From: Bodo Moeller <[EMAIL PROTECTED]> moeller> The BN_mod_exp functions can be constified. The worst that moeller> can happen is that they'll have to copy the number that is to moeller> be exponentiated (the BN_CTX can be used for this). That's a useful solution (copying arguments at that level, that is)... moeller> Constifying just the BN_mod_exp's should be enough for a lot of that. moeller> If necessary, we can still add a constified variant of BN_mul that moeller> copies its arguments or uses a multiplication algorithm that does not moeller> require expansion. (You certainly don't want an implicit BIGNUM moeller> expansion to happen when sharing constants between threads. moeller> Sure, race conditions can be very interesting, but still I don't like moeller> to have them in my programs :-) Only problem with BN_mul is that copying of the argument is exactly what the current implementation does, and only when absolutely needed, and that gave a 15% performance decrease. I feel like I'm in the middle of a catch 22 here... -- Richard Levitte \ Spannv�gen 38, II \ [EMAIL PROTECTED] Chairman@Stacken \ S-168 35 BROMMA \ T: +46-8-26 52 47 Redakteur@Stacken \ SWEDEN \ or +46-709-50 36 10 Procurator Odiosus Ex Infernis -- [EMAIL PROTECTED] Member of the OpenSSL development team: http://www.openssl.org/ Software Engineer, Celo Communications: http://www.celocom.com/ Unsolicited commercial email is subject to an archival fee of $400. See <http://www.stacken.kth.se/~levitte/mail/> for more info. ______________________________________________________________________ OpenSSL Project http://www.openssl.org Development Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]
Re: cvs commit: openssl/crypto/bn bn.h bn_exp.cbn_exp2.cbn_gcd.cbn_lib.c bn_mont.c bn_mul.c bn_prime.c bn_recp.cbn_shift.cbn_sqr.cbntest.c
Richard Levitte - VMS Whacker Sat, 11 Nov 2000 09:30:22 -0800
- Re: cvs commit: openssl/crypto/bn bn.h bn_ex... Ulf Moeller
- Re: cvs commit: openssl/crypto/bn bn.h ... Paul D. Smith
- Re: cvs commit: openssl/crypto/bn bn.h bn_ex... Rich Salz
- Re: cvs commit: openssl/crypto/bn bn.h bn_ex... Rich Salz
- Re: cvs commit: openssl/crypto/bn bn.h ... Ben Laurie
- Re: cvs commit: openssl/crypto/bn bn.h ... Paul D. Smith
- Re: cvs commit: openssl/crypto/bn bn.h bn_ex... Rich Salz
- Re: cvs commit: openssl/crypto/bn bn.h bn_ex... Ben Laurie
- Re: cvs commit: openssl/crypto/bn bn.h bn_ex... Ben Laurie
- Re: cvs commit: openssl/crypto/bn bn.h bn_ex... Ben Laurie
- Re: cvs commit: openssl/crypto/bn bn.h bn_ex... Richard Levitte - VMS Whacker
- Re: cvs commit: openssl/crypto/bn bn.h ... Bodo Moeller
