diff options
Diffstat (limited to 'openssl/src/crypto/sign.rs')
| -rw-r--r-- | openssl/src/crypto/sign.rs | 397 |
1 files changed, 0 insertions, 397 deletions
diff --git a/openssl/src/crypto/sign.rs b/openssl/src/crypto/sign.rs deleted file mode 100644 index 41009149..00000000 --- a/openssl/src/crypto/sign.rs +++ /dev/null @@ -1,397 +0,0 @@ -//! Message signatures. -//! -//! The `Signer` allows for the computation of cryptographic signatures of -//! data given a private key. The `Verifier` can then be used with the -//! corresponding public key to verify the integrity and authenticity of that -//! data given the signature. -//! -//! # Examples -//! -//! Sign and verify data given an RSA keypair: -//! -//! ```rust -//! use openssl::crypto::sign::{Signer, Verifier}; -//! use openssl::crypto::rsa::RSA; -//! use openssl::crypto::pkey::PKey; -//! use openssl::crypto::hash::MessageDigest; -//! -//! // Generate a keypair -//! let keypair = RSA::generate(2048).unwrap(); -//! let keypair = PKey::from_rsa(keypair).unwrap(); -//! -//! let data = b"hello, world!"; -//! let data2 = b"hola, mundo!"; -//! -//! // Sign the data -//! let mut signer = Signer::new(MessageDigest::sha256(), &keypair).unwrap(); -//! signer.update(data).unwrap(); -//! signer.update(data2).unwrap(); -//! let signature = signer.finish().unwrap(); -//! -//! // Verify the data -//! let mut verifier = Verifier::new(MessageDigest::sha256(), &keypair).unwrap(); -//! verifier.update(data).unwrap(); -//! verifier.update(data2).unwrap(); -//! assert!(verifier.finish(&signature).unwrap()); -//! ``` -//! -//! Compute an HMAC (note that `Verifier` cannot be used with HMACs): -//! -//! ```rust -//! use openssl::crypto::sign::Signer; -//! use openssl::crypto::pkey::PKey; -//! use openssl::crypto::hash::MessageDigest; -//! -//! // Create a PKey -//! let key = PKey::hmac(b"my secret").unwrap(); -//! -//! let data = b"hello, world!"; -//! let data2 = b"hola, mundo!"; -//! -//! // Compute the HMAC -//! let mut signer = Signer::new(MessageDigest::sha256(), &key).unwrap(); -//! signer.update(data).unwrap(); -//! signer.update(data2).unwrap(); -//! let hmac = signer.finish().unwrap(); -//! ``` -use ffi; -use std::io::{self, Write}; -use std::marker::PhantomData; -use std::ptr; - -use {cvt, cvt_p}; -use crypto::hash::MessageDigest; -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_: MessageDigest, pkey: &'a PKey) -> Result<Signer<'a>, ErrorStack> { - unsafe { - ffi::init(); - - let ctx = try!(cvt_p(EVP_MD_CTX_new())); - let r = ffi::EVP_DigestSignInit(ctx, - ptr::null_mut(), - type_.as_ptr(), - 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 { - cvt(ffi::EVP_DigestUpdate(self.0, buf.as_ptr() as *const _, buf.len())).map(|_| ()) - } - } - - pub fn finish(&self) -> Result<Vec<u8>, ErrorStack> { - unsafe { - let mut len = 0; - try!(cvt(ffi::EVP_DigestSignFinal(self.0, ptr::null_mut(), &mut len))); - let mut buf = vec![0; len]; - try!(cvt(ffi::EVP_DigestSignFinal(self.0, buf.as_mut_ptr() as *mut _, &mut len))); - // The advertised length is not always equal to the real length for things like DSA - buf.truncate(len); - 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_: MessageDigest, pkey: &'a PKey) -> Result<Verifier<'a>, ErrorStack> { - unsafe { - ffi::init(); - - let ctx = try!(cvt_p(EVP_MD_CTX_new())); - let r = ffi::EVP_DigestVerifyInit(ctx, - ptr::null_mut(), - type_.as_ptr(), - 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 { - cvt(ffi::EVP_DigestUpdate(self.0, buf.as_ptr() as *const _, buf.len())).map(|_| ()) - } - } - - pub fn finish(&self, signature: &[u8]) -> Result<bool, ErrorStack> { - unsafe { - let r = EVP_DigestVerifyFinal(self.0, - signature.as_ptr() as *const _, - signature.len()); - match r { - 1 => Ok(true), - 0 => { - ErrorStack::get(); // discard error stack - Ok(false) - } - _ => Err(ErrorStack::get()), - } - } - } -} - -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(not(ossl101))] -use ffi::EVP_DigestVerifyFinal; - -#[cfg(ossl101)] -#[allow(bad_style)] -unsafe fn EVP_DigestVerifyFinal(ctx: *mut ffi::EVP_MD_CTX, - sigret: *const ::libc::c_uchar, - siglen: ::libc::size_t) -> ::libc::c_int { - ffi::EVP_DigestVerifyFinal(ctx, sigret as *mut _, siglen) -} - -#[cfg(test)] -mod test { - use serialize::hex::FromHex; - use std::iter; - - use crypto::hash::MessageDigest; - use crypto::sign::{Signer, Verifier}; - use crypto::rsa::RSA; - use crypto::dsa::DSA; - 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 rsa_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(MessageDigest::sha256(), &pkey).unwrap(); - signer.update(INPUT).unwrap(); - let result = signer.finish().unwrap(); - - assert_eq!(result, SIGNATURE); - } - - #[test] - fn rsa_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(MessageDigest::sha256(), &pkey).unwrap(); - verifier.update(INPUT).unwrap(); - assert!(verifier.finish(SIGNATURE).unwrap()); - } - - #[test] - fn rsa_verify_invalid() { - 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(MessageDigest::sha256(), &pkey).unwrap(); - verifier.update(INPUT).unwrap(); - verifier.update(b"foobar").unwrap(); - assert!(!verifier.finish(SIGNATURE).unwrap()); - } - - #[test] - pub fn dsa_sign_verify() { - let input: Vec<u8> = (0..25).cycle().take(1024).collect(); - - let private_key = { - let key = include_bytes!("../../test/dsa.pem"); - PKey::from_dsa(DSA::private_key_from_pem(key).unwrap()).unwrap() - }; - - let public_key = { - let key = include_bytes!("../../test/dsa.pem.pub"); - PKey::from_dsa(DSA::public_key_from_pem(key).unwrap()).unwrap() - }; - - let mut signer = Signer::new(MessageDigest::sha1(), &private_key).unwrap(); - signer.update(&input).unwrap(); - let sig = signer.finish().unwrap(); - - let mut verifier = Verifier::new(MessageDigest::sha1(), &public_key).unwrap(); - verifier.update(&input).unwrap(); - assert!(verifier.finish(&sig).unwrap()); - } - - #[test] - pub fn dsa_sign_verify_fail() { - let input: Vec<u8> = (0..25).cycle().take(1024).collect(); - - let private_key = { - let key = include_bytes!("../../test/dsa.pem"); - PKey::from_dsa(DSA::private_key_from_pem(key).unwrap()).unwrap() - }; - - let public_key = { - let key = include_bytes!("../../test/dsa.pem.pub"); - PKey::from_dsa(DSA::public_key_from_pem(key).unwrap()).unwrap() - }; - - let mut signer = Signer::new(MessageDigest::sha1(), &private_key).unwrap(); - signer.update(&input).unwrap(); - let mut sig = signer.finish().unwrap(); - sig[0] -= 1; - - let mut verifier = Verifier::new(MessageDigest::sha1(), &public_key).unwrap(); - verifier.update(&input).unwrap(); - match verifier.finish(&sig) { - Ok(true) => panic!("unexpected success"), - Ok(false) | Err(_) => {}, - } - } - - fn test_hmac(ty: MessageDigest, tests: &[(Vec<u8>, Vec<u8>, Vec<u8>)]) { - for &(ref key, ref data, ref res) in tests.iter() { - let pkey = PKey::hmac(key).unwrap(); - let mut signer = Signer::new(ty, &pkey).unwrap(); - signer.update(data).unwrap(); - assert_eq!(signer.finish().unwrap(), *res); - } - } - - #[test] - fn hmac_md5() { - // test vectors from RFC 2202 - let tests: [(Vec<u8>, Vec<u8>, Vec<u8>); 7] = - [(iter::repeat(0x0b_u8).take(16).collect(), - b"Hi There".to_vec(), - "9294727a3638bb1c13f48ef8158bfc9d".from_hex().unwrap()), - (b"Jefe".to_vec(), - b"what do ya want for nothing?".to_vec(), - "750c783e6ab0b503eaa86e310a5db738".from_hex().unwrap()), - (iter::repeat(0xaa_u8).take(16).collect(), - iter::repeat(0xdd_u8).take(50).collect(), - "56be34521d144c88dbb8c733f0e8b3f6".from_hex().unwrap()), - ("0102030405060708090a0b0c0d0e0f10111213141516171819".from_hex().unwrap(), - iter::repeat(0xcd_u8).take(50).collect(), - "697eaf0aca3a3aea3a75164746ffaa79".from_hex().unwrap()), - (iter::repeat(0x0c_u8).take(16).collect(), - b"Test With Truncation".to_vec(), - "56461ef2342edc00f9bab995690efd4c".from_hex().unwrap()), - (iter::repeat(0xaa_u8).take(80).collect(), - b"Test Using Larger Than Block-Size Key - Hash Key First".to_vec(), - "6b1ab7fe4bd7bf8f0b62e6ce61b9d0cd".from_hex().unwrap()), - (iter::repeat(0xaa_u8).take(80).collect(), - b"Test Using Larger Than Block-Size Key \ - and Larger Than One Block-Size Data" - .to_vec(), - "6f630fad67cda0ee1fb1f562db3aa53e".from_hex().unwrap())]; - - test_hmac(MessageDigest::md5(), &tests); - } - - #[test] - fn hmac_sha1() { - // test vectors from RFC 2202 - let tests: [(Vec<u8>, Vec<u8>, Vec<u8>); 7] = - [(iter::repeat(0x0b_u8).take(20).collect(), - b"Hi There".to_vec(), - "b617318655057264e28bc0b6fb378c8ef146be00".from_hex().unwrap()), - (b"Jefe".to_vec(), - b"what do ya want for nothing?".to_vec(), - "effcdf6ae5eb2fa2d27416d5f184df9c259a7c79".from_hex().unwrap()), - (iter::repeat(0xaa_u8).take(20).collect(), - iter::repeat(0xdd_u8).take(50).collect(), - "125d7342b9ac11cd91a39af48aa17b4f63f175d3".from_hex().unwrap()), - ("0102030405060708090a0b0c0d0e0f10111213141516171819".from_hex().unwrap(), - iter::repeat(0xcd_u8).take(50).collect(), - "4c9007f4026250c6bc8414f9bf50c86c2d7235da".from_hex().unwrap()), - (iter::repeat(0x0c_u8).take(20).collect(), - b"Test With Truncation".to_vec(), - "4c1a03424b55e07fe7f27be1d58bb9324a9a5a04".from_hex().unwrap()), - (iter::repeat(0xaa_u8).take(80).collect(), - b"Test Using Larger Than Block-Size Key - Hash Key First".to_vec(), - "aa4ae5e15272d00e95705637ce8a3b55ed402112".from_hex().unwrap()), - (iter::repeat(0xaa_u8).take(80).collect(), - b"Test Using Larger Than Block-Size Key \ - and Larger Than One Block-Size Data" - .to_vec(), - "e8e99d0f45237d786d6bbaa7965c7808bbff1a91".from_hex().unwrap())]; - - test_hmac(MessageDigest::sha1(), &tests); - } -} |