[go: up one dir, main page]

botan 0.1.3

Rust wrapper for Botan cryptography library
Documentation 
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
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133

use super::{Error, Result};
use super::{call_botan_ffi_returning_vec_u8, call_botan_ffi_returning_string};

use botan_sys::*;

use rng::RandomNumberGenerator;
use std::os::raw::{c_char};
use std::ffi::CString;
use std::ptr;

#[derive(Debug)]
pub struct Pubkey {
    obj: botan_pubkey_t
}

#[derive(Debug)]
pub struct Privkey {
    obj: botan_privkey_t
}

impl Drop for Privkey {
    fn drop(&mut self) {
        unsafe { botan_privkey_destroy(self.obj) };
    }
}

impl Drop for Pubkey {
    fn drop(&mut self) {
        unsafe { botan_pubkey_destroy(self.obj) };
    }
}

impl Privkey {

    pub(crate) fn handle(&self) -> botan_privkey_t { self.obj }

    pub fn create(alg: &str, params: &str, rng: &RandomNumberGenerator) -> Result<Privkey> {

        let mut obj = ptr::null_mut();

        call_botan! { botan_privkey_create(&mut obj,
                                           CString::new(alg).unwrap().as_ptr(),
                                           CString::new(params).unwrap().as_ptr(),
                                           rng.handle()) }

        Ok(Privkey { obj })
    }

    pub fn load_der(der: &[u8]) -> Result<Privkey> {
        let mut obj = ptr::null_mut();

        // Don't need this with 2.8
        let rng = RandomNumberGenerator::new_system()?;
        call_botan! { botan_privkey_load(&mut obj, rng.handle(), der.as_ptr(), der.len(), ptr::null()) }

        Ok(Privkey { obj })
    }

    pub fn check_key(&self, rng: &RandomNumberGenerator) -> Result<bool> {

        let flags = 1u32;
        let rc = unsafe { botan_privkey_check_key(self.obj, rng.handle(), flags) };

        if rc == 0 {
            Ok(true)
        }
        else if rc == -1 {
            Ok(false)
        }
        else {
            Err(Error::from(rc))
        }
    }

    pub fn pubkey(&self) -> Result<Pubkey> {
        let mut obj = ptr::null_mut();
        call_botan! { botan_privkey_export_pubkey(&mut obj, self.obj) }
        Ok(Pubkey { obj })
    }

    pub fn algo_name(&self) -> Result<String> {
        // FIXME(2.8) need botan_privkey_get_name
        self.pubkey()?.algo_name()
    }

    pub fn der_encode(&self) -> Result<Vec<u8>> {
        call_botan_ffi_returning_vec_u8(&|out_buf, out_len| {
            unsafe { botan_privkey_export(self.obj, out_buf, out_len, 0u32) }
        })
    }

    pub fn pem_encode(&self) -> Result<String> {
        call_botan_ffi_returning_string(&|out_buf, out_len| {
            unsafe { botan_privkey_export(self.obj, out_buf, out_len, 1u32) }
        })
    }

    pub fn key_agreement_key(&self) -> Result<Vec<u8>> {
        call_botan_ffi_returning_vec_u8(&|out_buf, out_len| {
            unsafe { botan_pk_op_key_agreement_export_public(self.obj, out_buf, out_len) }
        })
    }
}

impl Pubkey {

    pub(crate) fn handle(&self) -> botan_pubkey_t { self.obj }

    pub fn load_der(der: &[u8]) -> Result<Pubkey> {
        let mut obj = ptr::null_mut();
        call_botan! { botan_pubkey_load(&mut obj, der.as_ptr(), der.len()) }
        Ok(Pubkey { obj })
    }

    pub fn der_encode(&self) -> Result<Vec<u8>> {
        call_botan_ffi_returning_vec_u8(&|out_buf, out_len| {
            unsafe { botan_pubkey_export(self.obj, out_buf, out_len, 0u32) }
        })
    }

    pub fn pem_encode(&self) -> Result<String> {
        call_botan_ffi_returning_string(&|out_buf, out_len| {
            unsafe { botan_pubkey_export(self.obj, out_buf, out_len, 1u32) }
        })
    }

    pub fn algo_name(&self) -> Result<String> {
        call_botan_ffi_returning_string(&|out_buf, out_len| {
            unsafe { botan_pubkey_algo_name(self.obj, out_buf as *mut c_char, out_len) }
        })
    }

}