projects / thirdparty / openssl.git / blame
| Commit | Line | Data |
|---|---|---|
| ef7eaa4c DSH |
1 | =pod |
| 2 | ||
| 3 | =head1 NAME | |
| 4 | ||
| 5 | dh - DH parameter manipulation and generation | |
| 6 | ||
| 7 | =head1 SYNOPSIS | |
| 8 | ||
| 9 | B<openssl dh> | |
| 10 | [B<-inform DER|PEM>] | |
| 11 | [B<-outform DER|PEM>] | |
| 12 | [B<-in filename>] | |
| 13 | [B<-out filename>] | |
| 14 | [B<-noout>] | |
| 15 | [B<-text>] | |
| 16 | [B<-C>] | |
| 17 | ||
| 18 | =head1 DESCRIPTION | |
| 19 | ||
| 20 | This command is used to manipulate DH parameter files. | |
| 21 | ||
| 22 | =head1 OPTIONS | |
| 23 | ||
| 24 | =over 4 | |
| 25 | ||
| 26 | =item B<-inform DER|PEM> | |
| 27 | ||
| 28 | This specifies the input format. The B<DER> option uses an ASN1 DER encoded | |
| 29 | form compatible with the PKCS#3 DHparameter structure. The PEM form is the | |
| 30 | default format: it consists of the B<DER> format base64 encoded with | |
| 31 | additional header and footer lines. | |
| 32 | ||
| 33 | =item B<-outform DER|PEM> | |
| 34 | ||
| 35 | This specifies the output format, the options have the same meaning as the | |
| 36 | B<-inform> option. | |
| 37 | ||
| 38 | =item B<-in filename> | |
| 39 | ||
| 40 | This specifies the input filename to read parameters from or standard input if | |
| 41 | this option is not specified. | |
| 42 | ||
| 43 | =item B<-out filename> | |
| 44 | ||
| 45 | This specifies the output filename parameters to. Standard output is used | |
| 46 | if this option is not present. The output filename should B<not> be the same | |
| 47 | as the input filename. | |
| 48 | ||
| 49 | =item B<-noout> | |
| 50 | ||
| 51 | this option inhibits the output of the encoded version of the parameters. | |
| 52 | ||
| 53 | =item B<-text> | |
| 54 | ||
| 55 | this option prints out the DH parameters in human readable form. | |
| 56 | ||
| 57 | =item B<-C> | |
| 58 | ||
| 59 | this option converts the parameters into C code. The parameters can then | |
| 60 | be loaded by calling the B<get_dhXXX()> function. | |
| 61 | ||
| 62 | =back | |
| 63 | ||
| 64 | =head1 NOTES | |
| 65 | ||
| 66 | PEM format DH parameters use the header and footer lines: | |
| 67 | ||
| 68 | -----BEGIN DH PARAMETERS----- | |
| 69 | -----END DH PARAMETERS----- | |
| 70 | ||
| 71 | OpenSSL currently only supports the older PKCS#3 DH, not the newer X9.42 | |
| 72 | DH. | |
| 73 | ||
| 74 | This program manipulates DH parameters not keys. | |
| 75 | ||
| 76 | =head1 BUGS | |
| 77 | ||
| 78 | This program is badly named: the B<rsa> and B<dsa> programs manipulate keys | |
| 79 | and not parameters. | |
| 80 | ||
| 81 | There should be a way to generate and manipulate DH keys. | |
| 82 | ||
| 83 | =head1 SEE ALSO | |
| 84 | ||
| 85 | dsaparam(1) | |
| 86 | ||
| 87 | =cut |