RSA_blinding_on 3 2000-07-16 0.9.9-dev OpenSSL
NAME
RSA_blinding_on, RSA_blinding_off - protect the RSA operation from timing attacks
LIBRARY
libcrypto, -lcrypto
SYNOPSIS
#include
int RSA_blinding_on(RSA *rsa, BN_CTX *ctx);
void RSA_blinding_off(RSA *rsa);
DESCRIPTION
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.
_R_S_A___b_l_i_n_d_i_n_g___o_n_(_) turns blinding on for key rrssaa and generates a
random blinding factor. ccttxx is NNUULLLL or a pre-allocated and
initialized BBNN__CCTTXX. The random number generator must be seeded
prior to calling _R_S_A___b_l_i_n_d_i_n_g___o_n_(_).
_R_S_A___b_l_i_n_d_i_n_g___o_f_f_(_) turns blinding off and frees the memory used for
the blinding factor.
RETURN VALUES
_R_S_A___b_l_i_n_d_i_n_g___o_n_(_) returns 1 on success, and 0 if an error occurred.
_R_S_A___b_l_i_n_d_i_n_g___o_f_f_(_) returns no value.
SEE ALSO
_o_p_e_n_s_s_l___r_s_a(3), _o_p_e_n_s_s_l___r_a_n_d(3)
HISTORY
_R_S_A___b_l_i_n_d_i_n_g___o_n_(_) and _R_S_A___b_l_i_n_d_i_n_g___o_f_f_(_) appeared in SSLeay 0.9.0.