvider|
|`data`| `String` |Value obtained from FuzzedDataProvider|
|`certIndex`| `Integer` |Value obtained from FuzzedDataProvider|

#### Steps to run
1. Build the fuzzer
```
  $ mm -j$(nproc) privacy_crypto_fuzzer
```
2. Run on device
```
  $ adb sync data
  $ adb shell /data/fuzz/arm64/privacy_crypto_fuzzer/vendor/privacy_crypto_fuzzer