Add support for SHA2 in CAPI ENGINE.

PR#2706 though patch is from PR#3366.

engines/e_capi.c

@@ -114,6 +114,26 @@
 #define CERT_SYSTEM_STORE_CURRENT_USER			0x00010000
 #endif 
 
+#ifndef	ALG_SID_SHA_256
+	#define ALG_SID_SHA_256                 12
+#endif
+#ifndef	ALG_SID_SHA_384
+	#define ALG_SID_SHA_384                 13
+#endif
+#ifndef	ALG_SID_SHA_512
+	#define ALG_SID_SHA_512                 14
+#endif
+
+#ifndef	CALG_SHA_256
+	#define CALG_SHA_256            (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SHA_256)
+#endif
+#ifndef	CALG_SHA_384
+	#define CALG_SHA_384            (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SHA_384)
+#endif
+#ifndef	CALG_SHA_512
+	#define CALG_SHA_512            (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SHA_512)
+#endif
+
 #include <openssl/engine.h>
 #include <openssl/pem.h>
 #include <openssl/x509v3.h>
@@ -821,6 +841,18 @@ int capi_rsa_sign(int dtype, const unsigned char *m, unsigned int m_len,
 /* Convert the signature type to a CryptoAPI algorithm ID */
 	switch(dtype)
 		{
+	case NID_sha256:
+		alg = CALG_SHA_256;
+		break;
+
+	case NID_sha384:
+		alg = CALG_SHA_384;
+		break;
+
+	case NID_sha512:
+		alg = CALG_SHA_512;
+		break;
+
 	case NID_sha1:
 		alg = CALG_SHA1;
 		break;