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CURLOPT_KEYPASSWD(3) Library Functions Manual CURLOPT_KEYPASSWD(3) NAME CURLOPT_KEYPASSWD - passphrase to private key SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_KEYPASSWD, char *pwd); DESCRIPTION Pass a pointer to a null-terminated string as parameter. It is used as the password required to use the CURLOPT_SSLKEY(3) or CURLOPT_SSH_PRI- VATE_KEYFILE(3) private key. You never need a passphrase to load a cer- tificate but you need one to load your private key. The application does not have to keep the string around after setting this option. Using this option multiple times makes the last set string override the previous ones. Set it to NULL to disable its use again. DEFAULT NULL PROTOCOLS This functionality affects all TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc. This option works only with the following TLS backends: OpenSSL, Schan- nel, mbedTLS and wolfSSL EXAMPLE int main(void) { CURL *curl = curl_easy_init(); if(curl) { CURLcode res; curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin"); curl_easy_setopt(curl, CURLOPT_SSLCERT, "client.pem"); curl_easy_setopt(curl, CURLOPT_SSLKEY, "key.pem"); curl_easy_setopt(curl, CURLOPT_KEYPASSWD, "superman"); res = curl_easy_perform(curl); curl_easy_cleanup(curl); } } HISTORY This option was known as CURLOPT_SSLKEYPASSWD up to 7.16.4 and CUR- LOPT_SSLCERTPASSWD up to 7.9.2. AVAILABILITY Added in curl 7.17.0 RETURN VALUE curl_easy_setopt(3) returns a CURLcode indicating success or error. CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3). SEE ALSO CURLOPT_SSH_PRIVATE_KEYFILE(3), CURLOPT_SSLKEY(3) libcurl 2025-06-03 CURLOPT_KEYPASSWD(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | HISTORY | AVAILABILITY | RETURN VALUE | SEE ALSO
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