Java example source code file (security.cpp)
The security.cpp Java example source code/*
* Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
//=--------------------------------------------------------------------------=
// security.cpp by Stanley Man-Kit Ho
//=--------------------------------------------------------------------------=
//
#include <jni.h>
#include <stdlib.h>
#include <windows.h>
#include <BaseTsd.h>
#include <wincrypt.h>
#include <stdio.h>
#define OID_EKU_ANY "2.5.29.37.0"
#define CERTIFICATE_PARSING_EXCEPTION \
"java/security/cert/CertificateParsingException"
#define INVALID_KEY_EXCEPTION \
"java/security/InvalidKeyException"
#define KEY_EXCEPTION "java/security/KeyException"
#define KEYSTORE_EXCEPTION "java/security/KeyStoreException"
#define PROVIDER_EXCEPTION "java/security/ProviderException"
#define SIGNATURE_EXCEPTION "java/security/SignatureException"
extern "C" {
/*
* Throws an arbitrary Java exception.
* The exception message is a Windows system error message.
*/
void ThrowException(JNIEnv *env, char *exceptionName, DWORD dwError)
{
char szMessage[1024];
szMessage[0] = '\0';
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, dwError, NULL, szMessage,
1024, NULL);
jclass exceptionClazz = env->FindClass(exceptionName);
env->ThrowNew(exceptionClazz, szMessage);
}
/*
* Maps the name of a hash algorithm to an algorithm identifier.
*/
ALG_ID MapHashAlgorithm(JNIEnv *env, jstring jHashAlgorithm) {
const char* pszHashAlgorithm = NULL;
ALG_ID algId = 0;
pszHashAlgorithm = env->GetStringUTFChars(jHashAlgorithm, NULL);
if ((strcmp("SHA", pszHashAlgorithm) == 0) ||
(strcmp("SHA1", pszHashAlgorithm) == 0) ||
(strcmp("SHA-1", pszHashAlgorithm) == 0)) {
algId = CALG_SHA1;
} else if (strcmp("SHA1+MD5", pszHashAlgorithm) == 0) {
algId = CALG_SSL3_SHAMD5; // a 36-byte concatenation of SHA-1 and MD5
} else if (strcmp("SHA-256", pszHashAlgorithm) == 0) {
algId = CALG_SHA_256;
} else if (strcmp("SHA-384", pszHashAlgorithm) == 0) {
algId = CALG_SHA_384;
} else if (strcmp("SHA-512", pszHashAlgorithm) == 0) {
algId = CALG_SHA_512;
} else if (strcmp("MD5", pszHashAlgorithm) == 0) {
algId = CALG_MD5;
} else if (strcmp("MD2", pszHashAlgorithm) == 0) {
algId = CALG_MD2;
}
if (pszHashAlgorithm)
env->ReleaseStringUTFChars(jHashAlgorithm, pszHashAlgorithm);
return algId;
}
/*
* Returns a certificate chain context given a certificate context and key
* usage identifier.
*/
bool GetCertificateChain(LPSTR lpszKeyUsageIdentifier, PCCERT_CONTEXT pCertContext, PCCERT_CHAIN_CONTEXT* ppChainContext)
{
CERT_ENHKEY_USAGE EnhkeyUsage;
CERT_USAGE_MATCH CertUsage;
CERT_CHAIN_PARA ChainPara;
DWORD dwFlags = 0;
LPSTR szUsageIdentifierArray[1];
szUsageIdentifierArray[0] = lpszKeyUsageIdentifier;
EnhkeyUsage.cUsageIdentifier = 1;
EnhkeyUsage.rgpszUsageIdentifier = szUsageIdentifierArray;
CertUsage.dwType = USAGE_MATCH_TYPE_AND;
CertUsage.Usage = EnhkeyUsage;
ChainPara.cbSize = sizeof(CERT_CHAIN_PARA);
ChainPara.RequestedUsage=CertUsage;
// Build a chain using CertGetCertificateChain
// and the certificate retrieved.
return (::CertGetCertificateChain(NULL, // use the default chain engine
pCertContext, // pointer to the end certificate
NULL, // use the default time
NULL, // search no additional stores
&ChainPara, // use AND logic and enhanced key usage
// as indicated in the ChainPara
// data structure
dwFlags,
NULL, // currently reserved
ppChainContext) == TRUE); // return a pointer to the chain created
}
/////////////////////////////////////////////////////////////////////////////
//
/*
* Class: sun_security_mscapi_PRNG
* Method: generateSeed
* Signature: (I[B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_sun_security_mscapi_PRNG_generateSeed
(JNIEnv *env, jclass clazz, jint length, jbyteArray seed)
{
HCRYPTPROV hCryptProv = NULL;
BYTE* pbData = NULL;
jbyte* reseedBytes = NULL;
jbyte* seedBytes = NULL;
jbyteArray result = NULL;
__try
{
// Acquire a CSP context.
if(::CryptAcquireContext(
&hCryptProv,
NULL,
NULL,
PROV_RSA_FULL,
CRYPT_VERIFYCONTEXT) == FALSE)
{
ThrowException(env, PROVIDER_EXCEPTION, GetLastError());
__leave;
}
/*
* If length is negative then use the supplied seed to re-seed the
* generator and return null.
* If length is non-zero then generate a new seed according to the
* requested length and return the new seed.
* If length is zero then overwrite the supplied seed with a new
* seed of the same length and return the seed.
*/
if (length < 0) {
length = env->GetArrayLength(seed);
reseedBytes = env->GetByteArrayElements(seed, 0);
if (::CryptGenRandom(
hCryptProv,
length,
(BYTE *) reseedBytes) == FALSE) {
ThrowException(env, PROVIDER_EXCEPTION, GetLastError());
__leave;
}
result = NULL;
} else if (length > 0) {
pbData = new BYTE[length];
if (::CryptGenRandom(
hCryptProv,
length,
pbData) == FALSE) {
ThrowException(env, PROVIDER_EXCEPTION, GetLastError());
__leave;
}
result = env->NewByteArray(length);
env->SetByteArrayRegion(result, 0, length, (jbyte*) pbData);
} else { // length == 0
length = env->GetArrayLength(seed);
seedBytes = env->GetByteArrayElements(seed, 0);
if (::CryptGenRandom(
hCryptProv,
length,
(BYTE *) seedBytes) == FALSE) {
ThrowException(env, PROVIDER_EXCEPTION, GetLastError());
__leave;
}
result = seed; // seed will be updated when seedBytes gets released
}
}
__finally
{
//--------------------------------------------------------------------
// Clean up.
if (reseedBytes)
env->ReleaseByteArrayElements(seed, reseedBytes, JNI_ABORT);
if (pbData)
delete [] pbData;
if (seedBytes)
env->ReleaseByteArrayElements(seed, seedBytes, 0); // update orig
if (hCryptProv)
::CryptReleaseContext(hCryptProv, 0);
}
return result;
}
/*
* Class: sun_security_mscapi_KeyStore
* Method: loadKeysOrCertificateChains
* Signature: (Ljava/lang/String;Ljava/util/Collection;)V
*/
JNIEXPORT void JNICALL Java_sun_security_mscapi_KeyStore_loadKeysOrCertificateChains
(JNIEnv *env, jobject obj, jstring jCertStoreName, jobject jCollections)
{
/**
* Certificate in cert store has enhanced key usage extension
* property (or EKU property) that is not part of the certificate itself. To determine
* if the certificate should be returned, both the enhanced key usage in certificate
* extension block and the extension property stored along with the certificate in
* certificate store should be examined. Otherwise, we won't be able to determine
* the proper key usage from the Java side because the information is not stored as
* part of the encoded certificate.
*/
const char* pszCertStoreName = NULL;
HCERTSTORE hCertStore = NULL;
PCCERT_CONTEXT pCertContext = NULL;
char* pszNameString = NULL; // certificate's friendly name
DWORD cchNameString = 0;
__try
{
// Open a system certificate store.
pszCertStoreName = env->GetStringUTFChars(jCertStoreName, NULL);
if ((hCertStore = ::CertOpenSystemStore(NULL, pszCertStoreName))
== NULL) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Determine clazz and method ID to generate certificate
jclass clazzArrayList = env->FindClass("java/util/ArrayList");
jmethodID mNewArrayList = env->GetMethodID(clazzArrayList, "<init>", "()V");
jmethodID mGenCert = env->GetMethodID(env->GetObjectClass(obj),
"generateCertificate",
"([BLjava/util/Collection;)V");
// Determine method ID to generate certificate chain
jmethodID mGenCertChain = env->GetMethodID(env->GetObjectClass(obj),
"generateCertificateChain",
"(Ljava/lang/String;Ljava/util/Collection;Ljava/util/Collection;)V");
// Determine method ID to generate RSA certificate chain
jmethodID mGenRSAKeyAndCertChain = env->GetMethodID(env->GetObjectClass(obj),
"generateRSAKeyAndCertificateChain",
"(Ljava/lang/String;JJILjava/util/Collection;Ljava/util/Collection;)V");
// Use CertEnumCertificatesInStore to get the certificates
// from the open store. pCertContext must be reset to
// NULL to retrieve the first certificate in the store.
while (pCertContext = ::CertEnumCertificatesInStore(hCertStore, pCertContext))
{
// Check if private key available - client authentication certificate
// must have private key available.
HCRYPTPROV hCryptProv = NULL;
DWORD dwKeySpec = 0;
HCRYPTKEY hUserKey = NULL;
BOOL bCallerFreeProv = FALSE;
BOOL bHasNoPrivateKey = FALSE;
DWORD dwPublicKeyLength = 0;
if (::CryptAcquireCertificatePrivateKey(pCertContext, NULL, NULL,
&hCryptProv, &dwKeySpec, &bCallerFreeProv) == FALSE)
{
bHasNoPrivateKey = TRUE;
} else {
// Private key is available
BOOL bGetUserKey = ::CryptGetUserKey(hCryptProv, dwKeySpec, &hUserKey);
// Skip certificate if cannot find private key
if (bGetUserKey == FALSE)
{
if (bCallerFreeProv)
::CryptReleaseContext(hCryptProv, NULL);
continue;
}
// Set cipher mode to ECB
DWORD dwCipherMode = CRYPT_MODE_ECB;
::CryptSetKeyParam(hUserKey, KP_MODE, (BYTE*)&dwCipherMode, NULL);
// If the private key is present in smart card, we may not be able to
// determine the key length by using the private key handle. However,
// since public/private key pairs must have the same length, we could
// determine the key length of the private key by using the public key
// in the certificate.
dwPublicKeyLength = ::CertGetPublicKeyLength(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
&(pCertContext->pCertInfo->SubjectPublicKeyInfo));
}
PCCERT_CHAIN_CONTEXT pCertChainContext = NULL;
// Build certificate chain by using system certificate store.
// Add cert chain into collection for any key usage.
//
if (GetCertificateChain(OID_EKU_ANY, pCertContext,
&pCertChainContext))
{
for (unsigned int i=0; i < pCertChainContext->cChain; i++)
{
// Found cert chain
PCERT_SIMPLE_CHAIN rgpChain =
pCertChainContext->rgpChain[i];
// Create ArrayList to store certs in each chain
jobject jArrayList =
env->NewObject(clazzArrayList, mNewArrayList);
for (unsigned int j=0; j < rgpChain->cElement; j++)
{
PCERT_CHAIN_ELEMENT rgpElement =
rgpChain->rgpElement[j];
PCCERT_CONTEXT pc = rgpElement->pCertContext;
// Retrieve the friendly name of the first certificate
// in the chain
if (j == 0) {
// If the cert's name cannot be retrieved then
// pszNameString remains set to NULL.
// (An alias name will be generated automatically
// when storing this cert in the keystore.)
// Get length of friendly name
if ((cchNameString = CertGetNameString(pc,
CERT_NAME_FRIENDLY_DISPLAY_TYPE, 0, NULL,
NULL, 0)) > 1) {
// Found friendly name
pszNameString = new char[cchNameString];
CertGetNameString(pc,
CERT_NAME_FRIENDLY_DISPLAY_TYPE, 0, NULL,
pszNameString, cchNameString);
}
}
BYTE* pbCertEncoded = pc->pbCertEncoded;
DWORD cbCertEncoded = pc->cbCertEncoded;
// Allocate and populate byte array
jbyteArray byteArray = env->NewByteArray(cbCertEncoded);
env->SetByteArrayRegion(byteArray, 0, cbCertEncoded,
(jbyte*) pbCertEncoded);
// Generate certificate from byte array and store into
// cert collection
env->CallVoidMethod(obj, mGenCert, byteArray, jArrayList);
}
if (bHasNoPrivateKey)
{
// Generate certificate chain and store into cert chain
// collection
env->CallVoidMethod(obj, mGenCertChain,
env->NewStringUTF(pszNameString),
jArrayList, jCollections);
}
else
{
// Determine key type: RSA or DSA
DWORD dwData = CALG_RSA_KEYX;
DWORD dwSize = sizeof(DWORD);
::CryptGetKeyParam(hUserKey, KP_ALGID, (BYTE*)&dwData,
&dwSize, NULL);
if ((dwData & ALG_TYPE_RSA) == ALG_TYPE_RSA)
{
// Generate RSA certificate chain and store into cert
// chain collection
env->CallVoidMethod(obj, mGenRSAKeyAndCertChain,
env->NewStringUTF(pszNameString),
(jlong) hCryptProv, (jlong) hUserKey,
dwPublicKeyLength, jArrayList, jCollections);
}
}
}
// Free cert chain
if (pCertChainContext)
::CertFreeCertificateChain(pCertChainContext);
}
}
}
__finally
{
if (hCertStore)
::CertCloseStore(hCertStore, 0);
if (pszCertStoreName)
env->ReleaseStringUTFChars(jCertStoreName, pszCertStoreName);
if (pszNameString)
delete [] pszNameString;
}
}
/*
* Class: sun_security_mscapi_Key
* Method: cleanUp
* Signature: (JJ)V
*/
JNIEXPORT void JNICALL Java_sun_security_mscapi_Key_cleanUp
(JNIEnv *env, jclass clazz, jlong hCryptProv, jlong hCryptKey)
{
if (hCryptKey != NULL)
::CryptDestroyKey((HCRYPTKEY) hCryptKey);
if (hCryptProv != NULL)
::CryptReleaseContext((HCRYPTPROV) hCryptProv, NULL);
}
/*
* Class: sun_security_mscapi_RSASignature
* Method: signHash
* Signature: (Z[BILjava/lang/String;JJ)[B
*/
JNIEXPORT jbyteArray JNICALL Java_sun_security_mscapi_RSASignature_signHash
(JNIEnv *env, jclass clazz, jboolean noHashOID, jbyteArray jHash,
jint jHashSize, jstring jHashAlgorithm, jlong hCryptProv,
jlong hCryptKey)
{
HCRYPTHASH hHash = NULL;
jbyte* pHashBuffer = NULL;
jbyte* pSignedHashBuffer = NULL;
jbyteArray jSignedHash = NULL;
HCRYPTPROV hCryptProvAlt = NULL;
__try
{
// Map hash algorithm
ALG_ID algId = MapHashAlgorithm(env, jHashAlgorithm);
// Acquire a hash object handle.
if (::CryptCreateHash(HCRYPTPROV(hCryptProv), algId, 0, 0, &hHash) == FALSE)
{
// Failover to using the PROV_RSA_AES CSP
DWORD cbData = 256;
BYTE pbData[256];
pbData[0] = '\0';
// Get name of the key container
::CryptGetProvParam((HCRYPTPROV)hCryptProv, PP_CONTAINER,
(BYTE *)pbData, &cbData, 0);
// Acquire an alternative CSP handle
if (::CryptAcquireContext(&hCryptProvAlt, LPCSTR(pbData), NULL,
PROV_RSA_AES, 0) == FALSE)
{
ThrowException(env, SIGNATURE_EXCEPTION, GetLastError());
__leave;
}
// Acquire a hash object handle.
if (::CryptCreateHash(HCRYPTPROV(hCryptProvAlt), algId, 0, 0,
&hHash) == FALSE)
{
ThrowException(env, SIGNATURE_EXCEPTION, GetLastError());
__leave;
}
}
// Copy hash from Java to native buffer
pHashBuffer = new jbyte[jHashSize];
env->GetByteArrayRegion(jHash, 0, jHashSize, pHashBuffer);
// Set hash value in the hash object
if (::CryptSetHashParam(hHash, HP_HASHVAL, (BYTE*)pHashBuffer, NULL) == FALSE)
{
ThrowException(env, SIGNATURE_EXCEPTION, GetLastError());
__leave;
}
// Determine key spec.
DWORD dwKeySpec = AT_SIGNATURE;
ALG_ID dwAlgId;
DWORD dwAlgIdLen = sizeof(ALG_ID);
if (! ::CryptGetKeyParam((HCRYPTKEY) hCryptKey, KP_ALGID, (BYTE*)&dwAlgId, &dwAlgIdLen, 0)) {
ThrowException(env, SIGNATURE_EXCEPTION, GetLastError());
__leave;
}
if (CALG_RSA_KEYX == dwAlgId) {
dwKeySpec = AT_KEYEXCHANGE;
}
// Determine size of buffer
DWORD dwBufLen = 0;
DWORD dwFlags = 0;
if (noHashOID == JNI_TRUE) {
dwFlags = CRYPT_NOHASHOID; // omit hash OID in NONEwithRSA signature
}
if (::CryptSignHash(hHash, dwKeySpec, NULL, dwFlags, NULL, &dwBufLen) == FALSE)
{
ThrowException(env, SIGNATURE_EXCEPTION, GetLastError());
__leave;
}
pSignedHashBuffer = new jbyte[dwBufLen];
if (::CryptSignHash(hHash, dwKeySpec, NULL, dwFlags, (BYTE*)pSignedHashBuffer, &dwBufLen) == FALSE)
{
ThrowException(env, SIGNATURE_EXCEPTION, GetLastError());
__leave;
}
// Create new byte array
jbyteArray temp = env->NewByteArray(dwBufLen);
// Copy data from native buffer
env->SetByteArrayRegion(temp, 0, dwBufLen, pSignedHashBuffer);
jSignedHash = temp;
}
__finally
{
if (hCryptProvAlt)
::CryptReleaseContext(hCryptProvAlt, 0);
if (pSignedHashBuffer)
delete [] pSignedHashBuffer;
if (pHashBuffer)
delete [] pHashBuffer;
if (hHash)
::CryptDestroyHash(hHash);
}
return jSignedHash;
}
/*
* Class: sun_security_mscapi_RSASignature
* Method: verifySignedHash
* Signature: ([BIL/java/lang/String;[BIJJ)Z
*/
JNIEXPORT jboolean JNICALL Java_sun_security_mscapi_RSASignature_verifySignedHash
(JNIEnv *env, jclass clazz, jbyteArray jHash, jint jHashSize,
jstring jHashAlgorithm, jbyteArray jSignedHash, jint jSignedHashSize,
jlong hCryptProv, jlong hCryptKey)
{
HCRYPTHASH hHash = NULL;
jbyte* pHashBuffer = NULL;
jbyte* pSignedHashBuffer = NULL;
DWORD dwSignedHashBufferLen = jSignedHashSize;
jboolean result = JNI_FALSE;
HCRYPTPROV hCryptProvAlt = NULL;
__try
{
// Map hash algorithm
ALG_ID algId = MapHashAlgorithm(env, jHashAlgorithm);
// Acquire a hash object handle.
if (::CryptCreateHash(HCRYPTPROV(hCryptProv), algId, 0, 0, &hHash)
== FALSE)
{
// Failover to using the PROV_RSA_AES CSP
DWORD cbData = 256;
BYTE pbData[256];
pbData[0] = '\0';
// Get name of the key container
::CryptGetProvParam((HCRYPTPROV)hCryptProv, PP_CONTAINER,
(BYTE *)pbData, &cbData, 0);
// Acquire an alternative CSP handle
if (::CryptAcquireContext(&hCryptProvAlt, LPCSTR(pbData), NULL,
PROV_RSA_AES, 0) == FALSE)
{
ThrowException(env, SIGNATURE_EXCEPTION, GetLastError());
__leave;
}
// Acquire a hash object handle.
if (::CryptCreateHash(HCRYPTPROV(hCryptProvAlt), algId, 0, 0,
&hHash) == FALSE)
{
ThrowException(env, SIGNATURE_EXCEPTION, GetLastError());
__leave;
}
}
// Copy hash and signedHash from Java to native buffer
pHashBuffer = new jbyte[jHashSize];
env->GetByteArrayRegion(jHash, 0, jHashSize, pHashBuffer);
pSignedHashBuffer = new jbyte[jSignedHashSize];
env->GetByteArrayRegion(jSignedHash, 0, jSignedHashSize,
pSignedHashBuffer);
// Set hash value in the hash object
if (::CryptSetHashParam(hHash, HP_HASHVAL, (BYTE*) pHashBuffer, NULL)
== FALSE)
{
ThrowException(env, SIGNATURE_EXCEPTION, GetLastError());
__leave;
}
// For RSA, the hash encryption algorithm is normally the same as the
// public key algorithm, so AT_SIGNATURE is used.
// Verify the signature
if (::CryptVerifySignatureA(hHash, (BYTE *) pSignedHashBuffer,
dwSignedHashBufferLen, (HCRYPTKEY) hCryptKey, NULL, 0) == TRUE)
{
result = JNI_TRUE;
}
}
__finally
{
if (hCryptProvAlt)
::CryptReleaseContext(hCryptProvAlt, 0);
if (pSignedHashBuffer)
delete [] pSignedHashBuffer;
if (pHashBuffer)
delete [] pHashBuffer;
if (hHash)
::CryptDestroyHash(hHash);
}
return result;
}
/*
* Class: sun_security_mscapi_RSAKeyPairGenerator
* Method: generateRSAKeyPair
* Signature: (ILjava/lang/String;)Lsun/security/mscapi/RSAKeyPair;
*/
JNIEXPORT jobject JNICALL Java_sun_security_mscapi_RSAKeyPairGenerator_generateRSAKeyPair
(JNIEnv *env, jclass clazz, jint keySize, jstring keyContainerName)
{
HCRYPTPROV hCryptProv = NULL;
HCRYPTKEY hKeyPair;
DWORD dwFlags = (keySize << 16) | CRYPT_EXPORTABLE;
jobject keypair = NULL;
const char* pszKeyContainerName = NULL; // UUID
__try
{
pszKeyContainerName = env->GetStringUTFChars(keyContainerName, NULL);
// Acquire a CSP context (create a new key container).
// Prefer a PROV_RSA_AES CSP, when available, due to its support
// for SHA-2-based signatures.
if (::CryptAcquireContext(
&hCryptProv,
pszKeyContainerName,
NULL,
PROV_RSA_AES,
CRYPT_NEWKEYSET) == FALSE)
{
// Failover to using the default CSP (PROV_RSA_FULL)
if (::CryptAcquireContext(
&hCryptProv,
pszKeyContainerName,
NULL,
PROV_RSA_FULL,
CRYPT_NEWKEYSET) == FALSE)
{
ThrowException(env, KEY_EXCEPTION, GetLastError());
__leave;
}
}
// Generate an RSA keypair
if(::CryptGenKey(
hCryptProv,
AT_KEYEXCHANGE,
dwFlags,
&hKeyPair) == FALSE)
{
ThrowException(env, KEY_EXCEPTION, GetLastError());
__leave;
}
// Get the method ID for the RSAKeyPair constructor
jclass clazzRSAKeyPair =
env->FindClass("sun/security/mscapi/RSAKeyPair");
jmethodID mNewRSAKeyPair =
env->GetMethodID(clazzRSAKeyPair, "<init>", "(JJI)V");
// Create a new RSA keypair
keypair = env->NewObject(clazzRSAKeyPair, mNewRSAKeyPair,
(jlong) hCryptProv, (jlong) hKeyPair, keySize);
}
__finally
{
//--------------------------------------------------------------------
// Clean up.
if (pszKeyContainerName)
env->ReleaseStringUTFChars(keyContainerName, pszKeyContainerName);
}
return keypair;
}
/*
* Class: sun_security_mscapi_Key
* Method: getContainerName
* Signature: (J)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_sun_security_mscapi_Key_getContainerName
(JNIEnv *env, jclass jclazz, jlong hCryptProv)
{
DWORD cbData = 256;
BYTE pbData[256];
pbData[0] = '\0';
::CryptGetProvParam(
(HCRYPTPROV)hCryptProv,
PP_CONTAINER,
(BYTE *)pbData,
&cbData,
0);
return env->NewStringUTF((const char*)pbData);
}
/*
* Class: sun_security_mscapi_Key
* Method: getKeyType
* Signature: (J)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_sun_security_mscapi_Key_getKeyType
(JNIEnv *env, jclass jclazz, jlong hCryptKey)
{
ALG_ID dwAlgId;
DWORD dwAlgIdLen = sizeof(ALG_ID);
if (::CryptGetKeyParam((HCRYPTKEY) hCryptKey, KP_ALGID, (BYTE*)&dwAlgId, &dwAlgIdLen, 0)) {
if (CALG_RSA_SIGN == dwAlgId) {
return env->NewStringUTF("Signature");
} else if (CALG_RSA_KEYX == dwAlgId) {
return env->NewStringUTF("Exchange");
} else {
char buffer[64];
if (sprintf(buffer, "%lu", dwAlgId)) {
return env->NewStringUTF(buffer);
}
}
}
return env->NewStringUTF("<Unknown>");
}
/*
* Class: sun_security_mscapi_KeyStore
* Method: storeCertificate
* Signature: (Ljava/lang/String;Ljava/lang/String;[BIJJ)V
*/
JNIEXPORT void JNICALL Java_sun_security_mscapi_KeyStore_storeCertificate
(JNIEnv *env, jobject obj, jstring jCertStoreName, jstring jCertAliasName,
jbyteArray jCertEncoding, jint jCertEncodingSize, jlong hCryptProv,
jlong hCryptKey)
{
const char* pszCertStoreName = NULL;
HCERTSTORE hCertStore = NULL;
PCCERT_CONTEXT pCertContext = NULL;
PWCHAR pszCertAliasName = NULL;
jbyte* pbCertEncoding = NULL;
const jchar* jCertAliasChars = NULL;
const char* pszContainerName = NULL;
const char* pszProviderName = NULL;
WCHAR * pwszContainerName = NULL;
WCHAR * pwszProviderName = NULL;
__try
{
// Open a system certificate store.
pszCertStoreName = env->GetStringUTFChars(jCertStoreName, NULL);
if ((hCertStore = ::CertOpenSystemStore(NULL, pszCertStoreName)) == NULL) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Copy encoding from Java to native buffer
pbCertEncoding = new jbyte[jCertEncodingSize];
env->GetByteArrayRegion(jCertEncoding, 0, jCertEncodingSize, pbCertEncoding);
// Create a certificate context from the encoded cert
if (!(pCertContext = ::CertCreateCertificateContext(X509_ASN_ENCODING,
(BYTE*) pbCertEncoding, jCertEncodingSize))) {
ThrowException(env, CERTIFICATE_PARSING_EXCEPTION, GetLastError());
__leave;
}
// Set the certificate's friendly name
int size = env->GetStringLength(jCertAliasName);
pszCertAliasName = new WCHAR[size + 1];
jCertAliasChars = env->GetStringChars(jCertAliasName, NULL);
memcpy(pszCertAliasName, jCertAliasChars, size * sizeof(WCHAR));
pszCertAliasName[size] = 0; // append the string terminator
CRYPT_DATA_BLOB friendlyName = {
sizeof(WCHAR) * (size + 1),
(BYTE *) pszCertAliasName
};
env->ReleaseStringChars(jCertAliasName, jCertAliasChars);
if (! ::CertSetCertificateContextProperty(pCertContext,
CERT_FRIENDLY_NAME_PROP_ID, 0, &friendlyName)) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Attach the certificate's private key (if supplied)
if (hCryptProv != 0 && hCryptKey != 0) {
CRYPT_KEY_PROV_INFO keyProviderInfo;
DWORD dwDataLen;
// Get the name of the key container
if (! ::CryptGetProvParam(
(HCRYPTPROV) hCryptProv,
PP_CONTAINER,
NULL,
&dwDataLen,
0)) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
pszContainerName = new char[dwDataLen];
if (! ::CryptGetProvParam(
(HCRYPTPROV) hCryptProv,
PP_CONTAINER,
(BYTE *) pszContainerName,
&dwDataLen,
0)) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Convert to a wide char string
pwszContainerName = new WCHAR[dwDataLen];
if (mbstowcs(pwszContainerName, pszContainerName, dwDataLen) == 0) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Set the name of the key container
keyProviderInfo.pwszContainerName = pwszContainerName;
// Get the name of the provider
if (! ::CryptGetProvParam(
(HCRYPTPROV) hCryptProv,
PP_NAME,
NULL,
&dwDataLen,
0)) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
pszProviderName = new char[dwDataLen];
if (! ::CryptGetProvParam(
(HCRYPTPROV) hCryptProv,
PP_NAME,
(BYTE *) pszProviderName,
&dwDataLen,
0)) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Convert to a wide char string
pwszProviderName = new WCHAR[dwDataLen];
if (mbstowcs(pwszProviderName, pszProviderName, dwDataLen) == 0) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Set the name of the provider
keyProviderInfo.pwszProvName = pwszProviderName;
// Get and set the type of the provider
if (! ::CryptGetProvParam(
(HCRYPTPROV) hCryptProv,
PP_PROVTYPE,
(LPBYTE) &keyProviderInfo.dwProvType,
&dwDataLen,
0)) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Set no provider flags
keyProviderInfo.dwFlags = 0;
// Set no provider parameters
keyProviderInfo.cProvParam = 0;
keyProviderInfo.rgProvParam = NULL;
// Get the key's algorithm ID
if (! ::CryptGetKeyParam(
(HCRYPTKEY) hCryptKey,
KP_ALGID,
(LPBYTE) &keyProviderInfo.dwKeySpec,
&dwDataLen,
0)) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Set the key spec (using the algorithm ID).
switch (keyProviderInfo.dwKeySpec) {
case CALG_RSA_KEYX:
case CALG_DH_SF:
keyProviderInfo.dwKeySpec = AT_KEYEXCHANGE;
break;
case CALG_RSA_SIGN:
case CALG_DSS_SIGN:
keyProviderInfo.dwKeySpec = AT_SIGNATURE;
break;
default:
ThrowException(env, KEYSTORE_EXCEPTION, NTE_BAD_ALGID);
__leave;
}
if (! ::CertSetCertificateContextProperty(pCertContext,
CERT_KEY_PROV_INFO_PROP_ID, 0, &keyProviderInfo)) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
}
// Import encoded certificate
if (!::CertAddCertificateContextToStore(hCertStore, pCertContext,
CERT_STORE_ADD_REPLACE_EXISTING, NULL))
{
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
}
__finally
{
//--------------------------------------------------------------------
// Clean up.
if (hCertStore)
::CertCloseStore(hCertStore, 0);
if (pszCertStoreName)
env->ReleaseStringUTFChars(jCertStoreName, pszCertStoreName);
if (pbCertEncoding)
delete [] pbCertEncoding;
if (pszCertAliasName)
delete [] pszCertAliasName;
if (pszContainerName)
delete [] pszContainerName;
if (pwszContainerName)
delete [] pwszContainerName;
if (pszProviderName)
delete [] pszProviderName;
if (pwszProviderName)
delete [] pwszProviderName;
if (pCertContext)
::CertFreeCertificateContext(pCertContext);
}
}
/*
* Class: sun_security_mscapi_KeyStore
* Method: removeCertificate
* Signature: (Ljava/lang/String;Ljava/lang/String;[BI)V
*/
JNIEXPORT void JNICALL Java_sun_security_mscapi_KeyStore_removeCertificate
(JNIEnv *env, jobject obj, jstring jCertStoreName, jstring jCertAliasName,
jbyteArray jCertEncoding, jint jCertEncodingSize) {
const char* pszCertStoreName = NULL;
const char* pszCertAliasName = NULL;
HCERTSTORE hCertStore = NULL;
PCCERT_CONTEXT pCertContext = NULL;
PCCERT_CONTEXT pTBDCertContext = NULL;
jbyte* pbCertEncoding = NULL;
DWORD cchNameString = 0;
char* pszNameString = NULL; // certificate's friendly name
BOOL bDeleteAttempted = FALSE;
__try
{
// Open a system certificate store.
pszCertStoreName = env->GetStringUTFChars(jCertStoreName, NULL);
if ((hCertStore = ::CertOpenSystemStore(NULL, pszCertStoreName)) == NULL) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Copy encoding from Java to native buffer
pbCertEncoding = new jbyte[jCertEncodingSize];
env->GetByteArrayRegion(jCertEncoding, 0, jCertEncodingSize, pbCertEncoding);
// Create a certificate context from the encoded cert
if (!(pCertContext = ::CertCreateCertificateContext(X509_ASN_ENCODING,
(BYTE*) pbCertEncoding, jCertEncodingSize))) {
ThrowException(env, CERTIFICATE_PARSING_EXCEPTION, GetLastError());
__leave;
}
// Find the certificate to be deleted
if (!(pTBDCertContext = ::CertFindCertificateInStore(hCertStore,
X509_ASN_ENCODING, 0, CERT_FIND_EXISTING, pCertContext, NULL))) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Check that its friendly name matches the supplied alias
if ((cchNameString = ::CertGetNameString(pTBDCertContext,
CERT_NAME_FRIENDLY_DISPLAY_TYPE, 0, NULL, NULL, 0)) > 1) {
pszNameString = new char[cchNameString];
::CertGetNameString(pTBDCertContext,
CERT_NAME_FRIENDLY_DISPLAY_TYPE, 0, NULL, pszNameString,
cchNameString);
// Compare the certificate's friendly name with supplied alias name
pszCertAliasName = env->GetStringUTFChars(jCertAliasName, NULL);
if (strcmp(pszCertAliasName, pszNameString) == 0) {
// Only delete the certificate if the alias names matches
if (! ::CertDeleteCertificateFromStore(pTBDCertContext)) {
// pTBDCertContext is always freed by the
// CertDeleteCertificateFromStore method
bDeleteAttempted = TRUE;
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
}
}
}
__finally
{
//--------------------------------------------------------------------
// Clean up.
if (hCertStore)
::CertCloseStore(hCertStore, 0);
if (pszCertStoreName)
env->ReleaseStringUTFChars(jCertStoreName, pszCertStoreName);
if (pszCertAliasName)
env->ReleaseStringUTFChars(jCertAliasName, pszCertAliasName);
if (pbCertEncoding)
delete [] pbCertEncoding;
if (pszNameString)
delete [] pszNameString;
if (pCertContext)
::CertFreeCertificateContext(pCertContext);
if (bDeleteAttempted && pTBDCertContext)
::CertFreeCertificateContext(pTBDCertContext);
}
}
/*
* Class: sun_security_mscapi_KeyStore
* Method: destroyKeyContainer
* Signature: (Ljava/lang/String;)V
*/
JNIEXPORT void JNICALL Java_sun_security_mscapi_KeyStore_destroyKeyContainer
(JNIEnv *env, jclass clazz, jstring keyContainerName)
{
HCRYPTPROV hCryptProv = NULL;
const char* pszKeyContainerName = NULL;
__try
{
pszKeyContainerName = env->GetStringUTFChars(keyContainerName, NULL);
// Destroying the default key container is not permitted
// (because it may contain more one keypair).
if (pszKeyContainerName == NULL) {
ThrowException(env, KEYSTORE_EXCEPTION, NTE_BAD_KEYSET_PARAM);
__leave;
}
// Acquire a CSP context (to the key container).
if (::CryptAcquireContext(
&hCryptProv,
pszKeyContainerName,
NULL,
PROV_RSA_FULL,
CRYPT_DELETEKEYSET) == FALSE)
{
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
}
__finally
{
//--------------------------------------------------------------------
// Clean up.
if (pszKeyContainerName)
env->ReleaseStringUTFChars(keyContainerName, pszKeyContainerName);
}
}
/*
* Class: sun_security_mscapi_RSACipher
* Method: findCertificateUsingAlias
* Signature: (Ljava/lang/String;Ljava/lang/String;)J
*/
JNIEXPORT jlong JNICALL Java_sun_security_mscapi_RSACipher_findCertificateUsingAlias
(JNIEnv *env, jobject obj, jstring jCertStoreName, jstring jCertAliasName)
{
const char* pszCertStoreName = NULL;
const char* pszCertAliasName = NULL;
HCERTSTORE hCertStore = NULL;
PCCERT_CONTEXT pCertContext = NULL;
char* pszNameString = NULL; // certificate's friendly name
DWORD cchNameString = 0;
__try
{
pszCertStoreName = env->GetStringUTFChars(jCertStoreName, NULL);
pszCertAliasName = env->GetStringUTFChars(jCertAliasName, NULL);
// Open a system certificate store.
if ((hCertStore = ::CertOpenSystemStore(NULL, pszCertStoreName)) == NULL) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Use CertEnumCertificatesInStore to get the certificates
// from the open store. pCertContext must be reset to
// NULL to retrieve the first certificate in the store.
while (pCertContext = ::CertEnumCertificatesInStore(hCertStore, pCertContext))
{
if ((cchNameString = ::CertGetNameString(pCertContext,
CERT_NAME_FRIENDLY_DISPLAY_TYPE, 0, NULL, NULL, 0)) == 1) {
continue; // not found
}
pszNameString = new char[cchNameString];
if (::CertGetNameString(pCertContext,
CERT_NAME_FRIENDLY_DISPLAY_TYPE, 0, NULL, pszNameString,
cchNameString) == 1) {
continue; // not found
}
// Compare the certificate's friendly name with supplied alias name
if (strcmp(pszCertAliasName, pszNameString) == 0) {
delete [] pszNameString;
break;
} else {
delete [] pszNameString;
}
}
}
__finally
{
if (hCertStore)
::CertCloseStore(hCertStore, 0);
if (pszCertStoreName)
env->ReleaseStringUTFChars(jCertStoreName, pszCertStoreName);
if (pszCertAliasName)
env->ReleaseStringUTFChars(jCertAliasName, pszCertAliasName);
}
return (jlong) pCertContext;
}
/*
* Class: sun_security_mscapi_RSACipher
* Method: getKeyFromCert
* Signature: (JZ)J
*/
JNIEXPORT jlong JNICALL Java_sun_security_mscapi_RSACipher_getKeyFromCert
(JNIEnv *env, jobject obj, jlong pCertContext, jboolean usePrivateKey)
{
HCRYPTPROV hCryptProv = NULL;
HCRYPTKEY hKey = NULL;
DWORD dwKeySpec;
__try
{
if (usePrivateKey == JNI_TRUE) {
// Locate the key container for the certificate's private key
if (!(::CryptAcquireCertificatePrivateKey(
(PCCERT_CONTEXT) pCertContext, 0, NULL, &hCryptProv,
&dwKeySpec, NULL))) {
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Get a handle to the private key
if (!(::CryptGetUserKey(hCryptProv, dwKeySpec, &hKey))) {
ThrowException(env, KEY_EXCEPTION, GetLastError());
__leave;
}
} else { // use public key
// Acquire a CSP context.
if(::CryptAcquireContext(
&hCryptProv,
"J2SE",
NULL,
PROV_RSA_FULL,
0) == FALSE)
{
// If CSP context hasn't been created, create one.
//
if (::CryptAcquireContext(
&hCryptProv,
"J2SE",
NULL,
PROV_RSA_FULL,
CRYPT_NEWKEYSET) == FALSE)
{
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
}
// Import the certificate's public key into the key container
if (!(::CryptImportPublicKeyInfo(hCryptProv, X509_ASN_ENCODING,
&(((PCCERT_CONTEXT) pCertContext)->pCertInfo->SubjectPublicKeyInfo),
&hKey))) {
ThrowException(env, KEY_EXCEPTION, GetLastError());
__leave;
}
}
}
__finally
{
//--------------------------------------------------------------------
// Clean up.
if (hCryptProv)
::CryptReleaseContext(hCryptProv, 0);
}
return hKey; // TODO - when finished with this key, call
// CryptDestroyKey(hKey)
}
/*
* Class: sun_security_mscapi_KeyStore
* Method: getKeyLength
* Signature: (J)I
*/
JNIEXPORT jint JNICALL Java_sun_security_mscapi_KeyStore_getKeyLength
(JNIEnv *env, jobject obj, jlong hKey)
{
DWORD dwDataLen = sizeof(DWORD);
BYTE pbData[sizeof(DWORD)];
DWORD length = 0;
__try
{
// Get key length (in bits)
//TODO - may need to use KP_BLOCKLEN instead?
if (!(::CryptGetKeyParam((HCRYPTKEY) hKey, KP_KEYLEN, (BYTE *)pbData, &dwDataLen,
0))) {
ThrowException(env, KEY_EXCEPTION, GetLastError());
__leave;
}
length = (DWORD) pbData;
}
__finally
{
// no cleanup required
}
return (jint) length;
}
/*
* Class: sun_security_mscapi_RSACipher
* Method: encryptDecrypt
* Signature: ([BIJZ)[B
*/
JNIEXPORT jbyteArray JNICALL Java_sun_security_mscapi_RSACipher_encryptDecrypt
(JNIEnv *env, jclass clazz, jbyteArray jData, jint jDataSize, jlong hKey,
jboolean doEncrypt)
{
jbyteArray result = NULL;
jbyte* pData = NULL;
DWORD dwDataLen = jDataSize;
DWORD dwBufLen = env->GetArrayLength(jData);
DWORD i;
BYTE tmp;
__try
{
// Copy data from Java buffer to native buffer
pData = new jbyte[dwBufLen];
env->GetByteArrayRegion(jData, 0, dwBufLen, pData);
if (doEncrypt == JNI_TRUE) {
// encrypt
if (! ::CryptEncrypt((HCRYPTKEY) hKey, 0, TRUE, 0, (BYTE *)pData,
&dwDataLen, dwBufLen)) {
ThrowException(env, KEY_EXCEPTION, GetLastError());
__leave;
}
dwBufLen = dwDataLen;
// convert from little-endian
for (i = 0; i < dwBufLen / 2; i++) {
tmp = pData[i];
pData[i] = pData[dwBufLen - i -1];
pData[dwBufLen - i - 1] = tmp;
}
} else {
// convert to little-endian
for (i = 0; i < dwBufLen / 2; i++) {
tmp = pData[i];
pData[i] = pData[dwBufLen - i -1];
pData[dwBufLen - i - 1] = tmp;
}
// decrypt
if (! ::CryptDecrypt((HCRYPTKEY) hKey, 0, TRUE, 0, (BYTE *)pData,
&dwBufLen)) {
ThrowException(env, KEY_EXCEPTION, GetLastError());
__leave;
}
}
// Create new byte array
result = env->NewByteArray(dwBufLen);
// Copy data from native buffer to Java buffer
env->SetByteArrayRegion(result, 0, dwBufLen, (jbyte*) pData);
}
__finally
{
if (pData)
delete [] pData;
}
return result;
}
/*
* Class: sun_security_mscapi_RSAPublicKey
* Method: getPublicKeyBlob
* Signature: (J)[B
*/
JNIEXPORT jbyteArray JNICALL Java_sun_security_mscapi_RSAPublicKey_getPublicKeyBlob
(JNIEnv *env, jclass clazz, jlong hCryptKey) {
jbyteArray blob = NULL;
DWORD dwBlobLen;
BYTE* pbKeyBlob = NULL;
__try
{
// Determine the size of the blob
if (! ::CryptExportKey((HCRYPTKEY) hCryptKey, 0, PUBLICKEYBLOB, 0, NULL,
&dwBlobLen)) {
ThrowException(env, KEY_EXCEPTION, GetLastError());
__leave;
}
pbKeyBlob = new BYTE[dwBlobLen];
// Generate key blob
if (! ::CryptExportKey((HCRYPTKEY) hCryptKey, 0, PUBLICKEYBLOB, 0,
pbKeyBlob, &dwBlobLen)) {
ThrowException(env, KEY_EXCEPTION, GetLastError());
__leave;
}
// Create new byte array
blob = env->NewByteArray(dwBlobLen);
// Copy data from native buffer to Java buffer
env->SetByteArrayRegion(blob, 0, dwBlobLen, (jbyte*) pbKeyBlob);
}
__finally
{
if (pbKeyBlob)
delete [] pbKeyBlob;
}
return blob;
}
/*
* Class: sun_security_mscapi_RSAPublicKey
* Method: getExponent
* Signature: ([B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_sun_security_mscapi_RSAPublicKey_getExponent
(JNIEnv *env, jclass clazz, jbyteArray jKeyBlob) {
jbyteArray exponent = NULL;
jbyte* exponentBytes = NULL;
jbyte* keyBlob = NULL;
__try {
jsize length = env->GetArrayLength(jKeyBlob);
keyBlob = env->GetByteArrayElements(jKeyBlob, 0);
PUBLICKEYSTRUC* pPublicKeyStruc = (PUBLICKEYSTRUC *) keyBlob;
// Check BLOB type
if (pPublicKeyStruc->bType != PUBLICKEYBLOB) {
ThrowException(env, KEY_EXCEPTION, NTE_BAD_TYPE);
__leave;
}
RSAPUBKEY* pRsaPubKey =
(RSAPUBKEY *) (keyBlob + sizeof(PUBLICKEYSTRUC));
int len = sizeof(pRsaPubKey->pubexp);
exponentBytes = new jbyte[len];
// convert from little-endian while copying from blob
for (int i = 0, j = len - 1; i < len; i++, j--) {
exponentBytes[i] = ((BYTE*) &pRsaPubKey->pubexp)[j];
}
exponent = env->NewByteArray(len);
env->SetByteArrayRegion(exponent, 0, len, exponentBytes);
}
__finally
{
if (keyBlob)
env->ReleaseByteArrayElements(jKeyBlob, keyBlob, JNI_ABORT);
if (exponentBytes)
delete [] exponentBytes;
}
return exponent;
}
/*
* Class: sun_security_mscapi_RSAPublicKey
* Method: getModulus
* Signature: ([B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_sun_security_mscapi_RSAPublicKey_getModulus
(JNIEnv *env, jclass clazz, jbyteArray jKeyBlob) {
jbyteArray modulus = NULL;
jbyte* modulusBytes = NULL;
jbyte* keyBlob = NULL;
__try {
jsize length = env->GetArrayLength(jKeyBlob);
keyBlob = env->GetByteArrayElements(jKeyBlob, 0);
PUBLICKEYSTRUC* pPublicKeyStruc = (PUBLICKEYSTRUC *) keyBlob;
// Check BLOB type
if (pPublicKeyStruc->bType != PUBLICKEYBLOB) {
ThrowException(env, KEY_EXCEPTION, NTE_BAD_TYPE);
__leave;
}
RSAPUBKEY* pRsaPubKey =
(RSAPUBKEY *) (keyBlob + sizeof(PUBLICKEYSTRUC));
int len = pRsaPubKey->bitlen / 8;
modulusBytes = new jbyte[len];
BYTE * pbModulus =
(BYTE *) (keyBlob + sizeof(PUBLICKEYSTRUC) + sizeof(RSAPUBKEY));
// convert from little-endian while copying from blob
for (int i = 0, j = len - 1; i < len; i++, j--) {
modulusBytes[i] = pbModulus[j];
}
modulus = env->NewByteArray(len);
env->SetByteArrayRegion(modulus, 0, len, modulusBytes);
}
__finally
{
if (keyBlob)
env->ReleaseByteArrayElements(jKeyBlob, keyBlob, JNI_ABORT);
if (modulusBytes)
delete [] modulusBytes;
}
return modulus;
}
/*
* Convert an array in big-endian byte order into little-endian byte order.
*/
int convertToLittleEndian(JNIEnv *env, jbyteArray source, jbyte* destination,
int destinationLength) {
int count = 0;
int sourceLength = env->GetArrayLength(source);
if (sourceLength < destinationLength) {
return -1;
}
jbyte* sourceBytes = env->GetByteArrayElements(source, 0);
// Copy bytes from the end of the source array to the beginning of the
// destination array (until the destination array is full).
// This ensures that the sign byte from the source array will be excluded.
for (int i = 0; i < destinationLength; i++) {
destination[i] = sourceBytes[sourceLength - i - 1];
count++;
}
if (sourceBytes)
env->ReleaseByteArrayElements(source, sourceBytes, JNI_ABORT);
return count;
}
/*
* The Microsoft Base Cryptographic Provider supports public-key BLOBs
* that have the following format:
*
* PUBLICKEYSTRUC publickeystruc;
* RSAPUBKEY rsapubkey;
* BYTE modulus[rsapubkey.bitlen/8];
*
* and private-key BLOBs that have the following format:
*
* PUBLICKEYSTRUC publickeystruc;
* RSAPUBKEY rsapubkey;
* BYTE modulus[rsapubkey.bitlen/8];
* BYTE prime1[rsapubkey.bitlen/16];
* BYTE prime2[rsapubkey.bitlen/16];
* BYTE exponent1[rsapubkey.bitlen/16];
* BYTE exponent2[rsapubkey.bitlen/16];
* BYTE coefficient[rsapubkey.bitlen/16];
* BYTE privateExponent[rsapubkey.bitlen/8];
*
* This method generates such BLOBs from the key elements supplied.
*/
jbyteArray generateKeyBlob(
JNIEnv *env,
jint jKeyBitLength,
jbyteArray jModulus,
jbyteArray jPublicExponent,
jbyteArray jPrivateExponent,
jbyteArray jPrimeP,
jbyteArray jPrimeQ,
jbyteArray jExponentP,
jbyteArray jExponentQ,
jbyteArray jCrtCoefficient)
{
jsize jKeyByteLength = jKeyBitLength / 8;
jsize jBlobLength;
BOOL bGeneratePrivateKeyBlob;
// Determine whether to generate a public-key or a private-key BLOB
if (jPrivateExponent != NULL &&
jPrimeP != NULL &&
jPrimeQ != NULL &&
jExponentP != NULL &&
jExponentQ != NULL &&
jCrtCoefficient != NULL) {
bGeneratePrivateKeyBlob = TRUE;
jBlobLength = sizeof(BLOBHEADER) +
sizeof(RSAPUBKEY) +
((jKeyBitLength / 8) * 4) +
(jKeyBitLength / 16);
} else {
bGeneratePrivateKeyBlob = FALSE;
jBlobLength = sizeof(BLOBHEADER) +
sizeof(RSAPUBKEY) +
(jKeyBitLength / 8);
}
jbyte* jBlobBytes = new jbyte[jBlobLength];
jbyte* jBlobElement;
jbyteArray jBlob = NULL;
jsize jElementLength;
__try {
BLOBHEADER *pBlobHeader = (BLOBHEADER *) jBlobBytes;
if (bGeneratePrivateKeyBlob) {
pBlobHeader->bType = PRIVATEKEYBLOB; // 0x07
} else {
pBlobHeader->bType = PUBLICKEYBLOB; // 0x06
}
pBlobHeader->bVersion = CUR_BLOB_VERSION; // 0x02
pBlobHeader->reserved = 0; // 0x0000
pBlobHeader->aiKeyAlg = CALG_RSA_KEYX; // 0x0000a400
RSAPUBKEY *pRsaPubKey =
(RSAPUBKEY *) (jBlobBytes + sizeof(PUBLICKEYSTRUC));
if (bGeneratePrivateKeyBlob) {
pRsaPubKey->magic = 0x32415352; // "RSA2"
} else {
pRsaPubKey->magic = 0x31415352; // "RSA1"
}
pRsaPubKey->bitlen = jKeyBitLength;
pRsaPubKey->pubexp = 0; // init
// Sanity check
jsize jPublicExponentLength = env->GetArrayLength(jPublicExponent);
if (jPublicExponentLength > sizeof(pRsaPubKey->pubexp)) {
ThrowException(env, INVALID_KEY_EXCEPTION, NTE_BAD_TYPE);
__leave;
}
// The length argument must be the smaller of jPublicExponentLength
// and sizeof(pRsaPubKey->pubkey)
convertToLittleEndian(env, jPublicExponent,
(jbyte *) &(pRsaPubKey->pubexp), jPublicExponentLength);
// Modulus n
jBlobElement =
(jbyte *) (jBlobBytes + sizeof(PUBLICKEYSTRUC) + sizeof(RSAPUBKEY));
jElementLength = convertToLittleEndian(env, jModulus, jBlobElement,
jKeyByteLength);
if (bGeneratePrivateKeyBlob) {
// Prime p
jBlobElement += jElementLength;
jElementLength = convertToLittleEndian(env, jPrimeP, jBlobElement,
jKeyByteLength / 2);
// Prime q
jBlobElement += jElementLength;
jElementLength = convertToLittleEndian(env, jPrimeQ, jBlobElement,
jKeyByteLength / 2);
// Prime exponent p
jBlobElement += jElementLength;
jElementLength = convertToLittleEndian(env, jExponentP,
jBlobElement, jKeyByteLength / 2);
// Prime exponent q
jBlobElement += jElementLength;
jElementLength = convertToLittleEndian(env, jExponentQ,
jBlobElement, jKeyByteLength / 2);
// CRT coefficient
jBlobElement += jElementLength;
jElementLength = convertToLittleEndian(env, jCrtCoefficient,
jBlobElement, jKeyByteLength / 2);
// Private exponent
jBlobElement += jElementLength;
convertToLittleEndian(env, jPrivateExponent, jBlobElement,
jKeyByteLength);
}
jBlob = env->NewByteArray(jBlobLength);
env->SetByteArrayRegion(jBlob, 0, jBlobLength, jBlobBytes);
}
__finally
{
if (jBlobBytes)
delete [] jBlobBytes;
}
return jBlob;
}
/*
* Class: sun_security_mscapi_KeyStore
* Method: generatePrivateKeyBlob
* Signature: (I[B[B[B[B[B[B[B[B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_sun_security_mscapi_KeyStore_generatePrivateKeyBlob
(JNIEnv *env, jclass clazz,
jint jKeyBitLength,
jbyteArray jModulus,
jbyteArray jPublicExponent,
jbyteArray jPrivateExponent,
jbyteArray jPrimeP,
jbyteArray jPrimeQ,
jbyteArray jExponentP,
jbyteArray jExponentQ,
jbyteArray jCrtCoefficient)
{
return generateKeyBlob(env, jKeyBitLength, jModulus, jPublicExponent,
jPrivateExponent, jPrimeP, jPrimeQ, jExponentP, jExponentQ,
jCrtCoefficient);
}
/*
* Class: sun_security_mscapi_RSASignature
* Method: generatePublicKeyBlob
* Signature: (I[B[B)[B
*/
JNIEXPORT jbyteArray JNICALL Java_sun_security_mscapi_RSASignature_generatePublicKeyBlob
(JNIEnv *env, jclass clazz,
jint jKeyBitLength,
jbyteArray jModulus,
jbyteArray jPublicExponent)
{
return generateKeyBlob(env, jKeyBitLength, jModulus, jPublicExponent,
NULL, NULL, NULL, NULL, NULL, NULL);
}
/*
* Class: sun_security_mscapi_KeyStore
* Method: storePrivateKey
* Signature: ([BLjava/lang/String;I)Lsun/security/mscapi/RSAPrivateKey;
*/
JNIEXPORT jobject JNICALL Java_sun_security_mscapi_KeyStore_storePrivateKey
(JNIEnv *env, jclass clazz, jbyteArray keyBlob, jstring keyContainerName,
jint keySize)
{
HCRYPTPROV hCryptProv = NULL;
HCRYPTKEY hKey = NULL;
DWORD dwBlobLen;
BYTE * pbKeyBlob = NULL;
const char* pszKeyContainerName = NULL; // UUID
jobject privateKey = NULL;
__try
{
pszKeyContainerName = env->GetStringUTFChars(keyContainerName, NULL);
dwBlobLen = env->GetArrayLength(keyBlob);
pbKeyBlob = (BYTE *) env->GetByteArrayElements(keyBlob, 0);
// Acquire a CSP context (create a new key container).
if (::CryptAcquireContext(
&hCryptProv,
pszKeyContainerName,
NULL,
PROV_RSA_FULL,
CRYPT_NEWKEYSET) == FALSE)
{
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Import the private key
if (::CryptImportKey(
hCryptProv,
pbKeyBlob,
dwBlobLen,
0,
CRYPT_EXPORTABLE,
&hKey) == FALSE)
{
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Get the method ID for the RSAPrivateKey constructor
jclass clazzRSAPrivateKey =
env->FindClass("sun/security/mscapi/RSAPrivateKey");
jmethodID mNewRSAPrivateKey =
env->GetMethodID(clazzRSAPrivateKey, "<init>", "(JJI)V");
// Create a new RSA private key
privateKey = env->NewObject(clazzRSAPrivateKey, mNewRSAPrivateKey,
(jlong) hCryptProv, (jlong) hKey, keySize);
}
__finally
{
//--------------------------------------------------------------------
// Clean up.
if (pszKeyContainerName)
env->ReleaseStringUTFChars(keyContainerName, pszKeyContainerName);
if (pbKeyBlob)
env->ReleaseByteArrayElements(keyBlob, (jbyte *) pbKeyBlob,
JNI_ABORT);
}
return privateKey;
}
/*
* Class: sun_security_mscapi_RSASignature
* Method: importPublicKey
* Signature: ([BI)Lsun/security/mscapi/RSAPublicKey;
*/
JNIEXPORT jobject JNICALL Java_sun_security_mscapi_RSASignature_importPublicKey
(JNIEnv *env, jclass clazz, jbyteArray keyBlob, jint keySize)
{
HCRYPTPROV hCryptProv = NULL;
HCRYPTKEY hKey = NULL;
DWORD dwBlobLen;
BYTE * pbKeyBlob = NULL;
jobject publicKey = NULL;
__try
{
dwBlobLen = env->GetArrayLength(keyBlob);
pbKeyBlob = (BYTE *) env->GetByteArrayElements(keyBlob, 0);
// Acquire a CSP context (create a new key container).
// Prefer a PROV_RSA_AES CSP, when available, due to its support
// for SHA-2-based signatures.
if (::CryptAcquireContext(
&hCryptProv,
NULL,
NULL,
PROV_RSA_AES,
CRYPT_VERIFYCONTEXT) == FALSE)
{
// Failover to using the default CSP (PROV_RSA_FULL)
if (::CryptAcquireContext(
&hCryptProv,
NULL,
NULL,
PROV_RSA_FULL,
CRYPT_VERIFYCONTEXT) == FALSE)
{
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
}
// Import the public key
if (::CryptImportKey(
hCryptProv,
pbKeyBlob,
dwBlobLen,
0,
CRYPT_EXPORTABLE,
&hKey) == FALSE)
{
ThrowException(env, KEYSTORE_EXCEPTION, GetLastError());
__leave;
}
// Get the method ID for the RSAPublicKey constructor
jclass clazzRSAPublicKey =
env->FindClass("sun/security/mscapi/RSAPublicKey");
jmethodID mNewRSAPublicKey =
env->GetMethodID(clazzRSAPublicKey, "<init>", "(JJI)V");
// Create a new RSA public key
publicKey = env->NewObject(clazzRSAPublicKey, mNewRSAPublicKey,
(jlong) hCryptProv, (jlong) hKey, keySize);
}
__finally
{
//--------------------------------------------------------------------
// Clean up.
if (pbKeyBlob)
env->ReleaseByteArrayElements(keyBlob, (jbyte *) pbKeyBlob,
JNI_ABORT);
}
return publicKey;
}
} /* extern "C" */
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