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_MD-SHA1 - The SHA1 EVP_MD implementation
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6 |
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7 | =head1 DESCRIPTION
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8 |
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9 | Support for computing SHA1 digests through the B<EVP_MD> API.
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10 |
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11 | =head2 Identities
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12 |
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13 | This implementation is available with the FIPS provider as well as the
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14 | default provider, and is identified with the names "SHA1" and "SHA-1".
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15 |
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16 | =head2 Gettable Parameters
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17 |
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18 | This implementation supports the common gettable parameters described
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19 | in L<EVP_MD-common(7)>.
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20 |
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21 | =head2 Settable Context Parameters
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22 |
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23 | This implementation supports the following L<OSSL_PARAM(3)> entries,
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24 | settable for an B<EVP_MD_CTX> with L<EVP_MD_CTX_set_params(3)>:
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25 |
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26 | =over 4
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27 |
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28 | =item "ssl3-ms" (B<OSSL_DIGEST_PARAM_SSL3_MS>) <octet string>
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29 |
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30 | This parameter is set by libssl in order to calculate a signature hash for an
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31 | SSLv3 CertificateVerify message as per RFC6101.
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32 | It is only set after all handshake messages have already been digested via
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33 | OP_digest_update() calls.
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34 | The parameter provides the master secret value to be added to the digest.
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35 | The digest implementation should calculate the complete digest as per RFC6101
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36 | section 5.6.8.
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37 | The next call after setting this parameter should be OP_digest_final().
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38 |
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39 | =back
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40 |
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41 | =head1 SEE ALSO
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42 |
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43 | L<EVP_MD_CTX_set_params(3)>, L<provider-digest(7)>,
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44 | L<OSSL_PROVIDER-FIPS(7)>, L<OSSL_PROVIDER-default(7)>
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45 |
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46 | =head1 COPYRIGHT
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47 |
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48 | Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
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49 |
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50 | Licensed under the Apache License 2.0 (the "License"). You may not use
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51 | this file except in compliance with the License. You can obtain a copy
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52 | in the file LICENSE in the source distribution or at
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53 | L<https://www.openssl.org/source/license.html>.
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54 |
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55 | =cut
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