[openssl-users] unknown cipher?

Viktor Dukhovni openssl-users at dukhovni.org
Wed Aug 1 15:17:42 UTC 2018

> On Jul 31, 2018, at 5:08 PM, Henderson, Karl <KHenderson at 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


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