OBJ_FIND_SIGID_ALGS(3)     Library Functions Manual     OBJ_FIND_SIGID_ALGS(3)

NAME
     OBJ_find_sigid_algs, OBJ_find_sigid_by_algs - signature algorithm
     mappings

SYNOPSIS
     #include <openssl/objects.h>

     int
     OBJ_find_sigid_algs(int signature, int *pdigest, int *pencryption);

     int
     OBJ_find_sigid_by_algs(int *psignature, int digest, int encryption);

DESCRIPTION
     OBJ_find_sigid_algs() looks up the signature algorithm.  If it is found,
     the associated digest algorithm is stored in *pdigest unless pdigest is a
     NULL pointer, and the associated encryption algorithm is stored in
     *pencryption unless pencryption is a NULL pointer.

     OBJ_find_sigid_by_algs() looks up the pair (digest, encryption).  If it
     is found, the associated signature algorithm is stored in *psignature
     unless psignature is a NULL pointer.

RETURN VALUES
     OBJ_find_sigid_algs() returns 1 if a definition of the signature
     algorithm is found or 0 if a definition of the signature algorithm is not
     built into the library.

     OBJ_find_sigid_by_algs() returns 1 if a signature algorithm using the
     specified digest and encryption algorithms is defined or 0 if the
     definition of such an algorithm is not built into the library.

SEE ALSO
     EVP_cleanup(3), OBJ_create(3), OBJ_nid2obj(3)

HISTORY
     These functions first appeared in OpenSSL 1.0.0 and have been available
     since OpenBSD 4.9.

Linux 6.8.2-arch2-1            January 31, 2024            Linux 6.8.2-arch2-1