version 1.45, 2001/11/29 22:08:48 |
version 1.46, 2001/12/18 10:06:24 |
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#include "log.h" |
#include "log.h" |
#include "servconf.h" |
#include "servconf.h" |
#include "auth.h" |
#include "auth.h" |
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#include "hostfile.h" |
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/* import */ |
/* import */ |
extern ServerOptions options; |
extern ServerOptions options; |
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FILE *f; |
FILE *f; |
u_long linenum = 0; |
u_long linenum = 0; |
struct stat st; |
struct stat st; |
RSA *pk; |
Key *key; |
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char *fp; |
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/* no user given */ |
/* no user given */ |
if (pw == NULL) |
if (pw == NULL) |
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/* Flag indicating whether authentication has succeeded. */ |
/* Flag indicating whether authentication has succeeded. */ |
authenticated = 0; |
authenticated = 0; |
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pk = RSA_new(); |
key = key_new(KEY_RSA1); |
pk->e = BN_new(); |
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pk->n = BN_new(); |
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/* |
/* |
* Go though the accepted keys, looking for the current key. If |
* Go though the accepted keys, looking for the current key. If |
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options = NULL; |
options = NULL; |
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/* Parse the key from the line. */ |
/* Parse the key from the line. */ |
if (!auth_rsa_read_key(&cp, &bits, pk->e, pk->n)) { |
if (hostfile_read_key(&cp, &bits, key) == 0) { |
debug("%.100s, line %lu: non ssh1 key syntax", |
debug("%.100s, line %lu: non ssh1 key syntax", |
file, linenum); |
file, linenum); |
continue; |
continue; |
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/* cp now points to the comment part. */ |
/* cp now points to the comment part. */ |
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/* Check if the we have found the desired key (identified by its modulus). */ |
/* Check if the we have found the desired key (identified by its modulus). */ |
if (BN_cmp(pk->n, client_n) != 0) |
if (BN_cmp(key->rsa->n, client_n) != 0) |
continue; |
continue; |
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/* check the real bits */ |
/* check the real bits */ |
if (bits != BN_num_bits(pk->n)) |
if (bits != BN_num_bits(key->rsa->n)) |
log("Warning: %s, line %lu: keysize mismatch: " |
log("Warning: %s, line %lu: keysize mismatch: " |
"actual %d vs. announced %d.", |
"actual %d vs. announced %d.", |
file, linenum, BN_num_bits(pk->n), bits); |
file, linenum, BN_num_bits(key->rsa->n), bits); |
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/* We have found the desired key. */ |
/* We have found the desired key. */ |
/* |
/* |
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continue; |
continue; |
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/* Perform the challenge-response dialog for this key. */ |
/* Perform the challenge-response dialog for this key. */ |
if (!auth_rsa_challenge_dialog(pk)) { |
if (!auth_rsa_challenge_dialog(key->rsa)) { |
/* Wrong response. */ |
/* Wrong response. */ |
verbose("Wrong response to RSA authentication challenge."); |
verbose("Wrong response to RSA authentication challenge."); |
packet_send_debug("Wrong response to RSA authentication challenge."); |
packet_send_debug("Wrong response to RSA authentication challenge."); |
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* otherwise continue searching. |
* otherwise continue searching. |
*/ |
*/ |
authenticated = 1; |
authenticated = 1; |
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fp = key_fingerprint(key, SSH_FP_MD5, SSH_FP_HEX); |
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verbose("Found matching %s key: %s", |
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key_type(key), fp); |
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xfree(fp); |
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break; |
break; |
} |
} |
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xfree(file); |
xfree(file); |
fclose(f); |
fclose(f); |
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RSA_free(pk); |
key_free(key); |
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if (authenticated) |
if (authenticated) |
packet_send_debug("RSA authentication accepted."); |
packet_send_debug("RSA authentication accepted."); |