1 Long: proxy-pinnedpubkey 2 Arg: <hashes> 3 Help: FILE/HASHES public key to verify proxy with 4 Protocols: TLS 5 Category: proxy tls 6 Example: --proxy-pinnedpubkey keyfile $URL 7 Example: --proxy-pinnedpubkey 'sha256//ce118b51897f4452dc' $URL 8 Added: 7.59.0 9 --- 10 Tells curl to use the specified public key file (or hashes) to verify the 11 proxy. This can be a path to a file which contains a single public key in PEM 12 or DER format, or any number of base64 encoded sha256 hashes preceded by 13 'sha256//' and separated by ';'. 14 15 When negotiating a TLS or SSL connection, the server sends a certificate 16 indicating its identity. A public key is extracted from this certificate and 17 if it does not exactly match the public key provided to this option, curl will 18 abort the connection before sending or receiving any data. 19 20 If this option is used several times, the last one will be used. 21