| =pod | 
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 | =head1 NAME | 
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 | d2i_X509_SIG, i2d_X509_SIG - DigestInfo functions. | 
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 | =head1 SYNOPSIS | 
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 |  #include <openssl/x509.h> | 
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 |  X509_SIG *d2i_X509_SIG(X509_SIG **a, unsigned char **pp, long length); | 
 |  int i2d_X509_SIG(X509_SIG *a, unsigned char **pp); | 
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 | =head1 DESCRIPTION | 
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 | These functions decode and encode an X509_SIG structure which is | 
 | equivalent to the B<DigestInfo> structure defined in PKCS#1 and PKCS#7. | 
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 | Otherwise these behave in a similar way to d2i_X509() and i2d_X509() | 
 | described in the L<d2i_X509(3)> manual page. | 
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 | =head1 SEE ALSO | 
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 | L<d2i_X509(3)> | 
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 | =head1 HISTORY | 
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 | TBA | 
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 | =cut |