Encrypt or decrypt a buffer using a previously initialized context.
@param count number of 16 byte blocks
@param dst destination array, can be equal to src
@param src source array, can be equal to dst
@param iv initialization vector for CBC mode, if NULL then ECB will be used
@param decrypt 0 for encryption, 1 for decryption
Encrypt or decrypt a buffer using a previously initialized context. @param count number of 16 byte blocks @param dst destination array, can be equal to src @param src source array, can be equal to dst @param iv initialization vector for CBC mode, if NULL then ECB will be used @param decrypt 0 for encryption, 1 for decryption