1EVP_MD-SHAKE(7ossl)                 OpenSSL                EVP_MD-SHAKE(7ossl)
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NAME

6       EVP_MD-SHAKE, EVP_MD-KECCAK-KMAC - The SHAKE / KECCAK family EVP_MD
7       implementations
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DESCRIPTION

10       Support for computing SHAKE or KECCAK-KMAC digests through the EVP_MD
11       API.
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13       KECCAK-KMAC is a special digest that's used by the KMAC EVP_MAC
14       implementation (see EVP_MAC-KMAC(7)).
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16   Identities
17       This implementation is only available with the default provider, and
18       includes the following varieties:
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20       KECCAK-KMAC-128
21           Known names are "KECCAK-KMAC-128" and "KECCAK-KMAC128"
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23       KECCAK-KMAC-256
24           Known names are "KECCAK-KMAC-256" and "KECCAK-KMAC256"
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26       SHAKE-128
27           Known names are "SHAKE-128" and "SHAKE128"
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29       SHAKE-256
30           Known names are "SHAKE-256" and "SHAKE256"
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32   Gettable Parameters
33       This implementation supports the common gettable parameters described
34       in EVP_MD-common(7).
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36   Settable Context Parameters
37       These implementations support the following OSSL_PARAM(3) entries,
38       settable for an EVP_MD_CTX with EVP_MD_CTX_set_params(3):
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40       "xoflen" (OSSL_DIGEST_PARAM_XOFLEN) <unsigned integer>
41           Sets the digest length for extendable output functions.  The length
42           of the "xoflen" parameter should not exceed that of a size_t.
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SEE ALSO

45       EVP_MD_CTX_set_params(3), provider-digest(7), OSSL_PROVIDER-default(7)
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48       Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
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50       Licensed under the Apache License 2.0 (the "License").  You may not use
51       this file except in compliance with the License.  You can obtain a copy
52       in the file LICENSE in the source distribution or at
53       <https://www.openssl.org/source/license.html>.
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573.0.5                             2022-07-05               EVP_MD-SHAKE(7ossl)
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