=head1 NAME
+openssl-rsa,
rsa - RSA key processing tool
=head1 SYNOPSIS
=item B<-outform DER|NET|PEM>
-This specifies the output format, the options have the same meaning as the
-B<-inform> option.
+This specifies the output format, the options have the same meaning and default
+as the B<-inform> option.
=item B<-in filename>
=item B<-passin arg>
-the input file password source. For more information about the format of B<arg>
+The input file password source. For more information about the format of B<arg>
see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)>.
=item B<-out filename>
=item B<-passout password>
-the output file password source. For more information about the format of B<arg>
+The output file password source. For more information about the format of B<arg>
see the B<PASS PHRASE ARGUMENTS> section in L<openssl(1)>.
=item B<-aes128|-aes192|-aes256|-aria128|-aria192|-aria256|-camellia128|-camellia192|-camellia256|-des|-des3|-idea>
=item B<-text>
-prints out the various public or private key components in
+Prints out the various public or private key components in
plain text in addition to the encoded version.
=item B<-noout>
-this option prevents output of the encoded version of the key.
+This option prevents output of the encoded version of the key.
=item B<-modulus>
-this option prints out the value of the modulus of the key.
+This option prints out the value of the modulus of the key.
=item B<-check>
-this option checks the consistency of an RSA private key.
+This option checks the consistency of an RSA private key.
=item B<-pubin>
-by default a private key is read from the input file: with this
+By default a private key is read from the input file: with this
option a public key is read instead.
=item B<-pubout>
-by default a private key is output: with this option a public
+By default a private key is output: with this option a public
key will be output instead. This option is automatically set if
the input is a public key.
=item B<-RSAPublicKey_in>, B<-RSAPublicKey_out>
-like B<-pubin> and B<-pubout> except B<RSAPublicKey> format is used instead.
+Like B<-pubin> and B<-pubout> except B<RSAPublicKey> format is used instead.
=item B<-engine id>
-specifying an engine (by its unique B<id> string) will cause B<rsa>
+Specifying an engine (by its unique B<id> string) will cause B<rsa>
to attempt to obtain a functional reference to the specified engine,
thus initialising it if needed. The engine will then be set as the default
for all available algorithms.