Thanks Les, that's very helpful, I wouldn't have known about the additional IV piece.
I ran some performance tests, thought I would share here in case anybody else is curious. This is using an AES-256 bit key (instead of the default 128). You'll note the encoding/decoding is incredibly fast (this is running locally on my late-2011 MBP), which was great news for my app. Columns: 1) string size 2) encoded string size 3) time to encode in msec 4) time to decode in msec | 0 | 32 | 18 | 1 | | 0 | 32 | 1 | 0 | | 1 | 32 | 1 | 0 | | 1 | 32 | 0 | 0 | | 2 | 32 | 0 | 1 | | 2 | 32 | 0 | 1 | | 3 | 32 | 0 | 1 | | 3 | 32 | 0 | 1 | | 4 | 32 | 0 | 0 | | 4 | 32 | 0 | 1 | | 5 | 32 | 0 | 1 | | 5 | 32 | 1 | 0 | | 6 | 32 | 1 | 0 | | 6 | 32 | 1 | 0 | | 7 | 32 | 1 | 0 | | 7 | 32 | 0 | 1 | | 8 | 32 | 1 | 0 | | 8 | 32 | 1 | 0 | | 9 | 32 | 1 | 0 | | 9 | 32 | 1 | 0 | | 10 | 32 | 1 | 0 | | 10 | 32 | 1 | 0 | | 11 | 32 | 0 | 0 | | 11 | 32 | 0 | 0 | | 12 | 32 | 0 | 1 | | 12 | 32 | 0 | 1 | | 13 | 32 | 1 | 0 | | 13 | 32 | 1 | 0 | | 14 | 32 | 1 | 0 | | 14 | 32 | 1 | 0 | | 15 | 32 | 0 | 1 | | 15 | 32 | 1 | 0 | | 16 | 48 | 0 | 0 | | 16 | 48 | 0 | 0 | | 17 | 48 | 0 | 1 | | 17 | 48 | 0 | 1 | | 18 | 48 | 0 | 1 | | 18 | 48 | 1 | 0 | | 19 | 48 | 0 | 1 | | 19 | 48 | 1 | 0 | | 20 | 48 | 0 | 1 | | 20 | 48 | 1 | 0 | | 21 | 48 | 0 | 1 | | 21 | 48 | 0 | 1 | | 22 | 48 | 1 | 0 | | 22 | 48 | 4 | 1 | | 23 | 48 | 1 | 0 | | 23 | 48 | 1 | 0 | | 24 | 48 | 0 | 0 | | 24 | 48 | 0 | 1 | | 25 | 48 | 1 | 0 | | 25 | 48 | 0 | 0 | | 26 | 48 | 0 | 0 | | 26 | 48 | 0 | 0 | | 27 | 48 | 0 | 1 | | 27 | 48 | 0 | 1 | | 28 | 48 | 0 | 1 | | 28 | 48 | 0 | 1 | | 29 | 48 | 1 | 0 | | 29 | 48 | 0 | 1 | | 30 | 48 | 1 | 0 | | 30 | 48 | 0 | 1 | | 31 | 48 | 1 | 0 | | 31 | 48 | 1 | 0 | | 32 | 64 | 0 | 1 | | 32 | 64 | 1 | 0 | | 33 | 64 | 0 | 1 | | 33 | 64 | 0 | 0 | | 34 | 64 | 0 | 1 | | 34 | 64 | 0 | 1 | | 35 | 64 | 0 | 1 | | 35 | 64 | 0 | 1 | | 36 | 64 | 0 | 1 | | 36 | 64 | 0 | 0 | | 37 | 64 | 0 | 0 | | 37 | 64 | 0 | 0 | | 38 | 64 | 0 | 0 | | 38 | 64 | 0 | 0 | | 39 | 64 | 1 | 0 | | 39 | 64 | 1 | 0 | | 40 | 64 | 1 | 0 | | 40 | 64 | 1 | 0 | | 41 | 64 | 0 | 1 | | 41 | 64 | 0 | 1 | | 42 | 64 | 0 | 1 | | 42 | 64 | 0 | 1 | | 43 | 64 | 0 | 1 | | 43 | 64 | 0 | 1 | | 44 | 64 | 0 | 1 | | 44 | 64 | 0 | 0 | | 45 | 64 | 0 | 0 | | 45 | 64 | 0 | 1 | | 46 | 64 | 0 | 1 | | 46 | 64 | 0 | 1 | | 47 | 64 | 0 | 1 | | 47 | 64 | 0 | 1 | | 48 | 80 | 1 | 0 | | 48 | 80 | 1 | 0 | | 49 | 80 | 1 | 0 | | 49 | 80 | 1 | 0 | | 50 | 80 | 1 | 0 | | 50 | 80 | 1 | 0 | | 51 | 80 | 1 | 0 | | 51 | 80 | 0 | 1 | | 52 | 80 | 0 | 1 | | 52 | 80 | 1 | 0 | | 53 | 80 | 1 | 0 | | 53 | 80 | 1 | 0 | | 54 | 80 | 1 | 0 | | 54 | 80 | 1 | 0 | | 55 | 80 | 1 | 0 | | 55 | 80 | 1 | 0 | | 56 | 80 | 0 | 0 | | 56 | 80 | 0 | 0 | | 57 | 80 | 0 | 0 | | 57 | 80 | 0 | 1 | | 58 | 80 | 0 | 1 | | 58 | 80 | 1 | 0 | | 59 | 80 | 0 | 1 | | 59 | 80 | 0 | 1 | | 60 | 80 | 1 | 0 | | 60 | 80 | 1 | 0 | | 61 | 80 | 0 | 0 | | 61 | 80 | 1 | 0 | | 62 | 80 | 0 | 0 | | 62 | 80 | 0 | 0 | | 63 | 80 | 0 | 0 | | 63 | 80 | 0 | 0 | | 64 | 96 | 0 | 0 | | 64 | 96 | 0 | 0 | | 65 | 96 | 0 | 0 | | 65 | 96 | 0 | 0 | | 66 | 96 | 0 | 1 | | 66 | 96 | 0 | 1 | | 67 | 96 | 0 | 1 | | 67 | 96 | 0 | 1 | | 68 | 96 | 0 | 1 | | 68 | 96 | 0 | 0 | | 69 | 96 | 0 | 0 | | 69 | 96 | 0 | 0 | | 70 | 96 | 0 | 0 | | 70 | 96 | 1 | 0 | | 71 | 96 | 1 | 0 | | 71 | 96 | 0 | 1 | | 72 | 96 | 0 | 1 | | 72 | 96 | 0 | 1 | | 73 | 96 | 0 | 0 | | 73 | 96 | 0 | 0 | | 74 | 96 | 0 | 0 | | 74 | 96 | 1 | 0 | | 75 | 96 | 1 | 0 | | 75 | 96 | 1 | 0 | | 76 | 96 | 1 | 0 | | 76 | 96 | 0 | 1 | | 77 | 96 | 1 | 0 | | 77 | 96 | 1 | 0 | | 78 | 96 | 1 | 0 | | 78 | 96 | 1 | 0 | | 79 | 96 | 1 | 0 | | 79 | 96 | 1 | 0 | | 80 | 112 | 0 | 1 | | 80 | 112 | 1 | 0 | | 81 | 112 | 1 | 0 | | 81 | 112 | 1 | 0 | | 82 | 112 | 1 | 0 | | 82 | 112 | 1 | 0 | | 83 | 112 | 0 | 0 | | 83 | 112 | 1 | 0 | | 84 | 112 | 1 | 0 | | 84 | 112 | 1 | 0 | | 85 | 112 | 1 | 0 | | 85 | 112 | 1 | 0 | | 86 | 112 | 1 | 0 | | 86 | 112 | 0 | 1 | | 87 | 112 | 0 | 1 | | 87 | 112 | 0 | 0 | | 88 | 112 | 0 | 0 | | 88 | 112 | 0 | 0 | | 89 | 112 | 0 | 1 | | 89 | 112 | 0 | 1 | | 90 | 112 | 0 | 1 | | 90 | 112 | 0 | 1 | | 91 | 112 | 1 | 0 | | 91 | 112 | 1 | 0 | | 92 | 112 | 1 | 0 | | 92 | 112 | 1 | 0 | | 93 | 112 | 1 | 0 | | 93 | 112 | 0 | 1 | | 94 | 112 | 0 | 0 | | 94 | 112 | 0 | 0 | | 95 | 112 | 0 | 1 | | 95 | 112 | 0 | 1 | | 96 | 128 | 1 | 0 | | 96 | 128 | 1 | 0 | | 97 | 128 | 0 | 0 | | 97 | 128 | 0 | 0 | | 98 | 128 | 0 | 1 | | 98 | 128 | 0 | 1 | | 99 | 128 | 1 | 0 | | 99 | 128 | 1 | 0 | -- View this message in context: http://shiro-user.582556.n2.nabble.com/Size-of-encrypted-text-tp7577530p7577549.html Sent from the Shiro User mailing list archive at Nabble.com.
