mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-04 13:23:26 +01:00
117 lines
3.4 KiB
Plaintext
117 lines
3.4 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
EVP_RAND-TEST-RAND - The test EVP_RAND implementation
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
Support for a test generator through the B<EVP_RAND> API. This generator is
|
|
for test purposes only, it does not generate random numbers.
|
|
|
|
=head2 Identity
|
|
|
|
"TEST-RAND" is the name for this implementation; it can be used with the
|
|
EVP_RAND_fetch() function.
|
|
|
|
=head2 Supported parameters
|
|
|
|
The supported parameters are:
|
|
|
|
=over 4
|
|
|
|
=item "state" (B<OSSL_RAND_PARAM_STATE>) <integer>
|
|
|
|
These parameter works as described in L<EVP_RAND(3)/PARAMETERS>.
|
|
|
|
=item "strength" (B<OSSL_RAND_PARAM_STRENGTH>) <unsigned integer>
|
|
|
|
=item "reseed_requests" (B<OSSL_DRBG_PARAM_RESEED_REQUESTS>) <unsigned integer>
|
|
|
|
=item "reseed_time_interval" (B<OSSL_DRBG_PARAM_RESEED_TIME_INTERVAL>) <integer>
|
|
|
|
=item "max_request" (B<OSSL_DRBG_PARAM_RESEED_REQUESTS>) <unsigned integer>
|
|
|
|
=item "min_entropylen" (B<OSSL_DRBG_PARAM_MIN_ENTROPYLEN>) <unsigned integer>
|
|
|
|
=item "max_entropylen" (B<OSSL_DRBG_PARAM_MAX_ENTROPYLEN>) <unsigned integer>
|
|
|
|
=item "min_noncelen" (B<OSSL_DRBG_PARAM_MIN_NONCELEN>) <unsigned integer>
|
|
|
|
=item "max_noncelen" (B<OSSL_DRBG_PARAM_MAX_NONCELEN>) <unsigned integer>
|
|
|
|
=item "max_perslen" (B<OSSL_DRBG_PARAM_MAX_PERSLEN>) <unsigned integer>
|
|
|
|
=item "max_adinlen" (B<OSSL_DRBG_PARAM_MAX_ADINLEN>) <unsigned integer>
|
|
|
|
=item "reseed_counter" (B<OSSL_DRBG_PARAM_RESEED_COUNTER>) <unsigned integer>
|
|
|
|
These parameters work as described in L<EVP_RAND(3)/PARAMETERS>, except that
|
|
they can all be set as well as read.
|
|
|
|
=item "test_entropy" (B<OSSL_RAND_PARAM_TEST_ENTROPY>) <octet string>
|
|
|
|
Sets the bytes returned when the test generator is sent an entropy request.
|
|
The current position is remembered across generate calls.
|
|
If there are insufficient data present to satisfy a call, an error is returned.
|
|
|
|
=item "test_nonce" (B<OSSL_RAND_PARAM_TEST_NONCE>) <octet string>
|
|
|
|
Sets the bytes returned when the test generator is sent a nonce request.
|
|
Each nonce request will return all of the bytes.
|
|
|
|
=back
|
|
|
|
=head1 NOTES
|
|
|
|
A context for a test generator can be obtained by calling:
|
|
|
|
EVP_RAND *rand = EVP_RAND_fetch(NULL, "TEST-RAND", NULL);
|
|
EVP_RAND_CTX *rctx = EVP_RAND_CTX_new(rand);
|
|
|
|
=head1 EXAMPLES
|
|
|
|
EVP_RAND *rand;
|
|
EVP_RAND_CTX *rctx;
|
|
unsigned char bytes[100];
|
|
OSSL_PARAM params[4], *p = params;
|
|
unsigned char entropy[1000] = { ... };
|
|
unsigned char nonce[20] = { ... };
|
|
unsigned int strength = 48;
|
|
|
|
rand = EVP_RAND_fetch(NULL, "TEST-RAND", NULL);
|
|
rctx = EVP_RAND_CTX_new(rand, NULL);
|
|
EVP_RAND_free(rand);
|
|
|
|
*p++ = OSSL_PARAM_construct_uint(OSSL_RAND_PARAM_STRENGTH, &strength);
|
|
*p++ = OSSL_PARAM_construct_octet_string(OSSL_RAND_PARAM_TEST_ENTROPY,
|
|
entropy, sizeof(entropy));
|
|
*p++ = OSSL_PARAM_construct_octet_string(OSSL_RAND_PARAM_TEST_NONCE,
|
|
nonce, sizeof(nonce));
|
|
*p = OSSL_PARAM_construct_end();
|
|
EVP_RAND_instantiate(rctx, strength, 0, NULL, 0, params);
|
|
|
|
EVP_RAND_generate(rctx, bytes, sizeof(bytes), strength, 0, NULL, 0);
|
|
|
|
EVP_RAND_CTX_free(rctx);
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<EVP_RAND(3)>,
|
|
L<EVP_RAND(3)/PARAMETERS>
|
|
|
|
=head1 HISTORY
|
|
|
|
This functionality was added in OpenSSL 3.0.
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2020-2021 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
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|