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Make dropbearkey only generate 1024 bit keys

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--HG--
extra : convert_revision : 8a7db1e2fdc5636abb338adb636babc32f465739
This commit is contained in:
Matt Johnston 2007-08-08 15:57:50 +00:00
parent ddb61adcc9
commit 58296a95f1
2 changed files with 10 additions and 2 deletions
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4
CHANGES
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@ -21,6 +21,10 @@
- Add -K <keepalive_time> argument, ensuring that data is transmitted
over the connection at least every N seconds.
- dropbearkey will no longer generate DSS keys of sizes other than 1024
bits, as required by the DSS specification. (Other sizes are still
accepted for use to provide backwards compatibility).
0.49 - Fri 23 February 2007
- Security: dbclient previously would prompt to confirm a

8
dropbearkey.c
View File

@ -75,6 +75,7 @@ static void printhelp(char * progname) {
#endif
"-f filename Use filename for the secret key\n"
"-s bits Key size in bits, should be a multiple of 8 (optional)\n"
" (DSS has a fixed size of 1024 bits)\n"
"-y Just print the publickey and fingerprint for the\n private key in <filename>.\n"
#ifdef DEBUG_TRACE
"-v verbose\n"
@ -187,8 +188,11 @@ int main(int argc, char ** argv) {
fprintf(stderr, "Bits must be an integer\n");
exit(EXIT_FAILURE);
}
if (bits < 512 || bits > 4096 || (bits % 8 != 0)) {
if (keytype == DROPBEAR_SIGNKEY_DSS && bits != 1024) {
fprintf(stderr, "DSS keys have a fixed size of 1024 bits\n");
exit(EXIT_FAILURE);
} else if (bits < 512 || bits > 4096 || (bits % 8 != 0)) {
fprintf(stderr, "Bits must satisfy 512 <= bits <= 4096, and be a"
" multiple of 8\n");
exit(EXIT_FAILURE);