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										 |  |  | =pod | 
					
						
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							|  |  |  | =head1 NAME | 
					
						
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										 |  |  | EVP_SIGNATURE-HMAC, EVP_SIGNATURE-Siphash, EVP_SIGNATURE-Poly1305, | 
					
						
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										 |  |  | EVP_SIGNATURE-CMAC | 
					
						
							|  |  |  | - The legacy B<EVP_PKEY> MAC signature implementations | 
					
						
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							|  |  |  | =head1 DESCRIPTION | 
					
						
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							|  |  |  | The algorithms described here have legacy support for creating MACs using | 
					
						
							|  |  |  | L<EVP_DigestSignInit(3)> and related functions. This is not the preferred way of | 
					
						
							|  |  |  | creating MACs. Instead you should use the newer L<EVP_MAC_init(3)> functions. | 
					
						
							|  |  |  | This mechanism is provided for backwards compatibility with older versions of | 
					
						
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										 |  |  | OpenSSL. | 
					
						
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										 |  |  | The same signature parameters can be set using EVP_PKEY_CTX_set_params() as can | 
					
						
							|  |  |  | be set via EVP_MAC_CTX_set_params() for the underlying EVP_MAC. See | 
					
						
							|  |  |  | L<EVP_MAC-HMAC(7)>, L<EVP_MAC-Siphash(7)>, L<EVP_MAC-Poly1305(7)> and | 
					
						
							|  |  |  | L<EVP_MAC-CMAC(7)> for details. | 
					
						
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							|  |  |  |  See L<EVP_PKEY-HMAC(7)>, L<EVP_PKEY-Siphash(7)>, L<EVP_PKEY-Poly1305(7)> or | 
					
						
							|  |  |  |  L<EVP_PKEY-CMAC(7)> for details about parameters that are supported during the | 
					
						
							|  |  |  |  creation of an EVP_PKEY. | 
					
						
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							|  |  |  | =head1 SEE ALSO | 
					
						
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							|  |  |  | L<EVP_MAC_init(3)>, | 
					
						
							|  |  |  | L<EVP_DigestSignInit(3)>, | 
					
						
							|  |  |  | L<EVP_PKEY-HMAC(7)>, | 
					
						
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										 |  |  | L<EVP_PKEY-Siphash(7)>, | 
					
						
							|  |  |  | L<EVP_PKEY-Poly1305(7)>, | 
					
						
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										 |  |  | L<EVP_PKEY-CMAC(7)>, | 
					
						
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										 |  |  | L<EVP_MAC-HMAC(7)>, | 
					
						
							|  |  |  | L<EVP_MAC-Siphash(7)>, | 
					
						
							|  |  |  | L<EVP_MAC-Poly1305(7)>, | 
					
						
							|  |  |  | L<EVP_MAC-CMAC(7)>, | 
					
						
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										 |  |  | L<provider-signature(7)>, | 
					
						
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							|  |  |  | =head1 COPYRIGHT | 
					
						
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							|  |  |  | Copyright 2020 The OpenSSL Project Authors. All Rights Reserved. | 
					
						
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							|  |  |  | 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>. | 
					
						
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							|  |  |  | =cut |