45 lines
1.4 KiB
Markdown
45 lines
1.4 KiB
Markdown
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---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Long: pinnedpubkey
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Arg: <hashes>
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Help: FILE/HASHES Public key to verify peer against
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Protocols: TLS
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Category: tls
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Added: 7.39.0
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Multi: single
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See-also:
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- hostpubsha256
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Example:
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- --pinnedpubkey keyfile $URL
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- --pinnedpubkey 'sha256//ce118b51897f4452dc' $URL
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---
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# `--pinnedpubkey`
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Tells curl to use the specified public key file (or hashes) to verify the
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peer. This can be a path to a file which contains a single public key in PEM
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or DER format, or any number of base64 encoded sha256 hashes preceded by
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'sha256//' and separated by ';'.
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When negotiating a TLS or SSL connection, the server sends a certificate
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indicating its identity. A public key is extracted from this certificate and
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if it does not exactly match the public key provided to this option, curl
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aborts the connection before sending or receiving any data.
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This option is independent of option --insecure. If you use both options
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together then the peer is still verified by public key.
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PEM/DER support:
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OpenSSL and GnuTLS (added in 7.39.0), wolfSSL (added in 7.43.0), mbedTLS
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(added in 7.47.0), Secure Transport macOS 10.7+/iOS 10+ (7.54.1), Schannel
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(7.58.1)
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sha256 support:
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OpenSSL, GnuTLS and wolfSSL (added in 7.44.0), mbedTLS (added in 7.47.0),
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Secure Transport macOS 10.7+/iOS 10+ (7.54.1), Schannel (7.58.1)
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Other SSL backends not supported.
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