mirror of https://github.com/openssl/openssl.git
118 lines
3.0 KiB
Plaintext
118 lines
3.0 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
EVP_SIGNATURE-RSA
|
|
- The EVP_PKEY RSA signature implementation
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
Support for computing RSA signatures.
|
|
See L<EVP_PKEY-RSA(7)> for information related to RSA keys.
|
|
|
|
=head2 Signature Parameters
|
|
|
|
The following signature parameters can be set using EVP_PKEY_CTX_set_params().
|
|
This may be called after EVP_PKEY_sign_init() or EVP_PKEY_verify_init(),
|
|
and before calling EVP_PKEY_sign() or EVP_PKEY_verify().
|
|
|
|
=over 4
|
|
|
|
=item "digest" (B<OSSL_SIGNATURE_PARAM_DIGEST>) <UTF8 string>
|
|
|
|
=item "properties" (B<OSSL_SIGNATURE_PARAM_PROPERTIES>) <UTF8 string>
|
|
|
|
These common parameters are described in L<provider-signature(7)>.
|
|
|
|
=item "pad-mode" (B<OSSL_SIGNATURE_PARAM_PAD_MODE>) <UTF8 string>
|
|
|
|
The type of padding to be used. Its value can be one of the following:
|
|
|
|
=over 4
|
|
|
|
=item "none" (B<OSSL_PKEY_RSA_PAD_MODE_NONE>)
|
|
|
|
=item "pkcs1" (B<OSSL_PKEY_RSA_PAD_MODE_PKCSV15>)
|
|
|
|
=item "x931" (B<OSSL_PKEY_RSA_PAD_MODE_X931>)
|
|
|
|
=item "pss" (B<OSSL_PKEY_RSA_PAD_MODE_PSS>)
|
|
|
|
=back
|
|
|
|
=item "mgf1-digest" (B<OSSL_SIGNATURE_PARAM_MGF1_DIGEST>) <UTF8 string>
|
|
|
|
The digest algorithm name to use for the maskGenAlgorithm used by "pss" mode.
|
|
|
|
=item "mgf1-properties" (B<OSSL_SIGNATURE_PARAM_MGF1_PROPERTIES>) <UTF8 string>
|
|
|
|
Sets the name of the property query associated with the "mgf1-digest" algorithm.
|
|
NULL is used if this optional value is not set.
|
|
|
|
=item "saltlen" (B<OSSL_SIGNATURE_PARAM_PSS_SALTLEN>) <integer> or <UTF8 string>
|
|
|
|
The "pss" mode minimum salt length. The value can either be an integer,
|
|
a string value representing a number or one of the following string values:
|
|
|
|
=over 4
|
|
|
|
=item "digest" (B<OSSL_PKEY_RSA_PSS_SALT_LEN_DIGEST>)
|
|
|
|
Use the same length as the digest size.
|
|
|
|
=item "max" (B<OSSL_PKEY_RSA_PSS_SALT_LEN_MAX>)
|
|
|
|
Use the maximum salt length.
|
|
|
|
=item "auto" (B<OSSL_PKEY_RSA_PSS_SALT_LEN_AUTO>)
|
|
|
|
Auto detect the salt length.
|
|
|
|
=item "auto-digestmax" (B<OSSL_PKEY_RSA_PSS_SALT_LEN_AUTO_DIGEST_MAX>)
|
|
|
|
Auto detect the salt length when verifying. Maximize the salt length up to the
|
|
digest size when signing to comply with FIPS 186-4 section 5.5.
|
|
|
|
=back
|
|
|
|
=back
|
|
|
|
The following signature parameters can be retrieved using
|
|
EVP_PKEY_CTX_get_params().
|
|
|
|
=over 4
|
|
|
|
=item "algorithm-id" (B<OSSL_SIGNATURE_PARAM_ALGORITHM_ID>) <octet string>
|
|
|
|
This common parameter is described in L<provider-signature(7)>.
|
|
|
|
=item "digest" (B<OSSL_SIGNATURE_PARAM_DIGEST>) <UTF8 string>
|
|
|
|
=item "pad-mode" (B<OSSL_SIGNATURE_PARAM_PAD_MODE>) <UTF8 string>
|
|
|
|
=item "mgf1-digest" (B<OSSL_SIGNATURE_PARAM_MGF1_DIGEST>) <UTF8 string>
|
|
|
|
=item "saltlen" (B<OSSL_SIGNATURE_PARAM_PSS_SALTLEN>) <integer> or <UTF8 string>
|
|
|
|
These parameters are as described above.
|
|
|
|
=back
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<EVP_PKEY_CTX_set_params(3)>,
|
|
L<EVP_PKEY_sign(3)>,
|
|
L<EVP_PKEY_verify(3)>,
|
|
L<provider-signature(7)>,
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2020-2021 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
|