| 1 | =pod
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| 2 |
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| 3 | =head1 NAME
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| 4 |
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| 5 | EVP_KEM-RSA
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| 6 | - EVP_KEM RSA keytype and algorithm support
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| 7 |
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| 8 | =head1 DESCRIPTION
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| 9 |
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| 10 | The B<RSA> keytype and its parameters are described in L<EVP_PKEY-RSA(7)>.
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| 11 | See L<EVP_PKEY_encapsulate(3)> and L<EVP_PKEY_decapsulate(3)> for more info.
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| 12 |
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| 13 | =head2 RSA KEM parameters
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| 14 |
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| 15 | =over 4
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| 16 |
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| 17 | =item "operation" (B<OSSL_KEM_PARAM_OPERATION>) <UTF8 string>
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| 18 |
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| 19 | The OpenSSL RSA Key Encapsulation Mechanism only currently supports the
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| 20 | following operation
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| 21 |
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| 22 | =over 4
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| 23 |
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| 24 | =item "RSASVE"
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| 25 |
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| 26 | The encapsulate function simply generates a secret using random bytes and then
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| 27 | encrypts the secret using the RSA public key (with no padding).
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| 28 | The decapsulate function recovers the secret using the RSA private key.
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| 29 |
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| 30 | =back
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| 31 |
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| 32 | This can be set using EVP_PKEY_CTX_set_kem_op().
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| 33 |
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| 34 | =back
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| 35 |
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| 36 |
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| 37 | =head1 CONFORMING TO
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| 38 |
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| 39 | =over 4
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| 40 |
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| 41 | =item SP800-56Br2
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| 42 |
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| 43 | Section 7.2.1.2 RSASVE Generate Operation (RSASVE.GENERATE).
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| 44 | Section 7.2.1.3 RSASVE Recovery Operation (RSASVE.RECOVER).
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| 45 |
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| 46 | =back
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| 47 |
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| 48 | =head1 SEE ALSO
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| 49 |
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| 50 | L<EVP_PKEY_CTX_set_kem_op(3)>,
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| 51 | L<EVP_PKEY_encapsulate(3)>,
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| 52 | L<EVP_PKEY_decapsulate(3)>
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| 53 | L<EVP_KEYMGMT(3)>,
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| 54 | L<EVP_PKEY(3)>,
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| 55 | L<provider-keymgmt(7)>
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| 56 |
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| 57 | =head1 HISTORY
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| 58 |
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| 59 | This functionality was added in OpenSSL 3.0.
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| 60 |
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| 61 | =head1 COPYRIGHT
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| 62 |
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| 63 | Copyright 2020-2022 The OpenSSL Project Authors. All Rights Reserved.
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| 64 |
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| 65 | Licensed under the Apache License 2.0 (the "License"). You may not use
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| 66 | this file except in compliance with the License. You can obtain a copy
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| 67 | in the file LICENSE in the source distribution or at
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| 68 | L<https://www.openssl.org/source/license.html>.
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| 69 |
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| 70 | =cut
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