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This is the EVP operation that corresponds to creating direct RSA, DH and DSA keys and set their numbers, to then assign them to an EVP_PKEY, but done entirely using an algorithm agnostic EVP interface. Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from https://github.com/openssl/openssl/pull/10187)
70 lines
2.2 KiB
Plaintext
70 lines
2.2 KiB
Plaintext
=pod
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=head1 NAME
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EVP_PKEY_param_fromdata_init, EVP_PKEY_key_fromdata_init, EVP_PKEY_fromdata,
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EVP_PKEY_param_fromdata_settable, EVP_PKEY_key_fromdata_settable
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- functions to create domain parameters and keys from user data
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=head1 SYNOPSIS
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#include <openssl/evp.h>
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int EVP_PKEY_param_fromdata_init(EVP_PKEY_CTX *ctx);
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int EVP_PKEY_key_fromdata_init(EVP_PKEY_CTX *ctx);
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int EVP_PKEY_fromdata(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey, OSSL_PARAM params[]);
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const OSSL_PARAM *EVP_PKEY_param_fromdata_settable(EVP_PKEY_CTX *ctx);
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const OSSL_PARAM *EVP_PKEY_key_fromdata_settable(EVP_PKEY_CTX *ctx);
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=head1 DESCRIPTION
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EVP_PKEY_param_fromdata_init() initializes a public key algorithm context
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for creating domain parameters from user data.
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EVP_PKEY_key_fromdata_init() initializes a public key algorithm context for
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creating a key from user data.
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EVP_PKEY_fromdata() creates domain parameters or a key, given data from
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I<params> and a context that's been initialized with
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EVP_PKEY_param_fromdata_init() or EVP_PKEY_key_fromdata_init(). The result is
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written to I<*ppkey>.
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EVP_PKEY_param_fromdata_settable() and EVP_PKEY_key_fromdata_settable()
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get a constant B<OSSL_PARAM> array that describes the settable parameters
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that can be used with EVP_PKEY_fromdata().
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See L<OSSL_PARAM(3)> for the use of B<OSSL_PARAM> as parameter descriptor.
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=head1 NOTES
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These functions only work with key management methods coming from a
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provider.
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=for comment We may choose to make this available for legacy methods too...
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=head1 RETURN VALUES
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EVP_PKEY_key_fromdata_init(), EVP_PKEY_param_fromdata_init() and
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EVP_PKEY_fromdata() return 1 for success and 0 or a negative value for
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failure. In particular a return value of -2 indicates the operation is
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not supported by the public key algorithm.
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=head1 SEE ALSO
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L<EVP_PKEY_CTX_new(3)>, L<provider(7)>
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=head1 HISTORY
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These functions were added in OpenSSL 3.0.
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=head1 COPYRIGHT
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Copyright 2019 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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