tests/AESTest.R

In digest: Create cryptographic hash digests of R objects

## tests for AES, taken from the examples in the manual page

stopifnot(require(digest))

# FIPS-197 examples

hextextToRaw <- function(text) {
  vals <- matrix(as.integer(as.hexmode(strsplit(text, "")[[1]])), ncol=2, byrow=TRUE)
  vals <- vals %*% c(16, 1)
  as.raw(vals)
}

plaintext       <- hextextToRaw("00112233445566778899aabbccddeeff")

aes128key       <- hextextToRaw("000102030405060708090a0b0c0d0e0f")
aes128output    <- hextextToRaw("69c4e0d86a7b0430d8cdb78070b4c55a")
aes <- AES(aes128key)
aes128 <- aes$encrypt(plaintext)
aes128
stopifnot(identical(aes128, aes128output))
stopifnot(identical(plaintext, aes$decrypt(aes128, raw=TRUE)))

aes192key       <- hextextToRaw("000102030405060708090a0b0c0d0e0f1011121314151617")
aes192output    <- hextextToRaw("dda97ca4864cdfe06eaf70a0ec0d7191")
aes <- AES(aes192key)
aes192 <- aes$encrypt(plaintext)
aes192
stopifnot(identical(aes192, aes192output))
stopifnot(identical(plaintext, aes$decrypt(aes192, raw=TRUE)))

aes256key       <- hextextToRaw("000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f")
aes256output     <- hextextToRaw("8ea2b7ca516745bfeafc49904b496089")
aes <- AES(aes256key)
aes256 <- aes$encrypt(plaintext)
aes256
stopifnot(identical(aes256, aes256output))
stopifnot(identical(plaintext, aes$decrypt(aes256, raw=TRUE)))

# SP800-38a examples

plaintext <- hextextToRaw(paste("6bc1bee22e409f96e93d7e117393172a",
                                "ae2d8a571e03ac9c9eb76fac45af8e51",
                                "30c81c46a35ce411e5fbc1191a0a52ef",
                                "f69f2445df4f9b17ad2b417be66c3710",sep=""))
key <- hextextToRaw("2b7e151628aed2a6abf7158809cf4f3c")

ecb128output <- hextextToRaw(paste("3ad77bb40d7a3660a89ecaf32466ef97",
                                   "f5d3d58503b9699de785895a96fdbaaf",
                                   "43b1cd7f598ece23881b00e3ed030688",
                                   "7b0c785e27e8ad3f8223207104725dd4",sep=""))
aes <- AES(key)
ecb128 <- aes$encrypt(plaintext)
ecb128
stopifnot(identical(ecb128, ecb128output))
stopifnot(identical(plaintext, aes$decrypt(ecb128, raw=TRUE)))

cbc128output <- hextextToRaw(paste("7649abac8119b246cee98e9b12e9197d",
                                    "5086cb9b507219ee95db113a917678b2",
                                    "73bed6b8e3c1743b7116e69e22229516",
                                    "3ff1caa1681fac09120eca307586e1a7",sep=""))
iv <- hextextToRaw("000102030405060708090a0b0c0d0e0f")
aes <- AES(key, mode="CBC", IV=iv)
cbc128 <- aes$encrypt(plaintext)
cbc128
stopifnot(identical(cbc128, cbc128output))
aes <- AES(key, mode="CBC", IV=iv)
stopifnot(identical(plaintext, aes$decrypt(cbc128, raw=TRUE)))

ctr128output <- hextextToRaw(paste("874d6191b620e3261bef6864990db6ce",
                                   "9806f66b7970fdff8617187bb9fffdff",
                                   "5ae4df3edbd5d35e5b4f09020db03eab",
                                   "1e031dda2fbe03d1792170a0f3009cee",sep=""))
iv <- hextextToRaw("f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff")
aes <- AES(key, mode="CTR", IV=iv)
ctr128 <- aes$encrypt(plaintext)
ctr128
stopifnot(identical(ctr128, ctr128output))
aes <- AES(key, mode="CTR", IV=iv)
stopifnot(identical(plaintext, aes$decrypt(ctr128, raw=TRUE)))