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author | Yen Chi Hsuan <yan12125@gmail.com> | 2017-02-27 18:50:19 +0800 |
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committer | Yen Chi Hsuan <yan12125@gmail.com> | 2017-02-28 22:10:31 +0800 |
commit | f48409c7ac186fa38bbeb2df2b210e37a18eb04b (patch) | |
tree | 8046e12170bfafc7b0e62bd37e968833d1ce1156 /youtube_dl | |
parent | c9619f0a17927086c49e4b443202be296d734a76 (diff) |
[utils] Add pkcs1pad
Used in daisuki.net (#4738)
Diffstat (limited to 'youtube_dl')
-rw-r--r-- | youtube_dl/utils.py | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py index 17b83794a..8bd075eaf 100644 --- a/youtube_dl/utils.py +++ b/youtube_dl/utils.py @@ -3336,6 +3336,21 @@ def ohdave_rsa_encrypt(data, exponent, modulus): return '%x' % encrypted +def pkcs1pad(data, length): + """ + Padding input data with PKCS#1 scheme + + @param {int[]} data input data + @param {int} length target length + @returns {int[]} padded data + """ + if len(data) > length - 11: + raise ValueError('Input data too long for PKCS#1 padding') + + pseudo_random = [random.randint(0, 254) for _ in range(length - len(data) - 3)] + return [0, 2] + pseudo_random + [0] + data + + def encode_base_n(num, n, table=None): FULL_TABLE = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' if not table: |