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=pod
=head1 NAME
EVP_ASYM_CIPHER-RSA
- RSA Asymmetric Cipher algorithm support
=head1 DESCRIPTION
Asymmetric Cipher support for the B<RSA> key type.
=head2 RSA Asymmetric Cipher parameters
=over 4
=item "pad-mode" (B<OSSL_ASYM_CIPHER_PARAM_PAD_MODE>) <UTF8 string>
The default provider understands these RSA padding modes in string form:
=over 4
=item "none" (B<OSSL_PKEY_RSA_PAD_MODE_NONE>)
=item "oaep" (B<OSSL_PKEY_RSA_PAD_MODE_OAEP>)
=item "pkcs1" (B<OSSL_PKEY_RSA_PAD_MODE_PKCSV15>)
This padding mode is no longer supported by the FIPS provider for key
agreement and key transport.
(This is a FIPS 140-3 requirement)
=item "x931" (B<OSSL_PKEY_RSA_PAD_MODE_X931>)
=back
=item "pad-mode" (B<OSSL_ASYM_CIPHER_PARAM_PAD_MODE>) <integer>
The default provider understands these RSA padding modes in integer form:
=over 4
=item 1 (B<RSA_PKCS1_PADDING>)
This padding mode is no longer supported by the FIPS provider for key
agreement and key transport.
(This is a FIPS 140-3 requirement)
=item 3 (B<RSA_NO_PADDING>)
=item 4 (B<RSA_PKCS1_OAEP_PADDING>)
=item 5 (B<RSA_X931_PADDING>)
=back
See L<EVP_PKEY_CTX_set_rsa_padding(3)> for further details.
=item "digest" (B<OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST>) <UTF8 string>
=item "digest-props" (B<OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST_PROPS>) <UTF8 string>
=item "mgf1-digest" (B<OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST>) <UTF8 string>
=item "mgf1-digest-props" (B<OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST_PROPS>) <UTF8 string>
=item "oaep-label" (B<OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL>) <octet string>
=item "tls-client-version" (B<OSSL_ASYM_CIPHER_PARAM_TLS_CLIENT_VERSION>) <unsigned integer>
See B<RSA_PKCS1_WITH_TLS_PADDING> on the page L<EVP_PKEY_CTX_set_rsa_padding(3)>.
=item "tls-negotiated-version" (B<OSSL_ASYM_CIPHER_PARAM_TLS_CLIENT_VERSION>) <unsigned integer>
See B<RSA_PKCS1_WITH_TLS_PADDING> on the page L<EVP_PKEY_CTX_set_rsa_padding(3)>.
See L<provider-asym_cipher(7)/Asymmetric Cipher Parameters> for more information.
=back
The OpenSSL FIPS provider also supports the following parameters:
=over 4
=item "fips-indicator" (B<OSSL_ASYM_CIPHER_PARAM_FIPS_APPROVED_INDICATOR>) <integer>
=item "key-check" (B<OSSL_ASYM_CIPHER_PARAM_FIPS_KEY_CHECK>) <integer>
See L<provider-asym_cipher(7)/Asymmetric Cipher Parameters> for more information.
=item "pkcs15-pad-disabled" (B<OSSL_ASYM_CIPHER_PARAM_FIPS_RSA_PKCS15_PAD_DISABLED>) <integer>
The default value of 1 causes an error during encryption if the RSA padding
mode is set to "pkcs1".
Setting this to zero will ignore the error and set the approved
"fips-indicator" to 0.
This option breaks FIPS compliance if it causes the approved "fips-indicator"
to return 0.
=back
=head1 SEE ALSO
L<EVP_PKEY-RSA(7)>,
L<EVP_PKEY(3)>,
L<provider-asym_cipher(7)>,
L<provider-keymgmt(7)>,
L<OSSL_PROVIDER-default(7)>
L<OSSL_PROVIDER-FIPS(7)>
=head1 COPYRIGHT
Copyright 2022-2024 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.
=cut
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