Thanks!!! I solved with EVP_CIPHER_CTX_set_padding(&ctx,0), and padding the string manually....
On Sun, Apr 5, 2009 at 8:07 AM, Ger Hobbelt <g...@hobbelt.com> wrote: > This has to do with padding, which is at least 1 byte, and always > ensures input + padding is an integer multiple of the block size. > Hence 8 input + 1 byte minimum padding ==> 8 bytes input + 8 bytes padding. > > See what happens when you feed it, for instance, 5 bytes of input: > resulting file should be 8 bytes (des3 blocksize = 8) > > > 2009/4/3 José Hidalgo C. <jhidal...@gmail.com>: > > Hi: > > > > I'm using the openssl and EVP_EncryptInit_ex, EVP_EncryptUpdate, > > EVP_EncryptFinal_ex sequence to encrypt a a short message with 3des-cbc, > but > > i get an strange problem. I expect if the data size is 8 bytes, the > > encrypted data lenght is 8 bytes too, but i get 16 bytes. If the data > size > > is 16 bytes, the encrypted data length is 24 bytes. I'm sure that the > data > > size is 8 bytes, or 16 bytes, but i never get the expeted results, > somebody > > know why? > > The command used in openssl: > > > > openssl des3 -iv 1234567812345678 -K > > 0123456789ABCDEFFEDCBA98765432100123456789ABCDEF -in claro.txt -out > > claro.bin > > > > ls -l show 8 bytes in claro.txt, and 16 bytes in claro.bin > > > > When i use the EVP_EncryptUpdate function, the strlen show 8 bytes in the > > text message. > > > > Thanks. > > > > > > -- > > ------------------------------------------------------------------ > > José Hidalgo C. > > Ingeniero de Software > > Akzio Consultores - http://www.akzio.cl > > Huérfanos 669 of. 609 - Santiago > > Ofi:(+56)(2)6320567 - Cel:(+56)(9)88377088 > > > > > > -- > Met vriendelijke groeten / Best regards, > > Ger Hobbelt > > -------------------------------------------------- > web: http://www.hobbelt.com/ > http://www.hebbut.net/ > mail: g...@hobbelt.com > mobile: +31-6-11 120 978 > -------------------------------------------------- > ______________________________________________________________________ > OpenSSL Project http://www.openssl.org > User Support Mailing List openssl-users@openssl.org > Automated List Manager majord...@openssl.org > -- ------------------------------------------------------------------ José Hidalgo C. Ingeniero de Software Akzio Consultores - http://www.akzio.cl Huérfanos 669 of. 609 - Santiago Ofi:(+56)(2)6320567 - Cel:(+56)(9)88377088
