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588d5d01fe
These were deemed information and useful and that they should not be deprecated. Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from https://github.com/openssl/openssl/pull/11669)
66 lines
1.6 KiB
Plaintext
66 lines
1.6 KiB
Plaintext
=pod
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=head1 NAME
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RSA_size, RSA_bits, RSA_security_bits - get RSA modulus size or security bits
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=head1 SYNOPSIS
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#include <openssl/rsa.h>
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int RSA_bits(const RSA *rsa);
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Deprecated since OpenSSL 3.0, can be hidden entirely by defining
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B<OPENSSL_API_COMPAT> with a suitable version value, see
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L<openssl_user_macros(7)>:
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int RSA_size(const RSA *rsa);
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int RSA_security_bits(const RSA *rsa)
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=head1 DESCRIPTION
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RSA_bits() returns the number of significant bits.
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B<rsa> and B<rsa-E<gt>n> must not be B<NULL>.
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The remaining functions described on this page are deprecated.
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Applications should instead use L<EVP_PKEY_size(3)>, L<EVP_PKEY_bits(3)>
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and L<EVP_PKEY_security_bits(3)>.
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RSA_size() returns the RSA modulus size in bytes. It can be used to
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determine how much memory must be allocated for an RSA encrypted
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value.
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RSA_security_bits() returns the number of security bits of the given B<rsa>
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key. See L<BN_security_bits(3)>.
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=head1 RETURN VALUES
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RSA_bits() returns the number of bits in the key.
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RSA_size() returns the size of modulus in bytes.
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RSA_security_bits() returns the number of security bits.
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=head1 SEE ALSO
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L<BN_num_bits(3)>
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=head1 HISTORY
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The RSA_size() and RSA_security_bits() functions were deprecated in OpenSSL 3.0.
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The RSA_bits() function was added in OpenSSL 1.1.0.
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=head1 COPYRIGHT
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Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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