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.TH CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 3 "January 02, 2023" "libcurl 7.88.1" "curl_easy_setopt options"

.SH NAME
CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 \- SHA256 hash of SSH server public key
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256,
                          char *sha256);
.SH DESCRIPTION
Pass a char * pointing to a string containing a Base64-encoded SHA256
hash of the remote host's public key.
The transfer will fail if the given hash does not match the hash the
remote host provides.

.SH DEFAULT
NULL
.SH PROTOCOLS
SCP and SFTP
.SH EXAMPLE
.nf
CURL *curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_URL, "sftp://example.com/file");
  curl_easy_setopt(curl, CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256,
                   "NDVkMTQxMGQ1ODdmMjQ3MjczYjAyOTY5MmRkMjVmNDQ=");
  ret = curl_easy_perform(curl);
  curl_easy_cleanup(curl);
}
.fi
.SH AVAILABILITY
Added in 7.80.0
Requires the libssh2 backend.
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
CURLE_OUT_OF_MEMORY if there was insufficient heap space.
.SH "SEE ALSO"
.BR CURLOPT_SSH_PUBLIC_KEYFILE "(3), " CURLOPT_SSH_AUTH_TYPES "(3), "
