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d2i_X509_SIG, i2d_X509_SIG - DigestInfo functions.
#include <openssl/x509.h> X509_SIG *d2i_X509_SIG(X509_SIG **a, unsigned char **pp, long length); int i2d_X509_SIG(X509_SIG *a, unsigned char **pp);
These functions decode and encode an X509_SIG structure which is equivalent to the DigestInfo structure defined in PKCS#1 and PKCS#7. Othewise these behave in a similar way to d2i_X509() and i2d_X509() described in the d2i_X509(3) manual page.