blob: 26f9e9dacb1d7c3d8b47f86807abadc4f0d2d338 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/*
Decrypt an encrypted DSA private key. Then use that key to sign a message.
Written by Jack Lloyd (lloyd@randombit.net), August 5, 2002
Updated to use X.509 and PKCS #8 format keys, October 21, 2002
This file is in the public domain
*/
#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
#include <memory>
#include <botan/botan.h>
#include <botan/look_pk.h>
#include <botan/dsa.h>
using namespace Botan;
const std::string SUFFIX = ".sig";
int main(int argc, char* argv[])
{
if(argc != 4)
{
std::cout << "Usage: " << argv[0] << " keyfile messagefile passphrase"
<< std::endl;
return 1;
}
try {
std::string passphrase(argv[3]);
std::ifstream message(argv[2]);
if(!message)
{
std::cout << "Couldn't read the message file." << std::endl;
return 1;
}
std::string outfile = argv[2] + SUFFIX;
std::ofstream sigfile(outfile.c_str());
if(!sigfile)
{
std::cout << "Couldn't write the signature to "
<< outfile << std::endl;
return 1;
}
LibraryInitializer init;
std::auto_ptr<PKCS8_PrivateKey> key(
PKCS8::load_key(argv[1], passphrase)
);
DSA_PrivateKey* dsakey = dynamic_cast<DSA_PrivateKey*>(key.get());
if(!dsakey)
{
std::cout << "The loaded key is not a DSA key!\n";
return 1;
}
Pipe pipe(new PK_Signer_Filter(get_pk_signer(*dsakey, "EMSA1(SHA-1)")),
new Base64_Encoder);
pipe.start_msg();
message >> pipe;
pipe.end_msg();
sigfile << pipe.read_all_as_string() << std::endl;
}
catch(std::exception& e)
{
std::cout << "Exception caught: " << e.what() << std::endl;
}
return 0;
}
|
