| 1 | =pod
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| 2 |
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| 3 | =head1 NAME
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| 4 |
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| 5 | DSA_size, DSA_bits, DSA_security_bits - get DSA signature size, key bits or security bits
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| 6 |
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| 7 | =head1 SYNOPSIS
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| 8 |
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| 9 | #include <openssl/dsa.h>
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| 10 |
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| 11 | The following functions have been deprecated since OpenSSL 3.0, and can be
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| 12 | hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value,
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| 13 | see L<openssl_user_macros(7)>:
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| 14 |
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| 15 | int DSA_bits(const DSA *dsa);
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| 16 |
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| 17 | int DSA_size(const DSA *dsa);
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| 18 |
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| 19 | int DSA_security_bits(const DSA *dsa);
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| 20 |
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| 21 | =head1 DESCRIPTION
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| 22 |
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| 23 | All of the functions described on this page are deprecated.
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| 24 | Applications should instead use L<EVP_PKEY_get_bits(3)>,
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| 25 | L<EVP_PKEY_get_security_bits(3)> and L<EVP_PKEY_get_size(3)>.
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| 26 |
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| 27 | DSA_bits() returns the number of bits in key I<dsa>: this is the number
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| 28 | of bits in the I<p> parameter.
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| 29 |
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| 30 | DSA_size() returns the maximum size of an ASN.1 encoded DSA signature
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| 31 | for key I<dsa> in bytes. It can be used to determine how much memory must
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| 32 | be allocated for a DSA signature.
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| 33 |
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| 34 | DSA_security_bits() returns the number of security bits of the given I<dsa>
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| 35 | key. See L<BN_security_bits(3)>.
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| 36 |
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| 37 | =head1 RETURN VALUES
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| 38 |
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| 39 | DSA_security_bits() returns the number of security bits in the key, or -1 if
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| 40 | I<dsa> doesn't hold any key parameters.
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| 41 |
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| 42 | DSA_bits() returns the number of bits in the key, or -1 if I<dsa> doesn't
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| 43 | hold any key parameters.
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| 44 |
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| 45 | DSA_size() returns the signature size in bytes, or -1 if I<dsa> doesn't
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| 46 | hold any key parameters.
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| 47 |
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| 48 | =head1 SEE ALSO
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| 49 |
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| 50 | L<EVP_PKEY_get_bits(3)>,
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| 51 | L<EVP_PKEY_get_security_bits(3)>,
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| 52 | L<EVP_PKEY_get_size(3)>,
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| 53 | L<DSA_new(3)>, L<DSA_sign(3)>
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| 54 |
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| 55 | =head1 HISTORY
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| 56 |
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| 57 | All of these functions were deprecated in OpenSSL 3.0.
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| 58 |
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| 59 | =head1 COPYRIGHT
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| 60 |
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| 61 | Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
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| 62 |
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| 63 | Licensed under the Apache License 2.0 (the "License"). You may not use
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| 64 | this file except in compliance with the License. You can obtain a copy
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| 65 | in the file LICENSE in the source distribution or at
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| 66 | L<https://www.openssl.org/source/license.html>.
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| 67 |
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| 68 | =cut
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