1 files changed, 45 insertions, 0 deletions
diff --git a/src/crypto/spx/wots.h b/src/crypto/spx/wots.h
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+++ b/src/crypto/spx/wots.h
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+/* Copyright (c) 2023, Google LLC
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_CRYPTO_SPX_WOTS_H
+#define OPENSSL_HEADER_CRYPTO_SPX_WOTS_H
+
+#include <openssl/base.h>
+
+#include "./params.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Algorithm 5: Generate a WOTS+ public key.
+void spx_wots_pk_gen(uint8_t *pk, const uint8_t sk_seed[SPX_N],
+                     const uint8_t pub_seed[SPX_N], uint8_t addr[32]);
+
+// Algorithm 6: Generate a WOTS+ signature on an n-byte message.
+void spx_wots_sign(uint8_t *sig, const uint8_t msg[SPX_N],
+                   const uint8_t sk_seed[SPX_N], const uint8_t pub_seed[SPX_N],
+                   uint8_t addr[32]);
+
+// Algorithm 7: Compute a WOTS+ public key from a message and its signature.
+void spx_wots_pk_from_sig(uint8_t *pk, const uint8_t *sig, const uint8_t *msg,
+                          const uint8_t pub_seed[SPX_N], uint8_t addr[32]);
+
+
+#if defined(__cplusplus)
+}  // extern C
+#endif
+
+#endif  // OPENSSL_HEADER_CRYPTO_SPX_WOTS_H