Commit 21afcf0b authored by Alex Page's avatar Alex Page
Browse files

bn: Add mod_sqrt

parent d7dae6fb

openssl-sys/src/handwritten/bn.rs

+7 −0
Original line number Diff line number Diff line
@@ -73,6 +73,13 @@ extern "C" { 
        m: *const BIGNUM,

        ctx: *mut BN_CTX,

    ) -> c_int;

    #[cfg(ossl110)]

    pub fn BN_mod_sqrt(

        ret: *mut BIGNUM,

        a: *const BIGNUM,

        p: *const BIGNUM,

        ctx: *mut BN_CTX,

    ) -> *mut BIGNUM;



    pub fn BN_mod_word(r: *const BIGNUM, w: BN_ULONG) -> BN_ULONG;

    pub fn BN_div_word(r: *mut BIGNUM, w: BN_ULONG) -> BN_ULONG;

openssl/src/bn.rs

+20 −0
Original line number Diff line number Diff line
@@ -639,6 +639,26 @@ impl BigNumRef { 
        }

    }



    /// Places into `self` the modular square root of `a` such that `self^2 = a (mod p)`

    #[corresponds(BN_mod_sqrt)]

    #[cfg(ossl110)]

    pub fn mod_sqrt(

        &mut self,

        a: &BigNumRef,

        p: &BigNumRef,

        ctx: &mut BigNumContextRef,

    ) -> Result<(), ErrorStack> {

        unsafe {

            cvt_p(ffi::BN_mod_sqrt(

                self.as_ptr(),

                a.as_ptr(),

                p.as_ptr(),

                ctx.as_ptr(),

            ))

            .map(|_| ())

        }

    }



    /// Places the result of `a^p` in `self`.

    #[corresponds(BN_exp)]

    pub fn exp(