X509_SIG_NEW(3)            Library Functions Manual            X509_SIG_NEW(3)

NAME
     X509_SIG_new, X509_SIG_free - PKCS#7 digest information

SYNOPSIS
     #include <openssl/x509.h>

     X509_SIG *
     X509_SIG_new(void);

     void
     X509_SIG_free(X509_SIG *sig);

DESCRIPTION
     X509_SIG_new() allocates and initializes an empty X509_SIG object,
     representing an ASN.1 DigestInfo structure defined in RFC 2315 section
     9.4 and equivalently in RFC 8017 section 9.2.  It can hold a message
     digest together with information about the algorithm used.

     X509_SIG_free() frees sig.

RETURN VALUES
     X509_SIG_new() returns the new X509_SIG object or NULL if an error
     occurs.

SEE ALSO
     d2i_X509_SIG(3), PEM_read_PKCS8(3), RSA_sign(3), X509_new(3),
     X509_SIG_get0(3)

STANDARDS
     RFC 2315: PKCS #7: Cryptographic Message Syntax, section 9: Signed-data
     content type

     RFC 8017: PKCS #1: RSA Cryptography Specifications, section 9: Encoding
     Methods for Signatures

HISTORY
     X509_SIG_new() and X509_SIG_free() appeared in SSLeay 0.4 or earlier and
     have been available since OpenBSD 2.4.

Linux 6.8.7-arch1-1            October 27, 2021            Linux 6.8.7-arch1-1