buildscript {
repositories {
google()
jcenter()
}

dependencies {
classpath 'com.android.tools.build:gradle:4.1.0'
}
}

rootProject.allprojects {
repositories {
google()
jcenter()
}
}

apply plugin: 'com.android.library'

android {
compileSdkVersion 30

lintOptions {
disable 'InvalidPackage'
}

defaultConfig {
minSdkVersion 24
}

dexOptions {
preDexLibraries = false
javaMaxHeapSize "4g"
additionalParameters =["--core-library"]
}

packagingOptions {
exclude 'META-INF/Digest.CP'
exclude 'META-INF/Sign.CP'
exclude 'META-INF/NOTICE.txt'
exclude 'META-INF/LICENSE.txt'
doNotStrip "*/arm64-v8a/*.so"
doNotStrip "*/armeabi/*.so"
doNotStrip "*/x86_64/*.so"
doNotStrip "*/x86/*.so"
}

lintOptions {
abortOnError false
}
}

dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation group: 'commons-io', name: 'commons-io', version: '2.5'
implementation group: 'com.googlecode.json-simple', name: 'json-simple', version: '1.1'
implementation 'org.apache.httpcomponents:httpclient:4.2.1'
implementation 'androidx.annotation:annotation:1.1.0'
}

[+2380 ms] E/AndroidRuntime(30222): FATAL EXCEPTION: main
[ ] E/AndroidRuntime(30222): Process: com.example.example, PID: 30222
[ ] E/AndroidRuntime(30222): java.lang.ExceptionInInitializerError
[ ] E/AndroidRuntime(30222): at ru.CryptoPro.JCSP.MSCAPI.CAPI.cryptEnumProviders(Native Method)
[ ] E/AndroidRuntime(30222): at ru.CryptoPro.JCSP.MSCAPI.t.a(Unknown Source:73)
[ ] E/AndroidRuntime(30222): at ru.CryptoPro.JCSP.MSCAPI.t.x(Unknown Source:18)
[ ] E/AndroidRuntime(30222): at f.a.c.o.a.e(Unknown Source:0)
[ ] E/AndroidRuntime(30222): at f.a.c.o.a.b(Unknown Source:0)
[ ] E/AndroidRuntime(30222): at f.a.c.o.b.run(Unknown Source:11)
[ ] E/AndroidRuntime(30222): at java.security.AccessController.doPrivileged(AccessController.java:43)
[ ] E/AndroidRuntime(30222): at f.a.c.o.a.c(Unknown Source:5)
[ ] E/AndroidRuntime(30222): at f.a.c.o.a.<clinit>(Unknown Source:17)
[ ] E/AndroidRuntime(30222): at f.a.c.o.a.k(Unknown Source:0)
[ ] E/AndroidRuntime(30222): at ru.CryptoPro.JCSP.MSCAPI.d.<clinit>(Unknown Source:0)
[ ] E/AndroidRuntime(30222): at f.a.c.f.D(Unknown Source:0)
[ ] E/AndroidRuntime(30222): at f.a.c.f.y(Unknown Source:63)
[ +1 ms] E/AndroidRuntime(30222): at f.a.c.f.<init>(Unknown Source:18)
[ +1 ms] E/AndroidRuntime(30222): at f.c.a.a.e(Unknown Source:25)
[ ] E/AndroidRuntime(30222): at f.c.a.a.f(Unknown Source:58)
[ ] E/AndroidRuntime(30222): at d.a.c.a.j$a.a(Unknown Source:17)
[ ] E/AndroidRuntime(30222): at io.flutter.embedding.engine.e.b.d(Unknown Source:57)
[ ] E/AndroidRuntime(30222): at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(Unknown Source:4)
[ +1 ms] E/AndroidRuntime(30222): at android.os.MessageQueue.nativePollOnce(Native Method)
[ ] E/AndroidRuntime(30222): at android.os.MessageQueue.next(MessageQueue.java:335)
[ ] E/AndroidRuntime(30222): at android.os.Looper.loop(Looper.java:193)
[ ] E/AndroidRuntime(30222): at android.app.ActivityThread.main(ActivityThread.java:8060)
[ ] E/AndroidRuntime(30222): at java.lang.reflect.Method.invoke(Native Method)
[ ] E/AndroidRuntime(30222): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:656)
[ ] E/AndroidRuntime(30222): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:967)
[ ] E/AndroidRuntime(30222): Caused by: java.lang.RuntimeException: java.lang.NoSuchFieldException: No field INSTANCE in class Lf/a/c/c; (declaration of 'f.a.c.c'
appears in /data/app/~~SSD67cGD-zVbbVQaKoNuug==/com.example.example-TtmU6KhDXcT35VPQIMjbdA==/base.apk)
[ +1 ms] E/AndroidRuntime(30222): at ru.CryptoPro.JCSP.MSCAPI.CAPI.b(Unknown Source:86)
[ ] E/AndroidRuntime(30222): at ru.CryptoPro.JCSP.MSCAPI.CAPI.<clinit>(Unknown Source:17)
[ ] E/AndroidRuntime(30222): ... 26 more
[ ] E/AndroidRuntime(30222): Caused by: java.lang.NoSuchFieldException: No field INSTANCE in class Lf/a/c/c; (declaration of 'f.a.c.c' appears in
/data/app/~~SSD67cGD-zVbbVQaKoNuug==/com.example.example-TtmU6KhDXcT35VPQIMjbdA==/base.apk)
[ +1 ms] E/AndroidRuntime(30222): at java.lang.Class.getDeclaredField(Native Method)
[ ] E/AndroidRuntime(30222): at ru.CryptoPro.JCSP.MSCAPI.CAPI.b(Unknown Source:8)
[ ] E/AndroidRuntime(30222): ... 27 more

if (keyStorePFX.isKeyEntry(aliasPFX))

if (keyStorePFX.isKeyEntry(aliasPFX))

KeyStore keyStorePFX = KeyStore.getInstance(JCSP.PFX_STORE_NAME, JCSP.PROVIDER_NAME);
InputStream fileInputStream = new FileInputStream(context.getFilesDir().getParent() + "s.pfx");

keyStorePFX.load(fileInputStream, password.toCharArray());

String alias = null;
Enumeration<String> aliasesPFX = keyStorePFX.aliases();

while (aliasesPFX.hasMoreElements()) {
String aliasPFX = aliasesPFX.nextElement();
log.info("aliasPFX" + aliasPFX);
if (keyStorePFX.isKeyEntry(aliasPFX))
alias = aliasPFX;
}

PrivateKey privateKey = (PrivateKey) keyStorePFX.getKey(alias, password.toCharArray()); 
signature.initSign(privateKey);

I/(11282): java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.String java.security.PrivateKey.getAlgorithm()' on a null object reference
I/(11282): at ru.CryptoPro.JCSP.Sign.CryptoProSign.engineInitSign(Unknown Source:7)
I/(11282): at java.security.Signature.initSign(Signature.java:679)