dolphin/Externals/minizip/mz_crypt_win32.c

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/* mz_crypt_win32.c -- Crypto/hash functions for Windows
part of the minizip-ng project
Copyright (C) 2010-2021 Nathan Moinvaziri
https://github.com/zlib-ng/minizip-ng
This program is distributed under the terms of the same license as zlib.
See the accompanying LICENSE file for the full text of the license.
*/
#include "mz.h"
#include "mz_os.h"
#include "mz_crypt.h"
#include <windows.h>
#include <wincrypt.h>
/***************************************************************************/
int32_t mz_crypt_rand(uint8_t *buf, int32_t size) {
HCRYPTPROV provider;
int32_t result = 0;
result = CryptAcquireContext(&provider, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_SILENT);
if (result) {
result = CryptGenRandom(provider, size, buf);
CryptReleaseContext(provider, 0);
if (result)
return size;
}
return mz_os_rand(buf, size);
}
/***************************************************************************/
typedef struct mz_crypt_sha_s {
HCRYPTPROV provider;
HCRYPTHASH hash;
int32_t error;
uint16_t algorithm;
} mz_crypt_sha;
/***************************************************************************/
void mz_crypt_sha_reset(void *handle) {
mz_crypt_sha *sha = (mz_crypt_sha *)handle;
if (sha->hash)
CryptDestroyHash(sha->hash);
sha->hash = 0;
if (sha->provider)
CryptReleaseContext(sha->provider, 0);
sha->provider = 0;
sha->error = 0;
}
int32_t mz_crypt_sha_begin(void *handle) {
mz_crypt_sha *sha = (mz_crypt_sha *)handle;
ALG_ID alg_id = 0;
int32_t result = 0;
int32_t err = MZ_OK;
if (sha == NULL)
return MZ_PARAM_ERROR;
if (sha->algorithm == MZ_HASH_SHA1)
alg_id = CALG_SHA1;
else
alg_id = CALG_SHA_256;
result = CryptAcquireContext(&sha->provider, NULL, NULL, PROV_RSA_AES, CRYPT_VERIFYCONTEXT | CRYPT_SILENT);
if (!result) {
sha->error = GetLastError();
err = MZ_CRYPT_ERROR;
}
if (result) {
result = CryptCreateHash(sha->provider, alg_id, 0, 0, &sha->hash);
if (!result) {
sha->error = GetLastError();
err = MZ_HASH_ERROR;
}
}
return err;
}
int32_t mz_crypt_sha_update(void *handle, const void *buf, int32_t size) {
mz_crypt_sha *sha = (mz_crypt_sha *)handle;
int32_t result = 0;
if (sha == NULL || buf == NULL || sha->hash == 0)
return MZ_PARAM_ERROR;
result = CryptHashData(sha->hash, buf, size, 0);
if (!result) {
sha->error = GetLastError();
return MZ_HASH_ERROR;
}
return size;
}
int32_t mz_crypt_sha_end(void *handle, uint8_t *digest, int32_t digest_size) {
mz_crypt_sha *sha = (mz_crypt_sha *)handle;
int32_t result = 0;
int32_t expected_size = 0;
if (sha == NULL || digest == NULL || sha->hash == 0)
return MZ_PARAM_ERROR;
result = CryptGetHashParam(sha->hash, HP_HASHVAL, NULL, (DWORD *)&expected_size, 0);
if (expected_size > digest_size)
return MZ_BUF_ERROR;
if (!result)
return MZ_HASH_ERROR;
result = CryptGetHashParam(sha->hash, HP_HASHVAL, digest, (DWORD *)&digest_size, 0);
if (!result) {
sha->error = GetLastError();
return MZ_HASH_ERROR;
}
return MZ_OK;
}
void mz_crypt_sha_set_algorithm(void *handle, uint16_t algorithm) {
mz_crypt_sha *sha = (mz_crypt_sha *)handle;
sha->algorithm = algorithm;
}
void *mz_crypt_sha_create(void **handle) {
mz_crypt_sha *sha = NULL;
sha = (mz_crypt_sha *)MZ_ALLOC(sizeof(mz_crypt_sha));
if (sha != NULL) {
memset(sha, 0, sizeof(mz_crypt_sha));
sha->algorithm = MZ_HASH_SHA256;
}
if (handle != NULL)
*handle = sha;
return sha;
}
void mz_crypt_sha_delete(void **handle) {
mz_crypt_sha *sha = NULL;
if (handle == NULL)
return;
sha = (mz_crypt_sha *)*handle;
if (sha != NULL) {
mz_crypt_sha_reset(*handle);
MZ_FREE(sha);
}
*handle = NULL;
}
/***************************************************************************/
typedef struct mz_crypt_aes_s {
HCRYPTPROV provider;
HCRYPTKEY key;
int32_t mode;
int32_t error;
} mz_crypt_aes;
/***************************************************************************/
static void mz_crypt_aes_free(void *handle) {
mz_crypt_aes *aes = (mz_crypt_aes *)handle;
if (aes->key)
CryptDestroyKey(aes->key);
aes->key = 0;
if (aes->provider)
CryptReleaseContext(aes->provider, 0);
aes->provider = 0;
}
void mz_crypt_aes_reset(void *handle) {
mz_crypt_aes_free(handle);
}
int32_t mz_crypt_aes_encrypt(void *handle, uint8_t *buf, int32_t size) {
mz_crypt_aes *aes = (mz_crypt_aes *)handle;
int32_t result = 0;
if (aes == NULL || buf == NULL)
return MZ_PARAM_ERROR;
if (size != MZ_AES_BLOCK_SIZE)
return MZ_PARAM_ERROR;
result = CryptEncrypt(aes->key, 0, 0, 0, buf, (DWORD *)&size, size);
if (!result) {
aes->error = GetLastError();
return MZ_CRYPT_ERROR;
}
return size;
}
int32_t mz_crypt_aes_decrypt(void *handle, uint8_t *buf, int32_t size) {
mz_crypt_aes *aes = (mz_crypt_aes *)handle;
int32_t result = 0;
if (aes == NULL || buf == NULL)
return MZ_PARAM_ERROR;
if (size != MZ_AES_BLOCK_SIZE)
return MZ_PARAM_ERROR;
result = CryptDecrypt(aes->key, 0, 0, 0, buf, (DWORD *)&size);
if (!result) {
aes->error = GetLastError();
return MZ_CRYPT_ERROR;
}
return size;
}
static int32_t mz_crypt_aes_set_key(void *handle, const void *key, int32_t key_length) {
mz_crypt_aes *aes = (mz_crypt_aes *)handle;
HCRYPTHASH hash = 0;
ALG_ID alg_id = 0;
typedef struct key_blob_header_s {
BLOBHEADER hdr;
uint32_t key_length;
} key_blob_header_s;
key_blob_header_s *key_blob_s = NULL;
uint32_t mode = CRYPT_MODE_ECB;
uint8_t *key_blob = NULL;
int32_t key_blob_size = 0;
int32_t result = 0;
int32_t err = MZ_OK;
if (aes == NULL || key == NULL)
return MZ_PARAM_ERROR;
mz_crypt_aes_reset(handle);
if (key_length == MZ_AES_KEY_LENGTH(MZ_AES_ENCRYPTION_MODE_128))
alg_id = CALG_AES_128;
else if (key_length == MZ_AES_KEY_LENGTH(MZ_AES_ENCRYPTION_MODE_192))
alg_id = CALG_AES_192;
else if (key_length == MZ_AES_KEY_LENGTH(MZ_AES_ENCRYPTION_MODE_256))
alg_id = CALG_AES_256;
else
return MZ_PARAM_ERROR;
result = CryptAcquireContext(&aes->provider, NULL, MS_ENH_RSA_AES_PROV, PROV_RSA_AES, CRYPT_VERIFYCONTEXT | CRYPT_SILENT);
if (result) {
key_blob_size = sizeof(key_blob_header_s) + key_length;
key_blob = (uint8_t *)MZ_ALLOC(key_blob_size);
if (key_blob) {
key_blob_s = (key_blob_header_s *)key_blob;
key_blob_s->hdr.bType = PLAINTEXTKEYBLOB;
key_blob_s->hdr.bVersion = CUR_BLOB_VERSION;
key_blob_s->hdr.aiKeyAlg = alg_id;
key_blob_s->hdr.reserved = 0;
key_blob_s->key_length = key_length;
memcpy(key_blob + sizeof(key_blob_header_s), key, key_length);
result = CryptImportKey(aes->provider, key_blob, key_blob_size, 0, 0, &aes->key);
SecureZeroMemory(key_blob, key_blob_size);
MZ_FREE(key_blob);
} else {
err = MZ_MEM_ERROR;
}
}
if (result && err == MZ_OK)
result = CryptSetKeyParam(aes->key, KP_MODE, (const uint8_t *)&mode, 0);
if (!result && err == MZ_OK) {
aes->error = GetLastError();
err = MZ_CRYPT_ERROR;
}
if (hash)
CryptDestroyHash(hash);
return err;
}
int32_t mz_crypt_aes_set_encrypt_key(void *handle, const void *key, int32_t key_length) {
return mz_crypt_aes_set_key(handle, key, key_length);
}
int32_t mz_crypt_aes_set_decrypt_key(void *handle, const void *key, int32_t key_length) {
return mz_crypt_aes_set_key(handle, key, key_length);
}
void mz_crypt_aes_set_mode(void *handle, int32_t mode) {
mz_crypt_aes *aes = (mz_crypt_aes *)handle;
aes->mode = mode;
}
void *mz_crypt_aes_create(void **handle) {
mz_crypt_aes *aes = NULL;
aes = (mz_crypt_aes *)MZ_ALLOC(sizeof(mz_crypt_aes));
if (aes != NULL)
memset(aes, 0, sizeof(mz_crypt_aes));
if (handle != NULL)
*handle = aes;
return aes;
}
void mz_crypt_aes_delete(void **handle) {
mz_crypt_aes *aes = NULL;
if (handle == NULL)
return;
aes = (mz_crypt_aes *)*handle;
if (aes != NULL) {
mz_crypt_aes_free(*handle);
MZ_FREE(aes);
}
*handle = NULL;
}
/***************************************************************************/
typedef struct mz_crypt_hmac_s {
HCRYPTPROV provider;
HCRYPTHASH hash;
HCRYPTKEY key;
HMAC_INFO info;
int32_t mode;
int32_t error;
uint16_t algorithm;
} mz_crypt_hmac;
/***************************************************************************/
static void mz_crypt_hmac_free(void *handle) {
mz_crypt_hmac *hmac = (mz_crypt_hmac *)handle;
if (hmac->key)
CryptDestroyKey(hmac->key);
hmac->key = 0;
if (hmac->hash)
CryptDestroyHash(hmac->hash);
hmac->hash = 0;
if (hmac->provider)
CryptReleaseContext(hmac->provider, 0);
hmac->provider = 0;
memset(&hmac->info, 0, sizeof(hmac->info));
}
void mz_crypt_hmac_reset(void *handle) {
mz_crypt_hmac_free(handle);
}
int32_t mz_crypt_hmac_init(void *handle, const void *key, int32_t key_length) {
mz_crypt_hmac *hmac = (mz_crypt_hmac *)handle;
ALG_ID alg_id = 0;
typedef struct key_blob_header_s {
BLOBHEADER hdr;
uint32_t key_length;
} key_blob_header_s;
key_blob_header_s *key_blob_s = NULL;
uint8_t *key_blob = NULL;
int32_t key_blob_size = 0;
int32_t result = 0;
int32_t err = MZ_OK;
if (hmac == NULL || key == NULL)
return MZ_PARAM_ERROR;
mz_crypt_hmac_reset(handle);
if (hmac->algorithm == MZ_HASH_SHA1)
alg_id = CALG_SHA1;
else
alg_id = CALG_SHA_256;
hmac->info.HashAlgid = alg_id;
result = CryptAcquireContext(&hmac->provider, NULL, MS_ENHANCED_PROV, PROV_RSA_FULL,
CRYPT_VERIFYCONTEXT | CRYPT_SILENT);
if (!result) {
hmac->error = GetLastError();
err = MZ_CRYPT_ERROR;
} else {
/* Zero-pad odd key lengths */
if (key_length % 2 == 1)
key_length += 1;
key_blob_size = sizeof(key_blob_header_s) + key_length;
key_blob = (uint8_t *)MZ_ALLOC(key_blob_size);
}
if (key_blob) {
memset(key_blob, 0, key_blob_size);
key_blob_s = (key_blob_header_s *)key_blob;
key_blob_s->hdr.bType = PLAINTEXTKEYBLOB;
key_blob_s->hdr.bVersion = CUR_BLOB_VERSION;
key_blob_s->hdr.aiKeyAlg = CALG_RC2;
key_blob_s->hdr.reserved = 0;
key_blob_s->key_length = key_length;
memcpy(key_blob + sizeof(key_blob_header_s), key, key_length);
result = CryptImportKey(hmac->provider, key_blob, key_blob_size, 0, CRYPT_IPSEC_HMAC_KEY, &hmac->key);
if (result)
result = CryptCreateHash(hmac->provider, CALG_HMAC, hmac->key, 0, &hmac->hash);
if (result)
result = CryptSetHashParam(hmac->hash, HP_HMAC_INFO, (uint8_t *)&hmac->info, 0);
SecureZeroMemory(key_blob, key_blob_size);
MZ_FREE(key_blob);
} else if (err == MZ_OK) {
err = MZ_MEM_ERROR;
}
if (!result) {
hmac->error = GetLastError();
err = MZ_CRYPT_ERROR;
}
if (err != MZ_OK)
mz_crypt_hmac_free(handle);
return err;
}
int32_t mz_crypt_hmac_update(void *handle, const void *buf, int32_t size) {
mz_crypt_hmac *hmac = (mz_crypt_hmac *)handle;
int32_t result = 0;
if (hmac == NULL || buf == NULL || hmac->hash == 0)
return MZ_PARAM_ERROR;
result = CryptHashData(hmac->hash, buf, size, 0);
if (!result) {
hmac->error = GetLastError();
return MZ_HASH_ERROR;
}
return MZ_OK;
}
int32_t mz_crypt_hmac_end(void *handle, uint8_t *digest, int32_t digest_size) {
mz_crypt_hmac *hmac = (mz_crypt_hmac *)handle;
int32_t result = 0;
int32_t expected_size = 0;
if (hmac == NULL || digest == NULL || hmac->hash == 0)
return MZ_PARAM_ERROR;
result = CryptGetHashParam(hmac->hash, HP_HASHVAL, NULL, (DWORD *)&expected_size, 0);
if (expected_size > digest_size)
return MZ_BUF_ERROR;
if (!result)
return MZ_HASH_ERROR;
result = CryptGetHashParam(hmac->hash, HP_HASHVAL, digest, (DWORD *)&digest_size, 0);
if (!result) {
hmac->error = GetLastError();
return MZ_HASH_ERROR;
}
return MZ_OK;
}
void mz_crypt_hmac_set_algorithm(void *handle, uint16_t algorithm) {
mz_crypt_hmac *hmac = (mz_crypt_hmac *)handle;
hmac->algorithm = algorithm;
}
int32_t mz_crypt_hmac_copy(void *src_handle, void *target_handle) {
mz_crypt_hmac *source = (mz_crypt_hmac *)src_handle;
mz_crypt_hmac *target = (mz_crypt_hmac *)target_handle;
int32_t result = 0;
int32_t err = MZ_OK;
if (target->hash) {
CryptDestroyHash(target->hash);
target->hash = 0;
}
result = CryptDuplicateHash(source->hash, NULL, 0, &target->hash);
if (!result) {
target->error = GetLastError();
err = MZ_HASH_ERROR;
}
return err;
}
void *mz_crypt_hmac_create(void **handle) {
mz_crypt_hmac *hmac = NULL;
hmac = (mz_crypt_hmac *)MZ_ALLOC(sizeof(mz_crypt_hmac));
if (hmac != NULL) {
memset(hmac, 0, sizeof(mz_crypt_hmac));
hmac->algorithm = MZ_HASH_SHA256;
}
if (handle != NULL)
*handle = hmac;
return hmac;
}
void mz_crypt_hmac_delete(void **handle) {
mz_crypt_hmac *hmac = NULL;
if (handle == NULL)
return;
hmac = (mz_crypt_hmac *)*handle;
if (hmac != NULL) {
mz_crypt_hmac_free(*handle);
MZ_FREE(hmac);
}
*handle = NULL;
}
/***************************************************************************/
#if defined(MZ_ZIP_SIGNING)
int32_t mz_crypt_sign(uint8_t *message, int32_t message_size, uint8_t *cert_data, int32_t cert_data_size,
const char *cert_pwd, uint8_t **signature, int32_t *signature_size) {
CRYPT_SIGN_MESSAGE_PARA sign_params;
CRYPT_DATA_BLOB cert_data_blob;
PCCERT_CONTEXT cert_context = NULL;
HCERTSTORE cert_store = 0;
wchar_t *password_wide = NULL;
int32_t result = 0;
int32_t err = MZ_OK;
uint32_t messages_sizes[1];
uint8_t *messages[1];
if (message == NULL || cert_data == NULL || signature == NULL || signature_size == NULL)
return MZ_PARAM_ERROR;
*signature = NULL;
*signature_size = 0;
cert_data_blob.pbData = cert_data;
cert_data_blob.cbData = cert_data_size;
password_wide = mz_os_unicode_string_create(cert_pwd, MZ_ENCODING_UTF8);
if (password_wide) {
cert_store = PFXImportCertStore(&cert_data_blob, password_wide, 0);
mz_os_unicode_string_delete(&password_wide);
}
if (cert_store == NULL)
cert_store = PFXImportCertStore(&cert_data_blob, L"", 0);
if (cert_store == NULL)
cert_store = PFXImportCertStore(&cert_data_blob, NULL, 0);
if (cert_store == NULL)
return MZ_PARAM_ERROR;
if (err == MZ_OK) {
cert_context = CertFindCertificateInStore(cert_store,
X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, 0, CERT_FIND_HAS_PRIVATE_KEY, NULL, NULL);
if (cert_context == NULL)
err = MZ_PARAM_ERROR;
}
if (err == MZ_OK) {
memset(&sign_params, 0, sizeof(sign_params));
sign_params.cbSize = sizeof(sign_params);
sign_params.dwMsgEncodingType = PKCS_7_ASN_ENCODING | X509_ASN_ENCODING;
sign_params.pSigningCert = cert_context;
sign_params.HashAlgorithm.pszObjId = szOID_NIST_sha256;
sign_params.cMsgCert = 1;
sign_params.rgpMsgCert = &cert_context;
messages[0] = message;
messages_sizes[0] = message_size;
#if 0 /* Timestamp support */
CRYPT_ATTR_BLOB crypt_blob;
CRYPT_TIMESTAMP_CONTEXT *ts_context = NULL;
CRYPT_ATTRIBUTE unauth_attribs[1];
wchar_t *timestamp_url_wide = NULL;
const char *timestamp_url = NULL;
if (timestamp_url != NULL)
timestamp_url_wide = mz_os_unicode_string_create(timestamp_url);
if (timestamp_url_wide != NULL) {
result = CryptRetrieveTimeStamp(timestamp_url_wide,
TIMESTAMP_NO_AUTH_RETRIEVAL | TIMESTAMP_VERIFY_CONTEXT_SIGNATURE, 0, szOID_NIST_sha256,
NULL, message, message_size, &ts_context, NULL, NULL);
mz_os_unicode_string_delete(&timestamp_url_wide);
if ((result) && (ts_context != NULL)) {
crypt_blob.cbData = ts_context->cbEncoded;
crypt_blob.pbData = ts_context->pbEncoded;
unauth_attribs[0].pszObjId = "1.2.840.113549.1.9.16.2.14"; //id-smime-aa-timeStampToken
unauth_attribs[0].cValue = 1;
unauth_attribs[0].rgValue = &crypt_blob;
sign_params.rgUnauthAttr = &unauth_attribs[0];
sign_params.cUnauthAttr = 1;
}
}
if (ts_context != NULL)
CryptMemFree(ts_context);
if (result)
#endif
result = CryptSignMessage(&sign_params, FALSE, 1, (const BYTE **)messages, (DWORD *)messages_sizes,
NULL, (DWORD *)signature_size);
if (result && *signature_size > 0)
*signature = (uint8_t *)MZ_ALLOC(*signature_size);
if (result && *signature != NULL)
result = CryptSignMessage(&sign_params, FALSE, 1, (const BYTE **)messages, (DWORD *)messages_sizes,
*signature, (DWORD *)signature_size);
if (!result)
err = MZ_SIGN_ERROR;
}
if (cert_context != NULL)
CertFreeCertificateContext(cert_context);
if (cert_store != NULL)
CertCloseStore(cert_store, 0);
return err;
}
int32_t mz_crypt_sign_verify(uint8_t *message, int32_t message_size, uint8_t *signature, int32_t signature_size) {
CRYPT_VERIFY_MESSAGE_PARA verify_params;
CERT_CONTEXT *signer_cert = NULL;
CERT_CHAIN_PARA chain_para;
CERT_CHAIN_CONTEXT *chain_context = NULL;
CERT_CHAIN_POLICY_PARA chain_policy;
CERT_CHAIN_POLICY_STATUS chain_policy_status;
HCRYPTMSG crypt_msg = 0;
int32_t result = 0;
int32_t err = MZ_SIGN_ERROR;
uint8_t *decoded = NULL;
int32_t decoded_size = 0;
memset(&verify_params, 0, sizeof(verify_params));
verify_params.cbSize = sizeof(verify_params);
verify_params.dwMsgAndCertEncodingType = PKCS_7_ASN_ENCODING | X509_ASN_ENCODING;
result = CryptVerifyMessageSignature(&verify_params, 0, signature, signature_size,
NULL, (DWORD *)&decoded_size, NULL);
if (result && decoded_size > 0)
decoded = (uint8_t *)MZ_ALLOC(decoded_size);
if (result && decoded != NULL)
result = CryptVerifyMessageSignature(&verify_params, 0, signature, signature_size,
decoded, (DWORD *)&decoded_size, (const CERT_CONTEXT **)&signer_cert);
/* Get and validate certificate chain */
memset(&chain_para, 0, sizeof(chain_para));
if (result && signer_cert != NULL)
result = CertGetCertificateChain(NULL, signer_cert, NULL, NULL, &chain_para,
CERT_CHAIN_REVOCATION_CHECK_CHAIN_EXCLUDE_ROOT, NULL, (const CERT_CHAIN_CONTEXT **)&chain_context);
memset(&chain_policy, 0, sizeof(chain_policy));
chain_policy.cbSize = sizeof(CERT_CHAIN_POLICY_PARA);
memset(&chain_policy_status, 0, sizeof(chain_policy_status));
chain_policy_status.cbSize = sizeof(CERT_CHAIN_POLICY_STATUS);
if (result && chain_context != NULL)
result = CertVerifyCertificateChainPolicy(CERT_CHAIN_POLICY_BASE, chain_context,
&chain_policy, &chain_policy_status);
if (chain_policy_status.dwError != S_OK)
result = 0;
#if 0
crypt_msg = CryptMsgOpenToDecode(PKCS_7_ASN_ENCODING | X509_ASN_ENCODING, 0, 0, 0, NULL, NULL);
if (crypt_msg != NULL) {
/* Timestamp support */
PCRYPT_ATTRIBUTES unauth_attribs = NULL;
HCRYPTMSG ts_msg = 0;
uint8_t *ts_content = NULL;
int32_t ts_content_size = 0;
uint8_t *ts_signature = NULL;
int32_t ts_signature_size = 0;
result = CryptMsgUpdate(crypt_msg, signature, signature_size, 1);
if (result)
CryptMsgGetParam(crypt_msg, CMSG_SIGNER_UNAUTH_ATTR_PARAM, 0, NULL, &ts_signature_size);
if ((result) && (ts_signature_size > 0))
ts_signature = (uint8_t *)MZ_ALLOC(ts_signature_size);
if ((result) && (ts_signature != NULL)) {
result = CryptMsgGetParam(crypt_msg, CMSG_SIGNER_UNAUTH_ATTR_PARAM, 0, ts_signature,
&ts_signature_size);
if (result)
{
unauth_attribs = (PCRYPT_ATTRIBUTES)ts_signature;
if ((unauth_attribs->cAttr > 0) && (unauth_attribs->rgAttr[0].cValue > 0))
{
ts_content = unauth_attribs->rgAttr[0].rgValue->pbData;
ts_content_size = unauth_attribs->rgAttr[0].rgValue->cbData;
}
}
if ((result) && (ts_content != NULL))
result = CryptVerifyTimeStampSignature(ts_content, ts_content_size, decoded,
decoded_size, 0, &crypt_context, NULL, NULL);
if (result)
err = MZ_OK;
}
if (ts_signature != NULL)
MZ_FREE(ts_signature);
if (crypt_context != NULL)
CryptMemFree(crypt_context);
} else {
result = 0;
}
#endif
if ((result) && (decoded != NULL) && (decoded_size == message_size)) {
/* Verify cms message with our stored message */
if (memcmp(decoded, message, message_size) == 0)
err = MZ_OK;
}
if (chain_context != NULL)
CertFreeCertificateChain(chain_context);
if (signer_cert != NULL)
CertFreeCertificateContext(signer_cert);
if (crypt_msg != NULL)
CryptMsgClose(crypt_msg);
if (decoded != NULL)
MZ_FREE(decoded);
return err;
}
#endif