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os: Add CryptoAPI as a choice of SHA1 implementation

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Both Cygwin and MinGW can use Windows' native CryptoAPI for SHA1,
saving a dependency on libgcrypt or OpenSSL.  The necessary functions
are in ADVAPI32.DLL, which is among the default lib flags and is
already used in hw/xwin for accessing the registry.

Signed-off-by: Yaakov Selkowitz <yselkowitz@users.sourceforge.net>
Reviewed-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Reviewed-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Colin Harrison <colin.harrison@virgin.net>
Tested-by: Colin Harrison <colin.harrison@virgin.net>
This commit is contained in:
Yaakov Selkowitz 2012-04-26 01:49:06 -05:00
commit e6461db6dc
3 changed files with 59 additions and 1 deletions
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42
os/xsha1.c
View file

@ -74,6 +74,48 @@ x_sha1_final(void *ctx, unsigned char result[20])
return 1;
}
#elif defined(HAVE_SHA1_IN_CRYPTOAPI) /* Use CryptoAPI for SHA1 */
#define WIN32_LEAN_AND_MEAN
#include <X11/Xwindows.h>
#include <wincrypt.h>
static HCRYPTPROV hProv;
void *
x_sha1_init(void)
{
HCRYPTHASH *ctx = malloc(sizeof(*ctx));
if (!ctx)
return NULL;
CryptAcquireContext(&hProv, NULL, MS_DEF_PROV, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT);
CryptCreateHash(hProv, CALG_SHA1, 0, 0, ctx);
return ctx;
}
int
x_sha1_update(void *ctx, void *data, int size)
{
HCRYPTHASH *hHash = ctx;
CryptHashData(*hHash, data, size, 0);
return 1;
}
int
x_sha1_final(void *ctx, unsigned char result[20])
{
HCRYPTHASH *hHash = ctx;
DWORD len = 20;
CryptGetHashParam(*hHash, HP_HASHVAL, result, &len, 0);
CryptDestroyHash(*hHash);
CryptReleaseContext(hProv, 0);
free(ctx);
return 1;
}
#elif defined(HAVE_SHA1_IN_LIBGCRYPT) /* Use libgcrypt for SHA1 */
#include <gcrypt.h>