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path: root/openssl/src/crypto/rsa.rs
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-rw-r--r--openssl/src/crypto/rsa.rs303
1 files changed, 180 insertions, 123 deletions
diff --git a/openssl/src/crypto/rsa.rs b/openssl/src/crypto/rsa.rs
index 52b8590e..feb66a6f 100644
--- a/openssl/src/crypto/rsa.rs
+++ b/openssl/src/crypto/rsa.rs
@@ -1,14 +1,15 @@
use ffi;
use std::fmt;
-use ssl::error::{SslError, StreamError};
use std::ptr;
-use std::io::{self, Read, Write};
-use libc::c_int;
+use std::mem;
+use libc::{c_int, c_void, c_char, c_ulong};
-use bn::BigNum;
-use bio::MemBio;
-use crypto::HashTypeInternals;
+use bn::{BigNum, BigNumRef};
+use bio::{MemBio, MemBioSlice};
+use error::ErrorStack;
+use HashTypeInternals;
use crypto::hash;
+use crypto::util::{CallbackState, invoke_passwd_cb};
pub struct RSA(*mut ffi::RSA);
@@ -23,11 +24,13 @@ impl Drop for RSA {
impl RSA {
/// only useful for associating the key material directly with the key, it's safer to use
/// the supplied load and save methods for DER formatted keys.
- pub fn from_public_components(n: BigNum, e: BigNum) -> Result<RSA, SslError> {
+ pub fn from_public_components(n: BigNum, e: BigNum) -> Result<RSA, ErrorStack> {
unsafe {
let rsa = try_ssl_null!(ffi::RSA_new());
- (*rsa).n = n.into_raw();
- (*rsa).e = e.into_raw();
+ (*rsa).n = n.as_ptr();
+ (*rsa).e = e.as_ptr();
+ mem::forget(n);
+ mem::forget(e);
Ok(RSA(rsa))
}
}
@@ -40,35 +43,53 @@ impl RSA {
dp: BigNum,
dq: BigNum,
qi: BigNum)
- -> Result<RSA, SslError> {
+ -> Result<RSA, ErrorStack> {
unsafe {
let rsa = try_ssl_null!(ffi::RSA_new());
- (*rsa).n = n.into_raw();
- (*rsa).e = e.into_raw();
- (*rsa).d = d.into_raw();
- (*rsa).p = p.into_raw();
- (*rsa).q = q.into_raw();
- (*rsa).dmp1 = dp.into_raw();
- (*rsa).dmq1 = dq.into_raw();
- (*rsa).iqmp = qi.into_raw();
+ (*rsa).n = n.as_ptr();
+ (*rsa).e = e.as_ptr();
+ (*rsa).d = d.as_ptr();
+ (*rsa).p = p.as_ptr();
+ (*rsa).q = q.as_ptr();
+ (*rsa).dmp1 = dp.as_ptr();
+ (*rsa).dmq1 = dq.as_ptr();
+ (*rsa).iqmp = qi.as_ptr();
+ mem::forget(n);
+ mem::forget(e);
+ mem::forget(d);
+ mem::forget(p);
+ mem::forget(q);
+ mem::forget(dp);
+ mem::forget(dq);
+ mem::forget(qi);
Ok(RSA(rsa))
}
}
- /// the caller should assert that the rsa pointer is valid.
- pub unsafe fn from_raw(rsa: *mut ffi::RSA) -> RSA {
+ pub unsafe fn from_ptr(rsa: *mut ffi::RSA) -> RSA {
RSA(rsa)
}
- /// Reads an RSA private key from PEM formatted data.
- pub fn private_key_from_pem<R>(reader: &mut R) -> Result<RSA, SslError>
- where R: Read
- {
- let mut mem_bio = try!(MemBio::new());
- try!(io::copy(reader, &mut mem_bio).map_err(StreamError));
+ /// Generates a public/private key pair with the specified size.
+ ///
+ /// The public exponent will be 65537.
+ pub fn generate(bits: u32) -> Result<RSA, ErrorStack> {
+ unsafe {
+ let rsa = try_ssl_null!(ffi::RSA_new());
+ let rsa = RSA(rsa);
+ let e = try!(BigNum::new_from(ffi::RSA_F4 as c_ulong));
+
+ try_ssl!(ffi::RSA_generate_key_ex(rsa.0, bits as c_int, e.as_ptr(), ptr::null_mut()));
+ Ok(rsa)
+ }
+ }
+
+ /// Reads an RSA private key from PEM formatted data.
+ pub fn private_key_from_pem(buf: &[u8]) -> Result<RSA, ErrorStack> {
+ let mem_bio = try!(MemBioSlice::new(buf));
unsafe {
- let rsa = try_ssl_null!(ffi::PEM_read_bio_RSAPrivateKey(mem_bio.get_handle(),
+ let rsa = try_ssl_null!(ffi::PEM_read_bio_RSAPrivateKey(mem_bio.as_ptr(),
ptr::null_mut(),
None,
ptr::null_mut()));
@@ -76,40 +97,29 @@ impl RSA {
}
}
- /// Writes an RSA private key as unencrypted PEM formatted data
- pub fn private_key_to_pem<W>(&self, writer: &mut W) -> Result<(), SslError>
- where W: Write
+ /// Reads an RSA private key from PEM formatted data and supplies a password callback.
+ pub fn private_key_from_pem_cb<F>(buf: &[u8], pass_cb: F) -> Result<RSA, ErrorStack>
+ where F: FnOnce(&mut [c_char]) -> usize
{
- let mut mem_bio = try!(MemBio::new());
+ let mut cb = CallbackState::new(pass_cb);
+ let mem_bio = try!(MemBioSlice::new(buf));
- let result = unsafe {
- ffi::PEM_write_bio_RSAPrivateKey(mem_bio.get_handle(),
- self.0,
- ptr::null(),
- ptr::null_mut(),
- 0,
- None,
- ptr::null_mut())
- };
-
- if result == 1 {
- try!(io::copy(&mut mem_bio, writer).map_err(StreamError));
+ unsafe {
+ let cb_ptr = &mut cb as *mut _ as *mut c_void;
+ let rsa = try_ssl_null!(ffi::PEM_read_bio_RSAPrivateKey(mem_bio.as_ptr(),
+ ptr::null_mut(),
+ Some(invoke_passwd_cb::<F>),
+ cb_ptr));
- Ok(())
- } else {
- Err(SslError::OpenSslErrors(vec![]))
+ Ok(RSA(rsa))
}
}
/// Reads an RSA public key from PEM formatted data.
- pub fn public_key_from_pem<R>(reader: &mut R) -> Result<RSA, SslError>
- where R: Read
- {
- let mut mem_bio = try!(MemBio::new());
- try!(io::copy(reader, &mut mem_bio).map_err(StreamError));
-
+ pub fn public_key_from_pem(buf: &[u8]) -> Result<RSA, ErrorStack> {
+ let mem_bio = try!(MemBioSlice::new(buf));
unsafe {
- let rsa = try_ssl_null!(ffi::PEM_read_bio_RSA_PUBKEY(mem_bio.get_handle(),
+ let rsa = try_ssl_null!(ffi::PEM_read_bio_RSA_PUBKEY(mem_bio.as_ptr(),
ptr::null_mut(),
None,
ptr::null_mut()));
@@ -117,97 +127,127 @@ impl RSA {
}
}
- /// Writes an RSA public key as PEM formatted data
- pub fn public_key_to_pem<W>(&self, writer: &mut W) -> Result<(), SslError>
- where W: Write
- {
- let mut mem_bio = try!(MemBio::new());
+ /// Writes an RSA private key as unencrypted PEM formatted data
+ pub fn private_key_to_pem(&self) -> Result<Vec<u8>, ErrorStack> {
+ let mem_bio = try!(MemBio::new());
+
+ unsafe {
+ try_ssl!(ffi::PEM_write_bio_RSAPrivateKey(mem_bio.as_ptr(),
+ self.0,
+ ptr::null(),
+ ptr::null_mut(),
+ 0,
+ None,
+ ptr::null_mut()));
+ }
+ Ok(mem_bio.get_buf().to_owned())
+ }
- let result = unsafe { ffi::PEM_write_bio_RSA_PUBKEY(mem_bio.get_handle(), self.0) };
+ /// Writes an RSA public key as PEM formatted data
+ pub fn public_key_to_pem(&self) -> Result<Vec<u8>, ErrorStack> {
+ let mem_bio = try!(MemBio::new());
- if result == 1 {
- try!(io::copy(&mut mem_bio, writer).map_err(StreamError));
+ unsafe {
+ try_ssl!(ffi::PEM_write_bio_RSA_PUBKEY(mem_bio.as_ptr(), self.0))
+ };
- Ok(())
- } else {
- Err(SslError::OpenSslErrors(vec![]))
- }
+ Ok(mem_bio.get_buf().to_owned())
}
- pub fn size(&self) -> Result<u32, SslError> {
- if self.has_n() {
- unsafe { Ok(ffi::RSA_size(self.0) as u32) }
+ pub fn size(&self) -> Option<u32> {
+ if self.n().is_some() {
+ unsafe { Some(ffi::RSA_size(self.0) as u32) }
} else {
- Err(SslError::OpenSslErrors(vec![]))
+ None
}
}
- pub fn sign(&self, hash: hash::Type, message: &[u8]) -> Result<Vec<u8>, SslError> {
- let k_len = try!(self.size());
- let mut sig = vec![0;k_len as usize];
+ pub fn sign(&self, hash: hash::Type, message: &[u8]) -> Result<Vec<u8>, ErrorStack> {
+ let k_len = self.size().expect("RSA missing an n");
+ let mut sig = vec![0; k_len as usize];
let mut sig_len = k_len;
unsafe {
- let result = ffi::RSA_sign(hash.as_nid() as c_int,
- message.as_ptr(),
- message.len() as u32,
- sig.as_mut_ptr(),
- &mut sig_len,
- self.0);
+ try_ssl!(ffi::RSA_sign(hash.as_nid() as c_int,
+ message.as_ptr(),
+ message.len() as u32,
+ sig.as_mut_ptr(),
+ &mut sig_len,
+ self.0));
assert!(sig_len == k_len);
-
- if result == 1 {
- Ok(sig)
- } else {
- Err(SslError::OpenSslErrors(vec![]))
- }
+ Ok(sig)
}
}
- pub fn verify(&self, hash: hash::Type, message: &[u8], sig: &[u8]) -> Result<bool, SslError> {
+ pub fn verify(&self, hash: hash::Type, message: &[u8], sig: &[u8]) -> Result<(), ErrorStack> {
unsafe {
- let result = ffi::RSA_verify(hash.as_nid() as c_int,
- message.as_ptr(),
- message.len() as u32,
- sig.as_ptr(),
- sig.len() as u32,
- self.0);
-
- Ok(result == 1)
+ try_ssl!(ffi::RSA_verify(hash.as_nid() as c_int,
+ message.as_ptr(),
+ message.len() as u32,
+ sig.as_ptr(),
+ sig.len() as u32,
+ self.0));
}
+ Ok(())
}
pub fn as_ptr(&self) -> *mut ffi::RSA {
self.0
}
- // The following getters are unsafe, since BigNum::new_from_ffi fails upon null pointers
- pub fn n(&self) -> Result<BigNum, SslError> {
- unsafe { BigNum::new_from_ffi((*self.0).n) }
- }
-
- pub fn has_n(&self) -> bool {
- unsafe { !(*self.0).n.is_null() }
- }
-
- pub fn d(&self) -> Result<BigNum, SslError> {
- unsafe { BigNum::new_from_ffi((*self.0).d) }
+ pub fn n<'a>(&'a self) -> Option<BigNumRef<'a>> {
+ unsafe {
+ let n = (*self.0).n;
+ if n.is_null() {
+ None
+ } else {
+ Some(BigNumRef::from_ptr(n))
+ }
+ }
}
- pub fn e(&self) -> Result<BigNum, SslError> {
- unsafe { BigNum::new_from_ffi((*self.0).e) }
+ pub fn d<'a>(&self) -> Option<BigNumRef<'a>> {
+ unsafe {
+ let d = (*self.0).d;
+ if d.is_null() {
+ None
+ } else {
+ Some(BigNumRef::from_ptr(d))
+ }
+ }
}
- pub fn has_e(&self) -> bool {
- unsafe { !(*self.0).e.is_null() }
+ pub fn e<'a>(&'a self) -> Option<BigNumRef<'a>> {
+ unsafe {
+ let e = (*self.0).e;
+ if e.is_null() {
+ None
+ } else {
+ Some(BigNumRef::from_ptr(e))
+ }
+ }
}
- pub fn p(&self) -> Result<BigNum, SslError> {
- unsafe { BigNum::new_from_ffi((*self.0).p) }
+ pub fn p<'a>(&'a self) -> Option<BigNumRef<'a>> {
+ unsafe {
+ let p = (*self.0).p;
+ if p.is_null() {
+ None
+ } else {
+ Some(BigNumRef::from_ptr(p))
+ }
+ }
}
- pub fn q(&self) -> Result<BigNum, SslError> {
- unsafe { BigNum::new_from_ffi((*self.0).q) }
+ pub fn q<'a>(&'a self) -> Option<BigNumRef<'a>> {
+ unsafe {
+ let q = (*self.0).q;
+ if q.is_null() {
+ None
+ } else {
+ Some(BigNumRef::from_ptr(q))
+ }
+ }
}
}
@@ -219,8 +259,9 @@ impl fmt::Debug for RSA {
#[cfg(test)]
mod test {
- use std::fs::File;
use std::io::Write;
+ use libc::c_char;
+
use super::*;
use crypto::hash::*;
@@ -252,12 +293,12 @@ mod test {
#[test]
pub fn test_sign() {
- let mut buffer = File::open("test/rsa.pem").unwrap();
- let private_key = RSA::private_key_from_pem(&mut buffer).unwrap();
+ let key = include_bytes!("../../test/rsa.pem");
+ let private_key = RSA::private_key_from_pem(key).unwrap();
- let mut sha = Hasher::new(Type::SHA256);
+ let mut sha = Hasher::new(Type::SHA256).unwrap();
sha.write_all(&signing_input_rs256()).unwrap();
- let digest = sha.finish();
+ let digest = sha.finish().unwrap();
let result = private_key.sign(Type::SHA256, &digest).unwrap();
@@ -266,15 +307,31 @@ mod test {
#[test]
pub fn test_verify() {
- let mut buffer = File::open("test/rsa.pem.pub").unwrap();
- let public_key = RSA::public_key_from_pem(&mut buffer).unwrap();
+ let key = include_bytes!("../../test/rsa.pem.pub");
+ let public_key = RSA::public_key_from_pem(key).unwrap();
- let mut sha = Hasher::new(Type::SHA256);
+ let mut sha = Hasher::new(Type::SHA256).unwrap();
sha.write_all(&signing_input_rs256()).unwrap();
- let digest = sha.finish();
+ let digest = sha.finish().unwrap();
- let result = public_key.verify(Type::SHA256, &digest, &signature_rs256()).unwrap();
+ assert!(public_key.verify(Type::SHA256, &digest, &signature_rs256()).is_ok());
+ }
- assert!(result);
+ #[test]
+ pub fn test_password() {
+ let mut password_queried = false;
+ let key = include_bytes!("../../test/rsa-encrypted.pem");
+ RSA::private_key_from_pem_cb(key, |password| {
+ password_queried = true;
+ password[0] = b'm' as c_char;
+ password[1] = b'y' as c_char;
+ password[2] = b'p' as c_char;
+ password[3] = b'a' as c_char;
+ password[4] = b's' as c_char;
+ password[5] = b's' as c_char;
+ 6
+ }).unwrap();
+
+ assert!(password_queried);
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2026-03-12 03:54:11 +0000