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authorKris Kennaway <kris@FreeBSD.org>2000-04-13 06:33:22 +0000
committerKris Kennaway <kris@FreeBSD.org>2000-04-13 06:33:22 +0000
commitf579bf8ec7713035a231884db9958cdc4ff5d7cf (patch)
tree85b9c007d5ac1d91a3895eef3fd18d6114b62cc4 /crypto/openssl/doc/crypto/RSA_blinding_on.pod
parent97b2ed56f81c44973772e4cf3869f4f70e2b5d78 (diff)
downloadsrc-f579bf8ec7713035a231884db9958cdc4ff5d7cf.tar.gz
src-f579bf8ec7713035a231884db9958cdc4ff5d7cf.zip
Initial import of OpenSSL 0.9.5a
Notes
Notes: svn path=/vendor-crypto/openssl/dist/; revision=59191
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+=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