Mercurial > dropbear

annotate ecc.h @ 1715:3974f087d9c0

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Disallow leading lines before the ident for server (#102) Per RFC4253 4.2 clients must be able to process other lines of data before the version string, server behavior is not defined neither with MUST/SHOULD nor with MAY. If server process up to 50 lines too - it may cause too long hanging session with invalid/evil client that consume host resources and potentially may lead to DDoS on poor embedded boxes. Let's require first line from client to be version string and fail early if it's not - matches both RFC and real OpenSSH behavior.
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Mon, 15 Jun 2020 18:22:18 +0500
parents d68d61e7056a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1036
deed0571cacc DROPBEAR_ prefix for include guards to avoid collisions
Thorsten Horstmann <thorsten.horstmann@web.de>
parents: 857
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1 #ifndef DROPBEAR_DROPBEAR_ECC_H
deed0571cacc DROPBEAR_ prefix for include guards to avoid collisions
Thorsten Horstmann <thorsten.horstmann@web.de>
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2 #define DROPBEAR_DROPBEAR_ECC_H
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3
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4 #include "includes.h"
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5
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6 #include "buffer.h"
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7
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8 #if DROPBEAR_ECC
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9
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10 struct dropbear_ecc_curve {
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11 int ltc_size; /* to match the byte sizes in ltc_ecc_sets[] */
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12 const ltc_ecc_set_type *dp; /* curve domain parameters */
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parents: 767
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13 const struct ltc_hash_descriptor *hash_desc;
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Gaël PORTAY <gael.portay@gmail.com>
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14 const char *name;
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15 };
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16
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17 extern struct dropbear_ecc_curve ecc_curve_nistp256;
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Matt Johnston <matt@ucc.asn.au>
parents: 766
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18 extern struct dropbear_ecc_curve ecc_curve_nistp384;
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Matt Johnston <matt@ucc.asn.au>
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19 extern struct dropbear_ecc_curve ecc_curve_nistp521;
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20 extern struct dropbear_ecc_curve *dropbear_ecc_curves[];
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21
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Francois Perrad <francois.perrad@gadz.org>
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22 void dropbear_ecc_fill_dp(void);
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23 struct dropbear_ecc_curve* curve_for_dp(const ltc_ecc_set_type *dp);
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24
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25 /* "pubkey" refers to a point, but LTC uses ecc_key structure for both public
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26 and private keys */
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Matt Johnston <matt@ucc.asn.au>
parents: 762
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27 void buf_put_ecc_raw_pubkey_string(buffer *buf, ecc_key *key);
5503e05ab3a4 - Rename buf_put_ecc_pubkey_string() to buf_put_ecc_raw_pubkey_string()
Matt Johnston <matt@ucc.asn.au>
parents: 762
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28 ecc_key * buf_get_ecc_raw_pubkey(buffer *buf, const struct dropbear_ecc_curve *curve);
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29 int buf_get_ecc_privkey_string(buffer *buf, ecc_key *key);
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30
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Francois Perrad <francois.perrad@gadz.org>
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31 mp_int * dropbear_ecc_shared_secret(ecc_key *pub_key, const ecc_key *priv_key);
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32
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33 #endif
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34
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deed0571cacc DROPBEAR_ prefix for include guards to avoid collisions
Thorsten Horstmann <thorsten.horstmann@web.de>
parents: 857
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35 #endif /* DROPBEAR_DROPBEAR_ECC_H */