_ Git - ldk-java/blob - src/main/java/org/ldk/structs/EntropySource.java

   1 package org.ldk.structs;
   2
   3 import org.ldk.impl.bindings;
   4 import org.ldk.enums.*;
   5 import org.ldk.util.*;
   6 import java.util.Arrays;
   7 import java.lang.ref.Reference;
   8 import javax.annotation.Nullable;
   9
  10 /**
  11  * A trait that describes a source of entropy.
  12  */
  13 @SuppressWarnings("unchecked") // We correctly assign various generic arrays
  14 public class EntropySource extends CommonBase {
  15         final bindings.LDKEntropySource bindings_instance;
  16         EntropySource(Object _dummy, long ptr) { super(ptr); bindings_instance = null; }
  17         private EntropySource(bindings.LDKEntropySource arg) {
  18                 super(bindings.LDKEntropySource_new(arg));
  19                 this.ptrs_to.add(arg);
  20                 this.bindings_instance = arg;
  21         }
  22         @Override @SuppressWarnings("deprecation")
  23         protected void finalize() throws Throwable {
  24                 if (ptr != 0) { bindings.EntropySource_free(ptr); } super.finalize();
  25         }
  26         /**
  27          * Destroys the object, freeing associated resources. After this call, any access
  28          * to this object may result in a SEGFAULT or worse.
  29          *
  30          * You should generally NEVER call this method. You should let the garbage collector
  31          * do this for you when it finalizes objects. However, it may be useful for types
  32          * which represent locks and should be closed immediately to avoid holding locks
  33          * until the GC runs.
  34          */
  35         public void destroy() {
  36                 if (ptr != 0) { bindings.EntropySource_free(ptr); }
  37                 ptr = 0;
  38         }
  39         public static interface EntropySourceInterface {
  40                 /**
  41                  * Gets a unique, cryptographically-secure, random 32-byte value. This method must return a
  42                  * different value each time it is called.
  43                  */
  44                 byte[] get_secure_random_bytes();
  45         }
  46         private static class LDKEntropySourceHolder { EntropySource held; }
  47         public static EntropySource new_impl(EntropySourceInterface arg) {
  48                 final LDKEntropySourceHolder impl_holder = new LDKEntropySourceHolder();
  49                 impl_holder.held = new EntropySource(new bindings.LDKEntropySource() {
  50                         @Override public byte[] get_secure_random_bytes() {
  51                                 byte[] ret = arg.get_secure_random_bytes();
  52                                 Reference.reachabilityFence(arg);
  53                                 byte[] result = InternalUtils.check_arr_len(ret, 32);
  54                                 return result;
  55                         }
  56                 });
  57                 return impl_holder.held;
  58         }
  59         /**
  60          * Gets a unique, cryptographically-secure, random 32-byte value. This method must return a
  61          * different value each time it is called.
  62          */
  63         public byte[] get_secure_random_bytes() {
  64                 byte[] ret = bindings.EntropySource_get_secure_random_bytes(this.ptr);
  65                 Reference.reachabilityFence(this);
  66                 return ret;
  67         }
  68
  69 }