Hi,

I need to have the same result while using :

 openssl dgst -sha256 -hmac "somestring"

But the server rejecting my generated hmac with the code below .

auto hmac = HMAC!SHA256("somestring".representation);
hmac.put(url.representation);
auto generatedHmac = hmac.finish();
string generatedHmacStr = std.digest.digest.toHexString(generatedHmac);

Saying generatedHmac is not correct.

Than I wanted to give a try with deimos-openssl like:

ubyte[32] hmac_sha256( string key, string data) {

       HMAC_CTX *ctx = new HMAC_CTX;
       HMAC_CTX_init(ctx);

       auto digest = HMAC(EVP_sha256(),
                          cast(void *) key,
                          cast(int) key.length,
                          cast(ubyte*) data,
                          cast(int) data.length,
                          null,null);
       ubyte[32] array = digest[0..32];
       return array;
}

But I am getting a linking error :

undefined reference to `_D6deimos7openssl3evp13env_md_ctx_st6__initZ'


My dependencies in dub.json file is like:

    "dependencies": {
        "openssl": "~>1.1.6+1.0.1g",
        "vibe-d": "~>0.8.1",
      }


I really want to solve linking error first. I tried installing openssl it didn't help. Any suggestions?

Regards
Erdem

On 12/08/2017 01:05 PM, kerdemdemir wrote:
> Hi,
>
> I need to have the same result while using :
>
>   openssl

Works for me as adapted from Phobos documentation:

import std.stdio;
import std.digest.hmac, std.digest.sha;
import std.string : representation;
void main() {
    auto hmac = HMAC!SHA256("key".representation);
    hmac.put("value".representation);
    foreach (m; hmac.finish()) {
        writef("%02x", m);
    }
    writeln();
}

Assuming the program is called 'deneme', the result is the same:

$ echo -n "value" | openssl dgst -sha256 -hmac "key" && ./deneme
(stdin)= 90fbfcf15e74a36b89dbdb2a721d9aecffdfdddc5c83e27f7592594f71932481
90fbfcf15e74a36b89dbdb2a721d9aecffdfdddc5c83e27f7592594f71932481

Ali