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CFB/OFB did not require padding, fix examples.

This commit is contained in:
cheatfate 2018-10-23 13:33:13 +03:00
parent 5791f38639
commit 4899f89f8e
2 changed files with 24 additions and 42 deletions
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33
examples/cfb.nim
View File

@ -23,14 +23,11 @@ block:
var ectx, dctx: CFB[aes256]
var key: array[aes256.sizeKey, byte]
var iv: array[aes256.sizeBlock, byte]
var plainText: array[aes256.sizeBlock * 2, byte]
var encText: array[aes256.sizeBlock * 2, byte]
var decText: array[aes256.sizeBlock * 2, byte]
var plainText = newSeq[byte](len(aliceData))
var encText = newSeq[byte](len(aliceData))
var decText = newSeq[byte](len(aliceData))
# AES256 block size is 128 bits or 16 bytes, so we need to pad plaintext with
# 0 bytes.
# WARNING! Do not use 0 byte padding in applications, this is done
# as example.
# We do not need to pad data, `CFB` mode works byte by byte.
copyMem(addr plainText[0], addr aliceData[0], len(aliceData))
# AES256 key size is 256 bits or 32 bytes, so we need to pad key with
@ -70,9 +67,9 @@ block:
var ectx, dctx: CFB[aes256]
var key: array[aes256.sizeKey, byte]
var iv: array[aes256.sizeBlock, byte]
var plainText: array[aes256.sizeBlock * 2, byte]
var encText: array[aes256.sizeBlock * 2, byte]
var decText: array[aes256.sizeBlock * 2, byte]
var plainText = newSeq[byte](len(aliceData))
var encText = newSeq[byte](len(aliceData))
var decText = newSeq[byte](len(aliceData))
var ptrKey = cast[ptr byte](addr key[0])
var ptrPlainText = cast[ptr byte](addr plainText[0])
@ -81,10 +78,7 @@ block:
var ptrIv = cast[ptr byte](addr iv[0])
let dataLen = uint(len(plainText))
# AES256 block size is 128 bits or 16 bytes, so we need to pad plaintext with
# 0 bytes.
# WARNING! Do not use 0 byte padding in applications, this is done
# as example.
# We do not need to pad data, `CFB` mode works byte by byte.
copyMem(addr plainText[0], addr aliceData[0], len(aliceData))
# AES256 key size is 256 bits or 32 bytes, so we need to pad key with
@ -123,14 +117,11 @@ block:
var ectx, dctx: CFB[aes256]
var key = newString(aes256.sizeKey)
var iv = newString(aes256.sizeBlock)
var plainText = newString(aes256.sizeBlock * 2)
var encText = newString(aes256.sizeBlock * 2)
var decText = newString(aes256.sizeBlock * 2)
var plainText = aliceData
var encText = newString(len(aliceData))
var decText = newString(len(aliceData))
# AES256 block size is 128 bits or 16 bytes, so we need to pad plaintext with
# 0 bytes.
# WARNING! Do not use 0 byte padding in applications, this is done
# as example.
# We do not need to pad data, `CFB` mode works byte by byte.
copyMem(addr plainText[0], addr aliceData[0], len(aliceData))
# AES256 key size is 256 bits or 32 bytes, so we need to pad key with

33
examples/ofb.nim
View File

@ -23,14 +23,11 @@ block:
var ectx, dctx: OFB[aes256]
var key: array[aes256.sizeKey, byte]
var iv: array[aes256.sizeBlock, byte]
var plainText: array[aes256.sizeBlock * 2, byte]
var encText: array[aes256.sizeBlock * 2, byte]
var decText: array[aes256.sizeBlock * 2, byte]
var plainText = newSeq[byte](len(aliceData))
var encText = newSeq[byte](len(aliceData))
var decText = newSeq[byte](len(aliceData))
# AES256 block size is 128 bits or 16 bytes, so we need to pad plaintext with
# 0 bytes.
# WARNING! Do not use 0 byte padding in applications, this is done
# as example.
# We do not need to pad data, `OFB` mode works byte by byte.
copyMem(addr plainText[0], addr aliceData[0], len(aliceData))
# AES256 key size is 256 bits or 32 bytes, so we need to pad key with
@ -70,9 +67,9 @@ block:
var ectx, dctx: OFB[aes256]
var key: array[aes256.sizeKey, byte]
var iv: array[aes256.sizeBlock, byte]
var plainText: array[aes256.sizeBlock * 2, byte]
var encText: array[aes256.sizeBlock * 2, byte]
var decText: array[aes256.sizeBlock * 2, byte]
var plainText = newSeq[byte](len(aliceData))
var encText = newSeq[byte](len(aliceData))
var decText = newSeq[byte](len(aliceData))
var ptrKey = cast[ptr byte](addr key[0])
var ptrPlainText = cast[ptr byte](addr plainText[0])
@ -81,10 +78,7 @@ block:
var ptrIv = cast[ptr byte](addr iv[0])
let dataLen = uint(len(plainText))
# AES256 block size is 128 bits or 16 bytes, so we need to pad plaintext with
# 0 bytes.
# WARNING! Do not use 0 byte padding in applications, this is done
# as example.
# We do not need to pad data, `OFB` mode works byte by byte.
copyMem(addr plainText[0], addr aliceData[0], len(aliceData))
# AES256 key size is 256 bits or 32 bytes, so we need to pad key with
@ -123,14 +117,11 @@ block:
var ectx, dctx: OFB[aes256]
var key = newString(aes256.sizeKey)
var iv = newString(aes256.sizeBlock)
var plainText = newString(aes256.sizeBlock * 2)
var encText = newString(aes256.sizeBlock * 2)
var decText = newString(aes256.sizeBlock * 2)
var plainText = aliceData
var encText = newString(len(aliceData))
var decText = newString(len(aliceData))
# AES256 block size is 128 bits or 16 bytes, so we need to pad plaintext with
# 0 bytes.
# WARNING! Do not use 0 byte padding in applications, this is done
# as example.
# We do not need to pad data, `OFB` mode works byte by byte.
copyMem(addr plainText[0], addr aliceData[0], len(aliceData))
# AES256 key size is 256 bits or 32 bytes, so we need to pad key with