version 1.5, 1999/09/29 21:14:16 |
version 1.12, 1999/11/23 22:25:55 |
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#include "rsa.h" |
#include "rsa.h" |
#include "ssh.h" |
#include "ssh.h" |
#include "xmalloc.h" |
#include "xmalloc.h" |
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#include "fingerprint.h" |
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/* Generated private key. */ |
/* Generated private key. */ |
RSA *private_key; |
RSA *private_key; |
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int quiet = 0; |
int quiet = 0; |
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/* This is set to the identity file name if given on the command line. */ |
/* Flag indicating that we just want to see the key fingerprint */ |
char *identity_file = NULL; |
int print_fingerprint = 0; |
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/* The identity file name, given on the command line or entered by the user. */ |
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char identity_file[1024]; |
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int have_identity = 0; |
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/* This is set to the passphrase if given on the command line. */ |
/* This is set to the passphrase if given on the command line. */ |
char *identity_passphrase = NULL; |
char *identity_passphrase = NULL; |
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/* This is set to the new comment if given on the command line. */ |
/* This is set to the new comment if given on the command line. */ |
char *identity_comment = NULL; |
char *identity_comment = NULL; |
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/* argv0 */ |
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extern char *__progname; |
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void |
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ask_filename(struct passwd *pw, const char *prompt) |
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{ |
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char buf[1024]; |
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snprintf(identity_file, sizeof(identity_file), "%s/%s", |
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pw->pw_dir, SSH_CLIENT_IDENTITY); |
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printf("%s (%s): ", prompt, identity_file); |
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fflush(stdout); |
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if (fgets(buf, sizeof(buf), stdin) == NULL) |
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exit(1); |
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if (strchr(buf, '\n')) |
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*strchr(buf, '\n') = 0; |
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if (strcmp(buf, "") != 0) |
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strlcpy(identity_file, buf, sizeof(identity_file)); |
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have_identity = 1; |
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} |
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void |
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do_fingerprint(struct passwd *pw) |
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{ |
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char *comment; |
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RSA *public_key; |
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struct stat st; |
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if (!have_identity) |
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ask_filename(pw, "Enter file in which the key is"); |
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if (stat(identity_file, &st) < 0) { |
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perror(identity_file); |
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exit(1); |
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} |
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public_key = RSA_new(); |
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if (!load_public_key(identity_file, public_key, &comment)) { |
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char *cp, line[1024]; |
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BIGNUM *e, *n; |
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int dummy, invalid = 0; |
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FILE *f = fopen(identity_file, "r"); |
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n = BN_new(); |
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e = BN_new(); |
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if (f && fgets(line, sizeof(line), f)) { |
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cp = line; |
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line[strlen(line) - 1] = '\0'; |
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if (auth_rsa_read_key(&cp, &dummy, e, n)) { |
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public_key->e = e; |
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public_key->n = n; |
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comment = xstrdup(cp ? cp : "no comment"); |
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} else { |
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invalid = 1; |
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} |
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} else { |
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invalid = 1; |
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} |
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if (invalid) { |
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printf("%s is not a valid key file.\n", identity_file); |
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BN_free(e); |
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BN_free(n); |
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exit(1); |
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} |
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} |
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printf("%d %s %s\n", BN_num_bits(public_key->n), |
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fingerprint(public_key->e, public_key->n), |
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comment); |
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RSA_free(public_key); |
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exit(0); |
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} |
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/* Perform changing a passphrase. The argument is the passwd structure |
/* Perform changing a passphrase. The argument is the passwd structure |
for the current user. */ |
for the current user. */ |
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void |
void |
do_change_passphrase(struct passwd *pw) |
do_change_passphrase(struct passwd *pw) |
{ |
{ |
char buf[1024], *comment; |
char *comment; |
char *old_passphrase, *passphrase1, *passphrase2; |
char *old_passphrase, *passphrase1, *passphrase2; |
struct stat st; |
struct stat st; |
RSA *private_key; |
RSA *private_key; |
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/* Read key file name. */ |
if (!have_identity) |
if (identity_file != NULL) { |
ask_filename(pw, "Enter file in which the key is"); |
strncpy(buf, identity_file, sizeof(buf)); |
/* Check if the file exists. */ |
buf[sizeof(buf) - 1] = '\0'; |
if (stat(identity_file, &st) < 0) { |
} else { |
perror(identity_file); |
printf("Enter file in which the key is ($HOME/%s): ", SSH_CLIENT_IDENTITY); |
exit(1); |
fflush(stdout); |
} |
if (fgets(buf, sizeof(buf), stdin) == NULL) |
/* Try to load the public key from the file the verify that it is |
exit(1); |
readable and of the proper format. */ |
if (strchr(buf, '\n')) |
public_key = RSA_new(); |
*strchr(buf, '\n') = 0; |
if (!load_public_key(identity_file, public_key, NULL)) { |
if (strcmp(buf, "") == 0) |
printf("%s is not a valid key file.\n", identity_file); |
snprintf(buf, sizeof buf, "%s/%s", pw->pw_dir, SSH_CLIENT_IDENTITY); |
exit(1); |
} |
} |
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/* Clear the public key since we are just about to load the whole file. */ |
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RSA_free(public_key); |
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/* Check if the file exists. */ |
/* Try to load the file with empty passphrase. */ |
if (stat(buf, &st) < 0) |
private_key = RSA_new(); |
{ |
if (!load_private_key(identity_file, "", private_key, &comment)) { |
perror(buf); |
/* Read passphrase from the user. */ |
exit(1); |
if (identity_passphrase) |
} |
old_passphrase = xstrdup(identity_passphrase); |
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else |
/* Try to load the public key from the file the verify that it is |
old_passphrase = read_passphrase("Enter old passphrase: ", 1); |
readable and of the proper format. */ |
/* Try to load using the passphrase. */ |
public_key = RSA_new(); |
if (!load_private_key(identity_file, old_passphrase, private_key, &comment)) { |
if (!load_public_key(buf, public_key, NULL)) |
memset(old_passphrase, 0, strlen(old_passphrase)); |
{ |
xfree(old_passphrase); |
printf("%s is not a valid key file.\n", buf); |
printf("Bad passphrase.\n"); |
exit(1); |
exit(1); |
} |
} |
/* Clear the public key since we are just about to load the whole file. */ |
/* Destroy the passphrase. */ |
RSA_free(public_key); |
memset(old_passphrase, 0, strlen(old_passphrase)); |
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xfree(old_passphrase); |
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} |
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printf("Key has comment '%s'\n", comment); |
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/* Try to load the file with empty passphrase. */ |
/* Ask the new passphrase (twice). */ |
private_key = RSA_new(); |
if (identity_new_passphrase) { |
if (!load_private_key(buf, "", private_key, &comment)) { |
passphrase1 = xstrdup(identity_new_passphrase); |
/* Read passphrase from the user. */ |
passphrase2 = NULL; |
if (identity_passphrase) |
} else { |
old_passphrase = xstrdup(identity_passphrase); |
passphrase1 = |
else |
read_passphrase("Enter new passphrase (empty for no passphrase): ", 1); |
old_passphrase = read_passphrase("Enter old passphrase: ", 1); |
passphrase2 = read_passphrase("Enter same passphrase again: ", 1); |
/* Try to load using the passphrase. */ |
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if (!load_private_key(buf, old_passphrase, private_key, &comment)) |
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{ |
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memset(old_passphrase, 0, strlen(old_passphrase)); |
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xfree(old_passphrase); |
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printf("Bad passphrase.\n"); |
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exit(1); |
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} |
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/* Destroy the passphrase. */ |
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memset(old_passphrase, 0, strlen(old_passphrase)); |
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xfree(old_passphrase); |
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} |
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printf("Key has comment '%s'\n", comment); |
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/* Ask the new passphrase (twice). */ |
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if (identity_new_passphrase) |
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{ |
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passphrase1 = xstrdup(identity_new_passphrase); |
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passphrase2 = NULL; |
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} |
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else |
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{ |
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passphrase1 = |
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read_passphrase("Enter new passphrase (empty for no passphrase): ", 1); |
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passphrase2 = read_passphrase("Enter same passphrase again: ", 1); |
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/* Verify that they are the same. */ |
/* Verify that they are the same. */ |
if (strcmp(passphrase1, passphrase2) != 0) |
if (strcmp(passphrase1, passphrase2) != 0) { |
{ |
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase2, 0, strlen(passphrase2)); |
memset(passphrase2, 0, strlen(passphrase2)); |
xfree(passphrase1); |
xfree(passphrase1); |
xfree(passphrase2); |
xfree(passphrase2); |
printf("Pass phrases do not match. Try again.\n"); |
printf("Pass phrases do not match. Try again.\n"); |
exit(1); |
exit(1); |
} |
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/* Destroy the other copy. */ |
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memset(passphrase2, 0, strlen(passphrase2)); |
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xfree(passphrase2); |
} |
} |
/* Destroy the other copy. */ |
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memset(passphrase2, 0, strlen(passphrase2)); |
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xfree(passphrase2); |
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} |
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/* Save the file using the new passphrase. */ |
/* Save the file using the new passphrase. */ |
if (!save_private_key(buf, passphrase1, private_key, comment)) |
if (!save_private_key(identity_file, passphrase1, private_key, comment)) { |
{ |
printf("Saving the key failed: %s: %s.\n", |
printf("Saving the key failed: %s: %s.\n", |
identity_file, strerror(errno)); |
buf, strerror(errno)); |
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase1, 0, strlen(passphrase1)); |
xfree(passphrase1); |
xfree(passphrase1); |
RSA_free(private_key); |
RSA_free(private_key); |
xfree(comment); |
xfree(comment); |
exit(1); |
exit(1); |
} |
} |
/* Destroy the passphrase and the copy of the key in memory. */ |
/* Destroy the passphrase and the copy of the key in memory. */ |
memset(passphrase1, 0, strlen(passphrase1)); |
memset(passphrase1, 0, strlen(passphrase1)); |
xfree(passphrase1); |
xfree(passphrase1); |
RSA_free(private_key); /* Destroys contents */ |
RSA_free(private_key); /* Destroys contents */ |
xfree(comment); |
xfree(comment); |
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printf("Your identification has been saved with the new passphrase.\n"); |
printf("Your identification has been saved with the new passphrase.\n"); |
exit(0); |
exit(0); |
} |
} |
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/* Change the comment of a private key file. */ |
/* Change the comment of a private key file. */ |
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void |
void |
do_change_comment(struct passwd *pw) |
do_change_comment(struct passwd *pw) |
{ |
{ |
char buf[1024], new_comment[1024], *comment; |
char new_comment[1024], *comment; |
RSA *private_key; |
RSA *private_key; |
char *passphrase; |
char *passphrase; |
struct stat st; |
struct stat st; |
FILE *f; |
FILE *f; |
char *tmpbuf; |
char *tmpbuf; |
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/* Read key file name. */ |
if (!have_identity) |
if (identity_file) |
ask_filename(pw, "Enter file in which the key is"); |
{ |
/* Check if the file exists. */ |
strncpy(buf, identity_file, sizeof(buf)); |
if (stat(identity_file, &st) < 0) { |
buf[sizeof(buf) - 1] = '\0'; |
perror(identity_file); |
} |
exit(1); |
else |
} |
{ |
/* Try to load the public key from the file the verify that it is |
printf("Enter file in which the key is ($HOME/%s): ", |
readable and of the proper format. */ |
SSH_CLIENT_IDENTITY); |
public_key = RSA_new(); |
fflush(stdout); |
if (!load_public_key(identity_file, public_key, NULL)) { |
if (fgets(buf, sizeof(buf), stdin) == NULL) |
printf("%s is not a valid key file.\n", identity_file); |
exit(1); |
exit(1); |
if (strchr(buf, '\n')) |
} |
*strchr(buf, '\n') = 0; |
private_key = RSA_new(); |
if (strcmp(buf, "") == 0) |
/* Try to load the file with empty passphrase. */ |
snprintf(buf, sizeof buf, "%s/%s", pw->pw_dir, SSH_CLIENT_IDENTITY); |
if (load_private_key(identity_file, "", private_key, &comment)) |
} |
passphrase = xstrdup(""); |
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else { |
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/* Read passphrase from the user. */ |
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if (identity_passphrase) |
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passphrase = xstrdup(identity_passphrase); |
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else if (identity_new_passphrase) |
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passphrase = xstrdup(identity_new_passphrase); |
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else |
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passphrase = read_passphrase("Enter passphrase: ", 1); |
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/* Try to load using the passphrase. */ |
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if (!load_private_key(identity_file, passphrase, private_key, &comment)) { |
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memset(passphrase, 0, strlen(passphrase)); |
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xfree(passphrase); |
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printf("Bad passphrase.\n"); |
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exit(1); |
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} |
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} |
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printf("Key now has comment '%s'\n", comment); |
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/* Check if the file exists. */ |
if (identity_comment) { |
if (stat(buf, &st) < 0) |
strlcpy(new_comment, identity_comment, sizeof(new_comment)); |
{ |
} else { |
perror(buf); |
printf("Enter new comment: "); |
exit(1); |
fflush(stdout); |
} |
if (!fgets(new_comment, sizeof(new_comment), stdin)) { |
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memset(passphrase, 0, strlen(passphrase)); |
/* Try to load the public key from the file the verify that it is |
RSA_free(private_key); |
readable and of the proper format. */ |
exit(1); |
public_key = RSA_new(); |
} |
if (!load_public_key(buf, public_key, NULL)) |
/* Remove terminating newline from comment. */ |
{ |
if (strchr(new_comment, '\n')) |
printf("%s is not a valid key file.\n", buf); |
*strchr(new_comment, '\n') = 0; |
exit(1); |
} |
} |
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private_key = RSA_new(); |
/* Save the file using the new passphrase. */ |
/* Try to load the file with empty passphrase. */ |
if (!save_private_key(identity_file, passphrase, private_key, new_comment)) { |
if (load_private_key(buf, "", private_key, &comment)) |
printf("Saving the key failed: %s: %s.\n", |
passphrase = xstrdup(""); |
identity_file, strerror(errno)); |
else |
memset(passphrase, 0, strlen(passphrase)); |
{ |
xfree(passphrase); |
/* Read passphrase from the user. */ |
RSA_free(private_key); |
if (identity_passphrase) |
xfree(comment); |
passphrase = xstrdup(identity_passphrase); |
exit(1); |
else |
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if (identity_new_passphrase) |
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passphrase = xstrdup(identity_new_passphrase); |
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else |
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passphrase = read_passphrase("Enter passphrase: ", 1); |
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/* Try to load using the passphrase. */ |
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if (!load_private_key(buf, passphrase, private_key, &comment)) |
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{ |
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memset(passphrase, 0, strlen(passphrase)); |
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xfree(passphrase); |
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printf("Bad passphrase.\n"); |
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exit(1); |
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} |
} |
} |
/* Destroy the passphrase and the private key in memory. */ |
printf("Key now has comment '%s'\n", comment); |
memset(passphrase, 0, strlen(passphrase)); |
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xfree(passphrase); |
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RSA_free(private_key); |
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if (identity_comment) |
/* Save the public key in text format in a file with the same name |
{ |
but .pub appended. */ |
strncpy(new_comment, identity_comment, sizeof(new_comment)); |
strlcat(identity_file, ".pub", sizeof(identity_file)); |
new_comment[sizeof(new_comment) - 1] = '\0'; |
f = fopen(identity_file, "w"); |
} |
if (!f) { |
else |
printf("Could not save your public key in %s\n", identity_file); |
{ |
exit(1); |
printf("Enter new comment: "); |
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fflush(stdout); |
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if (!fgets(new_comment, sizeof(new_comment), stdin)) |
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{ |
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memset(passphrase, 0, strlen(passphrase)); |
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RSA_free(private_key); |
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exit(1); |
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} |
} |
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fprintf(f, "%d ", BN_num_bits(public_key->n)); |
/* Remove terminating newline from comment. */ |
tmpbuf = BN_bn2dec(public_key->e); |
if (strchr(new_comment, '\n')) |
fprintf(f, "%s ", tmpbuf); |
*strchr(new_comment, '\n') = 0; |
free(tmpbuf); |
} |
tmpbuf = BN_bn2dec(public_key->n); |
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fprintf(f, "%s %s\n", tmpbuf, new_comment); |
/* Save the file using the new passphrase. */ |
free(tmpbuf); |
if (!save_private_key(buf, passphrase, private_key, new_comment)) |
fclose(f); |
{ |
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printf("Saving the key failed: %s: %s.\n", |
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buf, strerror(errno)); |
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memset(passphrase, 0, strlen(passphrase)); |
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xfree(passphrase); |
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RSA_free(private_key); |
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xfree(comment); |
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exit(1); |
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} |
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/* Destroy the passphrase and the private key in memory. */ |
xfree(comment); |
memset(passphrase, 0, strlen(passphrase)); |
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xfree(passphrase); |
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RSA_free(private_key); |
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|
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/* Save the public key in text format in a file with the same name but |
printf("The comment in your key file has been changed.\n"); |
.pub appended. */ |
exit(0); |
strcat(buf, ".pub"); |
} |
f = fopen(buf, "w"); |
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if (!f) |
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{ |
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printf("Could not save your public key in %s\n", buf); |
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exit(1); |
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} |
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fprintf(f, "%d ", BN_num_bits(public_key->n)); |
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tmpbuf = BN_bn2dec(public_key->e); |
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fprintf(f, "%s ", tmpbuf); |
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free (tmpbuf); |
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tmpbuf = BN_bn2dec(public_key->n); |
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fprintf(f, "%s %s\n", tmpbuf, new_comment); |
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free (tmpbuf); |
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fclose(f); |
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xfree(comment); |
void |
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usage(void) |
printf("The comment in your key file has been changed.\n"); |
{ |
exit(0); |
printf("ssh-keygen version %s\n", SSH_VERSION); |
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printf("Usage: %s [-b bits] [-p] [-c] [-f file] [-P pass] [-N new-pass] [-C comment]\n", __progname); |
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exit(1); |
} |
} |
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/* Main program for key management. */ |
/* Main program for key management. */ |
|
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int |
int |
main(int ac, char **av) |
main(int ac, char **av) |
{ |
{ |
char buf[16384], buf2[1024], *passphrase1, *passphrase2; |
char dotsshdir[16 * 1024], comment[1024], *passphrase1, *passphrase2; |
struct passwd *pw; |
struct passwd *pw; |
char *tmpbuf; |
char *tmpbuf; |
int opt; |
int opt; |
struct stat st; |
struct stat st; |
FILE *f; |
FILE *f; |
char hostname[MAXHOSTNAMELEN]; |
char hostname[MAXHOSTNAMELEN]; |
extern int optind; |
extern int optind; |
extern char *optarg; |
extern char *optarg; |
|
|
/* check if RSA support exists */ |
/* check if RSA support exists */ |
if (rsa_alive() == 0) { |
if (rsa_alive() == 0) { |
extern char *__progname; |
extern char *__progname; |
|
|
fprintf(stderr, |
fprintf(stderr, |
"%s: no RSA support in libssl and libcrypto. See ssl(8).\n", |
"%s: no RSA support in libssl and libcrypto. See ssl(8).\n", |
__progname); |
__progname); |
exit(1); |
exit(1); |
} |
} |
|
/* Get user\'s passwd structure. We need this for the home |
|
directory. */ |
|
pw = getpwuid(getuid()); |
|
if (!pw) { |
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printf("You don't exist, go away!\n"); |
|
exit(1); |
|
} |
|
/* Parse command line arguments. */ |
|
while ((opt = getopt(ac, av, "qpclb:f:P:N:C:")) != EOF) { |
|
switch (opt) { |
|
case 'b': |
|
bits = atoi(optarg); |
|
if (bits < 512 || bits > 32768) { |
|
printf("Bits has bad value.\n"); |
|
exit(1); |
|
} |
|
break; |
|
|
/* Get user\'s passwd structure. We need this for the home directory. */ |
case 'l': |
pw = getpwuid(getuid()); |
print_fingerprint = 1; |
if (!pw) |
break; |
{ |
|
printf("You don't exist, go away!\n"); |
|
exit(1); |
|
} |
|
|
|
/* Create ~/.ssh directory if it doesn\'t already exist. */ |
case 'p': |
snprintf(buf, sizeof buf, "%s/%s", pw->pw_dir, SSH_USER_DIR); |
change_passphrase = 1; |
if (stat(buf, &st) < 0) |
break; |
if (mkdir(buf, 0755) < 0) |
|
error("Could not create directory '%s'.", buf); |
|
|
|
/* Parse command line arguments. */ |
case 'c': |
while ((opt = getopt(ac, av, "qpcb:f:P:N:C:")) != EOF) |
change_comment = 1; |
{ |
break; |
switch (opt) |
|
{ |
|
case 'b': |
|
bits = atoi(optarg); |
|
if (bits < 512 || bits > 32768) |
|
{ |
|
printf("Bits has bad value.\n"); |
|
exit(1); |
|
} |
|
break; |
|
|
|
case 'p': |
case 'f': |
change_passphrase = 1; |
strlcpy(identity_file, optarg, sizeof(identity_file)); |
break; |
have_identity = 1; |
|
break; |
|
|
case 'c': |
case 'P': |
change_comment = 1; |
identity_passphrase = optarg; |
break; |
break; |
|
|
case 'f': |
case 'N': |
identity_file = optarg; |
identity_new_passphrase = optarg; |
break; |
break; |
|
|
case 'P': |
|
identity_passphrase = optarg; |
|
break; |
|
|
|
case 'N': |
case 'C': |
identity_new_passphrase = optarg; |
identity_comment = optarg; |
break; |
break; |
|
|
case 'C': |
case 'q': |
identity_comment = optarg; |
quiet = 1; |
break; |
break; |
|
|
case 'q': |
case '?': |
quiet = 1; |
default: |
break; |
usage(); |
|
} |
case '?': |
|
default: |
|
printf("ssh-keygen version %s\n", SSH_VERSION); |
|
printf("Usage: %s [-b bits] [-p] [-c] [-f file] [-P pass] [-N new-pass] [-C comment]\n", av[0]); |
|
exit(1); |
|
} |
} |
} |
if (optind < ac) { |
if (optind < ac) |
printf("Too many arguments.\n"); |
{ |
usage(); |
printf("Too many arguments.\n"); |
} |
exit(1); |
if (change_passphrase && change_comment) { |
} |
printf("Can only have one of -p and -c.\n"); |
if (change_passphrase && change_comment) |
usage(); |
{ |
} |
printf("Can only have one of -p and -c.\n"); |
if (print_fingerprint) |
exit(1); |
do_fingerprint(pw); |
} |
|
|
|
/* If the user requested to change the passphrase, do it now. This |
/* If the user requested to change the passphrase, do it now. |
function never returns. */ |
This function never returns. */ |
if (change_passphrase) |
if (change_passphrase) |
do_change_passphrase(pw); |
do_change_passphrase(pw); |
|
|
/* If the user requested to change the comment, do it now. This function |
/* If the user requested to change the comment, do it now. This |
never returns. */ |
function never returns. */ |
if (change_comment) |
if (change_comment) |
do_change_comment(pw); |
do_change_comment(pw); |
|
|
/* Initialize random number generator. This may take a while if the |
arc4random_stir(); |
user has no seed file, so display a message to the user. */ |
|
if (!quiet) |
|
printf("Initializing random number generator...\n"); |
|
arc4random_stir(); |
|
|
|
if (quiet) |
if (quiet) |
rsa_set_verbose(0); |
rsa_set_verbose(0); |
|
|
/* Generate the rsa key pair. */ |
/* Generate the rsa key pair. */ |
private_key = RSA_new(); |
private_key = RSA_new(); |
public_key = RSA_new(); |
public_key = RSA_new(); |
rsa_generate_key(private_key, public_key, bits); |
rsa_generate_key(private_key, public_key, bits); |
|
|
ask_file_again: |
if (!have_identity) |
|
ask_filename(pw, "Enter file in which to save the key"); |
|
|
/* Ask for a file to save the key in. */ |
/* Create ~/.ssh directory if it doesn\'t already exist. */ |
if (identity_file) |
snprintf(dotsshdir, sizeof dotsshdir, "%s/%s", pw->pw_dir, SSH_USER_DIR); |
{ |
if (strstr(identity_file, dotsshdir) != NULL && |
strncpy(buf, identity_file, sizeof(buf)); |
stat(dotsshdir, &st) < 0) { |
buf[sizeof(buf) - 1] = '\0'; |
if (mkdir(dotsshdir, 0755) < 0) |
} |
error("Could not create directory '%s'.", dotsshdir); |
else |
else if (!quiet) |
{ |
printf("Created directory '%s'.\n", dotsshdir); |
printf("Enter file in which to save the key ($HOME/%s): ", |
} |
SSH_CLIENT_IDENTITY); |
/* If the file already exists, ask the user to confirm. */ |
fflush(stdout); |
if (stat(identity_file, &st) >= 0) { |
if (fgets(buf, sizeof(buf), stdin) == NULL) |
char yesno[3]; |
exit(1); |
printf("%s already exists.\n", identity_file); |
if (strchr(buf, '\n')) |
printf("Overwrite (y/n)? "); |
*strchr(buf, '\n') = 0; |
fflush(stdout); |
if (strcmp(buf, "") == 0) |
if (fgets(yesno, sizeof(yesno), stdin) == NULL) |
snprintf(buf, sizeof buf, "%s/%s", pw->pw_dir, SSH_CLIENT_IDENTITY); |
exit(1); |
} |
if (yesno[0] != 'y' && yesno[0] != 'Y') |
|
exit(1); |
|
} |
|
/* Ask for a passphrase (twice). */ |
|
if (identity_passphrase) |
|
passphrase1 = xstrdup(identity_passphrase); |
|
else if (identity_new_passphrase) |
|
passphrase1 = xstrdup(identity_new_passphrase); |
|
else { |
|
passphrase_again: |
|
passphrase1 = |
|
read_passphrase("Enter passphrase (empty for no passphrase): ", 1); |
|
passphrase2 = read_passphrase("Enter same passphrase again: ", 1); |
|
if (strcmp(passphrase1, passphrase2) != 0) { |
|
/* The passphrases do not match. Clear them and retry. */ |
|
memset(passphrase1, 0, strlen(passphrase1)); |
|
memset(passphrase2, 0, strlen(passphrase2)); |
|
xfree(passphrase1); |
|
xfree(passphrase2); |
|
printf("Passphrases do not match. Try again.\n"); |
|
goto passphrase_again; |
|
} |
|
/* Clear the other copy of the passphrase. */ |
|
memset(passphrase2, 0, strlen(passphrase2)); |
|
xfree(passphrase2); |
|
} |
|
|
/* If the file aready exists, ask the user to confirm. */ |
/* Create default commend field for the passphrase. The user can |
if (stat(buf, &st) >= 0) |
later edit this field. */ |
{ |
if (identity_comment) { |
printf("%s already exists.\n", buf); |
strlcpy(comment, identity_comment, sizeof(comment)); |
printf("Overwrite (y/n)? "); |
} else { |
fflush(stdout); |
if (gethostname(hostname, sizeof(hostname)) < 0) { |
if (fgets(buf2, sizeof(buf2), stdin) == NULL) |
perror("gethostname"); |
exit(1); |
exit(1); |
if (buf2[0] != 'y' && buf2[0] != 'Y') |
} |
exit(1); |
snprintf(comment, sizeof comment, "%s@%s", pw->pw_name, hostname); |
} |
} |
|
|
/* Ask for a passphrase (twice). */ |
|
if (identity_passphrase) |
|
passphrase1 = xstrdup(identity_passphrase); |
|
else |
|
if (identity_new_passphrase) |
|
passphrase1 = xstrdup(identity_new_passphrase); |
|
else |
|
{ |
|
passphrase_again: |
|
passphrase1 = |
|
read_passphrase("Enter passphrase (empty for no passphrase): ", 1); |
|
passphrase2 = read_passphrase("Enter same passphrase again: ", 1); |
|
if (strcmp(passphrase1, passphrase2) != 0) |
|
{ |
|
/* The passphrases do not match. Clear them and retry. */ |
|
memset(passphrase1, 0, strlen(passphrase1)); |
|
memset(passphrase2, 0, strlen(passphrase2)); |
|
xfree(passphrase1); |
|
xfree(passphrase2); |
|
printf("Passphrases do not match. Try again.\n"); |
|
goto passphrase_again; |
|
} |
|
/* Clear the other copy of the passphrase. */ |
|
memset(passphrase2, 0, strlen(passphrase2)); |
|
xfree(passphrase2); |
|
} |
|
|
|
/* Create default commend field for the passphrase. The user can later |
/* Save the key with the given passphrase and comment. */ |
edit this field. */ |
if (!save_private_key(identity_file, passphrase1, private_key, comment)) { |
if (identity_comment) |
printf("Saving the key failed: %s: %s.\n", |
{ |
identity_file, strerror(errno)); |
strlcpy(buf2, identity_comment, sizeof(buf2)); |
memset(passphrase1, 0, strlen(passphrase1)); |
} |
xfree(passphrase1); |
else |
exit(1); |
{ |
|
if (gethostname(hostname, sizeof(hostname)) < 0) |
|
{ |
|
perror("gethostname"); |
|
exit(1); |
|
} |
} |
snprintf(buf2, sizeof buf2, "%s@%s", pw->pw_name, hostname); |
/* Clear the passphrase. */ |
} |
memset(passphrase1, 0, strlen(passphrase1)); |
|
xfree(passphrase1); |
|
|
/* Save the key with the given passphrase and comment. */ |
/* Clear the private key and the random number generator. */ |
if (!save_private_key(buf, passphrase1, private_key, buf2)) |
RSA_free(private_key); |
{ |
arc4random_stir(); |
printf("Saving the key failed: %s: %s.\n", |
|
buf, strerror(errno)); |
|
memset(passphrase1, 0, strlen(passphrase1)); |
|
xfree(passphrase1); |
|
goto ask_file_again; |
|
} |
|
/* Clear the passphrase. */ |
|
memset(passphrase1, 0, strlen(passphrase1)); |
|
xfree(passphrase1); |
|
|
|
/* Clear the private key and the random number generator. */ |
if (!quiet) |
RSA_free(private_key); |
printf("Your identification has been saved in %s.\n", identity_file); |
arc4random_stir(); |
|
|
|
if (!quiet) |
/* Save the public key in text format in a file with the same name |
printf("Your identification has been saved in %s.\n", buf); |
but .pub appended. */ |
|
strlcat(identity_file, ".pub", sizeof(identity_file)); |
|
f = fopen(identity_file, "w"); |
|
if (!f) { |
|
printf("Could not save your public key in %s\n", identity_file); |
|
exit(1); |
|
} |
|
fprintf(f, "%d ", BN_num_bits(public_key->n)); |
|
tmpbuf = BN_bn2dec(public_key->e); |
|
fprintf(f, "%s ", tmpbuf); |
|
free(tmpbuf); |
|
tmpbuf = BN_bn2dec(public_key->n); |
|
fprintf(f, "%s %s\n", tmpbuf, comment); |
|
free(tmpbuf); |
|
fclose(f); |
|
|
/* Display the public key on the screen. */ |
if (!quiet) { |
if (!quiet) { |
printf("Your public key has been saved in %s.\n", identity_file); |
printf("Your public key is:\n"); |
printf("The key fingerprint is:\n"); |
printf("%d ", BN_num_bits(public_key->n)); |
printf("%d %s %s\n", BN_num_bits(public_key->n), |
tmpbuf = BN_bn2dec(public_key->e); |
fingerprint(public_key->e, public_key->n), |
printf("%s ", tmpbuf); |
comment); |
free(tmpbuf); |
} |
tmpbuf = BN_bn2dec(public_key->n); |
exit(0); |
printf("%s %s\n", tmpbuf, buf2); |
|
free(tmpbuf); |
|
} |
|
|
|
/* Save the public key in text format in a file with the same name but |
|
.pub appended. */ |
|
strcat(buf, ".pub"); |
|
f = fopen(buf, "w"); |
|
if (!f) |
|
{ |
|
printf("Could not save your public key in %s\n", buf); |
|
exit(1); |
|
} |
|
fprintf(f, "%d ", BN_num_bits(public_key->n)); |
|
tmpbuf = BN_bn2dec(public_key->e); |
|
fprintf(f, "%s ", tmpbuf); |
|
free(tmpbuf); |
|
tmpbuf = BN_bn2dec(public_key->n); |
|
fprintf(f, "%s %s\n", tmpbuf, buf2); |
|
free(tmpbuf); |
|
fclose(f); |
|
|
|
if (!quiet) |
|
printf("Your public key has been saved in %s\n", buf); |
|
|
|
exit(0); |
|
} |
} |