273 lines
7.3 KiB
C
273 lines
7.3 KiB
C
/* com_wolfssl_WolfCryptRSA.c
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*
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* Copyright (C) 2006-2025 wolfSSL Inc.
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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#include <stdio.h>
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#ifdef WOLFSSL_USER_SETTINGS
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#include <wolfssl/wolfcrypt/settings.h>
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#else
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#include <wolfssl/options.h>
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#endif
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#include <wolfssl/wolfcrypt/rsa.h>
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#include "com_wolfssl_WolfCryptRSA.h"
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JNIEXPORT jint JNICALL Java_com_wolfssl_WolfCryptRSA_doSign
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(JNIEnv* jenv, jobject jcl, jobject in, jlong inSz, jobject out,
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jintArray outSz, jobject keyDer, jlong keySz)
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{
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int ret;
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WC_RNG rng;
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RsaKey myKey;
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unsigned int idx;
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unsigned int tmpOut;
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unsigned char* inBuf = NULL;
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unsigned char* outBuf = NULL;
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unsigned char* keyBuf = NULL;
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(void)jcl;
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/* check in and key sz */
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if ((inSz < 0) || (keySz < 0)) {
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return -1;
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}
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/* get pointers to our buffers */
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inBuf = (*jenv)->GetDirectBufferAddress(jenv, in);
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if (inBuf == NULL) {
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printf("problem getting in buffer address\n");
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return -1;
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}
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outBuf = (*jenv)->GetDirectBufferAddress(jenv, out);
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if (outBuf == NULL) {
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printf("problem getting out buffer address\n");
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return -1;
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}
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keyBuf = (*jenv)->GetDirectBufferAddress(jenv, keyDer);
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if (keyBuf == NULL) {
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printf("problem getting key buffer address\n");
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return -1;
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}
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/* get output buffer size */
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(*jenv)->GetIntArrayRegion(jenv, outSz, 0, 1, (jint*)&tmpOut);
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wc_InitRng(&rng);
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wc_InitRsaKey(&myKey, NULL);
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idx = 0;
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ret = wc_RsaPrivateKeyDecode(keyBuf, &idx, &myKey, (unsigned int)keySz);
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if (ret == 0) {
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ret = wc_RsaSSL_Sign(inBuf, (unsigned int)inSz, outBuf, tmpOut,
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&myKey, &rng);
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if (ret > 0) {
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/* save and convert to 0 for success */
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tmpOut = ret;
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(*jenv)->SetIntArrayRegion(jenv, outSz, 0, 1, (jint*)&tmpOut);
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ret = 0;
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}
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} else {
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printf("wc_RsaPrivateKeyDecode failed, ret = %d\n", ret);
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}
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wc_FreeRsaKey(&myKey);
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return ret;
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}
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JNIEXPORT jint JNICALL Java_com_wolfssl_WolfCryptRSA_doVerify
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(JNIEnv* jenv, jobject jcl, jobject sig, jlong sigSz, jobject out,
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jlong outSz, jobject keyDer, jlong keySz)
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{
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int ret;
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RsaKey myKey;
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unsigned int idx;
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unsigned char* sigBuf = NULL;
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unsigned char* outBuf = NULL;
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unsigned char* keyBuf = NULL;
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(void)jcl;
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/* check in and key sz */
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if ((sigSz < 0) || (keySz < 0) || (outSz < 0)) {
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return -1;
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}
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/* get pointers to our buffers */
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sigBuf = (*jenv)->GetDirectBufferAddress(jenv, sig);
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if (sigBuf == NULL) {
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printf("problem getting sig buffer address\n");
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return -1;
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}
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outBuf = (*jenv)->GetDirectBufferAddress(jenv, out);
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if (outBuf == NULL) {
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printf("problem getting out buffer address\n");
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return -1;
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}
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keyBuf = (*jenv)->GetDirectBufferAddress(jenv, keyDer);
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if (keyBuf == NULL) {
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printf("problem getting key buffer address\n");
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return -1;
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}
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wc_InitRsaKey(&myKey, NULL);
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idx = 0;
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ret = wc_RsaPublicKeyDecode(keyBuf, &idx, &myKey, (unsigned int)keySz);
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if (ret == 0) {
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ret = wc_RsaSSL_Verify(sigBuf, (unsigned int)sigSz, outBuf,
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(unsigned int)outSz, &myKey);
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if (ret < 0) {
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printf("wc_RsaSSL_Verify failed, ret = %d\n", ret);
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return ret;
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}
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} else {
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printf("wc_RsaPublicKeyDecode failed, ret = %d\n", ret);
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}
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wc_FreeRsaKey(&myKey);
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return ret;
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}
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JNIEXPORT jint JNICALL Java_com_wolfssl_WolfCryptRSA_doEnc
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(JNIEnv* jenv, jobject jcl, jobject in, jlong inSz, jobject out,
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jintArray outSz, jobject keyDer, jlong keySz)
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{
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int ret;
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RsaKey myKey;
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WC_RNG rng;
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unsigned int idx;
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unsigned int tmpOut;
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unsigned char* inBuf = NULL;
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unsigned char* outBuf = NULL;
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unsigned char* keyBuf = NULL;
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(void)jcl;
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/* check in and key sz */
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if ((inSz < 0) || (keySz < 0)) {
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return -1;
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}
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/* get pointers to our buffers */
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inBuf = (*jenv)->GetDirectBufferAddress(jenv, in);
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if (inBuf == NULL) {
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printf("problem getting in buffer address\n");
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return -1;
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}
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outBuf = (*jenv)->GetDirectBufferAddress(jenv, out);
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if (outBuf == NULL) {
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printf("problem getting out buffer address\n");
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return -1;
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}
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keyBuf = (*jenv)->GetDirectBufferAddress(jenv, keyDer);
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if (keyBuf == NULL) {
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printf("problem getting key buffer address\n");
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return -1;
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}
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/* get output buffer size */
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(*jenv)->GetIntArrayRegion(jenv, outSz, 0, 1, (jint*)&tmpOut);
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wc_InitRng(&rng);
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wc_InitRsaKey(&myKey, NULL);
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idx = 0;
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ret = wc_RsaPublicKeyDecode(keyBuf, &idx, &myKey, (unsigned int)keySz);
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if (ret == 0) {
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ret = wc_RsaPublicEncrypt(inBuf, (unsigned int)inSz, outBuf, tmpOut,
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&myKey, &rng);
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if (ret > 0) {
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/* save and convert to 0 for success */
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(*jenv)->SetIntArrayRegion(jenv, outSz, 0, 1, (jint*)&ret);
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ret = 0;
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}
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} else {
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printf("wc_RsaPublicKeyDecode failed, ret = %d\n", ret);
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}
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wc_FreeRsaKey(&myKey);
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return ret;
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}
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JNIEXPORT jint JNICALL Java_com_wolfssl_WolfCryptRSA_doDec
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(JNIEnv* jenv, jobject jcl, jobject in, jlong inSz, jobject out,
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jlong outSz, jobject keyDer, jlong keySz)
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{
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int ret;
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RsaKey myKey;
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unsigned int idx;
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unsigned char* inBuf = NULL;
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unsigned char* outBuf = NULL;
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unsigned char* keyBuf = NULL;
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(void)jcl;
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/* check in and key sz */
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if ((inSz < 0) || (keySz < 0) || (outSz < 0)) {
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return -1;
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}
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/* get pointers to our buffers */
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inBuf = (*jenv)->GetDirectBufferAddress(jenv, in);
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if (inBuf == NULL) {
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printf("problem getting in buffer address\n");
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return -1;
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}
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outBuf = (*jenv)->GetDirectBufferAddress(jenv, out);
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if (outBuf == NULL) {
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printf("problem getting out buffer address\n");
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return -1;
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}
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keyBuf = (*jenv)->GetDirectBufferAddress(jenv, keyDer);
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if (keyBuf == NULL) {
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printf("problem getting key buffer address\n");
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return -1;
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}
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wc_InitRsaKey(&myKey, NULL);
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idx = 0;
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ret = wc_RsaPrivateKeyDecode(keyBuf, &idx, &myKey, (unsigned int)keySz);
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if (ret == 0) {
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ret = wc_RsaPrivateDecrypt(inBuf, (unsigned int)inSz, outBuf,
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(unsigned int)outSz, &myKey);
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if (ret < 0) {
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printf("wc_RsaPrivateDecrypt failed, ret = %d\n", ret);
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return ret;
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}
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} else {
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printf("wc_RsaPrivateKeyDecode failed, ret = %d\n", ret);
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}
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wc_FreeRsaKey(&myKey);
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return ret;
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}
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