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Signature and verification support

This commit is contained in:
Steven Fackler 2016-10-15 10:36:59 -07:00
parent b564cb5db7
commit f73313d688
2 changed files with 207 additions and 5 deletions
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12
openssl/src/crypto/mod.rs
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@ -14,14 +14,16 @@
// limitations under the License. // limitations under the License.
// //
mod util;
pub mod dsa;
pub mod hash; pub mod hash;
pub mod hmac; pub mod hmac;
pub mod pkcs5; pub mod memcmp;
pub mod pkcs12; pub mod pkcs12;
pub mod pkcs5;
pub mod pkey; pub mod pkey;
pub mod rand; pub mod rand;
pub mod symm;
pub mod memcmp;
pub mod rsa; pub mod rsa;
pub mod dsa; pub mod sign;
mod util; pub mod symm;

200
openssl/src/crypto/sign.rs Normal file
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@ -0,0 +1,200 @@
use ffi;
use std::io::{self, Write};
use std::marker::PhantomData;
use std::ptr;
use HashTypeInternals;
use crypto::hash::Type;
use crypto::pkey::PKey;
use error::ErrorStack;
#[cfg(ossl110)]
use ffi::{EVP_MD_CTX_new, EVP_MD_CTX_free};
#[cfg(any(ossl101, ossl102))]
use ffi::{EVP_MD_CTX_create as EVP_MD_CTX_new, EVP_MD_CTX_destroy as EVP_MD_CTX_free};
pub struct Signer<'a>(*mut ffi::EVP_MD_CTX, PhantomData<&'a PKey>);
impl<'a> Drop for Signer<'a> {
fn drop(&mut self) {
unsafe {
EVP_MD_CTX_free(self.0);
}
}
}
impl<'a> Signer<'a> {
pub fn new(type_: Type, pkey: &'a PKey) -> Result<Signer<'a>, ErrorStack> {
unsafe {
ffi::init();
let ctx = try_ssl_null!(EVP_MD_CTX_new());
let r = ffi::EVP_DigestSignInit(ctx,
ptr::null_mut(),
type_.evp_md(),
ptr::null_mut(),
pkey.as_ptr());
if r != 1 {
EVP_MD_CTX_free(ctx);
return Err(ErrorStack::get());
}
Ok(Signer(ctx, PhantomData))
}
}
pub fn update(&mut self, buf: &[u8]) -> Result<(), ErrorStack> {
unsafe {
try_ssl_if!(ffi::EVP_DigestUpdate(self.0, buf.as_ptr() as *const _, buf.len()) != 1);
Ok(())
}
}
pub fn finish(&self) -> Result<Vec<u8>, ErrorStack> {
unsafe {
let mut len = 0;
try_ssl_if!(ffi::EVP_DigestSignFinal(self.0, ptr::null_mut(), &mut len) != 1);
let mut buf = vec![0; len];
try_ssl_if!(ffi::EVP_DigestSignFinal(self.0, buf.as_mut_ptr() as *mut _, &mut len)
!= 1);
Ok(buf)
}
}
}
impl<'a> Write for Signer<'a> {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
try!(self.update(buf));
Ok(buf.len())
}
fn flush(&mut self) -> io::Result<()> {
Ok(())
}
}
pub struct Verifier<'a>(*mut ffi::EVP_MD_CTX, PhantomData<&'a PKey>);
impl<'a> Drop for Verifier<'a> {
fn drop(&mut self) {
unsafe {
EVP_MD_CTX_free(self.0);
}
}
}
impl<'a> Verifier<'a> {
pub fn new(type_: Type, pkey: &'a PKey) -> Result<Verifier<'a>, ErrorStack> {
unsafe {
ffi::init();
let ctx = try_ssl_null!(EVP_MD_CTX_new());
let r = ffi::EVP_DigestVerifyInit(ctx,
ptr::null_mut(),
type_.evp_md(),
ptr::null_mut(),
pkey.as_ptr());
if r != 1 {
EVP_MD_CTX_free(ctx);
return Err(ErrorStack::get());
}
Ok(Verifier(ctx, PhantomData))
}
}
pub fn update(&mut self, buf: &[u8]) -> Result<(), ErrorStack> {
unsafe {
try_ssl_if!(ffi::EVP_DigestUpdate(self.0, buf.as_ptr() as *const _, buf.len()) != 1);
Ok(())
}
}
pub fn finish(&self, signature: &[u8]) -> Result<(), ErrorStack> {
unsafe {
try_ssl_if!(ffi::EVP_DigestVerifyFinal(self.0,
signature.as_ptr() as *const _,
signature.len()) != 1);
Ok(())
}
}
}
impl<'a> Write for Verifier<'a> {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
try!(self.update(buf));
Ok(buf.len())
}
fn flush(&mut self) -> io::Result<()> {
Ok(())
}
}
#[cfg(test)]
mod test {
use crypto::hash::Type;
use crypto::sign::{Signer, Verifier};
use crypto::rsa::RSA;
use crypto::pkey::PKey;
static INPUT: &'static [u8] =
&[101, 121, 74, 104, 98, 71, 99, 105, 79, 105, 74, 83, 85, 122, 73, 49, 78, 105, 74, 57,
46, 101, 121, 74, 112, 99, 51, 77, 105, 79, 105, 74, 113, 98, 50, 85, 105, 76, 65, 48,
75, 73, 67, 74, 108, 101, 72, 65, 105, 79, 106, 69, 122, 77, 68, 65, 52, 77, 84, 107,
122, 79, 68, 65, 115, 68, 81, 111, 103, 73, 109, 104, 48, 100, 72, 65, 54, 76, 121,
57, 108, 101, 71, 70, 116, 99, 71, 120, 108, 76, 109, 78, 118, 98, 83, 57, 112, 99,
49, 57, 121, 98, 50, 57, 48, 73, 106, 112, 48, 99, 110, 86, 108, 102, 81];
static SIGNATURE: &'static [u8] =
&[112, 46, 33, 137, 67, 232, 143, 209, 30, 181, 216, 45, 191, 120, 69, 243, 65, 6, 174,
27, 129, 255, 247, 115, 17, 22, 173, 209, 113, 125, 131, 101, 109, 66, 10, 253, 60,
150, 238, 221, 115, 162, 102, 62, 81, 102, 104, 123, 0, 11, 135, 34, 110, 1, 135, 237,
16, 115, 249, 69, 229, 130, 173, 252, 239, 22, 216, 90, 121, 142, 232, 198, 109, 219,
61, 184, 151, 91, 23, 208, 148, 2, 190, 237, 213, 217, 217, 112, 7, 16, 141, 178, 129,
96, 213, 248, 4, 12, 167, 68, 87, 98, 184, 31, 190, 127, 249, 217, 46, 10, 231, 111,
36, 242, 91, 51, 187, 230, 244, 74, 230, 30, 177, 4, 10, 203, 32, 4, 77, 62, 249, 18,
142, 212, 1, 48, 121, 91, 212, 189, 59, 65, 238, 202, 208, 102, 171, 101, 25, 129,
253, 228, 141, 247, 127, 55, 45, 195, 139, 159, 175, 221, 59, 239, 177, 139, 93, 163,
204, 60, 46, 176, 47, 158, 58, 65, 214, 18, 202, 173, 21, 145, 18, 115, 160, 95, 35,
185, 232, 56, 250, 175, 132, 157, 105, 132, 41, 239, 90, 30, 136, 121, 130, 54, 195,
212, 14, 96, 69, 34, 165, 68, 200, 242, 122, 122, 45, 184, 6, 99, 209, 108, 247, 202,
234, 86, 222, 64, 92, 178, 33, 90, 69, 178, 194, 85, 102, 181, 90, 193, 167, 72, 160,
112, 223, 200, 163, 42, 70, 149, 67, 208, 25, 238, 251, 71];
#[test]
fn test_sign() {
let key = include_bytes!("../../test/rsa.pem");
let private_key = RSA::private_key_from_pem(key).unwrap();
let pkey = PKey::from_rsa(private_key).unwrap();
let mut signer = Signer::new(Type::SHA256, &pkey).unwrap();
signer.update(INPUT).unwrap();
let result = signer.finish().unwrap();
assert_eq!(result, SIGNATURE);
}
#[test]
fn test_verify_ok() {
let key = include_bytes!("../../test/rsa.pem");
let private_key = RSA::private_key_from_pem(key).unwrap();
let pkey = PKey::from_rsa(private_key).unwrap();
let mut verifier = Verifier::new(Type::SHA256, &pkey).unwrap();
verifier.update(INPUT).unwrap();
verifier.finish(SIGNATURE).unwrap();
}
#[test]
fn test_verify_err() {
let key = include_bytes!("../../test/rsa.pem");
let private_key = RSA::private_key_from_pem(key).unwrap();
let pkey = PKey::from_rsa(private_key).unwrap();
let mut verifier = Verifier::new(Type::SHA256, &pkey).unwrap();
verifier.update(INPUT).unwrap();
verifier.update(b"foobar");
assert!(verifier.finish(SIGNATURE).is_err());
}
}