Name

RSA_size — gets RSA modulus size

Library

libcrypto.lib

#include <openssl/rsa.h>

int RSA_size(const RSA *rsa);

This function 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->n must not be NULL.

The size in bytes.

RSA_size() is available in all versions of SSLeay and OpenSSL.

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