Encryption processing apparatus and method for voice over packet networks

A method comprising:

• generating an encoded voice packet from a speech sample, said encoded voice packet having a packet size and a plurality of bytes;
• dividing said encoded voice packet into a plurality of first voice blocks each having a block size, wherein said packet size is not divisible by said block size and yields a remainder;
• creating a plurality of first encrypted voice blocks from said plurality of first voice blocks;
• creating a remainder voice block having said block size and including remainder bytes;
• selecting additional bytes from said plurality of first voice blocks by applying a pre-determined technique to said plurality of first voice blocks;
• including said additional bytes selected from said plurality of first voice blocks in said remainder voice block following said remainder bytes in said remainder voice block;
• and
• creating an encrypted remainder voice block from said remainder voice block.

A computer software product for execution by a controller, the computer software product comprising:

• code for generating an encoded voice packet from a speech sample, said encoded voice packet having a packet size and a plurality of bytes;
• code for dividing said encoded voice packet into a plurality of first voice blocks each having a block size, wherein said packet size is not divisible by said block size and yields a remainder;
• code for creating a plurality of first encrypted voice blocks from said plurality of first voice blocks;
• code for creating a remainder voice block having said block size and including remainder bytes;
• code for selecting additional bytes from said plurality of first voice blocks by applying a pre-determined technique to said plurality of first voice blocks;
• code for including said additional bytes selected from said plurality of first voice blocks in said remainder voice block following said remainder bytes in said remainder voice block;
• and
• code for creating an encrypted remainder voice block from said remainder voice block.