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(EC)DSA signature fix #670

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merged 4 commits into from
Jul 20, 2017
Merged

(EC)DSA signature fix #670

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8cb1d25
Write a test - signatures with EC keys (#609)
Jul 19, 2017
36f8d81
Ask for signature length before allocating a buffer.
Jul 19, 2017
0be1eee
change approach to EVP_PKEY_size and add changelog
reaperhulk Jul 20, 2017
e9b6f82
add a small assert
reaperhulk Jul 20, 2017
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add a small assert
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@reaperhulk
reaperhulk committed Jul 20, 2017
commit e9b6f8259494bcc4488abc4474db69d4c3211ece
1 change: 1 addition & 0 deletions src/OpenSSL/crypto.py
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Expand Up @@ -2802,6 +2802,7 @@ def sign(pkey, data, digest):
_lib.EVP_SignUpdate(md_ctx, data, len(data))

length = _lib.EVP_PKEY_size(pkey._pkey)
_openssl_assert(length > 0)
signature_buffer = _ffi.new("unsigned char[]", length)
signature_length = _ffi.new("unsigned int *")
final_result = _lib.EVP_SignFinal(
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