RE: AES encryption block size

2012-03-28 Thread Dave Thompson
> From: owner-openssl-us...@openssl.org On Behalf Of (me) > Sent: Wednesday, 28 March, 2012 20:45 > AES-OFB or AES-CFB or AES-OFB are stream modes [with no padding] Sorry; I meant to write -OFB or -CFB or -CTR. While I'm correcting, -GCM is also a (new) stream mode, implemented in 1.0.1; it d

RE: AES encryption block size

2012-03-28 Thread Dave Thompson
> From: owner-openssl-us...@openssl.org On Behalf Of Alex Chen > Sent: Wednesday, 28 March, 2012 17:50 > When the padding is disabled by setting the padding size to 0 > in EVP_CIPHER_CTX_set_padding(), is the output data block > size the same as the input block size? > Will this reduce the encry

Re: AES encryption block size

2012-03-28 Thread Jakob Bohm
On 3/28/2012 11:49 PM, Alex Chen wrote: When the padding is disabled by setting the padding size to 0 in EVP_CIPHER_CTX_set_padding(), is the output data block size the same as the input block size? Will this reduce the encryption strength? Padding doesn't change the block size at all. Paddin

AES encryption block size

2012-03-28 Thread Alex Chen
When the padding is disabled by setting the padding size to 0 in EVP_CIPHER_CTX_set_padding(), is the output data block size the same as the input block size? Will this reduce the encryption strength? Alex __ OpenSSL Project