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Return RSA exponent from parsed SSL certificates, as a bignum

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This commit is contained in:
dmiller
2016-06-09 04:36:07 +00:00
parent 056c48544a
commit c8e8cf8f43
2 changed files with 21 additions and 0 deletions
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15
nse_ssl_cert.cc
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@@ -128,6 +128,7 @@
#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <openssl/bn.h>
#include <openssl/bio.h>
#include <openssl/pem.h>
#include <openssl/ssl.h>
@@ -146,6 +147,12 @@ struct cert_userdata {
int attributes_table;
};
/* from nse_openssl.cc */
typedef struct bignum_data {
BIGNUM * bn;
} bignum_data_t;
SSL *nse_nsock_get_ssl(lua_State *L);
/* This is a reference to a table that will be used as the metatable for
@@ -546,6 +553,14 @@ static int parse_ssl_cert(lua_State *L, X509 *cert)
if (pkey_type == EVP_PKEY_EC) {
lua_push_ecdhparams(L, pubkey);
}
else if (pkey_type == EVP_PKEY_RSA) {
RSA *rsa = EVP_PKEY_get1_RSA(pubkey);
bignum_data_t * data = (bignum_data_t *) lua_newuserdata( L, sizeof(bignum_data_t));
luaL_getmetatable( L, "BIGNUM" );
lua_setmetatable( L, -2 );
data->bn = rsa->e;
lua_setfield(L, -2, "exponent");
}
lua_pushstring(L, pkey_type_to_string(pkey_type));
lua_setfield(L, -2, "type");
lua_pushnumber(L, EVP_PKEY_bits(pubkey));