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-rw-r--r--thirdparty/crypto/poly1305.h46
1 files changed, 46 insertions, 0 deletions
diff --git a/thirdparty/crypto/poly1305.h b/thirdparty/crypto/poly1305.h
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+/*
+ * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef OSSL_CRYPTO_POLY1305_H
+# define OSSL_CRYPTO_POLY1305_H
+# pragma once
+
+#include <stddef.h>
+
+#define POLY1305_BLOCK_SIZE 16
+#define POLY1305_DIGEST_SIZE 16
+#define POLY1305_KEY_SIZE 32
+
+typedef struct poly1305_context POLY1305;
+
+typedef void (*poly1305_blocks_f) (void *ctx, const unsigned char *inp,
+ size_t len, unsigned int padbit);
+typedef void (*poly1305_emit_f) (void *ctx, unsigned char mac[16],
+ const unsigned int nonce[4]);
+
+struct poly1305_context {
+ double opaque[24]; /* large enough to hold internal state, declared
+ * 'double' to ensure at least 64-bit invariant
+ * alignment across all platforms and
+ * configurations */
+ unsigned int nonce[4];
+ unsigned char data[POLY1305_BLOCK_SIZE];
+ size_t num;
+ struct {
+ poly1305_blocks_f blocks;
+ poly1305_emit_f emit;
+ } func;
+};
+
+size_t Poly1305_ctx_size(void);
+void Poly1305_Init(POLY1305 *ctx, const unsigned char key[32]);
+void Poly1305_Update(POLY1305 *ctx, const unsigned char *inp, size_t len);
+void Poly1305_Final(POLY1305 *ctx, unsigned char mac[16]);
+
+#endif /* OSSL_CRYPTO_POLY1305_H */