Hey guys i'm having trouble with a jni interface to OpenSSL.
This is my Java:
public class nativeBF {
public native void nativeRun();
public void nCall(){
nativeRun();
}
static {
//Load the shared library
System.loadLibrary ( "nativebf" ) ;
}
}
This is my C. (I took this from a post somewhere here on OpenSSL
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//Old version = /usr/local/ .. /include/blowfish.h.
#include <openssl/blowfish.h>
void decrypt(char *inbuf, char *outbuf, int blklen, char *key)
{
int counter = 0;
char iv[8];
BF_KEY keyStruct;
memset(iv, 0, 8);
BF_set_key(&keyStruct, strlen(key), key);
BF_cfb64_encrypt(inbuf, outbuf, blklen, &keyStruct, iv, &counter,
BF_DECRYPT);
}
void encrypt(char *inbuf, char *outbuf, int blklen, char *key)
{
int counter = 0;
char iv[8];
BF_KEY keyStruct;
memset(iv, 0, 8);
BF_set_key(&keyStruct, strlen(key), key);
BF_cfb64_encrypt(inbuf, outbuf, blklen, &keyStruct, iv, &counter,
BF_ENCRYPT);
}
JNIEXPORT void JNICALL
Java_nativeBF_nativeRun(JNIEnv* env, jobject thisObj){
//Manually add env and thisObj (javah bug ? )
char *plain, *key1, *key2;
char *enc;
char *dec;
int len;
txtToEncrypt = "Testing 1"; //What to encrypt
len = strlen(txtToEncrypt);
key1 = "key";
key2 = "keykey";
enc = malloc(len+1); //cipher routines
enc[len] = '\0';
dec = malloc(len+1);
dec[len] = '\0';
encrypt(txtToEncrypt, enc, len, key1); //Encrypt txtToEncryptt using
enc with key1
decrypt(enc, dec, len, key2); //Decrypt enc(txtToEncrypt) using key2
}
And this is my header file.
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class nativeBF */
#ifndef _Included_nativeBF
#define _Included_nativeBF
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: nativeBF
* Method: nativeRun
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_nativeBF_nativeRun
(JNIEnv *, jobject);
#ifdef __cplusplus
}
#endif
#endif
This is the error generated.
java nativeBF
Exception in thread "main"
java.lang.UnsatisfiedLinkError:
/home/mcx/Programming/Eclipse/project/lib/libnativebf.so:
/home/mcx/Programming/Eclipse/project/lib/libnativebf.so: undefined symbol:
BF_set_key
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1586)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1511)
at java.lang.Runtime.loadLibrary0(Runtime.java:788)
at java.lang.System.loadLibrary(System.java:834)
at nativeBF.<clinit>(nativeBF.java:13)
Can anyone please shed some light on this ? Its much appreciated.
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