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/* mz_crypt_win32.c -- Crypto/hash functions for Windows XP
part of the minizip-ng project
Copyright (C) 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>
#if _WIN32_WINNT <= _WIN32_WINNT_WINXP
#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 {
union {
struct {
HCRYPTPROV provider;
HCRYPTHASH hash;
};
};
int32_t error;
uint16_t algorithm;
} mz_crypt_sha;
/***************************************************************************/
static void mz_crypt_sha_free(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;
}
void mz_crypt_sha_reset(void *handle) {
mz_crypt_sha *sha = (mz_crypt_sha *)handle;
mz_crypt_sha_free(handle);
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)
return MZ_PARAM_ERROR;
if (sha->algorithm == MZ_HASH_SHA224)
return MZ_SUPPORT_ERROR;
switch (sha->algorithm) {
case MZ_HASH_SHA1:
alg_id = CALG_SHA1;
break;
#if NTDDI_VERSION > NTDDI_WINXPSP2
case MZ_HASH_SHA256:
alg_id = CALG_SHA_256;
break;
case MZ_HASH_SHA384:
alg_id = CALG_SHA_384;
break;
case MZ_HASH_SHA512:
alg_id = CALG_SHA_512;
break;
#else
case MZ_HASH_SHA256:
case MZ_HASH_SHA384:
case MZ_HASH_SHA512:
return MZ_SUPPORT_ERROR;
#endif
default:
return MZ_PARAM_ERROR;
}
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 || !buf || size < 0)
return MZ_PARAM_ERROR;
if (sha->algorithm == MZ_HASH_SHA224)
return MZ_SUPPORT_ERROR;
if (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 || !digest)
return MZ_PARAM_ERROR;
if (sha->algorithm == MZ_HASH_SHA224)
return MZ_SUPPORT_ERROR;
if (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;
}
int32_t mz_crypt_sha_set_algorithm(void *handle, uint16_t algorithm) {
mz_crypt_sha *sha = (mz_crypt_sha *)handle;
if (algorithm != MZ_HASH_SHA1)
return MZ_SUPPORT_ERROR;
sha->algorithm = algorithm;
return MZ_OK;
}
void *mz_crypt_sha_create(void) {
mz_crypt_sha *sha = (mz_crypt_sha *)calloc(1, sizeof(mz_crypt_sha));
if (sha)
sha->algorithm = MZ_HASH_SHA256;
return sha;
}
void mz_crypt_sha_delete(void **handle) {
mz_crypt_sha *sha = NULL;
if (!handle)
return;
sha = (mz_crypt_sha *)*handle;
if (sha) {
mz_crypt_sha_free(*handle);
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, const void *aad, int32_t aad_size, uint8_t *buf, int32_t size) {
mz_crypt_aes *aes = (mz_crypt_aes *)handle;
int32_t result = 0;
if (!aes || !buf || size % MZ_AES_BLOCK_SIZE != 0 || (aad && aad_size > 0))
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_encrypt_final(void *handle, uint8_t *buf, int32_t size, uint8_t *tag, int32_t tag_size) {
return MZ_SUPPORT_ERROR;
}
int32_t mz_crypt_aes_decrypt(void *handle, const void *aad, int32_t aad_size, uint8_t *buf, int32_t size) {
mz_crypt_aes *aes = (mz_crypt_aes *)handle;
int32_t result = 0;
if (!aes || !buf || size % MZ_AES_BLOCK_SIZE != 0 || (aad && aad_size > 0))
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;
}
int32_t mz_crypt_aes_decrypt_final(void *handle, uint8_t *buf, int32_t size, const uint8_t *tag, int32_t tag_length) {
return MZ_SUPPORT_ERROR;
}
static int32_t mz_crypt_aes_set_key(void *handle, const void *key, int32_t key_length,
const void *iv, int32_t iv_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;
uint8_t *key_blob = NULL;
int32_t key_blob_size = 0;
int32_t result = 0;
int32_t err = MZ_OK;
if (!aes || !key || !key_length)
return MZ_PARAM_ERROR;
if (iv && iv_length < MZ_AES_BLOCK_SIZE)
return MZ_PARAM_ERROR;
mz_crypt_aes_reset(handle);
if (aes->mode == MZ_AES_MODE_CBC)
mode = CRYPT_MODE_CBC;
else if (aes->mode == MZ_AES_MODE_ECB)
mode = CRYPT_MODE_ECB;
else if (aes->mode == MZ_AES_MODE_GCM)
return MZ_SUPPORT_ERROR;
else
return MZ_PARAM_ERROR;
if (key_length == 16)
alg_id = CALG_AES_128;
else if (key_length == 24)
alg_id = CALG_AES_192;
else if (key_length == 32)
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 *)malloc(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);
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 (result && err == MZ_OK && iv) {
if (aes->mode == MZ_AES_MODE_ECB)
return MZ_PARAM_ERROR;
result = CryptSetKeyParam(aes->key, KP_IV, iv, 0);
if (!result) {
aes->error = GetLastError();
return 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,
const void *iv, int32_t iv_length) {
return mz_crypt_aes_set_key(handle, key, key_length, iv, iv_length);
}
int32_t mz_crypt_aes_set_decrypt_key(void *handle, const void *key, int32_t key_length,
const void *iv, int32_t iv_length) {
return mz_crypt_aes_set_key(handle, key, key_length, iv, iv_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) {
mz_crypt_aes *aes = (mz_crypt_aes *)calloc(1, sizeof(mz_crypt_aes));
return aes;
}
void mz_crypt_aes_delete(void **handle) {
mz_crypt
8000
_aes *aes = NULL;
if (!handle)
return;
aes = (mz_crypt_aes *)*handle;
if (aes) {
mz_crypt_aes_free(*handle);
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 pad_key_length = key_length;
int32_t result = 0;
int32_t err = MZ_OK;
if (!hmac || !key)
return MZ_PARAM_ERROR;
mz_crypt_hmac_reset(handle);
if (hmac->algorithm == MZ_HASH_SHA1)
alg_id = CALG_SHA1;
else
#ifdef CALG_SHA_256
alg_id = CALG_SHA_256;
#else
return MZ_SUPPORT_ERROR;
#endif
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 {
/* Pad single char key to work around CryptImportKey returning ERROR_INVALID_PARAMETER */
if (pad_key_length == 1)
pad_key_length += 1;
key_blob_size = sizeof(key_blob_header_s) + pad_key_length;
key_blob = (uint8_t *)malloc(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 = pad_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);
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 || !buf || !hmac->hash)
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 || !digest || !hmac->hash)
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) {
mz_crypt_hmac *hmac = (mz_crypt_hmac *)calloc(1, sizeof(mz_crypt_hmac));
if (hmac)
hmac->algorithm = MZ_HASH_SHA256;
return hmac;
}
void mz_crypt_hmac_delete(void **handle) {
mz_crypt_hmac *hmac = NULL;
if (!handle)
return;
hmac = (mz_crypt_hmac *)*handle;
if (hmac) {
mz_crypt_hmac_free(*handle);
free(hmac);
}
*handle = NULL;
}
#endif