1DSA_SIZE(3ossl)                     OpenSSL                    DSA_SIZE(3ossl)
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NAME

6       DSA_size, DSA_bits, DSA_security_bits - get DSA signature size, key
7       bits or security bits
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SYNOPSIS

10        #include <openssl/dsa.h>
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12       The following functions have been deprecated since OpenSSL 3.0, and can
13       be hidden entirely by defining OPENSSL_API_COMPAT with a suitable
14       version value, see openssl_user_macros(7):
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16        int DSA_bits(const DSA *dsa);
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18        int DSA_size(const DSA *dsa);
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20        int DSA_security_bits(const DSA *dsa);
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DESCRIPTION

23       All of the functions described on this page are deprecated.
24       Applications should instead use EVP_PKEY_get_bits(3),
25       EVP_PKEY_get_security_bits(3) and EVP_PKEY_get_size(3).
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27       DSA_bits() returns the number of bits in key dsa: this is the number of
28       bits in the p parameter.
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30       DSA_size() returns the maximum size of an ASN.1 encoded DSA signature
31       for key dsa in bytes. It can be used to determine how much memory must
32       be allocated for a DSA signature.
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34       DSA_security_bits() returns the number of security bits of the given
35       dsa key. See BN_security_bits(3).
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RETURN VALUES

38       DSA_security_bits() returns the number of security bits in the key, or
39       -1 if dsa doesn't hold any key parameters.
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41       DSA_bits() returns the number of bits in the key, or -1 if dsa doesn't
42       hold any key parameters.
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44       DSA_size() returns the signature size in bytes, or -1 if dsa doesn't
45       hold any key parameters.
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SEE ALSO

48       EVP_PKEY_get_bits(3), EVP_PKEY_get_security_bits(3),
49       EVP_PKEY_get_size(3), DSA_new(3), DSA_sign(3)
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HISTORY

52       All of these functions were deprecated in OpenSSL 3.0.
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55       Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
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57       Licensed under the Apache License 2.0 (the "License").  You may not use
58       this file except in compliance with the License.  You can obtain a copy
59       in the file LICENSE in the source distribution or at
60       <https://www.openssl.org/source/license.html>.
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643.1.1                             2023-08-31                   DSA_SIZE(3ossl)
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