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author | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
commit | 3562e78743202e43aec8727005182a2558117eca (patch) | |
tree | 8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/doc/crypto/RSA_blinding_on.pod | |
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Diffstat (limited to 'openssl/doc/crypto/RSA_blinding_on.pod')
-rw-r--r-- | openssl/doc/crypto/RSA_blinding_on.pod | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/openssl/doc/crypto/RSA_blinding_on.pod b/openssl/doc/crypto/RSA_blinding_on.pod new file mode 100644 index 000000000..fd2c69abd --- /dev/null +++ b/openssl/doc/crypto/RSA_blinding_on.pod @@ -0,0 +1,43 @@ +=pod + +=head1 NAME + +RSA_blinding_on, RSA_blinding_off - protect the RSA operation from timing attacks + +=head1 SYNOPSIS + + #include <openssl/rsa.h> + + int RSA_blinding_on(RSA *rsa, BN_CTX *ctx); + + void RSA_blinding_off(RSA *rsa); + +=head1 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. + +RSA_blinding_on() turns blinding on for key B<rsa> and generates a +random blinding factor. B<ctx> is B<NULL> or a pre-allocated and +initialized B<BN_CTX>. The random number generator must be seeded +prior to calling RSA_blinding_on(). + +RSA_blinding_off() turns blinding off and frees the memory used for +the blinding factor. + +=head1 RETURN VALUES + +RSA_blinding_on() returns 1 on success, and 0 if an error occurred. + +RSA_blinding_off() returns no value. + +=head1 SEE ALSO + +L<rsa(3)|rsa(3)>, L<rand(3)|rand(3)> + +=head1 HISTORY + +RSA_blinding_on() and RSA_blinding_off() appeared in SSLeay 0.9.0. + +=cut |