EVP_PKEY_CTX_set_signature_md

Set the message digest used when signing or verifying with ctx.

Synopsis

Declared in <openssl/evp.h>

int
EVP_PKEY_CTX_set_signature_md(
    EVP_PKEY_CTX* ctx,
    EVP_MD const* md);

Return Value

1 on success, or a non-positive value on error.

Parameters

NameDescription
ctxKey context configured for a signature operation.
mdDigest algorithm (for example EVP_sha256()), or NULL to clear.