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.