1=pod 2 3=head1 NAME 4 5EVP_CIPHER-AES - The AES EVP_CIPHER implementations 6 7=head1 DESCRIPTION 8 9Support for AES symmetric encryption using the B<EVP_CIPHER> API. 10 11=head2 Algorithm Names 12 13The following algorithms are available in the FIPS provider as well as the 14default provider: 15 16=over 4 17 18=item "AES-128-CBC", "AES-192-CBC" and "AES-256-CBC" 19 20=item "AES-128-CBC-CTS", "AES-192-CBC-CTS" and "AES-256-CBC-CTS" 21 22=item "AES-128-CFB", "AES-192-CFB", "AES-256-CFB", 23"AES-128-CFB1", "AES-192-CFB1", "AES-256-CFB1", 24"AES-128-CFB8", "AES-192-CFB8" and "AES-256-CFB8" 25 26=item "AES-128-CTR", "AES-192-CTR" and "AES-256-CTR" 27 28=item "AES-128-ECB", "AES-192-ECB" and "AES-256-ECB" 29 30=item "AES-192-OFB", "AES-128-OFB" and "AES-256-OFB" 31 32=item "AES-128-XTS" and "AES-256-XTS" 33 34=item "AES-128-CCM", "AES-192-CCM" and "AES-256-CCM" 35 36=item "AES-128-GCM", "AES-192-GCM" and "AES-256-GCM" 37 38=item "AES-128-WRAP", "AES-192-WRAP", "AES-256-WRAP", 39"AES-128-WRAP-PAD", "AES-192-WRAP-PAD", "AES-256-WRAP-PAD", 40"AES-128-WRAP-INV", "AES-192-WRAP-INV", "AES-256-WRAP-INV", 41"AES-128-WRAP-PAD-INV", "AES-192-WRAP-PAD-INV" and "AES-256-WRAP-PAD-INV" 42 43=item "AES-128-CBC-HMAC-SHA1", "AES-256-CBC-HMAC-SHA1", 44"AES-128-CBC-HMAC-SHA256" and "AES-256-CBC-HMAC-SHA256" 45 46=back 47 48The following algorithms are available in the default provider, but not the 49FIPS provider: 50 51=over 4 52 53=item "AES-128-OCB", "AES-192-OCB" and "AES-256-OCB" 54 55=item "AES-128-SIV", "AES-192-SIV" and "AES-256-SIV" 56 57=item "AES-128-GCM-SIV", "AES-192-GCM-SIV" and "AES-256-GCM-SIV" 58 59=back 60 61=head2 Parameters 62 63This implementation supports the parameters described in 64L<EVP_EncryptInit(3)/PARAMETERS>. 65 66=head1 NOTES 67 68The AES-SIV and AES-WRAP mode implementations do not support streaming. That 69means to obtain correct results there can be only one L<EVP_EncryptUpdate(3)> 70or L<EVP_DecryptUpdate(3)> call after the initialization of the context. 71 72The AES-XTS implementations allow streaming to be performed, but each 73L<EVP_EncryptUpdate(3)> or L<EVP_DecryptUpdate(3)> call requires each input 74to be a multiple of the blocksize. Only the final EVP_EncryptUpdate() or 75EVP_DecryptUpdate() call can optionally have an input that is not a multiple 76of the blocksize but is larger than one block. In that case ciphertext 77stealing (CTS) is used to fill the block. 78 79=head1 SEE ALSO 80 81L<provider-cipher(7)>, L<OSSL_PROVIDER-FIPS(7)>, L<OSSL_PROVIDER-default(7)> 82 83=head1 HISTORY 84 85The GCM-SIV mode ciphers were added in OpenSSL version 3.2. 86 87=head1 COPYRIGHT 88 89Copyright 2021-2023 The OpenSSL Project Authors. All Rights Reserved. 90 91Licensed under the Apache License 2.0 (the "License"). You may not use 92this file except in compliance with the License. You can obtain a copy 93in the file LICENSE in the source distribution or at 94L<https://www.openssl.org/source/license.html>. 95 96=cut 97
