diff options
Diffstat (limited to 'third_party/heimdal/lib/hcrypto/evp-w32.c')
| -rw-r--r-- | third_party/heimdal/lib/hcrypto/evp-w32.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/hcrypto/evp-w32.c b/third_party/heimdal/lib/hcrypto/evp-w32.c new file mode 100644 index 0000000..ac2c6a5 --- /dev/null +++ b/third_party/heimdal/lib/hcrypto/evp-w32.c @@ -0,0 +1,139 @@ +/* + * Copyright (c) 2015, Secure Endpoints Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * Windows fallback provider: decides whether to use hcrypto or + * wincng depending on whether bcrypt.dll is available (i.e. it + * is runtime compatible back to XP, but will use the native + * crypto APIs from Vista onwards). + */ + +#include <config.h> +#include <roken.h> + +#include <assert.h> + +#include <evp.h> +#include <evp-w32.h> +#include <evp-hcrypto.h> + +#include <evp-wincng.h> + +static LONG wincng_available = -1; + +static __inline int +wincng_check_availability(void) +{ + if (wincng_available == -1) { + char szBCryptDllPath[MAX_PATH]; + UINT cbBCryptDllPath; + + cbBCryptDllPath = GetSystemDirectory(szBCryptDllPath, + sizeof(szBCryptDllPath)); + if (cbBCryptDllPath > 0 && + cbBCryptDllPath < sizeof(szBCryptDllPath) && + strncat_s(szBCryptDllPath, + sizeof(szBCryptDllPath), "\\bcrypt.dll", 11) == 0) { + HANDLE hBCryptDll = LoadLibrary(szBCryptDllPath); + + InterlockedCompareExchangeRelease(&wincng_available, + !!hBCryptDll, -1); + if (hBCryptDll) + FreeLibrary(hBCryptDll); + } + } + + return wincng_available == 1; +} + +BOOL WINAPI +_hc_w32crypto_DllMain(HINSTANCE hinstDLL, + DWORD fdwReason, + LPVOID lpvReserved) +{ + if (fdwReason == DLL_PROCESS_DETACH) { + /* + * Don't bother cleaning up on process exit, only on + * FreeLibrary() (in which case lpvReserved will be NULL). + */ + if (lpvReserved == NULL) + _hc_wincng_cleanup(); + } + + return TRUE; +} + +#define EVP_W32CRYPTO_PROVIDER(type, name) \ + \ + const type *hc_EVP_w32crypto_ ##name (void) \ + { \ + if (wincng_check_availability()) \ + return hc_EVP_wincng_ ##name (); \ + else if (HCRYPTO_FALLBACK) \ + return hc_EVP_hcrypto_ ##name (); \ + else \ + return NULL; \ + } + +#define EVP_W32CRYPTO_PROVIDER_CNG_UNAVAILABLE(type, name) \ + \ + const type *hc_EVP_w32crypto_ ##name (void) \ + { \ + return hc_EVP_hcrypto_ ##name (); \ + } + +EVP_W32CRYPTO_PROVIDER(EVP_MD, md4) +EVP_W32CRYPTO_PROVIDER(EVP_MD, md5) +EVP_W32CRYPTO_PROVIDER(EVP_MD, sha1) +EVP_W32CRYPTO_PROVIDER(EVP_MD, sha256) +EVP_W32CRYPTO_PROVIDER(EVP_MD, sha384) +EVP_W32CRYPTO_PROVIDER(EVP_MD, sha512) + +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, rc2_cbc) +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, rc2_40_cbc) +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, rc2_64_cbc) + +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, rc4) +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, rc4_40) + +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, des_cbc) +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, des_ede3_cbc) + +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, aes_128_cbc) +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, aes_192_cbc) +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, aes_256_cbc) + +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, aes_128_cfb8) +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, aes_192_cfb8) +EVP_W32CRYPTO_PROVIDER(EVP_CIPHER, aes_256_cfb8) + +EVP_W32CRYPTO_PROVIDER_CNG_UNAVAILABLE(EVP_CIPHER, camellia_128_cbc) +EVP_W32CRYPTO_PROVIDER_CNG_UNAVAILABLE(EVP_CIPHER, camellia_192_cbc) +EVP_W32CRYPTO_PROVIDER_CNG_UNAVAILABLE(EVP_CIPHER, camellia_256_cbc) |