[+] Public key and digital signature format and operations

dap_chain_pkey.c

@@ -26,6 +26,7 @@
 #include "dap_chain_pkey.h"
 
 #define LOG_TAG "chain_key"
+dap_chain_pkey_t m_dap_chain_pkey_null={0}; // For sizeof nothing more
 
 
 /**

dap_chain_pkey.h

@@ -49,4 +49,12 @@ typedef struct dap_chain_pkey{
     uint8_t pkey[]; /// @param pkey @brief raw pkey dat
 } DAP_ALIGN_PACKED dap_chain_pkey_t;
 
+extern dap_chain_pkey_t m_dap_chain_pkey_null; // For sizeof nothing more
+
 dap_chain_pkey_t *dap_chain_pkey_from_enc_key(dap_enc_key_t *a_key);
+inline size_t dap_chain_pkey_from_enc_key_output_calc(dap_enc_key_t *a_key)
+{
+    return sizeof(m_dap_chain_pkey_null.header)+ a_key->pub_key_data_size;
+}
+
+int dap_chain_pkey_from_enc_key_output(dap_enc_key_t *a_key, void * a_output);

dap_chain_sign.c

+/*
+ * Authors:
+ * Dmitriy A. Gearasimov <gerasimov.dmitriy@demlabs.net>
+ * DeM Labs Inc.   https://demlabs.net    https:/gitlab.com/demlabs
+ * Kelvin Project https://github.com/kelvinblockchain
+ * Copyright  (c) 2017-2018
+ * All rights reserved.
+
+ This file is part of DAP (Deus Applications Prototypes) the open source project
+
+    DAP (Deus Applicaions Prototypes) 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 3 of the License, or
+    (at your option) any later version.
+
+    DAP 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 any DAP based project.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "dap_common.h"
+#include "dap_chain_sign.h"
+#include "dap_enc_bliss.h"
+#include "dap_enc_tesla.h"
+#include "dap_enc_picnic.h"
+
+#define LOG_TAG "dap_chain_sign"
+
+dap_chain_sign_t * s_sign_null = NULL;
+bliss_signature_t s_sign_bliss_null = {0};
+size_t dap_chain_sign_cals_size(dap_enc_key_t * a_key)
+{
+    size_t l_sign_size = 0;
+    switch (a_key->type){
+        case DAP_ENC_KEY_TYPE_SIG_BLISS: l_sign_size = sizeof(s_sign_bliss_null); break;
+        case DAP_ENC_KEY_TYPE_SIG_PICNIC: dap_enc_picnic_calc_signature_size(a_key); break;
+        default : return 0;
+
+    }
+    return sizeof(s_sign_null->header)+ a_key->pub_key_data_size + l_sign_size;
+}
+
+int dap_chain_sign_create(dap_enc_key_t *a_key, const void * a_data, const size_t a_data_size, void * a_output )
+{
+    return 0;
+}

dap_chain_sign.h

@@ -27,13 +27,15 @@
 #include <stdint.h>
 #include "dap_common.h"
 #include "dap_enc_ca.h"
+#include "dap_enc_key.h"
 
 typedef union dap_chain_sign_type{
     enum {
-        SIG_TYPE_PICNIC = 0x0000,
+        SIG_TYPE_BLISS = 0x0000,
         SIG_TYPE_DEFO = 0x0001, /// @brief key image for anonymous transaction
+        SIG_TYPE_TESLA = 0x0002, /// @brief
+        SIG_TYPE_PICNIC = 0x0101, /// @brief
         SIG_TYPE_MULTI = 0xffff ///  @brief Has inside subset of different signatures and sign composed with all of them
-
     } type: 16;
     uint16_t raw;
 } dap_chain_sign_type_t;
@@ -51,4 +53,5 @@ typedef struct dap_chain_sign{
     uint8_t pkey_n_sign[]; /// @param sig @brief raw signature data
 } DAP_ALIGN_PACKED dap_chain_sign_t;
 
-//int dap_chain_sign_data(dap_chain_si, )
+size_t dap_chain_sign_cals_size(dap_enc_key_t * a_key);
+int dap_chain_sign_create(dap_enc_key_t *a_key, const void * a_data, const size_t a_data_size, void * a_output );