1 files changed, 130 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/external/nrf_oberon/include/occ_ed25519.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/nrf_oberon/include/occ_ed25519.h
new file mode 100644
index 0000000..68ad490
--- /dev/null
+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/nrf_oberon/include/occ_ed25519.h
@@ -0,0 +1,130 @@
+/**
+ * Copyright (c) 2016 - 2018, Nordic Semiconductor ASA
+ * 
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, must reproduce the above copyright notice, this list of
+ *    conditions and the following disclaimer in the documentation and/or other
+ *    materials provided with the distribution.
+ * 
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ * 
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ * 
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+
+/**@file
+ * Ed25519 is a specific implementation of EdDSA, a digital signature scheme.
+ * EdDSA is based on Twisted Edwards curves and is designed to be faster than
+ * existing digital signature schemes without sacrificing security. It was
+ * developed by Daniel J. Bernstein, et al. Ed25519 is intended to provide
+ * attack resistance comparable to quality 128-bit symmetric ciphers.
+ * 
+ * @see [Ed25519: high-speed high-security signatures](https://ed25519.cr.yp.to)
+ */
+
+#ifndef OCC_ED25519_H
+#define OCC_ED25519_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+
+/**
+ * Length of a public key.
+ */
+#define occ_ed25519_PUBLIC_KEY_BYTES (32)
+
+/**
+ * Length of a secret key.
+ */
+#define occ_ed25519_SECRET_KEY_BYTES (32)
+
+/**
+ * Length of a signature.
+ */
+#define occ_ed25519_BYTES (64)
+
+
+/**
+ * Ed25519 signature key pair generation.
+ *
+ * Given a secret key `sk`, the corresponding public key is computed and put
+ * into `pk`. The key pair can then be used to sign and verify message signatures.
+ *
+ * **Example**
+ * @include occ_ed25519_public_key.c
+ *
+ * @param[out] pk Generated public key.
+ * @param      sk Secret key. Must be prefilled with random data.
+ */
+void occ_ed25519_public_key(uint8_t pk[occ_ed25519_PUBLIC_KEY_BYTES],
+                            const uint8_t sk[occ_ed25519_SECRET_KEY_BYTES]);
+
+/**
+ * Ed25519 signature generate.
+ *
+ * The message @p m is signed using the secret key @p sk and the corresponding
+ * public key @p pk. The signature is put into @p sig.
+ *
+ * **Example**
+ * @include occ_ed25519_sign.c
+ *
+ * @param[out] sig   Generated signature.
+ * @param      m     Input message.
+ * @param      m_len Length of @p m.
+ * @param      sk    Secret key.
+ * @param      pk    Public key.
+ */
+void occ_ed25519_sign(uint8_t sig[occ_ed25519_BYTES],
+                      const uint8_t *m, size_t m_len,
+                      const uint8_t sk[occ_ed25519_SECRET_KEY_BYTES],
+                      const uint8_t pk[occ_ed25519_PUBLIC_KEY_BYTES]);
+
+/**
+ * Ed25519 signature verification.
+ * 
+ * The signature @p sig of the input message @p m is verified using the signer's
+ * public key @p pk.
+ *
+ * **Example**
+ * @include occ_ed25519_verify.c
+ * 
+ * @param sig   Input signature.
+ * @param m     Input message.
+ * @param m_len Length of @p m.
+ * @param pk    Signer's public key.
+ *
+ * @returns 0 If signature OK.
+ * @returns -1 Otherwise.
+ */
+int occ_ed25519_verify(const uint8_t sig[occ_ed25519_BYTES],
+                       const uint8_t *m, size_t m_len,
+                       const uint8_t pk[occ_ed25519_PUBLIC_KEY_BYTES]);
+
+#endif