forked from AFPy/python-docs-fr
475 lines
15 KiB
Plaintext
475 lines
15 KiB
Plaintext
# SOME DESCRIPTIVE TITLE.
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# Copyright (C) 2001-2016, Python Software Foundation
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# This file is distributed under the same license as the Python package.
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# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
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#
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#, fuzzy
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msgid ""
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msgstr ""
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"Project-Id-Version: Python 3.6\n"
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"Report-Msgid-Bugs-To: \n"
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"POT-Creation-Date: 2016-10-30 10:40+0100\n"
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"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
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"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
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"Language-Team: LANGUAGE <LL@li.org>\n"
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"MIME-Version: 1.0\n"
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"Content-Type: text/plain; charset=UTF-8\n"
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"Content-Transfer-Encoding: 8bit\n"
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#: ../Doc/library/hashlib-blake2.rst:4
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msgid ":mod:`hashlib` --- BLAKE2 hash functions"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:13
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msgid ""
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"BLAKE2_ is a cryptographic hash function defined in RFC-7693_ that comes in "
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"two flavors:"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:16
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msgid ""
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"**BLAKE2b**, optimized for 64-bit platforms and produces digests of any size "
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"between 1 and 64 bytes,"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:19
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msgid ""
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"**BLAKE2s**, optimized for 8- to 32-bit platforms and produces digests of "
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"any size between 1 and 32 bytes."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:22
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msgid ""
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"BLAKE2 supports **keyed mode** (a faster and simpler replacement for HMAC_), "
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"**salted hashing**, **personalization**, and **tree hashing**."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:25
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msgid ""
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"Hash objects from this module follow the API of standard library's :mod:"
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"`hashlib` objects."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:30
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msgid "Module"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:33
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msgid "Creating hash objects"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:35
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msgid "New hash objects are created by calling constructor functions:"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:47
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msgid ""
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"These functions return the corresponding hash objects for calculating "
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"BLAKE2b or BLAKE2s. They optionally take these general parameters:"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:50
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msgid ""
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"*data*: initial chunk of data to hash, which must be interpretable as buffer "
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"of bytes."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:53
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msgid "*digest_size*: size of output digest in bytes."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:55
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msgid ""
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"*key*: key for keyed hashing (up to 64 bytes for BLAKE2b, up to 32 bytes for "
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"BLAKE2s)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:58
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msgid ""
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"*salt*: salt for randomized hashing (up to 16 bytes for BLAKE2b, up to 8 "
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"bytes for BLAKE2s)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:61
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msgid ""
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"*person*: personalization string (up to 16 bytes for BLAKE2b, up to 8 bytes "
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"for BLAKE2s)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:64
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msgid "The following table shows limits for general parameters (in bytes):"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:67
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msgid "Hash"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:67
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msgid "digest_size"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:67
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msgid "len(key)"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:67
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msgid "len(salt)"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:67
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msgid "len(person)"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:69
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msgid "BLAKE2b"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:69
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msgid "64"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:69
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msgid "16"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:70
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msgid "BLAKE2s"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:70
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msgid "32"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:70
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msgid "8"
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msgstr "8"
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#: ../Doc/library/hashlib-blake2.rst:75
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msgid ""
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"BLAKE2 specification defines constant lengths for salt and personalization "
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"parameters, however, for convenience, this implementation accepts byte "
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"strings of any size up to the specified length. If the length of the "
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"parameter is less than specified, it is padded with zeros, thus, for "
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"example, ``b'salt'`` and ``b'salt\\x00'`` is the same value. (This is not "
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"the case for *key*.)"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:82
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msgid "These sizes are available as module `constants`_ described below."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:84
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msgid ""
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"Constructor functions also accept the following tree hashing parameters:"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:86
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msgid "*fanout*: fanout (0 to 255, 0 if unlimited, 1 in sequential mode)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:88
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msgid ""
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"*depth*: maximal depth of tree (1 to 255, 255 if unlimited, 1 in sequential "
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"mode)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:91
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msgid ""
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"*leaf_size*: maximal byte length of leaf (0 to 2**32-1, 0 if unlimited or in "
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"sequential mode)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:94
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msgid ""
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"*node_offset*: node offset (0 to 2**64-1 for BLAKE2b, 0 to 2**48-1 for "
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"BLAKE2s, 0 for the first, leftmost, leaf, or in sequential mode)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:97
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msgid ""
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"*node_depth*: node depth (0 to 255, 0 for leaves, or in sequential mode)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:99
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msgid ""
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"*inner_size*: inner digest size (0 to 64 for BLAKE2b, 0 to 32 for BLAKE2s, 0 "
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"in sequential mode)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:102
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msgid ""
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"*last_node*: boolean indicating whether the processed node is the last one "
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"(`False` for sequential mode)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:108
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msgid ""
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"See section 2.10 in `BLAKE2 specification <https://blake2.net/"
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"blake2_20130129.pdf>`_ for comprehensive review of tree hashing."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:114
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msgid "Constants"
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msgstr "Constantes"
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#: ../Doc/library/hashlib-blake2.rst:119
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msgid "Salt length (maximum length accepted by constructors)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:125
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msgid ""
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"Personalization string length (maximum length accepted by constructors)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:131
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msgid "Maximum key size."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:137
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msgid "Maximum digest size that the hash function can output."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:141
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msgid "Examples"
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msgstr "Exemples"
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#: ../Doc/library/hashlib-blake2.rst:144
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msgid "Simple hashing"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:146
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msgid ""
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"To calculate hash of some data, you should first construct a hash object by "
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"calling the appropriate constructor function (:func:`blake2b` or :func:"
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"`blake2s`), then update it with the data by calling :meth:`update` on the "
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"object, and, finally, get the digest out of the object by calling :meth:"
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"`digest` (or :meth:`hexdigest` for hex-encoded string)."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:159
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msgid ""
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"As a shortcut, you can pass the first chunk of data to update directly to "
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"the constructor as the first argument (or as *data* keyword argument):"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:166
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msgid ""
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"You can call :meth:`hash.update` as many times as you need to iteratively "
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"update the hash:"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:179
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msgid "Using different digest sizes"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:181
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msgid ""
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"BLAKE2 has configurable size of digests up to 64 bytes for BLAKE2b and up to "
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"32 bytes for BLAKE2s. For example, to replace SHA-1 with BLAKE2b without "
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"changing the size of output, we can tell BLAKE2b to produce 20-byte digests:"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:195
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msgid ""
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"Hash objects with different digest sizes have completely different outputs "
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"(shorter hashes are *not* prefixes of longer hashes); BLAKE2b and BLAKE2s "
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"produce different outputs even if the output length is the same:"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:211
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msgid "Keyed hashing"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:213
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msgid ""
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"Keyed hashing can be used for authentication as a faster and simpler "
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"replacement for `Hash-based message authentication code <http://en.wikipedia."
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"org/wiki/Hash-based_message_authentication_code>`_ (HMAC). BLAKE2 can be "
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"securely used in prefix-MAC mode thanks to the indifferentiability property "
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"inherited from BLAKE."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:219
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msgid ""
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"This example shows how to get a (hex-encoded) 128-bit authentication code "
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"for message ``b'message data'`` with key ``b'pseudorandom key'``::"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:229
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msgid ""
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"As a practical example, a web application can symmetrically sign cookies "
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"sent to users and later verify them to make sure they weren't tampered with::"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:253
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msgid ""
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"Even though there's a native keyed hashing mode, BLAKE2 can, of course, be "
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"used in HMAC construction with :mod:`hmac` module::"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:264
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msgid "Randomized hashing"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:266
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msgid ""
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"By setting *salt* parameter users can introduce randomization to the hash "
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"function. Randomized hashing is useful for protecting against collision "
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"attacks on the hash function used in digital signatures."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:270
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msgid ""
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"Randomized hashing is designed for situations where one party, the message "
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"preparer, generates all or part of a message to be signed by a second party, "
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"the message signer. If the message preparer is able to find cryptographic "
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"hash function collisions (i.e., two messages producing the same hash value), "
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"then she might prepare meaningful versions of the message that would produce "
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"the same hash value and digital signature, but with different results (e.g., "
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"transferring $1,000,000 to an account, rather than $10). Cryptographic hash "
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"functions have been designed with collision resistance as a major goal, but "
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"the current concentration on attacking cryptographic hash functions may "
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"result in a given cryptographic hash function providing less collision "
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"resistance than expected. Randomized hashing offers the signer additional "
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"protection by reducing the likelihood that a preparer can generate two or "
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"more messages that ultimately yield the same hash value during the digital "
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"signature generation process – even if it is practical to find collisions "
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"for the hash function. However, the use of randomized hashing may reduce the "
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"amount of security provided by a digital signature when all portions of the "
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"message are prepared by the signer."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:289
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msgid ""
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"(`NIST SP-800-106 \"Randomized Hashing for Digital Signatures\" <http://csrc."
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"nist.gov/publications/nistpubs/800-106/NIST-SP-800-106.pdf>`_)"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:292
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msgid ""
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"In BLAKE2 the salt is processed as a one-time input to the hash function "
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"during initialization, rather than as an input to each compression function."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:297
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msgid ""
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"*Salted hashing* (or just hashing) with BLAKE2 or any other general-purpose "
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"cryptographic hash function, such as SHA-256, is not suitable for hashing "
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"passwords. See `BLAKE2 FAQ <https://blake2.net/#qa>`_ for more information."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:320
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msgid "Personalization"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:322
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msgid ""
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"Sometimes it is useful to force hash function to produce different digests "
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"for the same input for different purposes. Quoting the authors of the Skein "
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"hash function:"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:326
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msgid ""
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"We recommend that all application designers seriously consider doing this; "
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"we have seen many protocols where a hash that is computed in one part of the "
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"protocol can be used in an entirely different part because two hash "
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"computations were done on similar or related data, and the attacker can "
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"force the application to make the hash inputs the same. Personalizing each "
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"hash function used in the protocol summarily stops this type of attack."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:333
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msgid ""
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"(`The Skein Hash Function Family <http://www.skein-hash.info/sites/default/"
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"files/skein1.3.pdf>`_, p. 21)"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:337
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msgid "BLAKE2 can be personalized by passing bytes to the *person* argument::"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:351
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msgid ""
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"Personalization together with the keyed mode can also be used to derive "
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"different keys from a single one."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:365
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msgid "Tree mode"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:367
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msgid "Here's an example of hashing a minimal tree with two leaf nodes::"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:373
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msgid ""
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"This example uses 64-byte internal digests, and returns the 32-byte final "
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"digest::"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:403
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msgid "Credits"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:405
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msgid ""
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"BLAKE2_ was designed by *Jean-Philippe Aumasson*, *Samuel Neves*, *Zooko "
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"Wilcox-O'Hearn*, and *Christian Winnerlein* based on SHA-3_ finalist BLAKE_ "
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"created by *Jean-Philippe Aumasson*, *Luca Henzen*, *Willi Meier*, and "
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"*Raphael C.-W. Phan*."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:410
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msgid ""
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"It uses core algorithm from ChaCha_ cipher designed by *Daniel J. "
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"Bernstein*."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:412
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msgid ""
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"The stdlib implementation is based on pyblake2_ module. It was written by "
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"*Dmitry Chestnykh* based on C implementation written by *Samuel Neves*. The "
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"documentation was copied from pyblake2_ and written by *Dmitry Chestnykh*."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:416
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msgid "The C code was partly rewritten for Python by *Christian Heimes*."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:418
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msgid ""
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"The following public domain dedication applies for both C hash function "
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"implementation, extension code, and this documentation:"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:421
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msgid ""
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"To the extent possible under law, the author(s) have dedicated all copyright "
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"and related and neighboring rights to this software to the public domain "
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"worldwide. This software is distributed without any warranty."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:425
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msgid ""
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"You should have received a copy of the CC0 Public Domain Dedication along "
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"with this software. If not, see http://creativecommons.org/publicdomain/"
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"zero/1.0/."
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:429
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msgid ""
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"The following people have helped with development or contributed their "
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"changes to the project and the public domain according to the Creative "
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"Commons Public Domain Dedication 1.0 Universal:"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:433
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msgid "*Alexandr Sokolovskiy*"
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msgstr ""
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#: ../Doc/library/hashlib-blake2.rst:435
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msgid "Official BLAKE2 website: https://blake2.net"
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msgstr ""
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