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Sweden-Number/dlls/rsaenh/implglue.c

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/*
* dlls/rsaenh/implglue.c
* Glueing the RSAENH specific code to the crypto library
*
* Copyright (c) 2004 Michael Jung
*
* based on code by Mike McCormack and David Hammerton
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include "wine/library.h"
#include "wine/debug.h"
#include "windef.h"
#include "wincrypt.h"
#include "implglue.h"
#include <stdio.h>
WINE_DEFAULT_DEBUG_CHANNEL(crypt);
/* Function prototypes copied from dlls/advapi32/crypt_md4.c */
VOID WINAPI MD4Init( MD4_CTX *ctx );
VOID WINAPI MD4Update( MD4_CTX *ctx, const unsigned char *buf, unsigned int len );
VOID WINAPI MD4Final( MD4_CTX *ctx );
/* Function prototypes copied from dlls/advapi32/crypt_md5.c */
VOID WINAPI MD5Init( MD5_CTX *ctx );
VOID WINAPI MD5Update( MD5_CTX *ctx, const unsigned char *buf, unsigned int len );
VOID WINAPI MD5Final( MD5_CTX *ctx );
/* Function prototypes copied from dlls/advapi32/crypt_sha.c */
VOID WINAPI A_SHAInit(PSHA_CTX Context);
VOID WINAPI A_SHAUpdate(PSHA_CTX Context, PCHAR Buffer, UINT BufferSize);
VOID WINAPI A_SHAFinal(PSHA_CTX Context, PULONG Result);
BOOL init_hash_impl(ALG_ID aiAlgid, HASH_CONTEXT *pHashContext)
{
switch (aiAlgid)
{
case CALG_MD2:
md2_init(&pHashContext->md2);
break;
case CALG_MD4:
MD4Init(&pHashContext->md4);
break;
case CALG_MD5:
MD5Init(&pHashContext->md5);
break;
case CALG_SHA:
A_SHAInit(&pHashContext->sha);
break;
default:
SetLastError(NTE_BAD_ALGID);
return FALSE;
}
return TRUE;
}
BOOL update_hash_impl(ALG_ID aiAlgid, HASH_CONTEXT *pHashContext, CONST BYTE *pbData,
DWORD dwDataLen)
{
switch (aiAlgid)
{
case CALG_MD2:
md2_process(&pHashContext->md2, pbData, dwDataLen);
break;
case CALG_MD4:
MD4Update(&pHashContext->md4, pbData, dwDataLen);
break;
case CALG_MD5:
MD5Update(&pHashContext->md5, pbData, dwDataLen);
break;
case CALG_SHA:
A_SHAUpdate(&pHashContext->sha, (PCHAR)pbData, dwDataLen);
break;
default:
SetLastError(NTE_BAD_ALGID);
return FALSE;
}
return TRUE;
}
BOOL finalize_hash_impl(ALG_ID aiAlgid, HASH_CONTEXT *pHashContext, BYTE *pbHashValue)
{
switch (aiAlgid)
{
case CALG_MD2:
md2_done(&pHashContext->md2, pbHashValue);
break;
case CALG_MD4:
MD4Final(&pHashContext->md4);
memcpy(pbHashValue, pHashContext->md4.digest, 16);
break;
case CALG_MD5:
MD5Final(&pHashContext->md5);
memcpy(pbHashValue, pHashContext->md5.digest, 16);
break;
case CALG_SHA:
A_SHAFinal(&pHashContext->sha, (PULONG)pbHashValue);
break;
default:
SetLastError(NTE_BAD_ALGID);
return FALSE;
}
return TRUE;
}
BOOL duplicate_hash_impl(ALG_ID aiAlgid, CONST HASH_CONTEXT *pSrcHashContext,
HASH_CONTEXT *pDestHashContext)
{
memcpy(pDestHashContext, pSrcHashContext, sizeof(HASH_CONTEXT));
return TRUE;
}
BOOL new_key_impl(ALG_ID aiAlgid, KEY_CONTEXT *pKeyContext, DWORD dwKeyLen)
{
switch (aiAlgid)
{
case CALG_RSA_KEYX:
case CALG_RSA_SIGN:
if (rsa_make_key((int)dwKeyLen, 65537, &pKeyContext->rsa) != CRYPT_OK) {
SetLastError(NTE_FAIL);
return FALSE;
}
return TRUE;
}
return TRUE;
}
BOOL free_key_impl(ALG_ID aiAlgid, KEY_CONTEXT *pKeyContext)
{
switch (aiAlgid)
{
case CALG_RSA_KEYX:
case CALG_RSA_SIGN:
rsa_free(&pKeyContext->rsa);
}
return TRUE;
}
BOOL setup_key_impl(ALG_ID aiAlgid, KEY_CONTEXT *pKeyContext, DWORD dwKeyLen, DWORD dwSaltLen,
BYTE *abKeyValue)
{
switch (aiAlgid)
{
case CALG_RC4:
rc4_start(&pKeyContext->rc4);
rc4_add_entropy(abKeyValue, dwKeyLen + dwSaltLen, &pKeyContext->rc4);
rc4_ready(&pKeyContext->rc4);
break;
case CALG_RC2:
rc2_setup(abKeyValue, dwKeyLen + dwSaltLen, dwKeyLen << 3, 0, &pKeyContext->rc2);
break;
case CALG_3DES:
des3_setup(abKeyValue, 24, 0, &pKeyContext->des3);
break;
case CALG_3DES_112:
memcpy(abKeyValue+16, abKeyValue, 8);
des3_setup(abKeyValue, 24, 0, &pKeyContext->des3);
break;
case CALG_DES:
des_setup(abKeyValue, 8, 0, &pKeyContext->des);
break;
default:
SetLastError(NTE_BAD_ALGID);
return FALSE;
}
return TRUE;
}
BOOL duplicate_key_impl(ALG_ID aiAlgid, CONST KEY_CONTEXT *pSrcKeyContext,
KEY_CONTEXT *pDestKeyContext)
{
switch (aiAlgid)
{
case CALG_RC4:
case CALG_RC2:
case CALG_3DES:
case CALG_3DES_112:
case CALG_DES:
memcpy(pDestKeyContext, pSrcKeyContext, sizeof(KEY_CONTEXT));
break;
case CALG_RSA_KEYX:
case CALG_RSA_SIGN:
pDestKeyContext->rsa.type = pSrcKeyContext->rsa.type;
mp_init_copy(&pDestKeyContext->rsa.e, &pSrcKeyContext->rsa.e);
mp_init_copy(&pDestKeyContext->rsa.d, &pSrcKeyContext->rsa.d);
mp_init_copy(&pDestKeyContext->rsa.N, &pSrcKeyContext->rsa.N);
mp_init_copy(&pDestKeyContext->rsa.p, &pSrcKeyContext->rsa.p);
mp_init_copy(&pDestKeyContext->rsa.q, &pSrcKeyContext->rsa.q);
mp_init_copy(&pDestKeyContext->rsa.qP, &pSrcKeyContext->rsa.qP);
mp_init_copy(&pDestKeyContext->rsa.dP, &pSrcKeyContext->rsa.dP);
mp_init_copy(&pDestKeyContext->rsa.dQ, &pSrcKeyContext->rsa.dQ);
break;
default:
SetLastError(NTE_BAD_ALGID);
return FALSE;
}
return TRUE;
}
static inline void reverse_bytes(BYTE *pbData, DWORD dwLen) {
BYTE swap;
DWORD i;
for (i=0; i<dwLen/2; i++) {
swap = pbData[i];
pbData[i] = pbData[dwLen-i-1];
pbData[dwLen-i-1] = swap;
}
}
BOOL encrypt_block_impl(ALG_ID aiAlgid, KEY_CONTEXT *pKeyContext, CONST BYTE *in, BYTE *out,
DWORD enc)
{
unsigned long inlen, outlen;
switch (aiAlgid) {
case CALG_RC2:
if (enc) {
rc2_ecb_encrypt(in, out, &pKeyContext->rc2);
} else {
rc2_ecb_decrypt(in, out, &pKeyContext->rc2);
}
break;
case CALG_3DES:
case CALG_3DES_112:
if (enc) {
des3_ecb_encrypt(in, out, &pKeyContext->des3);
} else {
des3_ecb_decrypt(in, out, &pKeyContext->des3);
}
break;
case CALG_DES:
if (enc) {
des_ecb_encrypt(in, out, &pKeyContext->des);
} else {
des_ecb_decrypt(in, out, &pKeyContext->des);
}
break;
case CALG_RSA_KEYX:
outlen = inlen = (mp_count_bits(&pKeyContext->rsa.N)+7)/8;
if (enc) {
if (rsa_exptmod(in, inlen, out, &outlen, PK_PUBLIC, &pKeyContext->rsa) != CRYPT_OK) {
SetLastError(NTE_FAIL);
return FALSE;
}
reverse_bytes((BYTE*)in, inlen);
} else {
reverse_bytes((BYTE*)in, inlen);
if (rsa_exptmod(in, inlen, out, &outlen, PK_PRIVATE, &pKeyContext->rsa) != CRYPT_OK) {
SetLastError(NTE_FAIL);
return FALSE;
}
}
break;
case CALG_RSA_SIGN:
outlen = inlen = (mp_count_bits(&pKeyContext->rsa.N)+7)/8;
if (enc) {
rsa_exptmod(in, inlen, out, &outlen, PK_PRIVATE, &pKeyContext->rsa);
reverse_bytes((BYTE*)in, inlen);
} else {
reverse_bytes((BYTE*)in, inlen);
rsa_exptmod(in, inlen, out, &outlen, PK_PUBLIC, &pKeyContext->rsa);
}
break;
default:
SetLastError(NTE_BAD_ALGID);
return FALSE;
}
return TRUE;
}
BOOL encrypt_stream_impl(ALG_ID aiAlgid, KEY_CONTEXT *pKeyContext, BYTE *stream, DWORD dwLen)
{
switch (aiAlgid) {
case CALG_RC4:
rc4_read(stream, dwLen, &pKeyContext->rc4);
break;
default:
SetLastError(NTE_BAD_ALGID);
return FALSE;
}
return TRUE;
}
BOOL gen_rand_impl(BYTE *pbBuffer, DWORD dwLen)
{
int dev_random;
/* FIXME: /dev/urandom does not provide random numbers of a sufficient
* quality for cryptographic applications. /dev/random is much better,
* but it blocks if the kernel has not yet collected enough entropy for
* the request, which will suspend the calling thread for an indefinite
* amount of time. */
dev_random = open("/dev/urandom", O_RDONLY);
if (dev_random != -1)
{
if (read(dev_random, pbBuffer, dwLen) == (ssize_t)dwLen)
{
close(dev_random);
return TRUE;
}
close(dev_random);
}
SetLastError(NTE_FAIL);
return FALSE;
}
BOOL export_public_key_impl(BYTE *pbDest, KEY_CONTEXT *pKeyContext, DWORD dwKeyLen,DWORD *pdwPubExp)
{
mp_to_unsigned_bin(&pKeyContext->rsa.N, pbDest);
reverse_bytes(pbDest, dwKeyLen);
*pdwPubExp = (DWORD)mp_get_int(&pKeyContext->rsa.e);
return TRUE;
}
BOOL import_public_key_impl(CONST BYTE *pbSrc, KEY_CONTEXT *pKeyContext, DWORD dwKeyLen,
DWORD dwPubExp)
{
BYTE *pbTemp;
if (mp_init_multi(&pKeyContext->rsa.e, &pKeyContext->rsa.d, &pKeyContext->rsa.N,
&pKeyContext->rsa.dQ,&pKeyContext->rsa.dP,&pKeyContext->rsa.qP,
&pKeyContext->rsa.p, &pKeyContext->rsa.q, NULL) != MP_OKAY)
{
SetLastError(NTE_FAIL);
return FALSE;
}
pbTemp = (BYTE*)HeapAlloc(GetProcessHeap(), 0, dwKeyLen);
if (!pbTemp) return FALSE;
memcpy(pbTemp, pbSrc, dwKeyLen);
pKeyContext->rsa.type = PK_PUBLIC;
reverse_bytes(pbTemp, dwKeyLen);
mp_read_unsigned_bin(&pKeyContext->rsa.N, pbTemp, dwKeyLen);
HeapFree(GetProcessHeap(), 0, pbTemp);
mp_set_int(&pKeyContext->rsa.e, dwPubExp);
return TRUE;
}
BOOL export_private_key_impl(BYTE *pbDest, KEY_CONTEXT *pKeyContext, DWORD dwKeyLen,
DWORD *pdwPubExp)
{
mp_to_unsigned_bin(&pKeyContext->rsa.N, pbDest);
reverse_bytes(pbDest, dwKeyLen);
pbDest += dwKeyLen;
mp_to_unsigned_bin(&pKeyContext->rsa.p, pbDest);
reverse_bytes(pbDest, (dwKeyLen+1)>>1);
pbDest += (dwKeyLen+1)>>1;
mp_to_unsigned_bin(&pKeyContext->rsa.q, pbDest);
reverse_bytes(pbDest, (dwKeyLen+1)>>1);
pbDest += (dwKeyLen+1)>>1;
mp_to_unsigned_bin(&pKeyContext->rsa.dP, pbDest);
reverse_bytes(pbDest, (dwKeyLen+1)>>1);
pbDest += (dwKeyLen+1)>>1;
mp_to_unsigned_bin(&pKeyContext->rsa.dQ, pbDest);
reverse_bytes(pbDest, (dwKeyLen+1)>>1);
pbDest += (dwKeyLen+1)>>1;
mp_to_unsigned_bin(&pKeyContext->rsa.qP, pbDest);
reverse_bytes(pbDest, (dwKeyLen+1)>>1);
pbDest += (dwKeyLen+1)>>1;
mp_to_unsigned_bin(&pKeyContext->rsa.d, pbDest);
reverse_bytes(pbDest, dwKeyLen);
*pdwPubExp = (DWORD)mp_get_int(&pKeyContext->rsa.e);
return TRUE;
}
BOOL import_private_key_impl(CONST BYTE *pbSrc, KEY_CONTEXT *pKeyContext, DWORD dwKeyLen,
DWORD dwPubExp)
{
BYTE *pbTemp, *pbBigNum;
if (mp_init_multi(&pKeyContext->rsa.e, &pKeyContext->rsa.d, &pKeyContext->rsa.N,
&pKeyContext->rsa.dQ,&pKeyContext->rsa.dP,&pKeyContext->rsa.qP,
&pKeyContext->rsa.p, &pKeyContext->rsa.q, NULL) != MP_OKAY)
{
SetLastError(NTE_FAIL);
return FALSE;
}
pbTemp = HeapAlloc(GetProcessHeap(), 0, 2*dwKeyLen+5*((dwKeyLen+1)>>1));
if (!pbTemp) return FALSE;
memcpy(pbTemp, pbSrc, 2*dwKeyLen+5*((dwKeyLen+1)>>1));
pbBigNum = pbTemp;
pKeyContext->rsa.type = PK_PRIVATE;
reverse_bytes(pbBigNum, dwKeyLen);
mp_read_unsigned_bin(&pKeyContext->rsa.N, pbBigNum, dwKeyLen);
pbBigNum += dwKeyLen;
reverse_bytes(pbBigNum, (dwKeyLen+1)>>1);
mp_read_unsigned_bin(&pKeyContext->rsa.p, pbBigNum, (dwKeyLen+1)>>1);
pbBigNum += (dwKeyLen+1)>>1;
reverse_bytes(pbBigNum, (dwKeyLen+1)>>1);
mp_read_unsigned_bin(&pKeyContext->rsa.q, pbBigNum, (dwKeyLen+1)>>1);
pbBigNum += (dwKeyLen+1)>>1;
reverse_bytes(pbBigNum, (dwKeyLen+1)>>1);
mp_read_unsigned_bin(&pKeyContext->rsa.dP, pbBigNum, (dwKeyLen+1)>>1);
pbBigNum += (dwKeyLen+1)>>1;
reverse_bytes(pbBigNum, (dwKeyLen+1)>>1);
mp_read_unsigned_bin(&pKeyContext->rsa.dQ, pbBigNum, (dwKeyLen+1)>>1);
pbBigNum += (dwKeyLen+1)>>1;
reverse_bytes(pbBigNum, (dwKeyLen+1)>>1);
mp_read_unsigned_bin(&pKeyContext->rsa.qP, pbBigNum, (dwKeyLen+1)>>1);
pbBigNum += (dwKeyLen+1)>>1;
reverse_bytes(pbBigNum, dwKeyLen);
mp_read_unsigned_bin(&pKeyContext->rsa.d, pbBigNum, dwKeyLen);
mp_set_int(&pKeyContext->rsa.e, dwPubExp);
HeapFree(GetProcessHeap(), 0, pbTemp);
return TRUE;
}
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