version 1.11, 2000/09/07 20:27:51 |
version 1.11.2.3, 2001/03/21 19:46:25 |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
*/ |
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#include "includes.h" |
#include "includes.h" |
#include "ssh.h" |
RCSID("$OpenBSD$"); |
#include <openssl/rsa.h> |
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#include <openssl/dsa.h> |
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#include <openssl/evp.h> |
#include <openssl/evp.h> |
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#include "xmalloc.h" |
#include "xmalloc.h" |
#include "key.h" |
#include "key.h" |
#include "dsa.h" |
#include "rsa.h" |
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#include "ssh-dss.h" |
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#include "ssh-rsa.h" |
#include "uuencode.h" |
#include "uuencode.h" |
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#include "buffer.h" |
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#include "bufaux.h" |
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#include "log.h" |
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RCSID("$OpenBSD$"); |
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#define SSH_DSS "ssh-dss" |
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Key * |
Key * |
key_new(int type) |
key_new(int type) |
{ |
{ |
|
|
k->dsa = NULL; |
k->dsa = NULL; |
k->rsa = NULL; |
k->rsa = NULL; |
switch (k->type) { |
switch (k->type) { |
|
case KEY_RSA1: |
case KEY_RSA: |
case KEY_RSA: |
rsa = RSA_new(); |
rsa = RSA_new(); |
rsa->n = BN_new(); |
rsa->n = BN_new(); |
|
|
dsa->pub_key = BN_new(); |
dsa->pub_key = BN_new(); |
k->dsa = dsa; |
k->dsa = dsa; |
break; |
break; |
case KEY_EMPTY: |
case KEY_UNSPEC: |
break; |
break; |
default: |
default: |
fatal("key_new: bad key type %d", k->type); |
fatal("key_new: bad key type %d", k->type); |
|
|
} |
} |
return k; |
return k; |
} |
} |
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Key * |
|
key_new_private(int type) |
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{ |
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Key *k = key_new(type); |
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switch (k->type) { |
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case KEY_RSA1: |
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case KEY_RSA: |
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k->rsa->d = BN_new(); |
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k->rsa->iqmp = BN_new(); |
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k->rsa->q = BN_new(); |
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k->rsa->p = BN_new(); |
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k->rsa->dmq1 = BN_new(); |
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k->rsa->dmp1 = BN_new(); |
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break; |
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case KEY_DSA: |
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k->dsa->priv_key = BN_new(); |
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break; |
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case KEY_UNSPEC: |
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break; |
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default: |
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break; |
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} |
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return k; |
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} |
void |
void |
key_free(Key *k) |
key_free(Key *k) |
{ |
{ |
switch (k->type) { |
switch (k->type) { |
|
case KEY_RSA1: |
case KEY_RSA: |
case KEY_RSA: |
if (k->rsa != NULL) |
if (k->rsa != NULL) |
RSA_free(k->rsa); |
RSA_free(k->rsa); |
|
|
DSA_free(k->dsa); |
DSA_free(k->dsa); |
k->dsa = NULL; |
k->dsa = NULL; |
break; |
break; |
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case KEY_UNSPEC: |
|
break; |
default: |
default: |
fatal("key_free: bad key type %d", k->type); |
fatal("key_free: bad key type %d", k->type); |
break; |
break; |
|
|
if (a == NULL || b == NULL || a->type != b->type) |
if (a == NULL || b == NULL || a->type != b->type) |
return 0; |
return 0; |
switch (a->type) { |
switch (a->type) { |
|
case KEY_RSA1: |
case KEY_RSA: |
case KEY_RSA: |
return a->rsa != NULL && b->rsa != NULL && |
return a->rsa != NULL && b->rsa != NULL && |
BN_cmp(a->rsa->e, b->rsa->e) == 0 && |
BN_cmp(a->rsa->e, b->rsa->e) == 0 && |
|
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return 0; |
return 0; |
} |
} |
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/* |
u_char* |
* Generate key fingerprint in ascii format. |
key_fingerprint_raw(Key *k, enum fp_type dgst_type, size_t *dgst_raw_length) |
* Based on ideas and code from Bjoern Groenvall <bg@sics.se> |
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*/ |
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char * |
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key_fingerprint(Key *k) |
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{ |
{ |
static char retval[(EVP_MAX_MD_SIZE+1)*3]; |
EVP_MD *md = NULL; |
unsigned char *blob = NULL; |
EVP_MD_CTX ctx; |
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u_char *blob = NULL; |
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u_char *retval = NULL; |
int len = 0; |
int len = 0; |
int nlen, elen; |
int nlen, elen; |
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*dgst_raw_length = 0; |
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switch (dgst_type) { |
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case SSH_FP_MD5: |
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md = EVP_md5(); |
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break; |
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case SSH_FP_SHA1: |
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md = EVP_sha1(); |
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break; |
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default: |
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fatal("key_fingerprint_raw: bad digest type %d", |
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dgst_type); |
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} |
switch (k->type) { |
switch (k->type) { |
case KEY_RSA: |
case KEY_RSA1: |
nlen = BN_num_bytes(k->rsa->n); |
nlen = BN_num_bytes(k->rsa->n); |
elen = BN_num_bytes(k->rsa->e); |
elen = BN_num_bytes(k->rsa->e); |
len = nlen + elen; |
len = nlen + elen; |
|
|
BN_bn2bin(k->rsa->e, blob + nlen); |
BN_bn2bin(k->rsa->e, blob + nlen); |
break; |
break; |
case KEY_DSA: |
case KEY_DSA: |
dsa_make_key_blob(k, &blob, &len); |
case KEY_RSA: |
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key_to_blob(k, &blob, &len); |
break; |
break; |
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case KEY_UNSPEC: |
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return retval; |
|
break; |
default: |
default: |
fatal("key_fingerprint: bad key type %d", k->type); |
fatal("key_fingerprint_raw: bad key type %d", k->type); |
break; |
break; |
} |
} |
retval[0] = '\0'; |
|
|
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if (blob != NULL) { |
if (blob != NULL) { |
int i; |
retval = xmalloc(EVP_MAX_MD_SIZE); |
unsigned char digest[EVP_MAX_MD_SIZE]; |
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EVP_MD *md = EVP_md5(); |
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EVP_MD_CTX ctx; |
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EVP_DigestInit(&ctx, md); |
EVP_DigestInit(&ctx, md); |
EVP_DigestUpdate(&ctx, blob, len); |
EVP_DigestUpdate(&ctx, blob, len); |
EVP_DigestFinal(&ctx, digest, NULL); |
EVP_DigestFinal(&ctx, retval, NULL); |
for(i = 0; i < md->md_size; i++) { |
*dgst_raw_length = md->md_size; |
char hex[4]; |
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snprintf(hex, sizeof(hex), "%02x:", digest[i]); |
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strlcat(retval, hex, sizeof(retval)); |
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} |
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retval[strlen(retval) - 1] = '\0'; |
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memset(blob, 0, len); |
memset(blob, 0, len); |
xfree(blob); |
xfree(blob); |
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} else { |
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fatal("key_fingerprint_raw: blob is null"); |
} |
} |
return retval; |
return retval; |
} |
} |
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char* |
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key_fingerprint_hex(u_char* dgst_raw, size_t dgst_raw_len) |
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{ |
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char *retval; |
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int i; |
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retval = xmalloc(dgst_raw_len * 3); |
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retval[0] = '\0'; |
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for(i = 0; i < dgst_raw_len; i++) { |
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char hex[4]; |
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snprintf(hex, sizeof(hex), "%02x:", dgst_raw[i]); |
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strlcat(retval, hex, dgst_raw_len * 3); |
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} |
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retval[(dgst_raw_len * 3) - 1] = '\0'; |
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return retval; |
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} |
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char* |
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key_fingerprint_bubblebabble(u_char* dgst_raw, size_t dgst_raw_len) |
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{ |
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char vowels[] = { 'a', 'e', 'i', 'o', 'u', 'y' }; |
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char consonants[] = { 'b', 'c', 'd', 'f', 'g', 'h', 'k', 'l', 'm', |
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'n', 'p', 'r', 's', 't', 'v', 'z', 'x' }; |
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u_int i, j = 0, rounds, seed = 1; |
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char *retval; |
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rounds = (dgst_raw_len / 2) + 1; |
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retval = xmalloc(sizeof(char) * (rounds*6)); |
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retval[j++] = 'x'; |
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for (i = 0; i < rounds; i++) { |
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u_int idx0, idx1, idx2, idx3, idx4; |
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if ((i + 1 < rounds) || (dgst_raw_len % 2 != 0)) { |
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idx0 = (((((u_int)(dgst_raw[2 * i])) >> 6) & 3) + |
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seed) % 6; |
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idx1 = (((u_int)(dgst_raw[2 * i])) >> 2) & 15; |
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idx2 = ((((u_int)(dgst_raw[2 * i])) & 3) + |
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(seed / 6)) % 6; |
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retval[j++] = vowels[idx0]; |
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retval[j++] = consonants[idx1]; |
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retval[j++] = vowels[idx2]; |
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if ((i + 1) < rounds) { |
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idx3 = (((u_int)(dgst_raw[(2 * i) + 1])) >> 4) & 15; |
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idx4 = (((u_int)(dgst_raw[(2 * i) + 1]))) & 15; |
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retval[j++] = consonants[idx3]; |
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retval[j++] = '-'; |
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retval[j++] = consonants[idx4]; |
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seed = ((seed * 5) + |
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((((u_int)(dgst_raw[2 * i])) * 7) + |
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((u_int)(dgst_raw[(2 * i) + 1])))) % 36; |
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} |
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} else { |
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idx0 = seed % 6; |
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idx1 = 16; |
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idx2 = seed / 6; |
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retval[j++] = vowels[idx0]; |
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retval[j++] = consonants[idx1]; |
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retval[j++] = vowels[idx2]; |
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} |
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} |
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retval[j++] = 'x'; |
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retval[j++] = '\0'; |
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return retval; |
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} |
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char* |
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key_fingerprint(Key *k, enum fp_type dgst_type, enum fp_rep dgst_rep) |
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{ |
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char *retval = NULL; |
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u_char *dgst_raw; |
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size_t dgst_raw_len; |
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dgst_raw = key_fingerprint_raw(k, dgst_type, &dgst_raw_len); |
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if (!dgst_raw) |
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fatal("key_fingerprint: null from key_fingerprint_raw()"); |
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switch(dgst_rep) { |
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case SSH_FP_HEX: |
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retval = key_fingerprint_hex(dgst_raw, dgst_raw_len); |
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break; |
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case SSH_FP_BUBBLEBABBLE: |
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retval = key_fingerprint_bubblebabble(dgst_raw, dgst_raw_len); |
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break; |
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default: |
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fatal("key_fingerprint_ex: bad digest representation %d", |
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dgst_rep); |
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break; |
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} |
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memset(dgst_raw, 0, dgst_raw_len); |
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xfree(dgst_raw); |
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return retval; |
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} |
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/* |
/* |
* Reads a multiple-precision integer in decimal from the buffer, and advances |
* Reads a multiple-precision integer in decimal from the buffer, and advances |
* the pointer. The integer must already be initialized. This function is |
* the pointer. The integer must already be initialized. This function is |
|
|
return 0; |
return 0; |
} |
} |
fprintf(f, " %s", buf); |
fprintf(f, " %s", buf); |
free(buf); |
xfree(buf); |
return 1; |
return 1; |
} |
} |
unsigned int |
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|
/* returns 1 ok, -1 error, 0 type mismatch */ |
|
int |
key_read(Key *ret, char **cpp) |
key_read(Key *ret, char **cpp) |
{ |
{ |
Key *k; |
Key *k; |
unsigned int bits = 0; |
int success = -1; |
char *cp; |
char *cp, *space; |
int len, n; |
int len, n, type; |
unsigned char *blob; |
u_int bits; |
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u_char *blob; |
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cp = *cpp; |
cp = *cpp; |
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switch(ret->type) { |
switch(ret->type) { |
case KEY_RSA: |
case KEY_RSA1: |
/* Get number of bits. */ |
/* Get number of bits. */ |
if (*cp < '0' || *cp > '9') |
if (*cp < '0' || *cp > '9') |
return 0; /* Bad bit count... */ |
return -1; /* Bad bit count... */ |
for (bits = 0; *cp >= '0' && *cp <= '9'; cp++) |
for (bits = 0; *cp >= '0' && *cp <= '9'; cp++) |
bits = 10 * bits + *cp - '0'; |
bits = 10 * bits + *cp - '0'; |
if (bits == 0) |
if (bits == 0) |
return 0; |
return -1; |
*cpp = cp; |
*cpp = cp; |
/* Get public exponent, public modulus. */ |
/* Get public exponent, public modulus. */ |
if (!read_bignum(cpp, ret->rsa->e)) |
if (!read_bignum(cpp, ret->rsa->e)) |
return 0; |
return -1; |
if (!read_bignum(cpp, ret->rsa->n)) |
if (!read_bignum(cpp, ret->rsa->n)) |
return 0; |
return -1; |
|
success = 1; |
break; |
break; |
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case KEY_UNSPEC: |
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case KEY_RSA: |
case KEY_DSA: |
case KEY_DSA: |
if (strncmp(cp, SSH_DSS " ", 7) != 0) |
space = strchr(cp, ' '); |
|
if (space == NULL) { |
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debug3("key_read: no space"); |
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return -1; |
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} |
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*space = '\0'; |
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type = key_type_from_name(cp); |
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*space = ' '; |
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if (type == KEY_UNSPEC) { |
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debug3("key_read: no key found"); |
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return -1; |
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} |
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cp = space+1; |
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if (*cp == '\0') { |
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debug3("key_read: short string"); |
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return -1; |
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} |
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if (ret->type == KEY_UNSPEC) { |
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ret->type = type; |
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} else if (ret->type != type) { |
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/* is a key, but different type */ |
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debug3("key_read: type mismatch"); |
return 0; |
return 0; |
cp += 7; |
} |
len = 2*strlen(cp); |
len = 2*strlen(cp); |
blob = xmalloc(len); |
blob = xmalloc(len); |
n = uudecode(cp, blob, len); |
n = uudecode(cp, blob, len); |
if (n < 0) { |
if (n < 0) { |
error("key_read: uudecode %s failed", cp); |
error("key_read: uudecode %s failed", cp); |
return 0; |
return -1; |
} |
} |
k = dsa_key_from_blob(blob, n); |
k = key_from_blob(blob, n); |
if (k == NULL) { |
if (k == NULL) { |
error("key_read: dsa_key_from_blob %s failed", cp); |
error("key_read: key_from_blob %s failed", cp); |
return 0; |
return -1; |
} |
} |
xfree(blob); |
xfree(blob); |
if (ret->dsa != NULL) |
if (k->type != type) { |
DSA_free(ret->dsa); |
error("key_read: type mismatch: encoding error"); |
ret->dsa = k->dsa; |
key_free(k); |
k->dsa = NULL; |
return -1; |
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} |
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/*XXXX*/ |
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if (ret->type == KEY_RSA) { |
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if (ret->rsa != NULL) |
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RSA_free(ret->rsa); |
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ret->rsa = k->rsa; |
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k->rsa = NULL; |
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success = 1; |
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#ifdef DEBUG_PK |
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RSA_print_fp(stderr, ret->rsa, 8); |
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#endif |
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} else { |
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if (ret->dsa != NULL) |
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DSA_free(ret->dsa); |
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ret->dsa = k->dsa; |
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k->dsa = NULL; |
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success = 1; |
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#ifdef DEBUG_PK |
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DSA_print_fp(stderr, ret->dsa, 8); |
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#endif |
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} |
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/*XXXX*/ |
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if (success != 1) |
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break; |
key_free(k); |
key_free(k); |
bits = BN_num_bits(ret->dsa->p); |
|
/* advance cp: skip whitespace and data */ |
/* advance cp: skip whitespace and data */ |
while (*cp == ' ' || *cp == '\t') |
while (*cp == ' ' || *cp == '\t') |
cp++; |
cp++; |
|
|
fatal("key_read: bad key type: %d", ret->type); |
fatal("key_read: bad key type: %d", ret->type); |
break; |
break; |
} |
} |
return bits; |
return success; |
} |
} |
int |
int |
key_write(Key *key, FILE *f) |
key_write(Key *key, FILE *f) |
{ |
{ |
int success = 0; |
int success = 0; |
unsigned int bits = 0; |
u_int bits = 0; |
|
|
if (key->type == KEY_RSA && key->rsa != NULL) { |
if (key->type == KEY_RSA1 && key->rsa != NULL) { |
/* size of modulus 'n' */ |
/* size of modulus 'n' */ |
bits = BN_num_bits(key->rsa->n); |
bits = BN_num_bits(key->rsa->n); |
fprintf(f, "%u", bits); |
fprintf(f, "%u", bits); |
|
|
} else { |
} else { |
error("key_write: failed for RSA key"); |
error("key_write: failed for RSA key"); |
} |
} |
} else if (key->type == KEY_DSA && key->dsa != NULL) { |
} else if ((key->type == KEY_DSA && key->dsa != NULL) || |
|
(key->type == KEY_RSA && key->rsa != NULL)) { |
int len, n; |
int len, n; |
unsigned char *blob, *uu; |
u_char *blob, *uu; |
dsa_make_key_blob(key, &blob, &len); |
key_to_blob(key, &blob, &len); |
uu = xmalloc(2*len); |
uu = xmalloc(2*len); |
n = uuencode(blob, len, uu, 2*len); |
n = uuencode(blob, len, uu, 2*len); |
if (n > 0) { |
if (n > 0) { |
fprintf(f, "%s %s", SSH_DSS, uu); |
fprintf(f, "%s %s", key_ssh_name(key), uu); |
success = 1; |
success = 1; |
} |
} |
xfree(blob); |
xfree(blob); |
|
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key_type(Key *k) |
key_type(Key *k) |
{ |
{ |
switch (k->type) { |
switch (k->type) { |
|
case KEY_RSA1: |
|
return "RSA1"; |
|
break; |
case KEY_RSA: |
case KEY_RSA: |
return "RSA"; |
return "RSA"; |
break; |
break; |
|
|
} |
} |
return "unknown"; |
return "unknown"; |
} |
} |
unsigned int |
char * |
|
key_ssh_name(Key *k) |
|
{ |
|
switch (k->type) { |
|
case KEY_RSA: |
|
return "ssh-rsa"; |
|
break; |
|
case KEY_DSA: |
|
return "ssh-dss"; |
|
break; |
|
} |
|
return "ssh-unknown"; |
|
} |
|
u_int |
key_size(Key *k){ |
key_size(Key *k){ |
switch (k->type) { |
switch (k->type) { |
|
case KEY_RSA1: |
case KEY_RSA: |
case KEY_RSA: |
return BN_num_bits(k->rsa->n); |
return BN_num_bits(k->rsa->n); |
break; |
break; |
|
|
break; |
break; |
} |
} |
return 0; |
return 0; |
|
} |
|
|
|
RSA * |
|
rsa_generate_private_key(u_int bits) |
|
{ |
|
RSA *private; |
|
private = RSA_generate_key(bits, 35, NULL, NULL); |
|
if (private == NULL) |
|
fatal("rsa_generate_private_key: key generation failed."); |
|
return private; |
|
} |
|
|
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DSA* |
|
dsa_generate_private_key(u_int bits) |
|
{ |
|
DSA *private = DSA_generate_parameters(bits, NULL, 0, NULL, NULL, NULL, NULL); |
|
if (private == NULL) |
|
fatal("dsa_generate_private_key: DSA_generate_parameters failed"); |
|
if (!DSA_generate_key(private)) |
|
fatal("dsa_generate_private_key: DSA_generate_key failed."); |
|
if (private == NULL) |
|
fatal("dsa_generate_private_key: NULL."); |
|
return private; |
|
} |
|
|
|
Key * |
|
key_generate(int type, u_int bits) |
|
{ |
|
Key *k = key_new(KEY_UNSPEC); |
|
switch (type) { |
|
case KEY_DSA: |
|
k->dsa = dsa_generate_private_key(bits); |
|
break; |
|
case KEY_RSA: |
|
case KEY_RSA1: |
|
k->rsa = rsa_generate_private_key(bits); |
|
break; |
|
default: |
|
fatal("key_generate: unknown type %d", type); |
|
} |
|
k->type = type; |
|
return k; |
|
} |
|
|
|
Key * |
|
key_from_private(Key *k) |
|
{ |
|
Key *n = NULL; |
|
switch (k->type) { |
|
case KEY_DSA: |
|
n = key_new(k->type); |
|
BN_copy(n->dsa->p, k->dsa->p); |
|
BN_copy(n->dsa->q, k->dsa->q); |
|
BN_copy(n->dsa->g, k->dsa->g); |
|
BN_copy(n->dsa->pub_key, k->dsa->pub_key); |
|
break; |
|
case KEY_RSA: |
|
case KEY_RSA1: |
|
n = key_new(k->type); |
|
BN_copy(n->rsa->n, k->rsa->n); |
|
BN_copy(n->rsa->e, k->rsa->e); |
|
break; |
|
default: |
|
fatal("key_from_private: unknown type %d", k->type); |
|
break; |
|
} |
|
return n; |
|
} |
|
|
|
int |
|
key_type_from_name(char *name) |
|
{ |
|
if (strcmp(name, "rsa1") == 0){ |
|
return KEY_RSA1; |
|
} else if (strcmp(name, "rsa") == 0){ |
|
return KEY_RSA; |
|
} else if (strcmp(name, "dsa") == 0){ |
|
return KEY_DSA; |
|
} else if (strcmp(name, "ssh-rsa") == 0){ |
|
return KEY_RSA; |
|
} else if (strcmp(name, "ssh-dss") == 0){ |
|
return KEY_DSA; |
|
} |
|
debug2("key_type_from_name: unknown key type '%s'", name); |
|
return KEY_UNSPEC; |
|
} |
|
|
|
Key * |
|
key_from_blob(char *blob, int blen) |
|
{ |
|
Buffer b; |
|
char *ktype; |
|
int rlen, type; |
|
Key *key = NULL; |
|
|
|
#ifdef DEBUG_PK |
|
dump_base64(stderr, blob, blen); |
|
#endif |
|
buffer_init(&b); |
|
buffer_append(&b, blob, blen); |
|
ktype = buffer_get_string(&b, NULL); |
|
type = key_type_from_name(ktype); |
|
|
|
switch(type){ |
|
case KEY_RSA: |
|
key = key_new(type); |
|
buffer_get_bignum2(&b, key->rsa->e); |
|
buffer_get_bignum2(&b, key->rsa->n); |
|
#ifdef DEBUG_PK |
|
RSA_print_fp(stderr, key->rsa, 8); |
|
#endif |
|
break; |
|
case KEY_DSA: |
|
key = key_new(type); |
|
buffer_get_bignum2(&b, key->dsa->p); |
|
buffer_get_bignum2(&b, key->dsa->q); |
|
buffer_get_bignum2(&b, key->dsa->g); |
|
buffer_get_bignum2(&b, key->dsa->pub_key); |
|
#ifdef DEBUG_PK |
|
DSA_print_fp(stderr, key->dsa, 8); |
|
#endif |
|
break; |
|
case KEY_UNSPEC: |
|
key = key_new(type); |
|
break; |
|
default: |
|
error("key_from_blob: cannot handle type %s", ktype); |
|
break; |
|
} |
|
rlen = buffer_len(&b); |
|
if (key != NULL && rlen != 0) |
|
error("key_from_blob: remaining bytes in key blob %d", rlen); |
|
xfree(ktype); |
|
buffer_free(&b); |
|
return key; |
|
} |
|
|
|
int |
|
key_to_blob(Key *key, u_char **blobp, u_int *lenp) |
|
{ |
|
Buffer b; |
|
int len; |
|
u_char *buf; |
|
|
|
if (key == NULL) { |
|
error("key_to_blob: key == NULL"); |
|
return 0; |
|
} |
|
buffer_init(&b); |
|
switch(key->type){ |
|
case KEY_DSA: |
|
buffer_put_cstring(&b, key_ssh_name(key)); |
|
buffer_put_bignum2(&b, key->dsa->p); |
|
buffer_put_bignum2(&b, key->dsa->q); |
|
buffer_put_bignum2(&b, key->dsa->g); |
|
buffer_put_bignum2(&b, key->dsa->pub_key); |
|
break; |
|
case KEY_RSA: |
|
buffer_put_cstring(&b, key_ssh_name(key)); |
|
buffer_put_bignum2(&b, key->rsa->e); |
|
buffer_put_bignum2(&b, key->rsa->n); |
|
break; |
|
default: |
|
error("key_to_blob: illegal key type %d", key->type); |
|
break; |
|
} |
|
len = buffer_len(&b); |
|
buf = xmalloc(len); |
|
memcpy(buf, buffer_ptr(&b), len); |
|
memset(buffer_ptr(&b), 0, len); |
|
buffer_free(&b); |
|
if (lenp != NULL) |
|
*lenp = len; |
|
if (blobp != NULL) |
|
*blobp = buf; |
|
return len; |
|
} |
|
|
|
int |
|
key_sign( |
|
Key *key, |
|
u_char **sigp, int *lenp, |
|
u_char *data, int datalen) |
|
{ |
|
switch(key->type){ |
|
case KEY_DSA: |
|
return ssh_dss_sign(key, sigp, lenp, data, datalen); |
|
break; |
|
case KEY_RSA: |
|
return ssh_rsa_sign(key, sigp, lenp, data, datalen); |
|
break; |
|
default: |
|
error("key_sign: illegal key type %d", key->type); |
|
return -1; |
|
break; |
|
} |
|
} |
|
|
|
int |
|
key_verify( |
|
Key *key, |
|
u_char *signature, int signaturelen, |
|
u_char *data, int datalen) |
|
{ |
|
switch(key->type){ |
|
case KEY_DSA: |
|
return ssh_dss_verify(key, signature, signaturelen, data, datalen); |
|
break; |
|
case KEY_RSA: |
|
return ssh_rsa_verify(key, signature, signaturelen, data, datalen); |
|
break; |
|
default: |
|
error("key_verify: illegal key type %d", key->type); |
|
return -1; |
|
break; |
|
} |
} |
} |