/*
* hostkey_method_ssh_dss_initPEMFromMemory
*
* Load a Private Key from memory
*/
static int
hostkey_method_ssh_dss_initPEMFromMemory(LIBSSH2_SESSION * session,
const char *privkeyfiledata,
size_t privkeyfiledata_len,
unsigned const char *passphrase,
void **abstract)
{
libssh2_dsa_ctx *dsactx;
int ret;
if (*abstract) {
hostkey_method_ssh_dss_dtor(session, abstract);
*abstract = NULL;
}
ret = _libssh2_dsa_new_private_frommemory(&dsactx, session,
privkeyfiledata,
privkeyfiledata_len, passphrase);
if (ret) {
return -1;
}
*abstract = dsactx;
return 0;
}
/*
* hostkey_method_ssh_dss_initPEM
*
* Load a Private Key from a PEM file
*/
static int
hostkey_method_ssh_dss_initPEM(LIBSSH2_SESSION * session,
const char *privkeyfile,
unsigned const char *passphrase,
void **abstract)
{
libssh2_dsa_ctx *dsactx;
FILE *fp;
int ret;
if (*abstract) {
hostkey_method_ssh_dss_dtor(session, abstract);
*abstract = NULL;
}
fp = fopen(privkeyfile, "r");
if (!fp) {
return -1;
}
ret = _libssh2_dsa_new_private(&dsactx, session, fp, passphrase);
fclose(fp);
if (ret) {
return -1;
}
*abstract = dsactx;
return 0;
}
/*
* hostkey_method_ssh_dss_init
*
* Initialize the server hostkey working area with p/q/g/y set
*/
static int
hostkey_method_ssh_dss_init(LIBSSH2_SESSION * session,
const unsigned char *hostkey_data,
size_t hostkey_data_len,
void **abstract)
{
libssh2_dsa_ctx *dsactx;
const unsigned char *p, *q, *g, *y, *s;
unsigned long p_len, q_len, g_len, y_len, len;
int ret;
(void) hostkey_data_len;
if (*abstract) {
hostkey_method_ssh_dss_dtor(session, abstract);
*abstract = NULL;
}
s = hostkey_data;
len = _libssh2_ntohu32(s);
s += 4;
if (len != 7 || strncmp((char *) s, "ssh-dss", 7) != 0) {
return -1;
}
s += 7;
p_len = _libssh2_ntohu32(s);
s += 4;
p = s;
s += p_len;
q_len = _libssh2_ntohu32(s);
s += 4;
q = s;
s += q_len;
g_len = _libssh2_ntohu32(s);
s += 4;
g = s;
s += g_len;
y_len = _libssh2_ntohu32(s);
s += 4;
y = s;
/* s += y_len; */
ret = _libssh2_dsa_new(&dsactx, p, p_len, q, q_len,
g, g_len, y, y_len, NULL, 0);
if (ret) {
return -1;
}
*abstract = dsactx;
return 0;
}
