view libtomcrypt/src/misc/pk_get_oid.c @ 1630:9579377b5f8b

use strlcpy & strlcat (#74) * refactor checkpubkeyperms() with safe BSD functions fix gcc8 warnings ``` svr-authpubkey.c: In function 'checkpubkeyperms': svr-authpubkey.c:427:2: warning: 'strncat' specified bound 5 equals source length [-Wstringop-overflow=] strncat(filename, "/.ssh", 5); /* strlen("/.ssh") == 5 */ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ svr-authpubkey.c:433:2: warning: 'strncat' specified bound 16 equals source length [-Wstringop-overflow=] strncat(filename, "/authorized_keys", 16); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ``` see https://www.sudo.ws/todd/papers/strlcpy.html * restore strlcpy in xstrdup see original https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/xmalloc.c?rev=1.16
author François Perrad <francois.perrad@gadz.org>
date Wed, 20 Mar 2019 15:09:19 +0100
parents 6dba84798cd5
children
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis
 *
 * LibTomCrypt is a library that provides various cryptographic
 * algorithms in a highly modular and flexible manner.
 *
 * The library is free for all purposes without any express
 * guarantee it works.
 */
#include "tomcrypt.h"

#ifdef LTC_DER
static const oid_st rsa_oid = {
   { 1, 2, 840, 113549, 1, 1, 1  },
   7,
};

static const oid_st dsa_oid = {
   { 1, 2, 840, 10040, 4, 1  },
   6,
};

/*
   Returns the OID of the public key algorithm.
   @return CRYPT_OK if valid
*/
int pk_get_oid(int pk, oid_st *st)
{
   switch (pk) {
      case PKA_RSA:
         XMEMCPY(st, &rsa_oid, sizeof(*st));
         break;
      case PKA_DSA:
         XMEMCPY(st, &dsa_oid, sizeof(*st));
         break;
      default:
         return CRYPT_INVALID_ARG;
   }
   return CRYPT_OK;
}
#endif

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