RSA_size, RSA_bits, RSA_security_bits - get RSA modulus size or security bits
#include <openssl/rsa.h>
int RSA_bits(const RSA *rsa);Deprecated since OpenSSL 3.0, can be hidden entirely by defining OPENSSL_API_COMPAT with a suitable version value, see openssl_user_macros(7):
int RSA_size(const RSA *rsa);
int RSA_security_bits(const RSA *rsa);RSA_bits() returns the number of significant bits.
rsa and rsa->n must not be NULL.
The remaining functions described on this page are deprecated. Applications should instead use EVP_PKEY_get_size(3), EVP_PKEY_get_bits(3) and EVP_PKEY_get_security_bits(3).
RSA_size() returns the RSA modulus size in bytes. It can be used to determine how much memory must be allocated for an RSA encrypted value.
RSA_security_bits() returns the number of security bits of the given rsa key. See BN_security_bits(3).
RSA_bits() returns the number of bits in the key.
RSA_size() returns the size of modulus in bytes.
RSA_security_bits() returns the number of security bits.
The RSA_size() and RSA_security_bits() functions were deprecated in OpenSSL 3.0.
The RSA_bits() function was added in OpenSSL 1.1.0.
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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 https://www.openssl.org/source/license.html.