EVP_MD_CTX_ctrl

Send a legacy control request to a digest context.

Synopsis

Declared in <openssl/evp.h>

int
EVP_MD_CTX_ctrl(
    EVP_MD_CTX* ctx,
    int cmd,
    int p1,
    void* p2);

Return Value

1 on success, or a command-specific status / 0 on failure.

Parameters

NameDescription
ctxDigest context to control.
cmdControl command (algorithm-specific).
p1Integer control argument.
p2Pointer control argument, or NULL.