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b077aed33b
Migrate to OpenSSL 3.0 in advance of FreeBSD 14.0. OpenSSL 1.1.1 (the version we were previously using) will be EOL as of 2023-09-11. Most of the base system has already been updated for a seamless switch to OpenSSL 3.0. For many components we've added `-DOPENSSL_API_COMPAT=0x10100000L` to CFLAGS to specify the API version, which avoids deprecation warnings from OpenSSL 3.0. Changes have also been made to avoid OpenSSL APIs that were already deprecated in OpenSSL 1.1.1. The process of updating to contemporary APIs can continue after this merge. Additional changes are still required for libarchive and Kerberos- related libraries or tools; workarounds will immediately follow this commit. Fixes are in progress in the upstream projects and will be incorporated when those are next updated. There are some performance regressions in benchmarks (certain tests in `openssl speed`) and in some OpenSSL consumers in ports (e.g. haproxy). Investigation will continue for these. Netflix's testing showed no functional regression and a rather small, albeit statistically significant, increase in CPU consumption with OpenSSL 3.0. Thanks to ngie@ and des@ for updating base system components, to antoine@ and bofh@ for ports exp-runs and port fixes/workarounds, and to Netflix and everyone who tested prior to commit or contributed to this update in other ways. PR: 271615 PR: 271656 [exp-run] Relnotes: Yes Sponsored by: The FreeBSD Foundation
62 lines
1.9 KiB
Plaintext
62 lines
1.9 KiB
Plaintext
=pod
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=head1 NAME
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RSA-PSS - EVP_PKEY RSA-PSS algorithm support
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=head1 DESCRIPTION
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The B<RSA-PSS> EVP_PKEY implementation is a restricted version of the RSA
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algorithm which only supports signing, verification and key generation
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using PSS padding modes with optional parameter restrictions.
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It has associated private key and public key formats.
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This algorithm shares several control operations with the B<RSA> algorithm
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but with some restrictions described below.
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=head2 Signing and Verification
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Signing and verification is similar to the B<RSA> algorithm except the
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padding mode is always PSS. If the key in use has parameter restrictions then
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the corresponding signature parameters are set to the restrictions:
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for example, if the key can only be used with digest SHA256, MGF1 SHA256
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and minimum salt length 32 then the digest, MGF1 digest and salt length
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will be set to SHA256, SHA256 and 32 respectively.
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=head2 Key Generation
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By default no parameter restrictions are placed on the generated key.
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=head1 NOTES
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The public key format is documented in RFC4055.
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The PKCS#8 private key format used for RSA-PSS keys is similar to the RSA
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format except it uses the B<id-RSASSA-PSS> OID and the parameters field, if
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present, restricts the key parameters in the same way as the public key.
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=head1 CONFORMING TO
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RFC 4055
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=head1 SEE ALSO
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L<EVP_PKEY_CTX_set_rsa_pss_keygen_md(3)>,
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L<EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(3)>,
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L<EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(3)>,
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L<EVP_PKEY_CTX_new(3)>,
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L<EVP_PKEY_CTX_ctrl_str(3)>,
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L<EVP_PKEY_derive(3)>
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=head1 COPYRIGHT
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Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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