1 files changed, 90 insertions, 0 deletions
diff --git a/lib/Utils.Cryptography/monocypher/blake2b.c b/lib/Utils.Cryptography/monocypher/blake2b.c
new file mode 100644
index 0000000..3d9a1d1
--- /dev/null
+++ b/lib/Utils.Cryptography/monocypher/blake2b.c
@@ -0,0 +1,90 @@
+/*
+* Copyright (c) 2023 Vaughn Nugent
+*
+* vnlib_monocypher is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published
+* by the Free Software Foundation, either version 2 of the License,
+* or (at your option) any later version.
+*
+* vnlib_monocypher is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with vnlib_monocypher. If not, see http://www.gnu.org/licenses/.
+*/
+
+#include <stdlib.h>
+#include <monocypher.h>
+#include "blake2b.h"
+
+VNLIB_EXPORT uint32_t VNLIB_CC Blake2GetContextSize(void)
+{
+	return sizeof(crypto_blake2b_ctx);
+}
+
+VNLIB_EXPORT int32_t VNLIB_CC Blake2Init(void* context, uint32_t hashlen, const void* key, uint32_t keylen)
+{
+	crypto_blake2b_ctx* ctx;
+	ctx = (crypto_blake2b_ctx*)context;
+
+	VALIDATE_PTR(ctx);
+
+	/* validate key pointer if set */
+	if (keylen > 0 && !key)
+	{
+		return ERR_KEY_PTR_INVALID;
+	}
+
+	if (keylen > MC_MAX_KEY_SIZE)
+	{
+		return ERR_KEY_LEN_INVALID;
+	}
+
+	/* validate hash length */
+	if (hashlen > MC_MAX_HASH_SIZE)
+	{
+		return ERR_HASH_LEN_INVALID;
+	}
+
+	/* initialize context, non-keyed just calls the keyed funciton */
+	crypto_blake2b_keyed_init(ctx, hashlen, key, keylen);
+
+	return BLAKE2B_RESULT_SUCCESS;
+}
+
+VNLIB_EXPORT int32_t VNLIB_CC Blake2Update(void* context, const void* data, uint32_t datalen)
+{
+	crypto_blake2b_ctx* ctx;
+	ctx = (crypto_blake2b_ctx*)context;
+	VALIDATE_PTR(ctx);
+	VALIDATE_PTR(data);
+
+	crypto_blake2b_update(ctx, data, datalen);
+	return BLAKE2B_RESULT_SUCCESS;
+}
+
+VNLIB_EXPORT int32_t VNLIB_CC Blake2Final(void* context, void* hash, uint32_t hashlen)
+{
+	crypto_blake2b_ctx* ctx;
+	ctx = (crypto_blake2b_ctx*)context;
+	VALIDATE_PTR(ctx);
+	VALIDATE_PTR(hash);
+
+	/* validate hash length */
+	if (hashlen != ctx->hash_size)
+	{
+		return ERR_HASH_LEN_INVALID;
+	}
+	crypto_blake2b_final(ctx, hash);
+	return BLAKE2B_RESULT_SUCCESS;
+}
+
+VNLIB_EXPORT int32_t VNLIB_CC Blake2GetHashSize(void* context)
+{
+	crypto_blake2b_ctx* ctx;
+	ctx = (crypto_blake2b_ctx*)context;
+	VALIDATE_PTR(ctx);
+	return (int32_t)ctx->hash_size;
+}