CURLOPT_SSH_HOST_PUBLIC_KEY_MD5(3)                    Library Functions Manual

NAME
       CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 - MD5 checksum of SSH server public key

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSH_HOST_PUBLIC_KEY_MD5,
                                 char *md5);

DESCRIPTION
       Pass a char pointer pointing to a string containing 32 hexadecimal
       digits. The string should be the 128 bit MD5 checksum of the remote
       host's public key, and libcurl aborts the connection to the host unless
       the MD5 checksum match.

       MD5 is a weak algorithm. We strongly recommend using
       CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256(3) instead.

       The application does not have to keep the string around after setting
       this option.

DEFAULT
       NULL

PROTOCOLS
       SCP and SFTP

EXAMPLE
       int main(void)
       {
         CURL *curl = curl_easy_init();
         if(curl) {
           CURLcode res;
           curl_easy_setopt(curl, CURLOPT_URL, "sftp://example.com/file");
           curl_easy_setopt(curl, CURLOPT_SSH_HOST_PUBLIC_KEY_MD5,
                            "afe17cd62a0f3b61f1ab9cb22ba269a7");
           res = curl_easy_perform(curl);
           curl_easy_cleanup(curl);
         }
       }

AVAILABILITY
       Added in 7.17.1

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.

SEE ALSO
       CURLOPT_SSH_AUTH_TYPES(3), CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256(3),
       CURLOPT_SSH_KNOWNHOSTS(3), CURLOPT_SSH_PUBLIC_KEYFILE(3)

libcurl                          April 26 2024
                                            CURLOPT_SSH_HOST_PUBLIC_KEY_MD5(3)