Re: [openssl-users] OpenSSL RSA engine - RSA verify failure

Hi Uri Blumenthal, I hace started from the Intel RSAX engine, and I just wanted to use my own implementation of the rsa modular exponentiation. This project that I am working on intends to use a CUDA based implementation for modular computation. In order to post a working example here, I just

Re: [openssl-users] OpenSSL RSA engine - RSA verify failure

Not sure I understand what you’re doing. But compiling/building eng_rsax.c (provided by Intel) with the only mod being addition of dynamic bind, produces the following result: $ openssl engine rsax -t (rsax) RSAX engine support [ available ] $ sync $ openssl speed rsa512 -engine rsax engine

[openssl-users] OpenSSL RSA engine - RSA verify failure

Hi. I am trying to build an OpenSSL RSA engine and the first step is to use the "BN_mod_exp_mont" for the RSA modular exponentiation function, in RSA_METHOD structure. ***BEGINNING OF eng_rsax_test.c FILE*** / #include #include #include #include #include #include #ifndef OPENSSL_NO_RSA

[openssl-users] Fwd: undefined symbol: EC_KEY_new_by_curve_name

Hi, I'm trying to compile httpd 2.4.18 with openssl-1.0.2g(with openssl-fips-2.0.12) on 64-bit RHEL machine. I'm could compile and get it(httpd) running in http mode and while i'm trying to run it in HTTPS mode, server is unable to start saying "httpd: Syntax error on line 128 of

Re: [openssl-users] Is SHA hashing algorithm reversable?

Hi, I always use like this Hash ( salt + password ) You can use like this also Hash ( hash(salt) + password ) regards, James On Tue, Apr 5, 2016 at 1:52 PM, Sugumar wrote: > Hello, > > Ya you are correct James. > But my doubt is what is the best method to hash the password

Re: [openssl-users] CMS with Symmetric key

On Mon, Apr 04, 2016, Abe Racioppo wrote: > Hey guys, > > I'm trying to use the CMS operations in libcrypto but with a symmetric key > encryption key instead of x509. > > I'm thinking I want to use a combination of > > CMS_RecipientInfo_set0_pkey, > SMIME_write_CMS, > and >

Re: [openssl-users] Is SHA hashing algorithm reversable?

Hello, Ya you are correct James. But my doubt is what is the best method to hash the password securely with salt. I mean which method is preferred by openssl, HashValue = Hash(password + salt). HashValue = Hash( Hash(password) + salt). or something else? HashValue = Hash(password) + Hash(salt).

Re: [openssl-users] Is SHA hashing algorithm reversable?

Hello Sugumar, There are sites that store the commonly used strings and hashed strings. For example for hello sha2 hash is this 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824 If you copy paste this in google, you would see hello they dont do reverse of this hash but they hashed

Re: [openssl-users] Is SHA hashing algorithm reversable?

Thanks for all the information provided. Really its very nice information. And one more question, if i am using a salt with the password for computing a hash value i need to store the salt for future reference and what about the scenario when attacker gets that salt and hash. That time it may be