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, 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, 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 { 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, 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 _ as _, signature.len()) != 1); Ok(()) } } } impl<'a> Write for Verifier<'a> { fn write(&mut self, buf: &[u8]) -> io::Result { try!(self.update(buf)); Ok(buf.len()) } fn flush(&mut self) -> io::Result<()> { Ok(()) } } #[cfg(test)] mod test { use serialize::hex::FromHex; use std::iter; 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").unwrap(); assert!(verifier.finish(SIGNATURE).is_err()); } fn test_hmac(ty: Type, tests: &[(Vec, Vec, Vec)]) { 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, Vec, Vec); 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(Type::MD5, &tests); } #[test] fn hmac_sha1() { // test vectors from RFC 2202 let tests: [(Vec, Vec, Vec); 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(Type::SHA1, &tests); } }