PKCS7_GET_SIGNER_INFO(3)   Library Functions Manual   PKCS7_GET_SIGNER_INFO(3)

NAME
     PKCS7_get_signer_info - retrieve signerInfos from a SignedData object

SYNOPSIS
     #include <openssl/pkcs7.h>

     STACK_OF(PKCS7_SIGNER_INFO) *
     PKCS7_get_signer_info(PKCS7 *p7);

DESCRIPTION
     This function retrieves the set of SignerInfo structures from the
     signerInfos field of p7.

     These can subsequently be manipulated with the functions documented in
     PKCS7_add_attribute(3).

RETURN VALUES
     PKCS7_get_signer_info() returns an internal pointer to a
     STACK_OF(PKCS7_SIGNER_INFO) object or NULL on failure.  It fails if p7 is
     NULL, if it has no content, or if it is of a type other than SignedData
     or SignedAndEnvelopedData.

SEE ALSO
     PKCS7_add_attribute(3), PKCS7_final(3), PKCS7_new(3), PKCS7_sign(3),
     PKCS7_sign_add_signer(3)

HISTORY
     PKCS7_get_signer_info() first appeared in SSLeay 0.8.1 and has been
     available since OpenBSD 2.4.

Linux 6.8.7-arch1-1              June 10, 2020             Linux 6.8.7-arch1-1