Merge branch 'upstream-librhash' into add-SHA-3

* upstream-librhash:
  librhash 2016-11-06 (de79828d)

1 files changed, 54 insertions, 0 deletions

diff --git a/Utilities/cmlibrhash/librhash/sha3.h b/Utilities/cmlibrhash/librhash/sha3.h
new file mode 100644
index 0000000..2831997
--- /dev/null
+++ b/Utilities/cmlibrhash/librhash/sha3.h
@@ -0,0 +1,54 @@
+/* sha3.h */
+#ifndef RHASH_SHA3_H
+#define RHASH_SHA3_H
+#include "ustd.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define sha3_224_hash_size  28
+#define sha3_256_hash_size  32
+#define sha3_384_hash_size  48
+#define sha3_512_hash_size  64
+#define sha3_max_permutation_size 25
+#define sha3_max_rate_in_qwords 24
+
+/**
+ * SHA3 Algorithm context.
+ */
+typedef struct sha3_ctx
+{
+	/* 1600 bits algorithm hashing state */
+	uint64_t hash[sha3_max_permutation_size];
+	/* 1536-bit buffer for leftovers */
+	uint64_t message[sha3_max_rate_in_qwords];
+	/* count of bytes in the message[] buffer */
+	unsigned rest;
+	/* size of a message block processed at once */
+	unsigned block_size;
+} sha3_ctx;
+
+/* methods for calculating the hash function */
+
+void rhash_sha3_224_init(sha3_ctx *ctx);
+void rhash_sha3_256_init(sha3_ctx *ctx);
+void rhash_sha3_384_init(sha3_ctx *ctx);
+void rhash_sha3_512_init(sha3_ctx *ctx);
+void rhash_sha3_update(sha3_ctx *ctx, const unsigned char* msg, size_t size);
+void rhash_sha3_final(sha3_ctx *ctx, unsigned char* result);
+
+#ifdef USE_KECCAK
+#define rhash_keccak_224_init rhash_sha3_224_init
+#define rhash_keccak_256_init rhash_sha3_256_init
+#define rhash_keccak_384_init rhash_sha3_384_init
+#define rhash_keccak_512_init rhash_sha3_512_init
+#define rhash_keccak_update rhash_sha3_update
+void rhash_keccak_final(sha3_ctx *ctx, unsigned char* result);
+#endif
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif /* __cplusplus */
+
+#endif /* RHASH_SHA3_H */