>Moved from home > topics > microsoft access / vba > insights > aes encryption algorithm for vba and vbscript
Hi I have been trying out this code converted to encrypt strings from cells in a spreadsheet, however I find certain strings don't encrypt correctly. Removing null characters helped some, but other strings don't seem to encrypt correctly. - Function keyScheduleCore(ByRef row(), ByVal a, ByRef box() As Variant, ByRef rcon() As Variant)
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Dim result(4), i
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For i = 0 To 3
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result(i) = box(row((i + 5) Mod 4))
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Next
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result(0) = result(0) Xor rcon(a)
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keyScheduleCore = result
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End Function
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Function expandKey(ByRef key() As Double, ByRef box() As Variant, ByRef rcon() As Variant)
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'MOD added () to array variables
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Dim rConIter, temp(), i, result(240)
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ReDim temp(4)
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rConIter = 1
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For i = 0 To 31
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result(i) = key(i)
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Next
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For i = 32 To 239 Step 4
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temp(0) = result(i - 4)
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temp(1) = result(i - 3)
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temp(2) = result(i - 2)
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temp(3) = result(i - 1)
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If i Mod 32 = 0 Then
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temp = keyScheduleCore(temp, rConIter, box, rcon)
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rConIter = rConIter + 1
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End If
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If i Mod 32 = 16 Then
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temp(0) = box(temp(0))
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temp(1) = box(temp(1))
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temp(2) = box(temp(2))
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temp(3) = box(temp(3))
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End If
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result(i) = result(i - 32) Xor temp(0)
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result(i + 1) = result(i - 31) Xor temp(1)
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result(i + 2) = result(i - 30) Xor temp(2)
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result(i + 3) = result(i - 29) Xor temp(3)
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Next
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expandKey = result
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End Function
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Function stringAES(sPlain As String, sPass As String, Optional sNonce As String)
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''
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''Based on code by Rabbit
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'http://bytes.com/topic/access/insights/906850-aes-encryption-algorithm-vba-vbscript
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'See the ECM version for the changes
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Dim sbox() As Variant, sboxinv() As Variant, rcon() As Variant
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Dim g2() As Variant, g3() As Variant, g9() As Variant, g11() As Variant, g13() As Variant, g14() As Variant
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g2 = Array( _
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&H0, &H2, &H4, &H6, &H8, &HA, &HC, &HE, &H10, &H12, &H14, &H16, &H18, &H1A, &H1C, &H1E, _
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&H20, &H22, &H24, &H26, &H28, &H2A, &H2C, &H2E, &H30, &H32, &H34, &H36, &H38, &H3A, &H3C, &H3E, _
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&H40, &H42, &H44, &H46, &H48, &H4A, &H4C, &H4E, &H50, &H52, &H54, &H56, &H58, &H5A, &H5C, &H5E, _
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&H60, &H62, &H64, &H66, &H68, &H6A, &H6C, &H6E, &H70, &H72, &H74, &H76, &H78, &H7A, &H7C, &H7E, _
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&H80, &H82, &H84, &H86, &H88, &H8A, &H8C, &H8E, &H90, &H92, &H94, &H96, &H98, &H9A, &H9C, &H9E, _
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&HA0, &HA2, &HA4, &HA6, &HA8, &HAA, &HAC, &HAE, &HB0, &HB2, &HB4, &HB6, &HB8, &HBA, &HBC, &HBE, _
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&HC0, &HC2, &HC4, &HC6, &HC8, &HCA, &HCC, &HCE, &HD0, &HD2, &HD4, &HD6, &HD8, &HDA, &HDC, &HDE, _
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&HE0, &HE2, &HE4, &HE6, &HE8, &HEA, &HEC, &HEE, &HF0, &HF2, &HF4, &HF6, &HF8, &HFA, &HFC, &HFE, _
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&H1B, &H19, &H1F, &H1D, &H13, &H11, &H17, &H15, &HB, &H9, &HF, &HD, &H3, &H1, &H7, &H5, _
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&H3B, &H39, &H3F, &H3D, &H33, &H31, &H37, &H35, &H2B, &H29, &H2F, &H2D, &H23, &H21, &H27, &H25, _
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&H5B, &H59, &H5F, &H5D, &H53, &H51, &H57, &H55, &H4B, &H49, &H4F, &H4D, &H43, &H41, &H47, &H45, _
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&H7B, &H79, &H7F, &H7D, &H73, &H71, &H77, &H75, &H6B, &H69, &H6F, &H6D, &H63, &H61, &H67, &H65, _
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&H9B, &H99, &H9F, &H9D, &H93, &H91, &H97, &H95, &H8B, &H89, &H8F, &H8D, &H83, &H81, &H87, &H85, _
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&HBB, &HB9, &HBF, &HBD, &HB3, &HB1, &HB7, &HB5, &HAB, &HA9, &HAF, &HAD, &HA3, &HA1, &HA7, &HA5, _
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&HDB, &HD9, &HDF, &HDD, &HD3, &HD1, &HD7, &HD5, &HCB, &HC9, &HCF, &HCD, &HC3, &HC1, &HC7, &HC5, _
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&HFB, &HF9, &HFF, &HFD, &HF3, &HF1, &HF7, &HF5, &HEB, &HE9, &HEF, &HED, &HE3, &HE1, &HE7, &HE5)
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g3 = Array( _
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&H0, &H3, &H6, &H5, &HC, &HF, &HA, &H9, &H18, &H1B, &H1E, &H1D, &H14, &H17, &H12, &H11, _
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&H30, &H33, &H36, &H35, &H3C, &H3F, &H3A, &H39, &H28, &H2B, &H2E, &H2D, &H24, &H27, &H22, &H21, _
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&H60, &H63, &H66, &H65, &H6C, &H6F, &H6A, &H69, &H78, &H7B, &H7E, &H7D, &H74, &H77, &H72, &H71, _
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&H50, &H53, &H56, &H55, &H5C, &H5F, &H5A, &H59, &H48, &H4B, &H4E, &H4D, &H44, &H47, &H42, &H41, _
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&HC0, &HC3, &HC6, &HC5, &HCC, &HCF, &HCA, &HC9, &HD8, &HDB, &HDE, &HDD, &HD4, &HD7, &HD2, &HD1, _
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&HF0, &HF3, &HF6, &HF5, &HFC, &HFF, &HFA, &HF9, &HE8, &HEB, &HEE, &HED, &HE4, &HE7, &HE2, &HE1, _
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&HA0, &HA3, &HA6, &HA5, &HAC, &HAF, &HAA, &HA9, &HB8, &HBB, &HBE, &HBD, &HB4, &HB7, &HB2, &HB1, _
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&H90, &H93, &H96, &H95, &H9C, &H9F, &H9A, &H99, &H88, &H8B, &H8E, &H8D, &H84, &H87, &H82, &H81, _
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&H9B, &H98, &H9D, &H9E, &H97, &H94, &H91, &H92, &H83, &H80, &H85, &H86, &H8F, &H8C, &H89, &H8A, _
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&HAB, &HA8, &HAD, &HAE, &HA7, &HA4, &HA1, &HA2, &HB3, &HB0, &HB5, &HB6, &HBF, &HBC, &HB9, &HBA, _
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&HFB, &HF8, &HFD, &HFE, &HF7, &HF4, &HF1, &HF2, &HE3, &HE0, &HE5, &HE6, &HEF, &HEC, &HE9, &HEA, _
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&HCB, &HC8, &HCD, &HCE, &HC7, &HC4, &HC1, &HC2, &HD3, &HD0, &HD5, &HD6, &HDF, &HDC, &HD9, &HDA, _
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&H5B, &H58, &H5D, &H5E, &H57, &H54, &H51, &H52, &H43, &H40, &H45, &H46, &H4F, &H4C, &H49, &H4A, _
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&H6B, &H68, &H6D, &H6E, &H67, &H64, &H61, &H62, &H73, &H70, &H75, &H76, &H7F, &H7C, &H79, &H7A, _
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&H3B, &H38, &H3D, &H3E, &H37, &H34, &H31, &H32, &H23, &H20, &H25, &H26, &H2F, &H2C, &H29, &H2A, _
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&HB, &H8, &HD, &HE, &H7, &H4, &H1, &H2, &H13, &H10, &H15, &H16, &H1F, &H1C, &H19, &H1A)
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g9 = Array( _
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&H0, &H9, &H12, &H1B, &H24, &H2D, &H36, &H3F, &H48, &H41, &H5A, &H53, &H6C, &H65, &H7E, &H77, _
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&H90, &H99, &H82, &H8B, &HB4, &HBD, &HA6, &HAF, &HD8, &HD1, &HCA, &HC3, &HFC, &HF5, &HEE, &HE7, _
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&H3B, &H32, &H29, &H20, &H1F, &H16, &HD, &H4, &H73, &H7A, &H61, &H68, &H57, &H5E, &H45, &H4C, _
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&HAB, &HA2, &HB9, &HB0, &H8F, &H86, &H9D, &H94, &HE3, &HEA, &HF1, &HF8, &HC7, &HCE, &HD5, &HDC, _
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&H76, &H7F, &H64, &H6D, &H52, &H5B, &H40, &H49, &H3E, &H37, &H2C, &H25, &H1A, &H13, &H8, &H1, _
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&HE6, &HEF, &HF4, &HFD, &HC2, &HCB, &HD0, &HD9, &HAE, &HA7, &HBC, &HB5, &H8A, &H83, &H98, &H91, _
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&H4D, &H44, &H5F, &H56, &H69, &H60, &H7B, &H72, &H5, &HC, &H17, &H1E, &H21, &H28, &H33, &H3A, _
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&HDD, &HD4, &HCF, &HC6, &HF9, &HF0, &HEB, &HE2, &H95, &H9C, &H87, &H8E, &HB1, &HB8, &HA3, &HAA, _
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&HEC, &HE5, &HFE, &HF7, &HC8, &HC1, &HDA, &HD3, &HA4, &HAD, &HB6, &HBF, &H80, &H89, &H92, &H9B, _
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&H7C, &H75, &H6E, &H67, &H58, &H51, &H4A, &H43, &H34, &H3D, &H26, &H2F, &H10, &H19, &H2, &HB, _
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&HD7, &HDE, &HC5, &HCC, &HF3, &HFA, &HE1, &HE8, &H9F, &H96, &H8D, &H84, &HBB, &HB2, &HA9, &HA0, _
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&H47, &H4E, &H55, &H5C, &H63, &H6A, &H71, &H78, &HF, &H6, &H1D, &H14, &H2B, &H22, &H39, &H30, _
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&H9A, &H93, &H88, &H81, &HBE, &HB7, &HAC, &HA5, &HD2, &HDB, &HC0, &HC9, &HF6, &HFF, &HE4, &HED, _
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&HA, &H3, &H18, &H11, &H2E, &H27, &H3C, &H35, &H42, &H4B, &H50, &H59, &H66, &H6F, &H74, &H7D, _
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&HA1, &HA8, &HB3, &HBA, &H85, &H8C, &H97, &H9E, &HE9, &HE0, &HFB, &HF2, &HCD, &HC4, &HDF, &HD6, _
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&H31, &H38, &H23, &H2A, &H15, &H1C, &H7, &HE, &H79, &H70, &H6B, &H62, &H5D, &H54, &H4F, &H46)
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g11 = Array( _
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&H0, &HB, &H16, &H1D, &H2C, &H27, &H3A, &H31, &H58, &H53, &H4E, &H45, &H74, &H7F, &H62, &H69, _
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&HB0, &HBB, &HA6, &HAD, &H9C, &H97, &H8A, &H81, &HE8, &HE3, &HFE, &HF5, &HC4, &HCF, &HD2, &HD9, _
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&H7B, &H70, &H6D, &H66, &H57, &H5C, &H41, &H4A, &H23, &H28, &H35, &H3E, &HF, &H4, &H19, &H12, _
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&HCB, &HC0, &HDD, &HD6, &HE7, &HEC, &HF1, &HFA, &H93, &H98, &H85, &H8E, &HBF, &HB4, &HA9, &HA2, _
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&HF6, &HFD, &HE0, &HEB, &HDA, &HD1, &HCC, &HC7, &HAE, &HA5, &HB8, &HB3, &H82, &H89, &H94, &H9F, _
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&H46, &H4D, &H50, &H5B, &H6A, &H61, &H7C, &H77, &H1E, &H15, &H8, &H3, &H32, &H39, &H24, &H2F, _
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&H8D, &H86, &H9B, &H90, &HA1, &HAA, &HB7, &HBC, &HD5, &HDE, &HC3, &HC8, &HF9, &HF2, &HEF, &HE4, _
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&H3D, &H36, &H2B, &H20, &H11, &H1A, &H7, &HC, &H65, &H6E, &H73, &H78, &H49, &H42, &H5F, &H54, _
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&HF7, &HFC, &HE1, &HEA, &HDB, &HD0, &HCD, &HC6, &HAF, &HA4, &HB9, &HB2, &H83, &H88, &H95, &H9E, _
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&H47, &H4C, &H51, &H5A, &H6B, &H60, &H7D, &H76, &H1F, &H14, &H9, &H2, &H33, &H38, &H25, &H2E, _
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&H8C, &H87, &H9A, &H91, &HA0, &HAB, &HB6, &HBD, &HD4, &HDF, &HC2, &HC9, &HF8, &HF3, &HEE, &HE5, _
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&H3C, &H37, &H2A, &H21, &H10, &H1B, &H6, &HD, &H64, &H6F, &H72, &H79, &H48, &H43, &H5E, &H55, _
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&H1, &HA, &H17, &H1C, &H2D, &H26, &H3B, &H30, &H59, &H52, &H4F, &H44, &H75, &H7E, &H63, &H68, _
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&HB1, &HBA, &HA7, &HAC, &H9D, &H96, &H8B, &H80, &HE9, &HE2, &HFF, &HF4, &HC5, &HCE, &HD3, &HD8, _
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&H7A, &H71, &H6C, &H67, &H56, &H5D, &H40, &H4B, &H22, &H29, &H34, &H3F, &HE, &H5, &H18, &H13, _
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&HCA, &HC1, &HDC, &HD7, &HE6, &HED, &HF0, &HFB, &H92, &H99, &H84, &H8F, &HBE, &HB5, &HA8, &HA3)
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g13 = Array( _
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&H0, &HD, &H1A, &H17, &H34, &H39, &H2E, &H23, &H68, &H65, &H72, &H7F, &H5C, &H51, &H46, &H4B, _
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&HD0, &HDD, &HCA, &HC7, &HE4, &HE9, &HFE, &HF3, &HB8, &HB5, &HA2, &HAF, &H8C, &H81, &H96, &H9B, _
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&HBB, &HB6, &HA1, &HAC, &H8F, &H82, &H95, &H98, &HD3, &HDE, &HC9, &HC4, &HE7, &HEA, &HFD, &HF0, _
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&H6B, &H66, &H71, &H7C, &H5F, &H52, &H45, &H48, &H3, &HE, &H19, &H14, &H37, &H3A, &H2D, &H20, _
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&H6D, &H60, &H77, &H7A, &H59, &H54, &H43, &H4E, &H5, &H8, &H1F, &H12, &H31, &H3C, &H2B, &H26, _
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&HBD, &HB0, &HA7, &HAA, &H89, &H84, &H93, &H9E, &HD5, &HD8, &HCF, &HC2, &HE1, &HEC, &HFB, &HF6, _
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&HD6, &HDB, &HCC, &HC1, &HE2, &HEF, &HF8, &HF5, &HBE, &HB3, &HA4, &HA9, &H8A, &H87, &H90, &H9D, _
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&H6, &HB, &H1C, &H11, &H32, &H3F, &H28, &H25, &H6E, &H63, &H74, &H79, &H5A, &H57, &H40, &H4D, _
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&HDA, &HD7, &HC0, &HCD, &HEE, &HE3, &HF4, &HF9, &HB2, &HBF, &HA8, &HA5, &H86, &H8B, &H9C, &H91, _
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&HA, &H7, &H10, &H1D, &H3E, &H33, &H24, &H29, &H62, &H6F, &H78, &H75, &H56, &H5B, &H4C, &H41, _
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&H61, &H6C, &H7B, &H76, &H55, &H58, &H4F, &H42, &H9, &H4, &H13, &H1E, &H3D, &H30, &H27, &H2A, _
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&HB1, &HBC, &HAB, &HA6, &H85, &H88, &H9F, &H92, &HD9, &HD4, &HC3, &HCE, &HED, &HE0, &HF7, &HFA, _
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&HB7, &HBA, &HAD, &HA0, &H83, &H8E, &H99, &H94, &HDF, &HD2, &HC5, &HC8, &HEB, &HE6, &HF1, &HFC, _
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&H67, &H6A, &H7D, &H70, &H53, &H5E, &H49, &H44, &HF, &H2, &H15, &H18, &H3B, &H36, &H21, &H2C, _
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&HC, &H1, &H16, &H1B, &H38, &H35, &H22, &H2F, &H64, &H69, &H7E, &H73, &H50, &H5D, &H4A, &H47, _
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&HDC, &HD1, &HC6, &HCB, &HE8, &HE5, &HF2, &HFF, &HB4, &HB9, &HAE, &HA3, &H80, &H8D, &H9A, &H97)
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g14 = Array( _
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&H0, &HE, &H1C, &H12, &H38, &H36, &H24, &H2A, &H70, &H7E, &H6C, &H62, &H48, &H46, &H54, &H5A, _
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&HE0, &HEE, &HFC, &HF2, &HD8, &HD6, &HC4, &HCA, &H90, &H9E, &H8C, &H82, &HA8, &HA6, &HB4, &HBA, _
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&HDB, &HD5, &HC7, &HC9, &HE3, &HED, &HFF, &HF1, &HAB, &HA5, &HB7, &HB9, &H93, &H9D, &H8F, &H81, _
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&H3B, &H35, &H27, &H29, &H3, &HD, &H1F, &H11, &H4B, &H45, &H57, &H59, &H73, &H7D, &H6F, &H61, _
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&HAD, &HA3, &HB1, &HBF, &H95, &H9B, &H89, &H87, &HDD, &HD3, &HC1, &HCF, &HE5, &HEB, &HF9, &HF7, _
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&H4D, &H43, &H51, &H5F, &H75, &H7B, &H69, &H67, &H3D, &H33, &H21, &H2F, &H5, &HB, &H19, &H17, _
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&H76, &H78, &H6A, &H64, &H4E, &H40, &H52, &H5C, &H6, &H8, &H1A, &H14, &H3E, &H30, &H22, &H2C, _
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&H96, &H98, &H8A, &H84, &HAE, &HA0, &HB2, &HBC, &HE6, &HE8, &HFA, &HF4, &HDE, &HD0, &HC2, &HCC, _
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&H41, &H4F, &H5D, &H53, &H79, &H77, &H65, &H6B, &H31, &H3F, &H2D, &H23, &H9, &H7, &H15, &H1B, _
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&HA1, &HAF, &HBD, &HB3, &H99, &H97, &H85, &H8B, &HD1, &HDF, &HCD, &HC3, &HE9, &HE7, &HF5, &HFB, _
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&H9A, &H94, &H86, &H88, &HA2, &HAC, &HBE, &HB0, &HEA, &HE4, &HF6, &HF8, &HD2, &HDC, &HCE, &HC0, _
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&H7A, &H74, &H66, &H68, &H42, &H4C, &H5E, &H50, &HA, &H4, &H16, &H18, &H32, &H3C, &H2E, &H20, _
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&HEC, &HE2, &HF0, &HFE, &HD4, &HDA, &HC8, &HC6, &H9C, &H92, &H80, &H8E, &HA4, &HAA, &HB8, &HB6, _
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&HC, &H2, &H10, &H1E, &H34, &H3A, &H28, &H26, &H7C, &H72, &H60, &H6E, &H44, &H4A, &H58, &H56, _
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&H37, &H39, &H2B, &H25, &HF, &H1, &H13, &H1D, &H47, &H49, &H5B, &H55, &H7F, &H71, &H63, &H6D, _
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&HD7, &HD9, &HCB, &HC5, &HEF, &HE1, &HF3, &HFD, &HA7, &HA9, &HBB, &HB5, &H9F, &H91, &H83, &H8D)
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sbox = Array( _
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&H63, &H7C, &H77, &H7B, &HF2, &H6B, &H6F, &HC5, &H30, &H1, &H67, &H2B, &HFE, &HD7, &HAB, &H76, _
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&HCA, &H82, &HC9, &H7D, &HFA, &H59, &H47, &HF0, &HAD, &HD4, &HA2, &HAF, &H9C, &HA4, &H72, &HC0, _
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&HB7, &HFD, &H93, &H26, &H36, &H3F, &HF7, &HCC, &H34, &HA5, &HE5, &HF1, &H71, &HD8, &H31, &H15, _
-
&H4, &HC7, &H23, &HC3, &H18, &H96, &H5, &H9A, &H7, &H12, &H80, &HE2, &HEB, &H27, &HB2, &H75, _
-
&H9, &H83, &H2C, &H1A, &H1B, &H6E, &H5A, &HA0, &H52, &H3B, &HD6, &HB3, &H29, &HE3, &H2F, &H84, _
-
&H53, &HD1, &H0, &HED, &H20, &HFC, &HB1, &H5B, &H6A, &HCB, &HBE, &H39, &H4A, &H4C, &H58, &HCF, _
-
&HD0, &HEF, &HAA, &HFB, &H43, &H4D, &H33, &H85, &H45, &HF9, &H2, &H7F, &H50, &H3C, &H9F, &HA8, _
-
&H51, &HA3, &H40, &H8F, &H92, &H9D, &H38, &HF5, &HBC, &HB6, &HDA, &H21, &H10, &HFF, &HF3, &HD2, _
-
&HCD, &HC, &H13, &HEC, &H5F, &H97, &H44, &H17, &HC4, &HA7, &H7E, &H3D, &H64, &H5D, &H19, &H73, _
-
&H60, &H81, &H4F, &HDC, &H22, &H2A, &H90, &H88, &H46, &HEE, &HB8, &H14, &HDE, &H5E, &HB, &HDB, _
-
&HE0, &H32, &H3A, &HA, &H49, &H6, &H24, &H5C, &HC2, &HD3, &HAC, &H62, &H91, &H95, &HE4, &H79, _
-
&HE7, &HC8, &H37, &H6D, &H8D, &HD5, &H4E, &HA9, &H6C, &H56, &HF4, &HEA, &H65, &H7A, &HAE, &H8, _
-
&HBA, &H78, &H25, &H2E, &H1C, &HA6, &HB4, &HC6, &HE8, &HDD, &H74, &H1F, &H4B, &HBD, &H8B, &H8A, _
-
&H70, &H3E, &HB5, &H66, &H48, &H3, &HF6, &HE, &H61, &H35, &H57, &HB9, &H86, &HC1, &H1D, &H9E, _
-
&HE1, &HF8, &H98, &H11, &H69, &HD9, &H8E, &H94, &H9B, &H1E, &H87, &HE9, &HCE, &H55, &H28, &HDF, _
-
&H8C, &HA1, &H89, &HD, &HBF, &HE6, &H42, &H68, &H41, &H99, &H2D, &HF, &HB0, &H54, &HBB, &H16)
-
-
sboxinv = Array( _
-
&H52, &H9, &H6A, &HD5, &H30, &H36, &HA5, &H38, &HBF, &H40, &HA3, &H9E, &H81, &HF3, &HD7, &HFB, _
-
&H7C, &HE3, &H39, &H82, &H9B, &H2F, &HFF, &H87, &H34, &H8E, &H43, &H44, &HC4, &HDE, &HE9, &HCB, _
-
&H54, &H7B, &H94, &H32, &HA6, &HC2, &H23, &H3D, &HEE, &H4C, &H95, &HB, &H42, &HFA, &HC3, &H4E, _
-
&H8, &H2E, &HA1, &H66, &H28, &HD9, &H24, &HB2, &H76, &H5B, &HA2, &H49, &H6D, &H8B, &HD1, &H25, _
-
&H72, &HF8, &HF6, &H64, &H86, &H68, &H98, &H16, &HD4, &HA4, &H5C, &HCC, &H5D, &H65, &HB6, &H92, _
-
&H6C, &H70, &H48, &H50, &HFD, &HED, &HB9, &HDA, &H5E, &H15, &H46, &H57, &HA7, &H8D, &H9D, &H84, _
-
&H90, &HD8, &HAB, &H0, &H8C, &HBC, &HD3, &HA, &HF7, &HE4, &H58, &H5, &HB8, &HB3, &H45, &H6, _
-
&HD0, &H2C, &H1E, &H8F, &HCA, &H3F, &HF, &H2, &HC1, &HAF, &HBD, &H3, &H1, &H13, &H8A, &H6B, _
-
&H3A, &H91, &H11, &H41, &H4F, &H67, &HDC, &HEA, &H97, &HF2, &HCF, &HCE, &HF0, &HB4, &HE6, &H73, _
-
&H96, &HAC, &H74, &H22, &HE7, &HAD, &H35, &H85, &HE2, &HF9, &H37, &HE8, &H1C, &H75, &HDF, &H6E, _
-
&H47, &HF1, &H1A, &H71, &H1D, &H29, &HC5, &H89, &H6F, &HB7, &H62, &HE, &HAA, &H18, &HBE, &H1B, _
-
&HFC, &H56, &H3E, &H4B, &HC6, &HD2, &H79, &H20, &H9A, &HDB, &HC0, &HFE, &H78, &HCD, &H5A, &HF4, _
-
&H1F, &HDD, &HA8, &H33, &H88, &H7, &HC7, &H31, &HB1, &H12, &H10, &H59, &H27, &H80, &HEC, &H5F, _
-
&H60, &H51, &H7F, &HA9, &H19, &HB5, &H4A, &HD, &H2D, &HE5, &H7A, &H9F, &H93, &HC9, &H9C, &HEF, _
-
&HA0, &HE0, &H3B, &H4D, &HAE, &H2A, &HF5, &HB0, &HC8, &HEB, &HBB, &H3C, &H83, &H53, &H99, &H61, _
-
&H17, &H2B, &H4, &H7E, &HBA, &H77, &HD6, &H26, &HE1, &H69, &H14, &H63, &H55, &H21, &HC, &H7D)
-
-
rcon = Array( _
-
&H8D, &H1, &H2, &H4, &H8, &H10, &H20, &H40, &H80, &H1B, &H36, &H6C, &HD8, &HAB, &H4D, &H9A, _
-
&H2F, &H5E, &HBC, &H63, &HC6, &H97, &H35, &H6A, &HD4, &HB3, &H7D, &HFA, &HEF, &HC5, &H91, &H39, _
-
&H72, &HE4, &HD3, &HBD, &H61, &HC2, &H9F, &H25, &H4A, &H94, &H33, &H66, &HCC, &H83, &H1D, &H3A, _
-
&H74, &HE8, &HCB, &H8D, &H1, &H2, &H4, &H8, &H10, &H20, &H40, &H80, &H1B, &H36, &H6C, &HD8, _
-
&HAB, &H4D, &H9A, &H2F, &H5E, &HBC, &H63, &HC6, &H97, &H35, &H6A, &HD4, &HB3, &H7D, &HFA, &HEF, _
-
&HC5, &H91, &H39, &H72, &HE4, &HD3, &HBD, &H61, &HC2, &H9F, &H25, &H4A, &H94, &H33, &H66, &HCC, _
-
&H83, &H1D, &H3A, &H74, &HE8, &HCB, &H8D, &H1, &H2, &H4, &H8, &H10, &H20, &H40, &H80, &H1B, _
-
&H36, &H6C, &HD8, &HAB, &H4D, &H9A, &H2F, &H5E, &HBC, &H63, &HC6, &H97, &H35, &H6A, &HD4, &HB3, _
-
&H7D, &HFA, &HEF, &HC5, &H91, &H39, &H72, &HE4, &HD3, &HBD, &H61, &HC2, &H9F, &H25, &H4A, &H94, _
-
&H33, &H66, &HCC, &H83, &H1D, &H3A, &H74, &HE8, &HCB, &H8D, &H1, &H2, &H4, &H8, &H10, &H20, _
-
&H40, &H80, &H1B, &H36, &H6C, &HD8, &HAB, &H4D, &H9A, &H2F, &H5E, &HBC, &H63, &HC6, &H97, &H35, _
-
&H6A, &HD4, &HB3, &H7D, &HFA, &HEF, &HC5, &H91, &H39, &H72, &HE4, &HD3, &HBD, &H61, &HC2, &H9F, _
-
&H25, &H4A, &H94, &H33, &H66, &HCC, &H83, &H1D, &H3A, &H74, &HE8, &HCB, &H8D, &H1, &H2, &H4, _
-
&H8, &H10, &H20, &H40, &H80, &H1B, &H36, &H6C, &HD8, &HAB, &H4D, &H9A, &H2F, &H5E, &HBC, &H63, _
-
&HC6, &H97, &H35, &H6A, &HD4, &HB3, &H7D, &HFA, &HEF, &HC5, &H91, &H39, &H72, &HE4, &HD3, &HBD, _
-
&H61, &HC2, &H9F, &H25, &H4A, &H94, &H33, &H66, &HCC, &H83, &H1D, &H3A, &H74, &HE8, &HCB)
-
-
Dim expandedKey, block(16) As Double, aesKey(32) As Double, i As Integer, j As Integer
-
Dim isDone As Boolean, isEncode As Boolean
-
Dim sCipher, sTemp, nonce(16), priorCipher(16)
-
Dim x As Integer, r As Integer, y As Integer, temp(4), intTemp
-
-
-
-
-
If Left(sPlain, 3) <> "xxx" Then
-
-
isEncode = True
-
Else
-
sPlain = Right(sPlain, Len(sPlain) - 3)
-
isEncode = False
-
End If
-
-
-
If sNonce <> "" Then
-
For i = 0 To 15
-
nonce(i) = Asc(Mid(sNonce, (i Mod Len(sNonce)) + 1, 1))
-
Next
-
Else
-
For i = 0 To 15
-
nonce(i) = 0
-
Next
-
End If
-
If sPass = "" Then sPass = "password"
-
-
For i = 0 To (Len(sPass) - 1)
-
aesKey(i) = Asc(Mid(sPass, i + 1, 1))
-
Next
-
-
For i = Len(sPass) To 31
-
aesKey(i) = 0
-
Next
-
-
expandedKey = expandKey(aesKey, sbox, rcon)
-
j = 0
-
isDone = False
-
-
Do Until isDone
-
sTemp = Mid(sPlain, j * 16 + 1, 16)
-
-
If Len(sTemp) < 16 Then
-
For i = Len(sTemp) To 15
-
sTemp = sTemp & Chr(0)
-
Next
-
End If
-
-
For i = 0 To 15
-
block(i) = Asc(Mid(sTemp, (i Mod 4) * 4 + (i \ 4) + 1, 1))
-
Next
-
-
If (j + 1) * 16 >= Len(sPlain) Then
-
isDone = True
-
End If
-
-
j = j + 1
-
-
If isEncode Then
-
r = 0
-
For i = 0 To 15
-
block(i) = block(i) Xor nonce(i) Xor expandedKey((i Mod 4) * 4 + (i \ 4))
-
Next
-
-
For x = 1 To 13
-
block(0) = sbox(block(0))
-
block(1) = sbox(block(1))
-
block(2) = sbox(block(2))
-
block(3) = sbox(block(3))
-
-
intTemp = sbox(block(4))
-
block(4) = sbox(block(5))
-
block(5) = sbox(block(6))
-
block(6) = sbox(block(7))
-
block(7) = intTemp
-
-
intTemp = sbox(block(8))
-
block(8) = sbox(block(10))
-
block(10) = intTemp
-
intTemp = sbox(block(9))
-
block(9) = sbox(block(11))
-
block(11) = intTemp
-
-
intTemp = sbox(block(12))
-
block(12) = sbox(block(15))
-
block(15) = sbox(block(14))
-
block(14) = sbox(block(13))
-
block(13) = intTemp
-
-
r = x * 16
-
For i = 0 To 3
-
temp(0) = block(i)
-
temp(1) = block(i + 4)
-
temp(2) = block(i + 8)
-
temp(3) = block(i + 12)
-
-
block(i) = g2(temp(0)) Xor temp(3) Xor temp(2) Xor g3(temp(1)) Xor expandedKey(r + i * 4)
-
block(i + 4) = g2(temp(1)) Xor temp(0) Xor temp(3) Xor g3(temp(2)) Xor expandedKey(r + i * 4 + 1)
-
block(i + 8) = g2(temp(2)) Xor temp(1) Xor temp(0) Xor g3(temp(3)) Xor expandedKey(r + i * 4 + 2)
-
block(i + 12) = g2(temp(3)) Xor temp(2) Xor temp(1) Xor g3(temp(0)) Xor expandedKey(r + i * 4 + 3)
-
Next
-
Next
-
-
block(0) = sbox(block(0)) Xor expandedKey(224)
-
block(1) = sbox(block(1)) Xor expandedKey(228)
-
block(2) = sbox(block(2)) Xor expandedKey(232)
-
block(3) = sbox(block(3)) Xor expandedKey(236)
-
-
intTemp = sbox(block(4)) Xor expandedKey(237)
-
block(4) = sbox(block(5)) Xor expandedKey(225)
-
block(5) = sbox(block(6)) Xor expandedKey(229)
-
block(6) = sbox(block(7)) Xor expandedKey(233)
-
block(7) = intTemp
-
-
intTemp = sbox(block(8)) Xor expandedKey(234)
-
block(8) = sbox(block(10)) Xor expandedKey(226)
-
block(10) = intTemp
-
intTemp = sbox(block(9)) Xor expandedKey(238)
-
block(9) = sbox(block(11)) Xor expandedKey(230)
-
block(11) = intTemp
-
-
intTemp = sbox(block(12)) Xor expandedKey(231)
-
block(12) = sbox(block(15)) Xor expandedKey(227)
-
block(15) = sbox(block(14)) Xor expandedKey(239)
-
block(14) = sbox(block(13)) Xor expandedKey(235)
-
block(13) = intTemp
-
-
For i = 0 To 15
-
nonce(i) = block(i)
-
Next
-
Else
-
For i = 0 To 15
-
priorCipher(i) = block(i)
-
Next
-
-
block(0) = sboxinv(block(0) Xor expandedKey(224))
-
block(1) = sboxinv(block(1) Xor expandedKey(228))
-
block(2) = sboxinv(block(2) Xor expandedKey(232))
-
block(3) = sboxinv(block(3) Xor expandedKey(236))
-
-
intTemp = sboxinv(block(4) Xor expandedKey(225))
-
block(4) = sboxinv(block(7) Xor expandedKey(237))
-
block(7) = sboxinv(block(6) Xor expandedKey(233))
-
block(6) = sboxinv(block(5) Xor expandedKey(229))
-
block(5) = intTemp
-
-
intTemp = sboxinv(block(8) Xor expandedKey(226))
-
block(8) = sboxinv(block(10) Xor expandedKey(234))
-
block(10) = intTemp
-
intTemp = sboxinv(block(9) Xor expandedKey(230))
-
block(9) = sboxinv(block(11) Xor expandedKey(238))
-
block(11) = intTemp
-
-
intTemp = sboxinv(block(12) Xor expandedKey(227))
-
block(12) = sboxinv(block(13) Xor expandedKey(231))
-
block(13) = sboxinv(block(14) Xor expandedKey(235))
-
block(14) = sboxinv(block(15) Xor expandedKey(239))
-
block(15) = intTemp
-
-
For x = 13 To 1 Step -1
-
r = x * 16
-
-
For i = 0 To 3
-
temp(0) = block(i) Xor expandedKey(r + i * 4)
-
temp(1) = block(i + 4) Xor expandedKey(r + i * 4 + 1)
-
temp(2) = block(i + 8) Xor expandedKey(r + i * 4 + 2)
-
temp(3) = block(i + 12) Xor expandedKey(r + i * 4 + 3)
-
-
block(i) = g14(temp(0)) Xor g9(temp(3)) Xor g13(temp(2)) Xor g11(temp(1))
-
block(i + 4) = g14(temp(1)) Xor g9(temp(0)) Xor g13(temp(3)) Xor g11(temp(2))
-
block(i + 8) = g14(temp(2)) Xor g9(temp(1)) Xor g13(temp(0)) Xor g11(temp(3))
-
block(i + 12) = g14(temp(3)) Xor g9(temp(2)) Xor g13(temp(1)) Xor g11(temp(0))
-
Next
-
-
block(0) = sboxinv(block(0))
-
block(1) = sboxinv(block(1))
-
block(2) = sboxinv(block(2))
-
block(3) = sboxinv(block(3))
-
-
intTemp = sboxinv(block(4))
-
block(4) = sboxinv(block(7))
-
block(7) = sboxinv(block(6))
-
block(6) = sboxinv(block(5))
-
block(5) = intTemp
-
-
intTemp = sboxinv(block(8))
-
block(8) = sboxinv(block(10))
-
block(10) = intTemp
-
intTemp = sboxinv(block(9))
-
block(9) = sboxinv(block(11))
-
block(11) = intTemp
-
-
intTemp = sboxinv(block(12))
-
block(12) = sboxinv(block(13))
-
block(13) = sboxinv(block(14))
-
block(14) = sboxinv(block(15))
-
block(15) = intTemp
-
Next
-
-
r = 0
-
For i = 0 To 15
-
block(i) = block(i) Xor expandedKey((i Mod 4) * 4 + (i \ 4)) Xor nonce(i)
-
nonce(i) = priorCipher(i)
-
Next
-
End If
-
-
For i = 0 To 15
-
sCipher = sCipher & Chr(block((i Mod 4) * 4 + (i \ 4)))
-
Next
-
Loop
-
-
If isEncode Then
-
stringAES = "xxx" & sCipher
-
Else
-
sCipher = Replace(sCipher, Chr(0), "")
-
sCipher = Replace(sCipher, Chr(10), "")
-
sCipher = Replace(sCipher, Chr(13), "")
-
sCipher = Replace(sCipher, "'", "''")
-
stringAES = sCipher
-
-
End If
-
End Function
3 2407
I was able to solve that problem. Excel was not reading correctly the Null character Chr(0) that was generated by the function. So I replaced it at the end of the encryption with a unique group of characters. When I went to decrypt it, I replaced that group of characters with the original Chr(0) before proceeding. Now everything is working fine.
Hi, thanks for sharing the code.
I am trying to adapt it to elaborate Hex bytes.
Aim is to have cells of Hex bytes passed to the function and crypt/decrypt.
I have changed/adapted the expanded_key and the main function to load bytes, but not successful.
Would you mind supporting?
thanks -
'Option Compare Database
-
Option Explicit
-
'https://bytes.com/topic/access/answers/966638-aes-question-vba-excel
-
-
Function keyScheduleCore(ByRef row(), ByVal a, ByRef box() As Variant, ByRef rcon() As Variant)
-
Dim result(4), i
-
-
For i = 0 To 3
-
result(i) = box(row((i + 5) Mod 4))
-
Next
-
-
result(0) = result(0) Xor rcon(a)
-
keyScheduleCore = result
-
End Function
-
-
Function expandKey(ByRef key() As Double, ByRef box() As Variant, ByRef rcon() As Variant)
-
'MOD added () to array variables
-
Dim rConIter, temp(), i, result(240)
-
-
ReDim temp(4)
-
rConIter = 1
-
-
For i = 0 To 15
-
result(i) = key(i)
-
Next
-
-
For i = 16 + 1 To 239 Step 4
-
temp(0) = result(i - 4)
-
temp(1) = result(i - 3)
-
temp(2) = result(i - 2)
-
temp(3) = result(i - 1)
-
-
If i Mod 16 = 0 Then
-
temp = keyScheduleCore(temp, rConIter, box, rcon)
-
rConIter = rConIter + 1
-
End If
-
-
If i Mod 16 = 8 Then
-
temp(0) = box(temp(0))
-
temp(1) = box(temp(1))
-
temp(2) = box(temp(2))
-
temp(3) = box(temp(3))
-
End If
-
-
result(i) = result(i - 16) Xor temp(0)
-
result(i + 1) = result(i - 15) Xor temp(1)
-
result(i + 2) = result(i - 14) Xor temp(2)
-
result(i + 3) = result(i - 13) Xor temp(3)
-
Next
-
-
expandKey = result
-
End Function
-
-
Function stringAES(sPlain As String, sPass As String, toCrypt As Boolean, Optional snOnce As String) As String
-
''
-
''Based on code by Rabbit
-
'http://bytes.com/topic/access/insights/906850-aes-encryption-algorithm-vba-vbscript
-
'See the ECM version for the changes
-
Dim sbox() As Variant, sboxinv() As Variant, rcon() As Variant
-
Dim g2() As Variant, g3() As Variant, g9() As Variant, g11() As Variant, g13() As Variant, g14() As Variant
-
-
g2 = Array( _
-
&H0, &H2, &H4, &H6, &H8, &HA, &HC, &HE, &H10, &H12, &H14, &H16, &H18, &H1A, &H1C, &H1E, _
-
&H20, &H22, &H24, &H26, &H28, &H2A, &H2C, &H2E, &H30, &H32, &H34, &H36, &H38, &H3A, &H3C, &H3E, _
-
&H40, &H42, &H44, &H46, &H48, &H4A, &H4C, &H4E, &H50, &H52, &H54, &H56, &H58, &H5A, &H5C, &H5E, _
-
&H60, &H62, &H64, &H66, &H68, &H6A, &H6C, &H6E, &H70, &H72, &H74, &H76, &H78, &H7A, &H7C, &H7E, _
-
&H80, &H82, &H84, &H86, &H88, &H8A, &H8C, &H8E, &H90, &H92, &H94, &H96, &H98, &H9A, &H9C, &H9E, _
-
&HA0, &HA2, &HA4, &HA6, &HA8, &HAA, &HAC, &HAE, &HB0, &HB2, &HB4, &HB6, &HB8, &HBA, &HBC, &HBE, _
-
&HC0, &HC2, &HC4, &HC6, &HC8, &HCA, &HCC, &HCE, &HD0, &HD2, &HD4, &HD6, &HD8, &HDA, &HDC, &HDE, _
-
&HE0, &HE2, &HE4, &HE6, &HE8, &HEA, &HEC, &HEE, &HF0, &HF2, &HF4, &HF6, &HF8, &HFA, &HFC, &HFE, _
-
&H1B, &H19, &H1F, &H1D, &H13, &H11, &H17, &H15, &HB, &H9, &HF, &HD, &H3, &H1, &H7, &H5, _
-
&H3B, &H39, &H3F, &H3D, &H33, &H31, &H37, &H35, &H2B, &H29, &H2F, &H2D, &H23, &H21, &H27, &H25, _
-
&H5B, &H59, &H5F, &H5D, &H53, &H51, &H57, &H55, &H4B, &H49, &H4F, &H4D, &H43, &H41, &H47, &H45, _
-
&H7B, &H79, &H7F, &H7D, &H73, &H71, &H77, &H75, &H6B, &H69, &H6F, &H6D, &H63, &H61, &H67, &H65, _
-
&H9B, &H99, &H9F, &H9D, &H93, &H91, &H97, &H95, &H8B, &H89, &H8F, &H8D, &H83, &H81, &H87, &H85, _
-
&HBB, &HB9, &HBF, &HBD, &HB3, &HB1, &HB7, &HB5, &HAB, &HA9, &HAF, &HAD, &HA3, &HA1, &HA7, &HA5, _
-
&HDB, &HD9, &HDF, &HDD, &HD3, &HD1, &HD7, &HD5, &HCB, &HC9, &HCF, &HCD, &HC3, &HC1, &HC7, &HC5, _
-
&HFB, &HF9, &HFF, &HFD, &HF3, &HF1, &HF7, &HF5, &HEB, &HE9, &HEF, &HED, &HE3, &HE1, &HE7, &HE5)
-
-
g3 = Array( _
-
&H0, &H3, &H6, &H5, &HC, &HF, &HA, &H9, &H18, &H1B, &H1E, &H1D, &H14, &H17, &H12, &H11, _
-
&H30, &H33, &H36, &H35, &H3C, &H3F, &H3A, &H39, &H28, &H2B, &H2E, &H2D, &H24, &H27, &H22, &H21, _
-
&H60, &H63, &H66, &H65, &H6C, &H6F, &H6A, &H69, &H78, &H7B, &H7E, &H7D, &H74, &H77, &H72, &H71, _
-
&H50, &H53, &H56, &H55, &H5C, &H5F, &H5A, &H59, &H48, &H4B, &H4E, &H4D, &H44, &H47, &H42, &H41, _
-
&HC0, &HC3, &HC6, &HC5, &HCC, &HCF, &HCA, &HC9, &HD8, &HDB, &HDE, &HDD, &HD4, &HD7, &HD2, &HD1, _
-
&HF0, &HF3, &HF6, &HF5, &HFC, &HFF, &HFA, &HF9, &HE8, &HEB, &HEE, &HED, &HE4, &HE7, &HE2, &HE1, _
-
&HA0, &HA3, &HA6, &HA5, &HAC, &HAF, &HAA, &HA9, &HB8, &HBB, &HBE, &HBD, &HB4, &HB7, &HB2, &HB1, _
-
&H90, &H93, &H96, &H95, &H9C, &H9F, &H9A, &H99, &H88, &H8B, &H8E, &H8D, &H84, &H87, &H82, &H81, _
-
&H9B, &H98, &H9D, &H9E, &H97, &H94, &H91, &H92, &H83, &H80, &H85, &H86, &H8F, &H8C, &H89, &H8A, _
-
&HAB, &HA8, &HAD, &HAE, &HA7, &HA4, &HA1, &HA2, &HB3, &HB0, &HB5, &HB6, &HBF, &HBC, &HB9, &HBA, _
-
&HFB, &HF8, &HFD, &HFE, &HF7, &HF4, &HF1, &HF2, &HE3, &HE0, &HE5, &HE6, &HEF, &HEC, &HE9, &HEA, _
-
&HCB, &HC8, &HCD, &HCE, &HC7, &HC4, &HC1, &HC2, &HD3, &HD0, &HD5, &HD6, &HDF, &HDC, &HD9, &HDA, _
-
&H5B, &H58, &H5D, &H5E, &H57, &H54, &H51, &H52, &H43, &H40, &H45, &H46, &H4F, &H4C, &H49, &H4A, _
-
&H6B, &H68, &H6D, &H6E, &H67, &H64, &H61, &H62, &H73, &H70, &H75, &H76, &H7F, &H7C, &H79, &H7A, _
-
&H3B, &H38, &H3D, &H3E, &H37, &H34, &H31, &H32, &H23, &H20, &H25, &H26, &H2F, &H2C, &H29, &H2A, _
-
&HB, &H8, &HD, &HE, &H7, &H4, &H1, &H2, &H13, &H10, &H15, &H16, &H1F, &H1C, &H19, &H1A)
-
-
g9 = Array( _
-
&H0, &H9, &H12, &H1B, &H24, &H2D, &H36, &H3F, &H48, &H41, &H5A, &H53, &H6C, &H65, &H7E, &H77, _
-
&H90, &H99, &H82, &H8B, &HB4, &HBD, &HA6, &HAF, &HD8, &HD1, &HCA, &HC3, &HFC, &HF5, &HEE, &HE7, _
-
&H3B, &H32, &H29, &H20, &H1F, &H16, &HD, &H4, &H73, &H7A, &H61, &H68, &H57, &H5E, &H45, &H4C, _
-
&HAB, &HA2, &HB9, &HB0, &H8F, &H86, &H9D, &H94, &HE3, &HEA, &HF1, &HF8, &HC7, &HCE, &HD5, &HDC, _
-
&H76, &H7F, &H64, &H6D, &H52, &H5B, &H40, &H49, &H3E, &H37, &H2C, &H25, &H1A, &H13, &H8, &H1, _
-
&HE6, &HEF, &HF4, &HFD, &HC2, &HCB, &HD0, &HD9, &HAE, &HA7, &HBC, &HB5, &H8A, &H83, &H98, &H91, _
-
&H4D, &H44, &H5F, &H56, &H69, &H60, &H7B, &H72, &H5, &HC, &H17, &H1E, &H21, &H28, &H33, &H3A, _
-
&HDD, &HD4, &HCF, &HC6, &HF9, &HF0, &HEB, &HE2, &H95, &H9C, &H87, &H8E, &HB1, &HB8, &HA3, &HAA, _
-
&HEC, &HE5, &HFE, &HF7, &HC8, &HC1, &HDA, &HD3, &HA4, &HAD, &HB6, &HBF, &H80, &H89, &H92, &H9B, _
-
&H7C, &H75, &H6E, &H67, &H58, &H51, &H4A, &H43, &H34, &H3D, &H26, &H2F, &H10, &H19, &H2, &HB, _
-
&HD7, &HDE, &HC5, &HCC, &HF3, &HFA, &HE1, &HE8, &H9F, &H96, &H8D, &H84, &HBB, &HB2, &HA9, &HA0, _
-
&H47, &H4E, &H55, &H5C, &H63, &H6A, &H71, &H78, &HF, &H6, &H1D, &H14, &H2B, &H22, &H39, &H30, _
-
&H9A, &H93, &H88, &H81, &HBE, &HB7, &HAC, &HA5, &HD2, &HDB, &HC0, &HC9, &HF6, &HFF, &HE4, &HED, _
-
&HA, &H3, &H18, &H11, &H2E, &H27, &H3C, &H35, &H42, &H4B, &H50, &H59, &H66, &H6F, &H74, &H7D, _
-
&HA1, &HA8, &HB3, &HBA, &H85, &H8C, &H97, &H9E, &HE9, &HE0, &HFB, &HF2, &HCD, &HC4, &HDF, &HD6, _
-
&H31, &H38, &H23, &H2A, &H15, &H1C, &H7, &HE, &H79, &H70, &H6B, &H62, &H5D, &H54, &H4F, &H46)
-
-
g11 = Array( _
-
&H0, &HB, &H16, &H1D, &H2C, &H27, &H3A, &H31, &H58, &H53, &H4E, &H45, &H74, &H7F, &H62, &H69, _
-
&HB0, &HBB, &HA6, &HAD, &H9C, &H97, &H8A, &H81, &HE8, &HE3, &HFE, &HF5, &HC4, &HCF, &HD2, &HD9, _
-
&H7B, &H70, &H6D, &H66, &H57, &H5C, &H41, &H4A, &H23, &H28, &H35, &H3E, &HF, &H4, &H19, &H12, _
-
&HCB, &HC0, &HDD, &HD6, &HE7, &HEC, &HF1, &HFA, &H93, &H98, &H85, &H8E, &HBF, &HB4, &HA9, &HA2, _
-
&HF6, &HFD, &HE0, &HEB, &HDA, &HD1, &HCC, &HC7, &HAE, &HA5, &HB8, &HB3, &H82, &H89, &H94, &H9F, _
-
&H46, &H4D, &H50, &H5B, &H6A, &H61, &H7C, &H77, &H1E, &H15, &H8, &H3, &H32, &H39, &H24, &H2F, _
-
&H8D, &H86, &H9B, &H90, &HA1, &HAA, &HB7, &HBC, &HD5, &HDE, &HC3, &HC8, &HF9, &HF2, &HEF, &HE4, _
-
&H3D, &H36, &H2B, &H20, &H11, &H1A, &H7, &HC, &H65, &H6E, &H73, &H78, &H49, &H42, &H5F, &H54, _
-
&HF7, &HFC, &HE1, &HEA, &HDB, &HD0, &HCD, &HC6, &HAF, &HA4, &HB9, &HB2, &H83, &H88, &H95, &H9E, _
-
&H47, &H4C, &H51, &H5A, &H6B, &H60, &H7D, &H76, &H1F, &H14, &H9, &H2, &H33, &H38, &H25, &H2E, _
-
&H8C, &H87, &H9A, &H91, &HA0, &HAB, &HB6, &HBD, &HD4, &HDF, &HC2, &HC9, &HF8, &HF3, &HEE, &HE5, _
-
&H3C, &H37, &H2A, &H21, &H10, &H1B, &H6, &HD, &H64, &H6F, &H72, &H79, &H48, &H43, &H5E, &H55, _
-
&H1, &HA, &H17, &H1C, &H2D, &H26, &H3B, &H30, &H59, &H52, &H4F, &H44, &H75, &H7E, &H63, &H68, _
-
&HB1, &HBA, &HA7, &HAC, &H9D, &H96, &H8B, &H80, &HE9, &HE2, &HFF, &HF4, &HC5, &HCE, &HD3, &HD8, _
-
&H7A, &H71, &H6C, &H67, &H56, &H5D, &H40, &H4B, &H22, &H29, &H34, &H3F, &HE, &H5, &H18, &H13, _
-
&HCA, &HC1, &HDC, &HD7, &HE6, &HED, &HF0, &HFB, &H92, &H99, &H84, &H8F, &HBE, &HB5, &HA8, &HA3)
-
-
g13 = Array( _
-
&H0, &HD, &H1A, &H17, &H34, &H39, &H2E, &H23, &H68, &H65, &H72, &H7F, &H5C, &H51, &H46, &H4B, _
-
&HD0, &HDD, &HCA, &HC7, &HE4, &HE9, &HFE, &HF3, &HB8, &HB5, &HA2, &HAF, &H8C, &H81, &H96, &H9B, _
-
&HBB, &HB6, &HA1, &HAC, &H8F, &H82, &H95, &H98, &HD3, &HDE, &HC9, &HC4, &HE7, &HEA, &HFD, &HF0, _
-
&H6B, &H66, &H71, &H7C, &H5F, &H52, &H45, &H48, &H3, &HE, &H19, &H14, &H37, &H3A, &H2D, &H20, _
-
&H6D, &H60, &H77, &H7A, &H59, &H54, &H43, &H4E, &H5, &H8, &H1F, &H12, &H31, &H3C, &H2B, &H26, _
-
&HBD, &HB0, &HA7, &HAA, &H89, &H84, &H93, &H9E, &HD5, &HD8, &HCF, &HC2, &HE1, &HEC, &HFB, &HF6, _
-
&HD6, &HDB, &HCC, &HC1, &HE2, &HEF, &HF8, &HF5, &HBE, &HB3, &HA4, &HA9, &H8A, &H87, &H90, &H9D, _
-
&H6, &HB, &H1C, &H11, &H32, &H3F, &H28, &H25, &H6E, &H63, &H74, &H79, &H5A, &H57, &H40, &H4D, _
-
&HDA, &HD7, &HC0, &HCD, &HEE, &HE3, &HF4, &HF9, &HB2, &HBF, &HA8, &HA5, &H86, &H8B, &H9C, &H91, _
-
&HA, &H7, &H10, &H1D, &H3E, &H33, &H24, &H29, &H62, &H6F, &H78, &H75, &H56, &H5B, &H4C, &H41, _
-
&H61, &H6C, &H7B, &H76, &H55, &H58, &H4F, &H42, &H9, &H4, &H13, &H1E, &H3D, &H30, &H27, &H2A, _
-
&HB1, &HBC, &HAB, &HA6, &H85, &H88, &H9F, &H92, &HD9, &HD4, &HC3, &HCE, &HED, &HE0, &HF7, &HFA, _
-
&HB7, &HBA, &HAD, &HA0, &H83, &H8E, &H99, &H94, &HDF, &HD2, &HC5, &HC8, &HEB, &HE6, &HF1, &HFC, _
-
&H67, &H6A, &H7D, &H70, &H53, &H5E, &H49, &H44, &HF, &H2, &H15, &H18, &H3B, &H36, &H21, &H2C, _
-
&HC, &H1, &H16, &H1B, &H38, &H35, &H22, &H2F, &H64, &H69, &H7E, &H73, &H50, &H5D, &H4A, &H47, _
-
&HDC, &HD1, &HC6, &HCB, &HE8, &HE5, &HF2, &HFF, &HB4, &HB9, &HAE, &HA3, &H80, &H8D, &H9A, &H97)
-
-
g14 = Array( _
-
&H0, &HE, &H1C, &H12, &H38, &H36, &H24, &H2A, &H70, &H7E, &H6C, &H62, &H48, &H46, &H54, &H5A, _
-
&HE0, &HEE, &HFC, &HF2, &HD8, &HD6, &HC4, &HCA, &H90, &H9E, &H8C, &H82, &HA8, &HA6, &HB4, &HBA, _
-
&HDB, &HD5, &HC7, &HC9, &HE3, &HED, &HFF, &HF1, &HAB, &HA5, &HB7, &HB9, &H93, &H9D, &H8F, &H81, _
-
&H3B, &H35, &H27, &H29, &H3, &HD, &H1F, &H11, &H4B, &H45, &H57, &H59, &H73, &H7D, &H6F, &H61, _
-
&HAD, &HA3, &HB1, &HBF, &H95, &H9B, &H89, &H87, &HDD, &HD3, &HC1, &HCF, &HE5, &HEB, &HF9, &HF7, _
-
&H4D, &H43, &H51, &H5F, &H75, &H7B, &H69, &H67, &H3D, &H33, &H21, &H2F, &H5, &HB, &H19, &H17, _
-
&H76, &H78, &H6A, &H64, &H4E, &H40, &H52, &H5C, &H6, &H8, &H1A, &H14, &H3E, &H30, &H22, &H2C, _
-
&H96, &H98, &H8A, &H84, &HAE, &HA0, &HB2, &HBC, &HE6, &HE8, &HFA, &HF4, &HDE, &HD0, &HC2, &HCC, _
-
&H41, &H4F, &H5D, &H53, &H79, &H77, &H65, &H6B, &H31, &H3F, &H2D, &H23, &H9, &H7, &H15, &H1B, _
-
&HA1, &HAF, &HBD, &HB3, &H99, &H97, &H85, &H8B, &HD1, &HDF, &HCD, &HC3, &HE9, &HE7, &HF5, &HFB, _
-
&H9A, &H94, &H86, &H88, &HA2, &HAC, &HBE, &HB0, &HEA, &HE4, &HF6, &HF8, &HD2, &HDC, &HCE, &HC0, _
-
&H7A, &H74, &H66, &H68, &H42, &H4C, &H5E, &H50, &HA, &H4, &H16, &H18, &H32, &H3C, &H2E, &H20, _
-
&HEC, &HE2, &HF0, &HFE, &HD4, &HDA, &HC8, &HC6, &H9C, &H92, &H80, &H8E, &HA4, &HAA, &HB8, &HB6, _
-
&HC, &H2, &H10, &H1E, &H34, &H3A, &H28, &H26, &H7C, &H72, &H60, &H6E, &H44, &H4A, &H58, &H56, _
-
&H37, &H39, &H2B, &H25, &HF, &H1, &H13, &H1D, &H47, &H49, &H5B, &H55, &H7F, &H71, &H63, &H6D, _
-
&HD7, &HD9, &HCB, &HC5, &HEF, &HE1, &HF3, &HFD, &HA7, &HA9, &HBB, &HB5, &H9F, &H91, &H83, &H8D)
-
-
sbox = Array( _
-
&H63, &H7C, &H77, &H7B, &HF2, &H6B, &H6F, &HC5, &H30, &H1, &H67, &H2B, &HFE, &HD7, &HAB, &H76, _
-
&HCA, &H82, &HC9, &H7D, &HFA, &H59, &H47, &HF0, &HAD, &HD4, &HA2, &HAF, &H9C, &HA4, &H72, &HC0, _
-
&HB7, &HFD, &H93, &H26, &H36, &H3F, &HF7, &HCC, &H34, &HA5, &HE5, &HF1, &H71, &HD8, &H31, &H15, _
-
&H4, &HC7, &H23, &HC3, &H18, &H96, &H5, &H9A, &H7, &H12, &H80, &HE2, &HEB, &H27, &HB2, &H75, _
-
&H9, &H83, &H2C, &H1A, &H1B, &H6E, &H5A, &HA0, &H52, &H3B, &HD6, &HB3, &H29, &HE3, &H2F, &H84, _
-
&H53, &HD1, &H0, &HED, &H20, &HFC, &HB1, &H5B, &H6A, &HCB, &HBE, &H39, &H4A, &H4C, &H58, &HCF, _
-
&HD0, &HEF, &HAA, &HFB, &H43, &H4D, &H33, &H85, &H45, &HF9, &H2, &H7F, &H50, &H3C, &H9F, &HA8, _
-
&H51, &HA3, &H40, &H8F, &H92, &H9D, &H38, &HF5, &HBC, &HB6, &HDA, &H21, &H10, &HFF, &HF3, &HD2, _
-
&HCD, &HC, &H13, &HEC, &H5F, &H97, &H44, &H17, &HC4, &HA7, &H7E, &H3D, &H64, &H5D, &H19, &H73, _
-
&H60, &H81, &H4F, &HDC, &H22, &H2A, &H90, &H88, &H46, &HEE, &HB8, &H14, &HDE, &H5E, &HB, &HDB, _
-
&HE0, &H32, &H3A, &HA, &H49, &H6, &H24, &H5C, &HC2, &HD3, &HAC, &H62, &H91, &H95, &HE4, &H79, _
-
&HE7, &HC8, &H37, &H6D, &H8D, &HD5, &H4E, &HA9, &H6C, &H56, &HF4, &HEA, &H65, &H7A, &HAE, &H8, _
-
&HBA, &H78, &H25, &H2E, &H1C, &HA6, &HB4, &HC6, &HE8, &HDD, &H74, &H1F, &H4B, &HBD, &H8B, &H8A, _
-
&H70, &H3E, &HB5, &H66, &H48, &H3, &HF6, &HE, &H61, &H35, &H57, &HB9, &H86, &HC1, &H1D, &H9E, _
-
&HE1, &HF8, &H98, &H11, &H69, &HD9, &H8E, &H94, &H9B, &H1E, &H87, &HE9, &HCE, &H55, &H28, &HDF, _
-
&H8C, &HA1, &H89, &HD, &HBF, &HE6, &H42, &H68, &H41, &H99, &H2D, &HF, &HB0, &H54, &HBB, &H16)
-
-
sboxinv = Array( _
-
&H52, &H9, &H6A, &HD5, &H30, &H36, &HA5, &H38, &HBF, &H40, &HA3, &H9E, &H81, &HF3, &HD7, &HFB, _
-
&H7C, &HE3, &H39, &H82, &H9B, &H2F, &HFF, &H87, &H34, &H8E, &H43, &H44, &HC4, &HDE, &HE9, &HCB, _
-
&H54, &H7B, &H94, &H32, &HA6, &HC2, &H23, &H3D, &HEE, &H4C, &H95, &HB, &H42, &HFA, &HC3, &H4E, _
-
&H8, &H2E, &HA1, &H66, &H28, &HD9, &H24, &HB2, &H76, &H5B, &HA2, &H49, &H6D, &H8B, &HD1, &H25, _
-
&H72, &HF8, &HF6, &H64, &H86, &H68, &H98, &H16, &HD4, &HA4, &H5C, &HCC, &H5D, &H65, &HB6, &H92, _
-
&H6C, &H70, &H48, &H50, &HFD, &HED, &HB9, &HDA, &H5E, &H15, &H46, &H57, &HA7, &H8D, &H9D, &H84, _
-
&H90, &HD8, &HAB, &H0, &H8C, &HBC, &HD3, &HA, &HF7, &HE4, &H58, &H5, &HB8, &HB3, &H45, &H6, _
-
&HD0, &H2C, &H1E, &H8F, &HCA, &H3F, &HF, &H2, &HC1, &HAF, &HBD, &H3, &H1, &H13, &H8A, &H6B, _
-
&H3A, &H91, &H11, &H41, &H4F, &H67, &HDC, &HEA, &H97, &HF2, &HCF, &HCE, &HF0, &HB4, &HE6, &H73, _
-
&H96, &HAC, &H74, &H22, &HE7, &HAD, &H35, &H85, &HE2, &HF9, &H37, &HE8, &H1C, &H75, &HDF, &H6E, _
-
&H47, &HF1, &H1A, &H71, &H1D, &H29, &HC5, &H89, &H6F, &HB7, &H62, &HE, &HAA, &H18, &HBE, &H1B, _
-
&HFC, &H56, &H3E, &H4B, &HC6, &HD2, &H79, &H20, &H9A, &HDB, &HC0, &HFE, &H78, &HCD, &H5A, &HF4, _
-
&H1F, &HDD, &HA8, &H33, &H88, &H7, &HC7, &H31, &HB1, &H12, &H10, &H59, &H27, &H80, &HEC, &H5F, _
-
&H60, &H51, &H7F, &HA9, &H19, &HB5, &H4A, &HD, &H2D, &HE5, &H7A, &H9F, &H93, &HC9, &H9C, &HEF, _
-
&HA0, &HE0, &H3B, &H4D, &HAE, &H2A, &HF5, &HB0, &HC8, &HEB, &HBB, &H3C, &H83, &H53, &H99, &H61, _
-
&H17, &H2B, &H4, &H7E, &HBA, &H77, &HD6, &H26, &HE1, &H69, &H14, &H63, &H55, &H21, &HC, &H7D)
-
-
rcon = Array( _
-
&H8D, &H1, &H2, &H4, &H8, &H10, &H20, &H40, &H80, &H1B, &H36, &H6C, &HD8, &HAB, &H4D, &H9A, _
-
&H2F, &H5E, &HBC, &H63, &HC6, &H97, &H35, &H6A, &HD4, &HB3, &H7D, &HFA, &HEF, &HC5, &H91, &H39, _
-
&H72, &HE4, &HD3, &HBD, &H61, &HC2, &H9F, &H25, &H4A, &H94, &H33, &H66, &HCC, &H83, &H1D, &H3A, _
-
&H74, &HE8, &HCB, &H8D, &H1, &H2, &H4, &H8, &H10, &H20, &H40, &H80, &H1B, &H36, &H6C, &HD8, _
-
&HAB, &H4D, &H9A, &H2F, &H5E, &HBC, &H63, &HC6, &H97, &H35, &H6A, &HD4, &HB3, &H7D, &HFA, &HEF, _
-
&HC5, &H91, &H39, &H72, &HE4, &HD3, &HBD, &H61, &HC2, &H9F, &H25, &H4A, &H94, &H33, &H66, &HCC, _
-
&H83, &H1D, &H3A, &H74, &HE8, &HCB, &H8D, &H1, &H2, &H4, &H8, &H10, &H20, &H40, &H80, &H1B, _
-
&H36, &H6C, &HD8, &HAB, &H4D, &H9A, &H2F, &H5E, &HBC, &H63, &HC6, &H97, &H35, &H6A, &HD4, &HB3, _
-
&H7D, &HFA, &HEF, &HC5, &H91, &H39, &H72, &HE4, &HD3, &HBD, &H61, &HC2, &H9F, &H25, &H4A, &H94, _
-
&H33, &H66, &HCC, &H83, &H1D, &H3A, &H74, &HE8, &HCB, &H8D, &H1, &H2, &H4, &H8, &H10, &H20, _
-
&H40, &H80, &H1B, &H36, &H6C, &HD8, &HAB, &H4D, &H9A, &H2F, &H5E, &HBC, &H63, &HC6, &H97, &H35, _
-
&H6A, &HD4, &HB3, &H7D, &HFA, &HEF, &HC5, &H91, &H39, &H72, &HE4, &HD3, &HBD, &H61, &HC2, &H9F, _
-
&H25, &H4A, &H94, &H33, &H66, &HCC, &H83, &H1D, &H3A, &H74, &HE8, &HCB, &H8D, &H1, &H2, &H4, _
-
&H8, &H10, &H20, &H40, &H80, &H1B, &H36, &H6C, &HD8, &HAB, &H4D, &H9A, &H2F, &H5E, &HBC, &H63, _
-
&HC6, &H97, &H35, &H6A, &HD4, &HB3, &H7D, &HFA, &HEF, &HC5, &H91, &H39, &H72, &HE4, &HD3, &HBD, _
-
&H61, &HC2, &H9F, &H25, &H4A, &H94, &H33, &H66, &HCC, &H83, &H1D, &H3A, &H74, &HE8, &HCB)
-
-
'Dim expandedKey, block(16) As Double, aesKey(32) As Double, i As Integer, j As Integer
-
Dim expandedKey, block(16) As Double, aesKey(16) As Double, i As Integer, j As Integer
-
Dim isDone As Boolean
-
Dim sCipher, sTemp, sTemp1, nOnce(16), priorCipher(16)
-
Dim x As Integer, r As Integer, y As Integer, temp(4), intTemp
-
-
'remove string spaces
-
sTemp = Replace(snOnce, " ", "")
-
'assign Hex-strings to byte arrays
-
'ReDim nOnce(0 To Len(sTemp) / 2 - 1) As Byte
-
'load arrays
-
For i = 0 To UBound(nOnce)
-
nOnce(i) = Application.WorksheetFunction.Hex2Dec(Mid(sTemp, i * 2 + 1, 2))
-
Next i
-
-
'remove string spaces
-
sTemp = Replace(sPass, " ", "")
-
'assign Hex-strings to byte arrays
-
'ReDim nOnce(0 To Len(sTemp) / 2 - 1) As Byte
-
'load Key in array
-
For i = 0 To UBound(aesKey)
-
aesKey(i) = Application.WorksheetFunction.Hex2Dec(Mid(sTemp, i * 2 + 1, 2))
-
Next i
-
-
expandedKey = expandKey(aesKey, sbox, rcon)
-
j = 0
-
isDone = False
-
-
'remove string spaces
-
sTemp1 = Replace(sPlain, " ", "")
-
Do Until isDone
-
sTemp = Mid(sTemp1, j * 32 + 1, 32)
-
'padding last 16 bytes with 00
-
If Len(sTemp) < 32 Then
-
For i = Len(sTemp) To 31
-
sTemp = sTemp & Chr(0)
-
Next
-
End If
-
'load cyphertext in array
-
For i = 0 To 15
-
block(i) = Application.WorksheetFunction.Hex2Dec(Mid(sTemp, i * 2 + 1, 2))
-
Next
-
'check all cyphertext is done
-
If (j + 1) * 32 >= Len(sTemp1) Then
-
isDone = True
-
End If
-
-
j = j + 1
-
-
If toCrypt Then
-
r = 0
-
For i = 0 To 15
-
block(i) = block(i) Xor nOnce(i) Xor expandedKey((i Mod 4) * 4 + (i \ 4))
-
Next
-
-
For x = 1 To 13
-
block(0) = sbox(block(0))
-
block(1) = sbox(block(1))
-
block(2) = sbox(block(2))
-
block(3) = sbox(block(3))
-
-
intTemp = sbox(block(4))
-
block(4) = sbox(block(5))
-
block(5) = sbox(block(6))
-
block(6) = sbox(block(7))
-
block(7) = intTemp
-
-
intTemp = sbox(block(8))
-
block(8) = sbox(block(10))
-
block(10) = intTemp
-
intTemp = sbox(block(9))
-
block(9) = sbox(block(11))
-
block(11) = intTemp
-
-
intTemp = sbox(block(12))
-
block(12) = sbox(block(15))
-
block(15) = sbox(block(14))
-
block(14) = sbox(block(13))
-
block(13) = intTemp
-
-
r = x * 16
-
For i = 0 To 3
-
temp(0) = block(i)
-
temp(1) = block(i + 4)
-
temp(2) = block(i + 8)
-
temp(3) = block(i + 12)
-
-
block(i) = g2(temp(0)) Xor temp(3) Xor temp(2) Xor g3(temp(1)) Xor expandedKey(r + i * 4)
-
block(i + 4) = g2(temp(1)) Xor temp(0) Xor temp(3) Xor g3(temp(2)) Xor expandedKey(r + i * 4 + 1)
-
block(i + 8) = g2(temp(2)) Xor temp(1) Xor temp(0) Xor g3(temp(3)) Xor expandedKey(r + i * 4 + 2)
-
block(i + 12) = g2(temp(3)) Xor temp(2) Xor temp(1) Xor g3(temp(0)) Xor expandedKey(r + i * 4 + 3)
-
Next
-
Next
-
-
block(0) = sbox(block(0)) Xor expandedKey(224)
-
block(1) = sbox(block(1)) Xor expandedKey(228)
-
block(2) = sbox(block(2)) Xor expandedKey(232)
-
block(3) = sbox(block(3)) Xor expandedKey(236)
-
-
intTemp = sbox(block(4)) Xor expandedKey(237)
-
block(4) = sbox(block(5)) Xor expandedKey(225)
-
block(5) = sbox(block(6)) Xor expandedKey(229)
-
block(6) = sbox(block(7)) Xor expandedKey(233)
-
block(7) = intTemp
-
-
intTemp = sbox(block(8)) Xor expandedKey(234)
-
block(8) = sbox(block(10)) Xor expandedKey(226)
-
block(10) = intTemp
-
intTemp = sbox(block(9)) Xor expandedKey(238)
-
block(9) = sbox(block(11)) Xor expandedKey(230)
-
block(11) = intTemp
-
-
intTemp = sbox(block(12)) Xor expandedKey(231)
-
block(12) = sbox(block(15)) Xor expandedKey(227)
-
block(15) = sbox(block(14)) Xor expandedKey(239)
-
block(14) = sbox(block(13)) Xor expandedKey(235)
-
block(13) = intTemp
-
-
For i = 0 To 15
-
nOnce(i) = block(i)
-
Next
-
Else
-
For i = 0 To 15
-
priorCipher(i) = block(i)
-
Next
-
-
block(0) = sboxinv(block(0) Xor expandedKey(224))
-
block(1) = sboxinv(block(1) Xor expandedKey(228))
-
block(2) = sboxinv(block(2) Xor expandedKey(232))
-
block(3) = sboxinv(block(3) Xor expandedKey(236))
-
-
intTemp = sboxinv(block(4) Xor expandedKey(225))
-
block(4) = sboxinv(block(7) Xor expandedKey(237))
-
block(7) = sboxinv(block(6) Xor expandedKey(233))
-
block(6) = sboxinv(block(5) Xor expandedKey(229))
-
block(5) = intTemp
-
-
intTemp = sboxinv(block(8) Xor expandedKey(226))
-
block(8) = sboxinv(block(10) Xor expandedKey(234))
-
block(10) = intTemp
-
intTemp = sboxinv(block(9) Xor expandedKey(230))
-
block(9) = sboxinv(block(11) Xor expandedKey(238))
-
block(11) = intTemp
-
-
intTemp = sboxinv(block(12) Xor expandedKey(227))
-
block(12) = sboxinv(block(13) Xor expandedKey(231))
-
block(13) = sboxinv(block(14) Xor expandedKey(235))
-
block(14) = sboxinv(block(15) Xor expandedKey(239))
-
block(15) = intTemp
-
-
For x = 13 To 1 Step -1
-
r = x * 16
-
-
For i = 0 To 3
-
temp(0) = block(i) Xor expandedKey(r + i * 4)
-
temp(1) = block(i + 4) Xor expandedKey(r + i * 4 + 1)
-
temp(2) = block(i + 8) Xor expandedKey(r + i * 4 + 2)
-
temp(3) = block(i + 12) Xor expandedKey(r + i * 4 + 3)
-
-
block(i) = g14(temp(0)) Xor g9(temp(3)) Xor g13(temp(2)) Xor g11(temp(1))
-
block(i + 4) = g14(temp(1)) Xor g9(temp(0)) Xor g13(temp(3)) Xor g11(temp(2))
-
block(i + 8) = g14(temp(2)) Xor g9(temp(1)) Xor g13(temp(0)) Xor g11(temp(3))
-
block(i + 12) = g14(temp(3)) Xor g9(temp(2)) Xor g13(temp(1)) Xor g11(temp(0))
-
Next
-
-
block(0) = sboxinv(block(0))
-
block(1) = sboxinv(block(1))
-
block(2) = sboxinv(block(2))
-
block(3) = sboxinv(block(3))
-
-
intTemp = sboxinv(block(4))
-
block(4) = sboxinv(block(7))
-
block(7) = sboxinv(block(6))
-
block(6) = sboxinv(block(5))
-
block(5) = intTemp
-
-
intTemp = sboxinv(block(8))
-
block(8) = sboxinv(block(10))
-
block(10) = intTemp
-
intTemp = sboxinv(block(9))
-
block(9) = sboxinv(block(11))
-
block(11) = intTemp
-
-
intTemp = sboxinv(block(12))
-
block(12) = sboxinv(block(13))
-
block(13) = sboxinv(block(14))
-
block(14) = sboxinv(block(15))
-
block(15) = intTemp
-
Next
-
-
r = 0
-
For i = 0 To 15
-
block(i) = block(i) Xor expandedKey((i Mod 4) * 4 + (i \ 4)) Xor nOnce(i)
-
nOnce(i) = priorCipher(i)
-
Next
-
End If
-
-
For i = 0 To 15
-
sCipher = sCipher & Application.WorksheetFunction.Dec2Hex(block(i), 2)
-
Next
-
Loop
-
'return cyphertext Crypt/Decrypt
-
stringAES = sCipher
-
End Function
-
Rather than converting everything to use hex representation, it would be easier if you converted your hex representation to its ASCII string equivalence so you just need to do the translation at the beginning and the end.
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