RSA_blinding_on, RSA_blinding_off - protect the RSA operation from timing attacks
#include <openssl/rsa.h>
int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
void RSA_blinding_off(RSA *rsa);
RSA is vulnerable to timing attacks. In a setup where attackers can measure the time of RSA decryption or signature operations, blinding must be used to protect the RSA operation from that attack.
RSA_blinding_on()
turns blinding on for key rsa and generates a
random blinding factor. ctx is NULL or a pre-allocated and
initialized BN_CTX.
RSA_blinding_off()
turns blinding off and frees the memory used for
the blinding factor.
RSA_blinding_on()
returns 1 on success, and 0 if an error occurred.
RSA_blinding_off()
returns no value.
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Licensed under the OpenSSL license (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.