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authorSteven Fackler <[email protected]>2015-02-07 21:28:54 -0800
committerSteven Fackler <[email protected]>2015-02-07 21:30:05 -0800
commitec65b0c67b452539fded5e06cbb6ce1d165074e0 (patch)
treec50c22c2ce4ca095149c96a0f3a3b935b4012a5c /src/bn
parentFix deprecation warnings in openssl-sys (diff)
downloadrust-openssl-ec65b0c67b452539fded5e06cbb6ce1d165074e0.tar.xz
rust-openssl-ec65b0c67b452539fded5e06cbb6ce1d165074e0.zip
Move docs to this repo and auto build
Diffstat (limited to 'src/bn')
-rw-r--r--src/bn/mod.rs604
1 files changed, 0 insertions, 604 deletions
diff --git a/src/bn/mod.rs b/src/bn/mod.rs
deleted file mode 100644
index 3a5f231e..00000000
--- a/src/bn/mod.rs
+++ /dev/null
@@ -1,604 +0,0 @@
-use libc::{c_int, c_ulong, c_void};
-use std::ffi::{CString, c_str_to_bytes};
-use std::cmp::Ordering;
-use std::{fmt, ptr};
-
-use ffi;
-use ssl::error::SslError;
-
-pub struct BigNum(*mut ffi::BIGNUM);
-
-#[derive(Copy)]
-#[repr(C)]
-pub enum RNGProperty {
- MsbMaybeZero = -1,
- MsbOne = 0,
- TwoMsbOne = 1,
-}
-
-macro_rules! with_ctx(
- ($name:ident, $action:block) => ({
- let $name = ffi::BN_CTX_new();
- if ($name).is_null() {
- Err(SslError::get())
- } else {
- let r = $action;
- ffi::BN_CTX_free($name);
- r
- }
- });
-);
-
-macro_rules! with_bn(
- ($name:ident, $action:block) => ({
- let tmp = BigNum::new();
- match tmp {
- Ok($name) => {
- if $action {
- Ok($name)
- } else {
- Err(SslError::get())
- }
- },
- Err(err) => Err(err),
- }
- });
-);
-
-macro_rules! with_bn_in_ctx(
- ($name:ident, $ctx_name:ident, $action:block) => ({
- let tmp = BigNum::new();
- match tmp {
- Ok($name) => {
- let $ctx_name = ffi::BN_CTX_new();
- if ($ctx_name).is_null() {
- Err(SslError::get())
- } else {
- let r =
- if $action {
- Ok($name)
- } else {
- Err(SslError::get())
- };
- ffi::BN_CTX_free($ctx_name);
- r
- }
- },
- Err(err) => Err(err),
- }
- });
-);
-
-impl BigNum {
- pub fn new() -> Result<BigNum, SslError> {
- unsafe {
- ffi::init();
-
- let v = try_ssl_null!(ffi::BN_new());
- Ok(BigNum(v))
- }
- }
-
- pub fn new_from(n: u64) -> Result<BigNum, SslError> {
- BigNum::new().and_then(|v| unsafe {
- try_ssl!(ffi::BN_set_word(v.raw(), n as c_ulong));
- Ok(v)
- })
- }
-
- pub fn from_dec_str(s: &str) -> Result<BigNum, SslError> {
- BigNum::new().and_then(|v| unsafe {
- let c_str = CString::from_slice(s.as_bytes());
- try_ssl!(ffi::BN_dec2bn(v.raw_ptr(), c_str.as_ptr()));
- Ok(v)
- })
- }
-
- pub fn from_hex_str(s: &str) -> Result<BigNum, SslError> {
- BigNum::new().and_then(|v| unsafe {
- let c_str = CString::from_slice(s.as_bytes());
- try_ssl!(ffi::BN_hex2bn(v.raw_ptr(), c_str.as_ptr()));
- Ok(v)
- })
- }
-
- pub fn new_from_slice(n: &[u8]) -> Result<BigNum, SslError> {
- BigNum::new().and_then(|v| unsafe {
- try_ssl_null!(ffi::BN_bin2bn(n.as_ptr(), n.len() as c_int, v.raw()));
- Ok(v)
- })
- }
-
- pub fn checked_sqr(&self) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_sqr(r.raw(), self.raw(), ctx) == 1 })
- }
- }
-
- pub fn checked_nnmod(&self, n: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_nnmod(r.raw(), self.raw(), n.raw(), ctx) == 1 })
- }
- }
-
- pub fn checked_mod_add(&self, a: &BigNum, n: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_mod_add(r.raw(), self.raw(), a.raw(), n.raw(), ctx) == 1 })
- }
- }
-
- pub fn checked_mod_sub(&self, a: &BigNum, n: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_mod_sub(r.raw(), self.raw(), a.raw(), n.raw(), ctx) == 1 })
- }
- }
-
- pub fn checked_mod_mul(&self, a: &BigNum, n: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_mod_mul(r.raw(), self.raw(), a.raw(), n.raw(), ctx) == 1 })
- }
- }
-
- pub fn checked_mod_sqr(&self, n: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_mod_sqr(r.raw(), self.raw(), n.raw(), ctx) == 1 })
- }
- }
-
- pub fn checked_exp(&self, p: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_exp(r.raw(), self.raw(), p.raw(), ctx) == 1 })
- }
- }
-
- pub fn checked_mod_exp(&self, p: &BigNum, n: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_mod_exp(r.raw(), self.raw(), p.raw(), n.raw(), ctx) == 1 })
- }
- }
-
- pub fn checked_mod_inv(&self, n: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { !ffi::BN_mod_inverse(r.raw(), self.raw(), n.raw(), ctx).is_null() })
- }
- }
-
- pub fn add_word(&mut self, w: c_ulong) -> Result<(), SslError> {
- unsafe {
- if ffi::BN_add_word(self.raw(), w) == 1 {
- Ok(())
- } else {
- Err(SslError::get())
- }
- }
- }
-
- pub fn sub_word(&mut self, w: c_ulong) -> Result<(), SslError> {
- unsafe {
- if ffi::BN_sub_word(self.raw(), w) == 1 {
- Ok(())
- } else {
- Err(SslError::get())
- }
- }
- }
-
- pub fn mul_word(&mut self, w: c_ulong) -> Result<(), SslError> {
- unsafe {
- if ffi::BN_mul_word(self.raw(), w) == 1 {
- Ok(())
- } else {
- Err(SslError::get())
- }
- }
- }
-
- pub fn div_word(&mut self, w: c_ulong) -> Result<c_ulong, SslError> {
- unsafe {
- let result = ffi::BN_div_word(self.raw(), w);
- if result != -1 as c_ulong {
- Ok(result)
- } else {
- Err(SslError::get())
- }
- }
- }
-
- pub fn mod_word(&self, w: c_ulong) -> Result<c_ulong, SslError> {
- unsafe {
- let result = ffi::BN_mod_word(self.raw(), w);
- if result != -1 as c_ulong {
- Ok(result)
- } else {
- Err(SslError::get())
- }
- }
- }
-
- pub fn checked_gcd(&self, a: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_gcd(r.raw(), self.raw(), a.raw(), ctx) == 1 })
- }
- }
-
- pub fn checked_generate_prime(bits: i32, safe: bool, add: Option<&BigNum>, rem: Option<&BigNum>) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, {
- let add_arg = add.map(|a| a.raw()).unwrap_or(ptr::null_mut());
- let rem_arg = rem.map(|r| r.raw()).unwrap_or(ptr::null_mut());
-
- ffi::BN_generate_prime_ex(r.raw(), bits as c_int, safe as c_int, add_arg, rem_arg, ptr::null()) == 1
- })
- }
- }
-
- pub fn is_prime(&self, checks: i32) -> Result<bool, SslError> {
- unsafe {
- with_ctx!(ctx, {
- Ok(ffi::BN_is_prime_ex(self.raw(), checks as c_int, ctx, ptr::null()) == 1)
- })
- }
- }
-
- pub fn is_prime_fast(&self, checks: i32, do_trial_division: bool) -> Result<bool, SslError> {
- unsafe {
- with_ctx!(ctx, {
- Ok(ffi::BN_is_prime_fasttest_ex(self.raw(), checks as c_int, ctx, do_trial_division as c_int, ptr::null()) == 1)
- })
- }
- }
-
- pub fn checked_new_random(bits: i32, prop: RNGProperty, odd: bool) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_rand(r.raw(), bits as c_int, prop as c_int, odd as c_int) == 1 })
- }
- }
-
- pub fn checked_new_pseudo_random(bits: i32, prop: RNGProperty, odd: bool) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_pseudo_rand(r.raw(), bits as c_int, prop as c_int, odd as c_int) == 1 })
- }
- }
-
- pub fn checked_rand_in_range(&self) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_rand_range(r.raw(), self.raw()) == 1 })
- }
- }
-
- pub fn checked_pseudo_rand_in_range(&self) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_pseudo_rand_range(r.raw(), self.raw()) == 1 })
- }
- }
-
- pub fn set_bit(&mut self, n: i32) -> Result<(), SslError> {
- unsafe {
- if ffi::BN_set_bit(self.raw(), n as c_int) == 1 {
- Ok(())
- } else {
- Err(SslError::get())
- }
- }
- }
-
- pub fn clear_bit(&mut self, n: i32) -> Result<(), SslError> {
- unsafe {
- if ffi::BN_clear_bit(self.raw(), n as c_int) == 1 {
- Ok(())
- } else {
- Err(SslError::get())
- }
- }
- }
-
- pub fn is_bit_set(&self, n: i32) -> bool {
- unsafe {
- ffi::BN_is_bit_set(self.raw(), n as c_int) == 1
- }
- }
-
- pub fn mask_bits(&mut self, n: i32) -> Result<(), SslError> {
- unsafe {
- if ffi::BN_mask_bits(self.raw(), n as c_int) == 1 {
- Ok(())
- } else {
- Err(SslError::get())
- }
- }
- }
-
- pub fn checked_shl1(&self) -> Result<BigNum, SslError> {
- unsafe {
- with_bn!(r, { ffi::BN_lshift1(r.raw(), self.raw()) == 1 })
- }
- }
-
- pub fn checked_shr1(&self) -> Result<BigNum, SslError> {
- unsafe {
- with_bn!(r, { ffi::BN_rshift1(r.raw(), self.raw()) == 1 })
- }
- }
-
- pub fn checked_add(&self, a: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn!(r, { ffi::BN_add(r.raw(), self.raw(), a.raw()) == 1 })
- }
- }
-
- pub fn checked_sub(&self, a: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn!(r, { ffi::BN_sub(r.raw(), self.raw(), a.raw()) == 1 })
- }
- }
-
- pub fn checked_mul(&self, a: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_mul(r.raw(), self.raw(), a.raw(), ctx) == 1 })
- }
- }
-
- pub fn checked_div(&self, a: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_div(r.raw(), ptr::null_mut(), self.raw(), a.raw(), ctx) == 1 })
- }
- }
-
- pub fn checked_mod(&self, a: &BigNum) -> Result<BigNum, SslError> {
- unsafe {
- with_bn_in_ctx!(r, ctx, { ffi::BN_div(ptr::null_mut(), r.raw(), self.raw(), a.raw(), ctx) == 1 })
- }
- }
-
- pub fn checked_shl(&self, a: &i32) -> Result<BigNum, SslError> {
- unsafe {
- with_bn!(r, { ffi::BN_lshift(r.raw(), self.raw(), *a as c_int) == 1 })
- }
- }
-
- pub fn checked_shr(&self, a: &i32) -> Result<BigNum, SslError> {
- unsafe {
- with_bn!(r, { ffi::BN_rshift(r.raw(), self.raw(), *a as c_int) == 1 })
- }
- }
-
- pub fn negate(&mut self) {
- unsafe {
- ffi::BN_set_negative(self.raw(), !self.is_negative() as c_int)
- }
- }
-
- pub fn abs_cmp(&self, oth: BigNum) -> Ordering {
- unsafe {
- let res = ffi::BN_ucmp(self.raw(), oth.raw()) as i32;
- if res < 0 {
- Ordering::Less
- } else if res > 0 {
- Ordering::Greater
- } else {
- Ordering::Equal
- }
- }
- }
-
- pub fn is_negative(&self) -> bool {
- unsafe {
- (*self.raw()).neg == 1
- }
- }
-
- pub fn num_bits(&self) -> i32 {
- unsafe {
- ffi::BN_num_bits(self.raw()) as i32
- }
- }
-
- pub fn num_bytes(&self) -> i32 {
- (self.num_bits() + 7) / 8
- }
-
- unsafe fn raw(&self) -> *mut ffi::BIGNUM {
- let BigNum(n) = *self;
- n
- }
-
- unsafe fn raw_ptr(&self) -> *const *mut ffi::BIGNUM {
- let BigNum(ref n) = *self;
- n
- }
-
- pub fn to_vec(&self) -> Vec<u8> {
- let size = self.num_bytes() as usize;
- let mut v = Vec::with_capacity(size);
- unsafe {
- ffi::BN_bn2bin(self.raw(), v.as_mut_ptr());
- v.set_len(size);
- }
- v
- }
-
- pub fn to_dec_str(&self) -> String {
- unsafe {
- let buf = ffi::BN_bn2dec(self.raw());
- assert!(!buf.is_null());
- let str = String::from_utf8(c_str_to_bytes(&buf).to_vec()).unwrap();
- ffi::CRYPTO_free(buf as *mut c_void);
- str
- }
- }
-
- pub fn to_hex_str(&self) -> String {
- unsafe {
- let buf = ffi::BN_bn2hex(self.raw());
- assert!(!buf.is_null());
- let str = String::from_utf8(c_str_to_bytes(&buf).to_vec()).unwrap();
- ffi::CRYPTO_free(buf as *mut c_void);
- str
- }
- }
-}
-
-impl fmt::Debug for BigNum {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- write!(f, "{}", self.to_dec_str())
- }
-}
-
-impl Eq for BigNum { }
-impl PartialEq for BigNum {
- fn eq(&self, oth: &BigNum) -> bool {
- unsafe {
- ffi::BN_cmp(self.raw(), oth.raw()) == 0
- }
- }
-}
-
-impl Ord for BigNum {
- fn cmp(&self, oth: &BigNum) -> Ordering {
- self.partial_cmp(oth).unwrap()
- }
-}
-
-impl PartialOrd for BigNum {
- fn partial_cmp(&self, oth: &BigNum) -> Option<Ordering> {
- unsafe {
- let v = ffi::BN_cmp(self.raw(), oth.raw());
- let ret =
- if v == 0 {
- Ordering::Equal
- } else if v < 0 {
- Ordering::Less
- } else {
- Ordering::Greater
- };
- Some(ret)
- }
- }
-}
-
-impl Drop for BigNum {
- fn drop(&mut self) {
- unsafe {
- if !self.raw().is_null() {
- ffi::BN_clear_free(self.raw());
- }
- }
- }
-}
-
-pub mod unchecked {
- use std::ops::{Add, Div, Mul, Neg, Rem, Shl, Shr, Sub};
- use ffi;
- use super::{BigNum};
-
- impl<'a> Add<&'a BigNum> for &'a BigNum {
- type Output = BigNum;
-
- fn add(self, oth: &'a BigNum) -> BigNum {
- self.checked_add(oth).unwrap()
- }
- }
-
- impl<'a> Sub<&'a BigNum> for &'a BigNum {
- type Output = BigNum;
-
- fn sub(self, oth: &'a BigNum) -> BigNum {
- self.checked_sub(oth).unwrap()
- }
- }
-
- impl<'a> Mul<&'a BigNum> for &'a BigNum {
- type Output = BigNum;
-
- fn mul(self, oth: &'a BigNum) -> BigNum {
- self.checked_mul(oth).unwrap()
- }
- }
-
- impl<'a> Div<&'a BigNum> for &'a BigNum {
- type Output = BigNum;
-
- fn div(self, oth: &'a BigNum) -> BigNum {
- self.checked_div(oth).unwrap()
- }
- }
-
- impl<'a> Rem<&'a BigNum> for &'a BigNum {
- type Output = BigNum;
-
- fn rem(self, oth: &'a BigNum) -> BigNum {
- self.checked_mod(oth).unwrap()
- }
- }
-
- impl<'a> Shl<i32> for &'a BigNum {
- type Output = BigNum;
-
- fn shl(self, n: i32) -> BigNum {
- self.checked_shl(&n).unwrap()
- }
- }
-
- impl<'a> Shr<i32> for &'a BigNum {
- type Output = BigNum;
-
- fn shr(self, n: i32) -> BigNum {
- self.checked_shr(&n).unwrap()
- }
- }
-
- impl Clone for BigNum {
- fn clone(&self) -> BigNum {
- unsafe {
- let r = ffi::BN_dup(self.raw());
- if r.is_null() {
- panic!("Unexpected null pointer from BN_dup(..)")
- } else {
- BigNum(r)
- }
- }
- }
- }
-
- impl Neg for BigNum {
- type Output = BigNum;
-
- fn neg(self) -> BigNum {
- let mut n = self.clone();
- n.negate();
- n
- }
- }
-}
-
-#[cfg(test)]
-mod tests {
- use bn::BigNum;
-
- #[test]
- fn test_to_from_slice() {
- let v0 = BigNum::new_from(10203004_u64).unwrap();
- let vec = v0.to_vec();
- let v1 = BigNum::new_from_slice(vec.as_slice()).unwrap();
-
- assert!(v0 == v1);
- }
-
- #[test]
- fn test_negation() {
- let a = BigNum::new_from(909829283_u64).unwrap();
-
- assert!(!a.is_negative());
- assert!((-a).is_negative());
- }
-
-
- #[test]
- fn test_prime_numbers() {
- let a = BigNum::new_from(19029017_u64).unwrap();
- let p = BigNum::checked_generate_prime(128, true, None, Some(&a)).unwrap();
-
- assert!(p.is_prime(100).unwrap());
- assert!(p.is_prime_fast(100, true).unwrap());
- }
-}