Add SHA-224, SHA-256, SHA-384, and SHA-512 support to QCryptographicHash

This adds Sha224, Sha256, Sha384, and Sha512 enum values to
QCryptographicHash::Algorithm. The implementation comes from RFC 6234,
http://tools.ietf.org/html/rfc6234, which is added to
src/3rdparty/rfc6234. Only the headers and SHA-2 code is included in
src/3rdparty/rfc6234 (the SHA1, HMAC, and HKDF code is not included).

Change-Id: I85139fd118291f15efc22899a5ddd1cc83810cfb
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/src/3rdparty/rfc6234/sha-private.h b/src/3rdparty/rfc6234/sha-private.h
new file mode 100644
index 0000000000..6e9c4520fb
--- /dev/null
+++ b/src/3rdparty/rfc6234/sha-private.h
@@ -0,0 +1,28 @@
+/************************ sha-private.h ************************/
+/***************** See RFC 6234 for details. *******************/
+#ifndef _SHA_PRIVATE__H
+#define _SHA_PRIVATE__H
+/*
+ * These definitions are defined in FIPS 180-3, section 4.1.
+ * Ch() and Maj() are defined identically in sections 4.1.1,
+ * 4.1.2, and 4.1.3.
+ *
+ * The definitions used in FIPS 180-3 are as follows:
+ */
+
+#ifndef USE_MODIFIED_MACROS
+#define SHA_Ch(x,y,z)        (((x) & (y)) ^ ((~(x)) & (z)))
+#define SHA_Maj(x,y,z)       (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+#else /* USE_MODIFIED_MACROS */
+/*
+ * The following definitions are equivalent and potentially faster.
+ */
+
+#define SHA_Ch(x, y, z)      (((x) & ((y) ^ (z))) ^ (z))
+#define SHA_Maj(x, y, z)     (((x) & ((y) | (z))) | ((y) & (z)))
+
+#endif /* USE_MODIFIED_MACROS */
+
+#define SHA_Parity(x, y, z)  ((x) ^ (y) ^ (z))
+
+#endif /* _SHA_PRIVATE__H */