> On Jul 31, 2018, at 5:08 PM, Henderson, Karl <khender...@verisign.com> wrote:
> 
> When I type:
>  
> openssl ciphers -tls1_3 -stdname -V
>  
> I see this as one of the results:
>  
>           0x13,0x02 - TLS_AES_256_GCM_SHA384 - TLS_AES_256_GCM_SHA384  
> TLSv1.3 Kx=any      Au=any Enc=AESGCM(256) Mac=AEAD

This is a TLS cipher-suite.

> However, when I try to do a speed test on this algorithm
>  
> openssl speed -evp TLS_AES_256_GCM_SHA384

This command tests the performance of basic cryptographic algorithms supported
by the libcrypto EVP layer, such as AES, SHA256, RSA, ...

> speed: TLS_AES_256_GCM_SHA384 is an unknown cipher or digest
>  
> What am I missing?

TLS cipher-suites are from libssl, and are not EVP-layer cryptographic
algorithms.

-- 
        Viktor.

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