Use Rand_Seed on windows?
Hello Mailinglist, in the OpenSSL documentation is written that I should initialize with RAND_seed() before using RSA_public_encrypt() and RSA_generate_key_ex(). But I havent found any good examples that show how to do this. (For Windows) I found this example in the test folder over and over again. But it seems that this is only a dummy. static const char rnd_seed[] = string to make the random number generator think it has entropy; RAND_seed(rnd_seed, sizeof rnd_seed); /* or OAEP may fail */ What do you think if I use rand() from cstdlib.h to create a char* string and put it into RAND_seed(): const int SeedLen=100; char RandSeed[SeedLen]; srand((unsigned)time(NULL)); for (int i=0; iSeedLen; i++) RandSeed[i] = rand() % 256; Or is there a better way to set rand_seed? I cannot bother a user with key input or else. In some test applications I havent seen any rand_seed calls. So maybe it is not so important? Regards Martin -- GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
Re: Use Rand_Seed on windows?
On Mon, Sep 03, 2007, Martin Salo wrote: Hello Mailinglist, in the OpenSSL documentation is written that I should initialize with RAND_seed() before using RSA_public_encrypt() and RSA_generate_key_ex(). But I havent found any good examples that show how to do this. (For Windows) OpenSSL now uses several sources of entropy automatically on Windows so you shouldn't need to do this yourself. Steve. -- Dr Stephen N. Henson. Email, S/MIME and PGP keys: see homepage OpenSSL project core developer and freelance consultant. Funding needed! Details on homepage. Homepage: http://www.drh-consultancy.demon.co.uk __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
Re: Use Rand_Seed on windows?
Ok, thanks a lot :) Original-Nachricht Datum: Mon, 3 Sep 2007 15:02:49 +0200 Von: Dr. Stephen Henson [EMAIL PROTECTED] An: openssl-users@openssl.org Betreff: Re: Use Rand_Seed on windows? On Mon, Sep 03, 2007, Martin Salo wrote: Hello Mailinglist, in the OpenSSL documentation is written that I should initialize with RAND_seed() before using RSA_public_encrypt() and RSA_generate_key_ex(). But I havent found any good examples that show how to do this. (For Windows) OpenSSL now uses several sources of entropy automatically on Windows so you shouldn't need to do this yourself. Steve. -- Dr Stephen N. Henson. Email, S/MIME and PGP keys: see homepage OpenSSL project core developer and freelance consultant. Funding needed! Details on homepage. Homepage: http://www.drh-consultancy.demon.co.uk __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED] -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
