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Added initial JNI wrapper.

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This commit is contained in:
gardners 2011-10-21 10:56:49 +10:30
parent 1fb83dbf0d
commit 58446ba5e5
2 changed files with 49 additions and 1 deletions
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3
Android-without-NaCl.mk
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@ -25,7 +25,8 @@ LOCAL_SRC_FILES:= \
hlrdata.c \
peers.c \
randombytes.c \
simulate.c
simulate.c \
jni.c
LOCAL_MODULE:= dnalib

47
jni.c Normal file
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@ -0,0 +1,47 @@
#include <jni.h>
#include "crypto_box_curve25519xsalsa20poly1305.h"
JNIEXPORT jobject JNICALL
Java_to_yp_cr_nacl_crypto_box_keypair(JNIEnv * env, jobject obj)
{
unsigned char pk[crypto_box_curve25519xsalsa20poly1305_ref_PUBLICKEYBYTES];
unsigned char sk[crypto_box_curve25519xsalsa20poly1305_ref_PUBLICKEYBYTES];
if (crypto_box_curve25519xsalsa20poly1305_ref_keypair(pk,sk)) return NULL;
jclass mapClass = (*env)->FindClass(env, "java/util/HashMap");
if(mapClass == NULL)
{
return NULL;
}
jsize map_len = 1;
jmethodID init = (*env)->GetMethodID(env, mapClass, "<init>", "(I)V");
jobject hashMap = (*env)->NewObject(env, mapClass, init, map_len);
jmethodID put = (*env)->GetMethodID(env, mapClass, "put",
"(ILjava/lang/Object;)Ljava/lang/Object;");
jbyteArray jpk = (*env)->NewByteArray(env, crypto_box_curve25519xsalsa20poly1305_ref_PUBLICKEYBYTES);
jbyteArray jsk = (*env)->NewByteArray(env, crypto_box_curve25519xsalsa20poly1305_ref_SECRETKEYBYTES);
/* Get java side versions of pk and sk */
(*env)->SetByteArrayRegion(env, jpk, 0, crypto_box_curve25519xsalsa20poly1305_ref_PUBLICKEYBYTES, pk);
(*env)->SetByteArrayRegion(env, jsk, 0, crypto_box_curve25519xsalsa20poly1305_ref_SECRETKEYBYTES, sk);
/* Store in hash map */
jobject pkkey = (*env)->NewStringUTF(env,"public_key");
(*env)->CallObjectMethod(env, hashMap, put, pkkey, jpk);
jobject skkey= (*env)->NewStringUTF(env,"secret_key");
(*env)->CallObjectMethod(env, hashMap, put, skkey, jsk);
/* get rid of local reference counts for things we have put in the hash map */
(*env)->DeleteLocalRef(env, pkkey);
(*env)->DeleteLocalRef(env, skkey);
(*env)->DeleteLocalRef(env, jpk);
(*env)->DeleteLocalRef(env, jsk);
return hashMap;
}