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<p class="MsoNormal"><span style="color:#1F497D">Dear OpenSSL users,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> I am reposting my previous mail with what exactly my intention since it older post might be confused.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> I have my custom provider which support for HSM encryption on AES, DES. When an application uses the custom provider, it has to pass the respective cryption mode to driver.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> Can someone tell me how the custom provider get the nid value (or the cryption mode) from OpenSSL library (pls correct me if this is not the correct way !) ? Any hint is highly appreciated.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I tried below way, not sure correct way or not…but not successful.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> <i>const EVP_CIPHER * evp = EVP_CIPHER_CTX_get0_cipher(custom_provider_ctx);<o:p></o:p></i></span></p>
<p class="MsoNormal"><i><span style="color:#1F497D"> int mode = EVP_CIPHER_get_nid(evp);<o:p></o:p></span></i></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Hareesh<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Hareesh Das Ulleri <br>
<b>Sent:</b> Friday, March 31, 2023 2:37 PM<br>
<b>To:</b> openssl-users@openssl.org<br>
<b>Subject:</b> Help needed: "setting OSSL_PARAM Param[] values"<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dear OpenSSL users,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> I have implemented a custom provider (OpenSSL 3.0.7) and its working when I hardcode with specific Cipher and blocksize in provider. I need to get this info from the application so that it can be settable in the custom provider. I have
the function implemented for OSSL_FUNC_cipher_gettable_params, … _get_ctx_params and _set_ctx_params
<b>etc</b> in my provider.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> I tested with openssl command line utility program (e.g. openssl enc -cipher -aes-256-ctr -in in.bin -out out.bin –K … -iv … -nopad). What I expect here or my understanding is openssl will pass or call the cipher operation parameters
function in the custom provider so that it can set these values internally.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> Any help will appreciate if someone can give hint on what is missing here or needed to set cipher operation parameters !<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Hareesh<o:p></o:p></p>
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