Hello,

Will there ever be CTS support in openssl ?

Its currently not possible to implement it as a EVP_CIPHER mech since that EVP_CIPHER mech is not expressive enough. ->do_cipher doesn't know if its the last block or not, EVP_EncryptUpdate() will always encrypt data if its on a blocksize boundery.

There is a patch in http://rt.openssl.org/index.html?q=1482 but it doesn't seem to get much love from the openssl developers, its been sitting there for a 1.5 years and is still "new" state.

So, will openssl ever support CTS mode ?

Love

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