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Filesize after using Crypto APIs

Started by noname, August 10, 2015, 06:07:42 PM

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noname

hello,

after you encrypt a file using CryptEncrypt with a block cipher key which has a block size of 8 bytes, filesize increases by 8 bytes. but when you decrypt the encypted file using CryptDecrypt, the filesize of the decrypted file is still bigger than the original file size by 8 bytes. how can i get the original file(=the original filesize) after decrypting?

hutch--

Truncate it to its original size and if necessary, store that size somewhere in the file. Just check the documentation to see if there is a technique to get the unencrypted length.

K_F

Most likely redundant information after decryption.. I'd think  8)
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