HMAC

[Martin Bonner]

> with OpenSSL deprecating most of the HMAC functions (c.f.
> /docs/man3.0/man3/HMAC_Init_ex.html (openssl.org)
> https://www.openssl.org/docs/man3.0/man3/HMAC_Init_ex.html
> what is the alternative approach to do that computation if you have
> multiple data arrays to do the computation over via HMAC_Update?

From the page you linked to:
"Applications should instead use EVP_MAC_CTX_new(3), EVP_MAC_CTX_free(3)
 EVP_MAC_init(3), EVP_MAC_update(3) and EVP_MAC_final(3)"

Specifically you can call EVP_MAC_update multiple times.

Martin Bonner
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