Prefix/suffix producer for an ASN.1 filter BIO (BIO_f_asn1).
Synopsis
Declared in <openssl/bio.h>
typedef int asn1_ps_func(BIO*, unsigned char**, int*, void*);Return Value
1 on success, or <=0 on failure.
Parameters
Name |
Description |
b |
ASN.1 BIO requesting prefix or suffix octets. |
pbuf |
Receives a pointer to the produced buffer (owned per BIO_asn1_set_* contract). |
plen |
Receives the number of bytes at *`pbuf.` |
parg |
Opaque pointer from BIO_asn1_set_prefix() / BIO_asn1_set_suffix(). |
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