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avoid losing the key

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if we just have a pointer to a bytes object which might go out of scope, we can lose it.

also: cython can directly assign a bytes object into a same-size char array.
This commit is contained in:
Thomas Waldmann 2022-03-20 05:15:39 +01:00
parent 41082f558f
commit 6d6d3caa24
1 changed files with 2 additions and 3 deletions
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5
src/borg/crypto/low_level.pyx
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@ -428,7 +428,7 @@ cdef class _AEAD_BASE:
cdef CIPHER cipher cdef CIPHER cipher
cdef EVP_CIPHER_CTX *ctx cdef EVP_CIPHER_CTX *ctx
cdef unsigned char *key cdef unsigned char key[32]
cdef int cipher_blk_len cdef int cipher_blk_len
cdef int iv_len cdef int iv_len
cdef int aad_offset cdef int aad_offset
@ -587,8 +587,7 @@ cdef class _AEAD_BASE:
if isinstance(iv, int): if isinstance(iv, int):
iv = iv.to_bytes(self.iv_len, byteorder='big') iv = iv.to_bytes(self.iv_len, byteorder='big')
assert isinstance(iv, bytes) and len(iv) == self.iv_len assert isinstance(iv, bytes) and len(iv) == self.iv_len
for i in range(self.iv_len): self.iv = iv
self.iv[i] = iv[i]
self.blocks = 0 # number of cipher blocks encrypted with this IV self.blocks = 0 # number of cipher blocks encrypted with this IV
def next_iv(self): def next_iv(self):