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/*
* XML Security Library (http://www.aleksey.com/xmlsec).
*
*
* This is free software; see Copyright file in the source
* distribution for preciese wording.
*
* Copyright (C) 2018 Miklos Vajna. All Rights Reserved.
*/
/**
* SECTION:digests
* @Short_description: Digests transforms implementation for Microsoft Cryptography API: Next Generation (CNG).
* @Stability: Private
*
*/
#include "globals.h"
#include <string.h>
#define WIN32_NO_STATUS
#include <windows.h>
#undef WIN32_NO_STATUS
#include <ntstatus.h>
#include <bcrypt.h>
#include <xmlsec/xmlsec.h>
#include <xmlsec/keys.h>
#include <xmlsec/transforms.h>
#include <xmlsec/errors.h>
#include <xmlsec/strings.h>
#include <xmlsec/mscng/crypto.h>
typedef struct _xmlSecMSCngDigestCtx xmlSecMSCngDigestCtx, *xmlSecMSCngDigestCtxPtr;
struct _xmlSecMSCngDigestCtx {
LPCWSTR pszAlgId;
DWORD cbHash;
PBYTE pbHash;
BCRYPT_ALG_HANDLE hAlg;
PBYTE pbHashObject;
BCRYPT_HASH_HANDLE hHash;
};
/******************************************************************************
*
* MSCng Digest transforms
*
* xmlSecMSCngDigestCtx is located after xmlSecTransform
*
*****************************************************************************/
#define xmlSecMSCngDigestSize \
(sizeof(xmlSecTransform) + sizeof(xmlSecMSCngDigestCtx))
#define xmlSecMSCngDigestGetCtx(transform) \
((xmlSecMSCngDigestCtxPtr)(((xmlSecByte*)(transform)) + sizeof(xmlSecTransform)))
static int xmlSecMSCngDigestInitialize (xmlSecTransformPtr transform);
static void xmlSecMSCngDigestFinalize (xmlSecTransformPtr transform);
static int xmlSecMSCngDigestVerify (xmlSecTransformPtr transform,
const xmlSecByte* data,
xmlSecSize dataSize,
xmlSecTransformCtxPtr transformCtx);
static int xmlSecMSCngDigestExecute (xmlSecTransformPtr transform,
int last,
xmlSecTransformCtxPtr transformCtx);
static int xmlSecMSCngDigestCheckId (xmlSecTransformPtr transform);
static int
xmlSecMSCngDigestCheckId(xmlSecTransformPtr transform) {
#ifndef XMLSEC_NO_MD5
if(xmlSecTransformCheckId(transform, xmlSecMSCngTransformMd5Id)) {
return(1);
} else
#endif /* XMLSEC_NO_MD5 */
#ifndef XMLSEC_NO_SHA1
if(xmlSecTransformCheckId(transform, xmlSecMSCngTransformSha1Id)) {
return(1);
} else
#endif /* XMLSEC_NO_SHA1 */
#ifndef XMLSEC_NO_SHA256
if(xmlSecTransformCheckId(transform, xmlSecMSCngTransformSha256Id)) {
return(1);
} else
#endif /* XMLSEC_NO_SHA256 */
#ifndef XMLSEC_NO_SHA384
if(xmlSecTransformCheckId(transform, xmlSecMSCngTransformSha384Id)) {
return(1);
} else
#endif /* XMLSEC_NO_SHA384 */
#ifndef XMLSEC_NO_SHA512
if(xmlSecTransformCheckId(transform, xmlSecMSCngTransformSha512Id)) {
return(1);
} else
#endif /* XMLSEC_NO_SHA512 */
return(0);
}
static int
xmlSecMSCngDigestInitialize(xmlSecTransformPtr transform) {
xmlSecMSCngDigestCtxPtr ctx;
xmlSecAssert2(xmlSecMSCngDigestCheckId(transform), -1);
xmlSecAssert2(xmlSecTransformCheckSize(transform, xmlSecMSCngDigestSize), -1);
ctx = xmlSecMSCngDigestGetCtx(transform);
xmlSecAssert2(ctx != NULL, -1);
/* initialize context */
memset(ctx, 0, sizeof(xmlSecMSCngDigestCtx));
#ifndef XMLSEC_NO_MD5
if(xmlSecTransformCheckId(transform, xmlSecMSCngTransformMd5Id)) {
ctx->pszAlgId = BCRYPT_MD5_ALGORITHM;
} else
#endif /* XMLSEC_NO_MD5 */
#ifndef XMLSEC_NO_SHA1
if(xmlSecTransformCheckId(transform, xmlSecMSCngTransformSha1Id)) {
ctx->pszAlgId = BCRYPT_SHA1_ALGORITHM;
} else
#endif /* XMLSEC_NO_SHA1 */
#ifndef XMLSEC_NO_SHA256
if(xmlSecTransformCheckId(transform, xmlSecMSCngTransformSha256Id)) {
ctx->pszAlgId = BCRYPT_SHA256_ALGORITHM;
} else
#endif /* XMLSEC_NO_SHA256 */
#ifndef XMLSEC_NO_SHA384
if(xmlSecTransformCheckId(transform, xmlSecMSCngTransformSha384Id)) {
ctx->pszAlgId = BCRYPT_SHA384_ALGORITHM;
} else
#endif /* XMLSEC_NO_SHA384 */
#ifndef XMLSEC_NO_SHA512
if(xmlSecTransformCheckId(transform, xmlSecMSCngTransformSha512Id)) {
ctx->pszAlgId = BCRYPT_SHA512_ALGORITHM;
} else
#endif /* XMLSEC_NO_SHA512 */
{
xmlSecInvalidTransfromError(transform);
return(-1);
}
return(0);
}
static void xmlSecMSCngDigestFinalize(xmlSecTransformPtr transform) {
xmlSecMSCngDigestCtxPtr ctx;
xmlSecAssert(xmlSecMSCngDigestCheckId(transform));
xmlSecAssert(xmlSecTransformCheckSize(transform, xmlSecMSCngDigestSize));
ctx = xmlSecMSCngDigestGetCtx(transform);
xmlSecAssert(ctx != NULL);
if(ctx->hAlg != 0) {
BCryptCloseAlgorithmProvider(ctx->hAlg, 0);
}
if(ctx->hHash != 0) {
BCryptDestroyHash(ctx->hHash);
}
if(ctx->pbHashObject != NULL) {
xmlFree(ctx->pbHashObject);
}
if(ctx->pbHash != NULL) {
xmlFree(ctx->pbHash);
}
memset(ctx, 0, sizeof(xmlSecMSCngDigestCtx));
}
static int
xmlSecMSCngDigestVerify(xmlSecTransformPtr transform,
const xmlSecByte* data,
xmlSecSize dataSize,
xmlSecTransformCtxPtr transformCtx) {
xmlSecMSCngDigestCtxPtr ctx;
xmlSecAssert2(xmlSecMSCngDigestCheckId(transform), -1);
xmlSecAssert2(xmlSecTransformCheckSize(transform, xmlSecMSCngDigestSize), -1);
xmlSecAssert2(transform->operation == xmlSecTransformOperationVerify, -1);
xmlSecAssert2(transform->status == xmlSecTransformStatusFinished, -1);
xmlSecAssert2(data != NULL, -1);
xmlSecAssert2(transformCtx != NULL, -1);
ctx = xmlSecMSCngDigestGetCtx(transform);
xmlSecAssert2(ctx != NULL, -1);
xmlSecAssert2(ctx->cbHash > 0, -1);
if(dataSize != ctx->cbHash) {
xmlSecInvalidSizeError("Digest", dataSize, ctx->cbHash,
xmlSecTransformGetName(transform));
transform->status = xmlSecTransformStatusFail;
return(0);
}
if(memcmp(ctx->pbHash, data, ctx->cbHash) != 0) {
xmlSecInvalidDataError("data and digest do not match",
xmlSecTransformGetName(transform));
transform->status = xmlSecTransformStatusFail;
return(0);
}
transform->status = xmlSecTransformStatusOk;
return(0);
}
static int
xmlSecMSCngDigestExecute(xmlSecTransformPtr transform,
int last,
xmlSecTransformCtxPtr transformCtx) {
xmlSecMSCngDigestCtxPtr ctx;
xmlSecBufferPtr in, out;
NTSTATUS status;
int ret;
DWORD cbData = 0;
DWORD cbHashObject = 0;
xmlSecAssert2(xmlSecMSCngDigestCheckId(transform), -1);
xmlSecAssert2((transform->operation == xmlSecTransformOperationSign) || (transform->operation == xmlSecTransformOperationVerify), -1);
xmlSecAssert2(xmlSecTransformCheckSize(transform, xmlSecMSCngDigestSize), -1);
xmlSecAssert2(transformCtx != NULL, -1);
in = &(transform->inBuf);
xmlSecAssert2(in != NULL, -1);
out = &(transform->outBuf);
xmlSecAssert2(out != NULL, -1);
ctx = xmlSecMSCngDigestGetCtx(transform);
xmlSecAssert2(ctx != NULL, -1);
if(transform->status == xmlSecTransformStatusNone) {
/* open an algorithm handle */
status = BCryptOpenAlgorithmProvider(
&ctx->hAlg,
ctx->pszAlgId,
NULL,
0);
if(status != STATUS_SUCCESS) {
xmlSecMSCngNtError("BCryptOpenAlgorithmProvider", xmlSecTransformGetName(transform), status);
return(-1);
}
/* calculate the size of the buffer to hold the hash object */
status = BCryptGetProperty(
ctx->hAlg,
BCRYPT_OBJECT_LENGTH,
(PBYTE)&cbHashObject,
sizeof(DWORD),
&cbData,
0);
if(status != STATUS_SUCCESS) {
xmlSecMSCngNtError("BCryptGetProperty", xmlSecTransformGetName(transform), status);
return(-1);
}
/* allocate the hash object on the heap */
ctx->pbHashObject = (PBYTE)xmlMalloc(cbHashObject);
if(ctx->pbHashObject == NULL) {
xmlSecMallocError(cbHashObject, NULL);
return(-1);
}
/* calculate the length of the hash */
status = BCryptGetProperty(
ctx->hAlg,
BCRYPT_HASH_LENGTH,
(PBYTE)&ctx->cbHash,
sizeof(DWORD),
&cbData,
0);
if(status != STATUS_SUCCESS) {
xmlSecMSCngNtError("BCryptGetProperty", xmlSecTransformGetName(transform), status);
return(-1);
}
/* allocate the hash buffer on the heap */
ctx->pbHash = (PBYTE)xmlMalloc(ctx->cbHash);
if(ctx->pbHash == NULL) {
xmlSecMallocError(ctx->cbHash, NULL);
return(-1);
}
/* create the hash */
status = BCryptCreateHash(
ctx->hAlg,
&ctx->hHash,
ctx->pbHashObject,
cbHashObject,
NULL,
0,
0);
if(status != STATUS_SUCCESS) {
xmlSecMSCngNtError("BCryptCreateHash", xmlSecTransformGetName(transform), status);
return(-1);
}
transform->status = xmlSecTransformStatusWorking;
}
if(transform->status == xmlSecTransformStatusWorking) {
xmlSecSize inSize;
inSize = xmlSecBufferGetSize(in);
if(inSize > 0) {
/* hash some data */
status = BCryptHashData(
ctx->hHash,
(PBYTE)xmlSecBufferGetData(in),
inSize,
0);
if(status != STATUS_SUCCESS) {
xmlSecMSCngNtError("BCryptHashData", xmlSecTransformGetName(transform), status);
return(-1);
}
ret = xmlSecBufferRemoveHead(in, inSize);
if(ret < 0) {
xmlSecInternalError("xmlSecBufferRemoveHead",
xmlSecTransformGetName(transform));
return(-1);
}
}
if(last) {
/* close the hash */
status = BCryptFinishHash(
ctx->hHash,
ctx->pbHash,
ctx->cbHash,
0);
if(status != STATUS_SUCCESS) {
xmlSecMSCngNtError("BCryptFinishHash", xmlSecTransformGetName(transform), status);
return(-1);
}
xmlSecAssert2(ctx->cbHash > 0, -1);
/* copy result to output */
if(transform->operation == xmlSecTransformOperationSign) {
ret = xmlSecBufferAppend(out, ctx->pbHash, ctx->cbHash);
if(ret < 0) {
xmlSecInternalError("xmlSecBufferAppend",
xmlSecTransformGetName(transform));
return(-1);
}
}
transform->status = xmlSecTransformStatusFinished;
}
} else if(transform->status == xmlSecTransformStatusFinished) {
xmlSecAssert2(xmlSecBufferGetSize(in) == 0, -1);
} else {
xmlSecInvalidTransfromStatusError(transform);
return(-1);
}
return(0);
}
#ifndef XMLSEC_NO_MD5
/******************************************************************************
*
* MD5
*
*****************************************************************************/
static xmlSecTransformKlass xmlSecMSCngMd5Klass = {
/* klass/object sizes */
sizeof(xmlSecTransformKlass), /* size_t klassSize */
xmlSecMSCngDigestSize, /* size_t objSize */
xmlSecNameMd5, /* const xmlChar* name; */
xmlSecHrefMd5, /* const xmlChar* href; */
xmlSecTransformUsageDigestMethod, /* xmlSecTransformUsage usage; */
xmlSecMSCngDigestInitialize, /* xmlSecTransformInitializeMethod initialize; */
xmlSecMSCngDigestFinalize, /* xmlSecTransformFinalizeMethod finalize; */
NULL, /* xmlSecTransformNodeReadMethod readNode; */
NULL, /* xmlSecTransformNodeWriteMethod writeNode; */
NULL, /* xmlSecTransformSetKeyReqMethod setKeyReq; */
NULL, /* xmlSecTransformSetKeyMethod setKey; */
xmlSecMSCngDigestVerify, /* xmlSecTransformVerifyMethod verify; */
xmlSecTransformDefaultGetDataType, /* xmlSecTransformGetDataTypeMethod getDataType; */
xmlSecTransformDefaultPushBin, /* xmlSecTransformPushBinMethod pushBin; */
xmlSecTransformDefaultPopBin, /* xmlSecTransformPopBinMethod popBin; */
NULL, /* xmlSecTransformPushXmlMethod pushXml; */
NULL, /* xmlSecTransformPopXmlMethod popXml; */
xmlSecMSCngDigestExecute, /* xmlSecTransformExecuteMethod execute; */
NULL, /* void* reserved0; */
NULL, /* void* reserved1; */
};
/**
* xmlSecMSCngTransformMd5GetKlass:
*
* MD-5 digest transform klass.
*
* Returns: pointer to MD-5 digest transform klass.
*/
xmlSecTransformId
xmlSecMSCngTransformMd5GetKlass(void) {
return(&xmlSecMSCngMd5Klass);
}
#endif /* XMLSEC_NO_MD5 */
#ifndef XMLSEC_NO_SHA1
/******************************************************************************
*
* SHA1
*
*****************************************************************************/
static xmlSecTransformKlass xmlSecMSCngSha1Klass = {
/* klass/object sizes */
sizeof(xmlSecTransformKlass), /* size_t klassSize */
xmlSecMSCngDigestSize, /* size_t objSize */
xmlSecNameSha1, /* const xmlChar* name; */
xmlSecHrefSha1, /* const xmlChar* href; */
xmlSecTransformUsageDigestMethod, /* xmlSecTransformUsage usage; */
xmlSecMSCngDigestInitialize, /* xmlSecTransformInitializeMethod initialize; */
xmlSecMSCngDigestFinalize, /* xmlSecTransformFinalizeMethod finalize; */
NULL, /* xmlSecTransformNodeReadMethod readNode; */
NULL, /* xmlSecTransformNodeWriteMethod writeNode; */
NULL, /* xmlSecTransformSetKeyReqMethod setKeyReq; */
NULL, /* xmlSecTransformSetKeyMethod setKey; */
xmlSecMSCngDigestVerify, /* xmlSecTransformVerifyMethod verify; */
xmlSecTransformDefaultGetDataType, /* xmlSecTransformGetDataTypeMethod getDataType; */
xmlSecTransformDefaultPushBin, /* xmlSecTransformPushBinMethod pushBin; */
xmlSecTransformDefaultPopBin, /* xmlSecTransformPopBinMethod popBin; */
NULL, /* xmlSecTransformPushXmlMethod pushXml; */
NULL, /* xmlSecTransformPopXmlMethod popXml; */
xmlSecMSCngDigestExecute, /* xmlSecTransformExecuteMethod execute; */
NULL, /* void* reserved0; */
NULL, /* void* reserved1; */
};
/**
* xmlSecMSCngTransformSha1GetKlass:
*
* SHA-1 digest transform klass.
*
* Returns: pointer to SHA-1 digest transform klass.
*/
xmlSecTransformId
xmlSecMSCngTransformSha1GetKlass(void) {
return(&xmlSecMSCngSha1Klass);
}
#endif /* XMLSEC_NO_SHA1 */
#ifndef XMLSEC_NO_SHA256
/******************************************************************************
*
* SHA256
*
*****************************************************************************/
static xmlSecTransformKlass xmlSecMSCngSha256Klass = {
/* klass/object sizes */
sizeof(xmlSecTransformKlass), /* size_t klassSize */
xmlSecMSCngDigestSize, /* size_t objSize */
xmlSecNameSha256, /* const xmlChar* name; */
xmlSecHrefSha256, /* const xmlChar* href; */
xmlSecTransformUsageDigestMethod, /* xmlSecTransformUsage usage; */
xmlSecMSCngDigestInitialize, /* xmlSecTransformInitializeMethod initialize; */
xmlSecMSCngDigestFinalize, /* xmlSecTransformFinalizeMethod finalize; */
NULL, /* xmlSecTransformNodeReadMethod readNode; */
NULL, /* xmlSecTransformNodeWriteMethod writeNode; */
NULL, /* xmlSecTransformSetKeyReqMethod setKeyReq; */
NULL, /* xmlSecTransformSetKeyMethod setKey; */
xmlSecMSCngDigestVerify, /* xmlSecTransformVerifyMethod verify; */
xmlSecTransformDefaultGetDataType, /* xmlSecTransformGetDataTypeMethod getDataType; */
xmlSecTransformDefaultPushBin, /* xmlSecTransformPushBinMethod pushBin; */
xmlSecTransformDefaultPopBin, /* xmlSecTransformPopBinMethod popBin; */
NULL, /* xmlSecTransformPushXmlMethod pushXml; */
NULL, /* xmlSecTransformPopXmlMethod popXml; */
xmlSecMSCngDigestExecute, /* xmlSecTransformExecuteMethod execute; */
NULL, /* void* reserved0; */
NULL, /* void* reserved1; */
};
/**
* xmlSecMSCngTransformSha256GetKlass:
*
* SHA-256 digest transform klass.
*
* Returns: pointer to SHA-256 digest transform klass.
*/
xmlSecTransformId
xmlSecMSCngTransformSha256GetKlass(void) {
return(&xmlSecMSCngSha256Klass);
}
#endif /* XMLSEC_NO_SHA256 */
#ifndef XMLSEC_NO_SHA384
/******************************************************************************
*
* SHA384
*
*****************************************************************************/
static xmlSecTransformKlass xmlSecMSCngSha384Klass = {
/* klass/object sizes */
sizeof(xmlSecTransformKlass), /* size_t klassSize */
xmlSecMSCngDigestSize, /* size_t objSize */
xmlSecNameSha384, /* const xmlChar* name; */
xmlSecHrefSha384, /* const xmlChar* href; */
xmlSecTransformUsageDigestMethod, /* xmlSecTransformUsage usage; */
xmlSecMSCngDigestInitialize, /* xmlSecTransformInitializeMethod initialize; */
xmlSecMSCngDigestFinalize, /* xmlSecTransformFinalizeMethod finalize; */
NULL, /* xmlSecTransformNodeReadMethod readNode; */
NULL, /* xmlSecTransformNodeWriteMethod writeNode; */
NULL, /* xmlSecTransformSetKeyReqMethod setKeyReq; */
NULL, /* xmlSecTransformSetKeyMethod setKey; */
xmlSecMSCngDigestVerify, /* xmlSecTransformVerifyMethod verify; */
xmlSecTransformDefaultGetDataType, /* xmlSecTransformGetDataTypeMethod getDataType; */
xmlSecTransformDefaultPushBin, /* xmlSecTransformPushBinMethod pushBin; */
xmlSecTransformDefaultPopBin, /* xmlSecTransformPopBinMethod popBin; */
NULL, /* xmlSecTransformPushXmlMethod pushXml; */
NULL, /* xmlSecTransformPopXmlMethod popXml; */
xmlSecMSCngDigestExecute, /* xmlSecTransformExecuteMethod execute; */
NULL, /* void* reserved0; */
NULL, /* void* reserved1; */
};
/**
* xmlSecMSCngTransformSha384GetKlass:
*
* SHA-256 digest transform klass.
*
* Returns: pointer to SHA-256 digest transform klass.
*/
xmlSecTransformId
xmlSecMSCngTransformSha384GetKlass(void) {
return(&xmlSecMSCngSha384Klass);
}
#endif /* XMLSEC_NO_SHA384 */
#ifndef XMLSEC_NO_SHA512
/******************************************************************************
*
* SHA512
*
*****************************************************************************/
static xmlSecTransformKlass xmlSecMSCngSha512Klass = {
/* klass/object sizes */
sizeof(xmlSecTransformKlass), /* size_t klassSize */
xmlSecMSCngDigestSize, /* size_t objSize */
xmlSecNameSha512, /* const xmlChar* name; */
xmlSecHrefSha512, /* const xmlChar* href; */
xmlSecTransformUsageDigestMethod, /* xmlSecTransformUsage usage; */
xmlSecMSCngDigestInitialize, /* xmlSecTransformInitializeMethod initialize; */
xmlSecMSCngDigestFinalize, /* xmlSecTransformFinalizeMethod finalize; */
NULL, /* xmlSecTransformNodeReadMethod readNode; */
NULL, /* xmlSecTransformNodeWriteMethod writeNode; */
NULL, /* xmlSecTransformSetKeyReqMethod setKeyReq; */
NULL, /* xmlSecTransformSetKeyMethod setKey; */
xmlSecMSCngDigestVerify, /* xmlSecTransformVerifyMethod verify; */
xmlSecTransformDefaultGetDataType, /* xmlSecTransformGetDataTypeMethod getDataType; */
xmlSecTransformDefaultPushBin, /* xmlSecTransformPushBinMethod pushBin; */
xmlSecTransformDefaultPopBin, /* xmlSecTransformPopBinMethod popBin; */
NULL, /* xmlSecTransformPushXmlMethod pushXml; */
NULL, /* xmlSecTransformPopXmlMethod popXml; */
xmlSecMSCngDigestExecute, /* xmlSecTransformExecuteMethod execute; */
NULL, /* void* reserved0; */
NULL, /* void* reserved1; */
};
/**
* xmlSecMSCngTransformSha512GetKlass:
*
* SHA-512 digest transform klass.
*
* Returns: pointer to SHA-512 digest transform klass.
*/
xmlSecTransformId
xmlSecMSCngTransformSha512GetKlass(void) {
return(&xmlSecMSCngSha512Klass);
}
#endif /* XMLSEC_NO_SHA512 */
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