[openssl-users] Changing IV in EVP API?

Dr. Stephen Henson steve at openssl.org
Mon May 2 19:16:28 UTC 2016

On Mon, May 02, 2016, Jakob Bohm wrote:

> While trying to convert some 3rd party code from direct calls
> to libcrypto functions to using the EVP API, I have run into
> a problem.
> I cannot find the EVP call to change the IV without changing
> (and reexpanding) the key.

Try calling the EVP_*Init() function with all the parameters NULL except the
IV and the EVP_CIPHER_CTX parameter.

Dr Stephen N. Henson. OpenSSL project core developer.
Commercial tech support now available see: http://www.openssl.org

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