## 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

## HISTORY

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