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Title "EVP_RAND-CRNG-TEST 7ossl" For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
EVP_RAND-CRNG-TEST - The FIPS health testing EVP_RAND filter Header "DESCRIPTION" This EVP_RAND object acts as a filter between the entropy source and its users. It performs CRNG health tests as defined in SP 800-90B <https://csrc.nist.gov/pubs/sp/800/90/b/final> Section 4 "Health Tests". Most requests are forwarded to the entropy source, either via its parent reference or via the provider entropy upcalls. Subsection "Identity" "CRNG-TEST" is the name for this implementation; it can be used with the \fBEVP_RAND_fetch() function. Subsection "Supported parameters" If a parent EVP_RAND is specified on context creation, the parent's parameters are supported because the request is forwarded to the parent seed source for processing.

If no parent EVP_RAND is specified on context creation, the following parameters are supported:

Item """state"" (OSSL_RAND_PARAM_STATE) <integer>"

0

Item """strength"" (OSSL_RAND_PARAM_STRENGTH) <unsigned integer>" Item """max_request"" (OSSL_RAND_PARAM_MAX_REQUEST) <unsigned integer>"

These parameters work as described in "PARAMETERS" in EVP_RAND\|(3).

Item """fips-indicator"" (OSSL_DRBG_PARAM_FIPS_APPROVED_INDICATOR) <integer>" This parameter works as described in "PARAMETERS" in provider-rand\|(7). Header "NOTES" This EVP_RAND is only implemented by the OpenSSL FIPS provider.

A context for a health test filter can be obtained by calling:

.Vb 3 EVP_RAND *parent = ...; EVP_RAND *rand = EVP_RAND_fetch(NULL, "CRNG-TEST", NULL); EVP_RAND_CTX *rctx = EVP_RAND_CTX_new(rand, parent); .Ve

Header "SEE ALSO" \fBEVP_RAND\|(3), OSSL_PROVIDER-FIPS\|(7) Header "HISTORY" This functionality was added in OpenSSL 3.4. Header "COPYRIGHT" Copyright 2024 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.