DSA_size3ssl
Get dsa signature size, key bits or security bits
Usage
#include <openssl/dsa.h>The following functions have been deprecated since OpenSSL 3.0, and can be hidden entirely by defining OPENSSL_API_COMPAT with a suitable version value, see openssl_user_macros(7):
int DSA_bits(const DSA *dsa);int DSA_size(const DSA *dsa);int DSA_security_bits(const DSA *dsa);
Overview
All of the functions described on this page are deprecated. Applications should instead use EVP_PKEY_get_bits(3), EVP_PKEY_get_security_bits(3) and EVP_PKEY_get_size(3).
DSA_bits() returns the number of bits in key dsa: this is the number of bits in the p parameter.
DSA_size() returns the maximum size of an ASN.1 encoded DSA signature for key dsa in bytes. It can be used to determine how much memory must be allocated for a DSA signature.
DSA_security_bits() returns the number of security bits of the given dsa key. See BN_security_bits(3).
Return values
DSA_security_bits() returns the number of security bits in the key, or -1 if dsa doesn't hold any key parameters.
DSA_bits() returns the number of bits in the key, or -1 if dsa doesn't hold any key parameters.
DSA_size() returns the signature size in bytes, or -1 if dsa doesn't hold any key parameters.
Releases
13 releases since Debian 3.0 (Woody); the text changed 12 times.