MSVC & SHA512 extension support

Author: karel-m

src/hashes/sha2/sha512_x86.c

@@ -345,7 +345,7 @@ static int LTC_SHA512_TARGET s_sha512_x86_compress(hash_state * md, const unsign
     state_b = ltc_mm256_blend_epi64(tmp_c, tmp_d, ltc_blend_epi64_k(0x1, 0x1, 0x0, 0x0));
     _mm256_storeu_si256(((__m256i*)(&md->sha512.state[0])), state_a);
     _mm256_storeu_si256(((__m256i*)(&md->sha512.state[4])), state_b);
-  return CRYPT_OK;
+    return CRYPT_OK;
 
 #undef ltc_permute_epi64_k
 #undef ltc_blend_epi32_k

src/headers/tomcrypt_cfg.h

@@ -342,9 +342,10 @@ typedef unsigned long ltc_mp_digit;
          #define LTC_SHA256_X86
       #endif
    #endif
-   /* the SHA512 extension intrinsics require GCC 14 resp. clang 17 (MSVC doesn't support them yet) */
+   /* the SHA512 extension intrinsics require GCC 14 resp. clang 17 */
    #if (defined __GNUC__ && !defined __clang__ && (__GNUC__ >= 14)) || \
-       (defined __clang__ && (__clang_major__ >= 17))
+       (defined __clang__ && (__clang_major__ >= 17)) || \
+       (defined _MSC_FULL_VER && (_MSC_FULL_VER) >=  194033813l) /* MSVC 2022 17.10 */
       #if !defined(LTC_NO_SHA384_X86)
          #define LTC_SHA384_X86
       #endif