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use botan_sys::*;
use utils::*;
use pubkey::{Privkey, Pubkey};
use rng::RandomNumberGenerator;
#[derive(Debug)]
pub struct Signer {
obj: botan_pk_op_sign_t,
sig_len: usize,
}
impl Drop for Signer {
fn drop(&mut self) {
unsafe { botan_pk_op_sign_destroy(self.obj) };
}
}
impl Signer {
pub fn new(key: &Privkey, padding: &str) -> Result<Signer> {
let padding = make_cstr(padding)?;
let mut obj = ptr::null_mut();
call_botan! { botan_pk_op_sign_create(&mut obj, key.handle(), padding.as_ptr(), 0u32) };
let mut sig_len = 0;
call_botan! { botan_pk_op_sign_output_length(obj, &mut sig_len) };
Ok(Signer { obj, sig_len })
}
pub fn update(&self, data: &[u8]) -> Result<()> {
call_botan! { botan_pk_op_sign_update(self.obj, data.as_ptr(), data.len()) };
Ok(())
}
pub fn finish(&self, rng: &RandomNumberGenerator) -> Result<Vec<u8>> {
call_botan_ffi_returning_vec_u8(self.sig_len, &|out_buf, out_len| {
unsafe { botan_pk_op_sign_finish(self.obj, rng.handle(), out_buf, out_len) }
})
}
}
#[derive(Debug)]
pub struct Decryptor {
obj: botan_pk_op_decrypt_t
}
impl Drop for Decryptor {
fn drop(&mut self) {
unsafe { botan_pk_op_decrypt_destroy(self.obj) };
}
}
impl Decryptor {
pub fn new(key: &Privkey, padding: &str) -> Result<Decryptor> {
let padding = make_cstr(padding)?;
let mut obj = ptr::null_mut();
call_botan! { botan_pk_op_decrypt_create(&mut obj, key.handle(), padding.as_ptr(), 0u32) }
Ok(Decryptor { obj })
}
pub fn decrypt(&self, ctext: &[u8]) -> Result<Vec<u8>> {
let mut ptext_len = 0;
call_botan! { botan_pk_op_decrypt_output_length(self.obj, ctext.len(), &mut ptext_len) };
call_botan_ffi_returning_vec_u8(ptext_len, &|out_buf, out_len| {
unsafe { botan_pk_op_decrypt(self.obj, out_buf, out_len, ctext.as_ptr(), ctext.len()) }
})
}
}
#[derive(Debug)]
pub struct Verifier {
obj: botan_pk_op_verify_t
}
impl Drop for Verifier {
fn drop(&mut self) {
unsafe { botan_pk_op_verify_destroy(self.obj) };
}
}
impl Verifier {
pub fn new(key: &Pubkey, padding: &str) -> Result<Verifier> {
let padding = make_cstr(padding)?;
let mut obj = ptr::null_mut();
call_botan! { botan_pk_op_verify_create(&mut obj, key.handle(), padding.as_ptr(), 0u32) }
Ok(Verifier { obj })
}
pub fn update(&self, data: &[u8]) -> Result<()> {
call_botan! { botan_pk_op_verify_update(self.obj, data.as_ptr(), data.len()) };
Ok(())
}
pub fn finish(&self, signature: &[u8]) -> Result<bool> {
let rc = unsafe { botan_pk_op_verify_finish(self.obj, signature.as_ptr(), signature.len()) };
if rc == 0 {
Ok(true)
}
else if rc == BOTAN_FFI_INVALID_VERIFIER {
Ok(false)
}
else {
Err(Error::from(rc))
}
}
}
#[derive(Debug)]
pub struct Encryptor {
obj: botan_pk_op_encrypt_t
}
impl Drop for Encryptor {
fn drop(&mut self) {
unsafe { botan_pk_op_encrypt_destroy(self.obj) };
}
}
impl Encryptor {
pub fn new(key: &Pubkey, padding: &str) -> Result<Encryptor> {
let padding = make_cstr(padding)?;
let mut obj = ptr::null_mut();
call_botan! { botan_pk_op_encrypt_create(&mut obj, key.handle(), padding.as_ptr(), 0u32) }
Ok(Encryptor { obj })
}
pub fn encrypt(&self, ptext: &[u8], rng: &RandomNumberGenerator) -> Result<Vec<u8>> {
let mut ctext_len = 0;
call_botan! { botan_pk_op_encrypt_output_length(self.obj, ptext.len(), &mut ctext_len) };
call_botan_ffi_returning_vec_u8(ctext_len, &|out_buf, out_len| {
unsafe { botan_pk_op_encrypt(self.obj, rng.handle(), out_buf, out_len, ptext.as_ptr(), ptext.len()) }
})
}
}
#[derive(Debug)]
pub struct KeyAgreement {
obj: botan_pk_op_ka_t
}
impl Drop for KeyAgreement {
fn drop(&mut self) {
unsafe { botan_pk_op_key_agreement_destroy(self.obj) };
}
}
impl KeyAgreement {
pub fn new(key: &Privkey, kdf: &str) -> Result<KeyAgreement> {
let kdf = make_cstr(kdf)?;
let mut obj = ptr::null_mut();
call_botan! { botan_pk_op_key_agreement_create(&mut obj, key.handle(), kdf.as_ptr(), 0u32) }
Ok(KeyAgreement { obj })
}
pub fn agree(&self, requested_output: usize, counterparty_key: &[u8], salt: &[u8]) -> Result<Vec<u8>> {
let mut ka_len = requested_output;
if ka_len == 0 {
call_botan! { botan_pk_op_key_agreement_size(self.obj, &mut ka_len) };
}
call_botan_ffi_returning_vec_u8(ka_len, &|out_buf, out_len| {
unsafe { botan_pk_op_key_agreement(self.obj, out_buf, out_len,
counterparty_key.as_ptr(), counterparty_key.len(),
salt.as_ptr(), salt.len()) }
})
}
}