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| # | Location | File | Last Modified |
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| 1 | Fri Oct 27 02:44:23 2017 UTC | ||
| 2 | OSCIF_BMS_v2_iter 2_September_2017.zip\BMS_Cand\Source\Sources\BMS.Vista.TestEis\BMS.Utils | CustomEncryption.cs | Wed Oct 18 18:47:02 2017 UTC |
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| 1 | using Syst em; | |||||
| 2 | using Syst em.Securit y.Cryptogr aphy; | |||||
| 3 | using Syst em.Text; | |||||
| 4 | using Syst em.IO; | |||||
| 5 | using Syst em.Collect ions.Gener ic; | |||||
| 6 | ||||||
| 7 | namespace BMS.Utils | |||||
| 8 | { | |||||
| 9 | class Encryptors | |||||
| 10 | { | |||||
| 11 | pu blic ICryp toTransfor m Encrypto r { get; s et; } | |||||
| 12 | pu blic ICryp toTransfor m Decrypto r { get; s et; } | |||||
| 13 | } | |||||
| 14 | ||||||
| 15 | public class Cus tomEncrypt ion | |||||
| 16 | { | |||||
| 17 | co nst string str = "Lg BTAHUAcABl AHIALgBTAG UAYwByAGUA dAAuAFAAQA BhAHMAcwB3 AG8AcgBkAC 4A"; | |||||
| 18 | st atic Dicti onary<stri ng, Encryp tors> salt Encryptors = new Dic tionary<st ring, Encr yptors>(); | |||||
| 19 | ||||||
| 20 | // / <summary > | |||||
| 21 | // / Encrypti on method. | |||||
| 22 | // / </summar y> | |||||
| 23 | // / <param n ame="input ">string t o encrypt< /param> | |||||
| 24 | // / <param n ame="salt" >salt used for encry ption</par am> | |||||
| 25 | // / <returns >encrypted string</r eturns> | |||||
| 26 | pu blic stati c string E ncrypt(str ing input, string sa lt) | |||||
| 27 | { | |||||
| 28 | DateTime entryInLo gMethodTim e = DateTi me.UtcNow; | |||||
| 29 | if (Info World.Trac ing.IWTrac e.IsEntryE nabled) | |||||
| 30 | { | |||||
| 31 | Info World.Trac ing.IWTrac e.Entry(Sy stem.Refle ction.Meth odBase.Get CurrentMet hod(), ent ryInLogMet hodTime); | |||||
| 32 | } | |||||
| 33 | try | |||||
| 34 | { | |||||
| 35 | if ( !saltEncry ptors.Cont ainsKey(sa lt)) | |||||
| 36 | { | |||||
| 37 | // symmetr ic encrypt ion algori thm | |||||
| 38 | using (Aes Managed ae s = new Ae sManaged() ) | |||||
| 39 | { | |||||
| 40 | byte[] saltBytes = UTF8Enc oding.UTF8 .GetBytes( salt); | |||||
| 41 | // We' re using t he PBKDF2 standard f or passwor d-based ke y generati on | |||||
| 42 | using (Rfc2898De riveBytes rfc = new Rfc2898Der iveBytes(U TF8Encodin g.Unicode. GetString( Convert.Fr omBase64St ring(str)) , saltByte s)) | |||||
| 43 | { | |||||
| 44 | ae s.Key = rf c.GetBytes (aes.KeySi ze / 8); | |||||
| 45 | ae s.IV = rfc .GetBytes( aes.BlockS ize / 8); | |||||
| 46 | } | |||||
| 47 | saltEn cryptors.A dd(salt, n ew Encrypt ors() { En cryptor = aes.Create Encryptor( ), Decrypt or = aes.C reateDecry ptor() }); | |||||
| 48 | } | |||||
| 49 | } | |||||
| 50 | ||||||
| 51 | usin g (MemoryS tream encr yptStream = new Memo ryStream() ) | |||||
| 52 | { | |||||
| 53 | byte[] utf data = UTF 8Encoding. UTF8.GetBy tes(input) ; | |||||
| 54 | CryptoStre am encrypt or = new C ryptoStrea m(encryptS tream, sal tEncryptor s[salt].En cryptor, C ryptoStrea mMode.Writ e); | |||||
| 55 | ||||||
| 56 | encryptor. Write(utfd ata, 0, ut fdata.Leng th); | |||||
| 57 | encryptor. Flush(); | |||||
| 58 | encryptor. FlushFinal Block(); | |||||
| 59 | ||||||
| 60 | return Enc ryptor.Con vertToAlph abetString (encryptSt ream.ToArr ay()); | |||||
| 61 | } | |||||
| 62 | } | |||||
| 63 | finally | |||||
| 64 | { | |||||
| 65 | if ( InfoWorld. Tracing.IW Trace.IsEx itEnabled) | |||||
| 66 | { | |||||
| 67 | InfoWorld. Tracing.IW Trace.Exit (System.Re flection.M ethodBase. GetCurrent Method(), DateTime.U tcNow, ent ryInLogMet hodTime); | |||||
| 68 | } | |||||
| 69 | } | |||||
| 70 | } | |||||
| 71 | ||||||
| 72 | // / <summary > | |||||
| 73 | // / Decrypti on method. | |||||
| 74 | // / </summar y> | |||||
| 75 | // / <param n ame="input ">String t o decrypt. </param> | |||||
| 76 | // / <param n ame="salt" >salt used for decry ption</par am> | |||||
| 77 | // / <returns >Decrypted string.</ returns> | |||||
| 78 | pu blic stati c string D ecrypt(str ing input, string sa lt) | |||||
| 79 | { | |||||
| 80 | DateTime entryInLo gMethodTim e = DateTi me.UtcNow; | |||||
| 81 | if (Info World.Trac ing.IWTrac e.IsEntryE nabled) | |||||
| 82 | { | |||||
| 83 | Info World.Trac ing.IWTrac e.Entry(Sy stem.Refle ction.Meth odBase.Get CurrentMet hod(), ent ryInLogMet hodTime); | |||||
| 84 | } | |||||
| 85 | try | |||||
| 86 | { | |||||
| 87 | if ( !saltEncry ptors.Cont ainsKey(sa lt)) | |||||
| 88 | { | |||||
| 89 | // symmetr ic encrypt ion algori thm | |||||
| 90 | using (Aes Managed ae s = new Ae sManaged() ) | |||||
| 91 | { | |||||
| 92 | byte[] saltBytes = UTF8Enc oding.UTF8 .GetBytes( salt); | |||||
| 93 | // We' re using t he PBKDF2 standard f or passwor d-based ke y generati on | |||||
| 94 | using (Rfc2898De riveBytes rfc = new Rfc2898Der iveBytes(U TF8Encodin g.Unicode. GetString( Convert.Fr omBase64St ring(str)) , saltByte s)) | |||||
| 95 | { | |||||
| 96 | ae s.Key = rf c.GetBytes (aes.KeySi ze / 8); | |||||
| 97 | ae s.IV = rfc .GetBytes( aes.BlockS ize / 8); | |||||
| 98 | } | |||||
| 99 | saltEn cryptors.A dd(salt, n ew Encrypt ors() { En cryptor = aes.Create Encryptor( ), Decrypt or = aes.C reateDecry ptor() }); | |||||
| 100 | } | |||||
| 101 | } | |||||
| 102 | ||||||
| 103 | // O utput stre am, can be also a Fi leStream | |||||
| 104 | usin g (MemoryS tream decr yptStream = new Memo ryStream() ) | |||||
| 105 | { | |||||
| 106 | byte[] enc ryptBytes = Encrypto r.ConvertF romAlphabe tString(in put); | |||||
| 107 | CryptoStre am decrypt or = new C ryptoStrea m(decryptS tream, sal tEncryptor s[salt].De cryptor, C ryptoStrea mMode.Writ e); | |||||
| 108 | ||||||
| 109 | decryptor. Write(encr yptBytes, 0, encrypt Bytes.Leng th); | |||||
| 110 | decryptor. Flush(); | |||||
| 111 | decryptor. FlushFinal Block(); | |||||
| 112 | ||||||
| 113 | // Showing our decry pted conte nt | |||||
| 114 | byte[] dec ryptBytes = decryptS tream.ToAr ray(); | |||||
| 115 | return UTF 8Encoding. UTF8.GetSt ring(decry ptBytes, 0 , decryptB ytes.Lengt h); | |||||
| 116 | } | |||||
| 117 | } | |||||
| 118 | catch (E xception e x) | |||||
| 119 | { | |||||
| 120 | thro w new Exce ption("Str ing to dec rypt is in correct!", ex); | |||||
| 121 | } | |||||
| 122 | finally | |||||
| 123 | { | |||||
| 124 | if ( InfoWorld. Tracing.IW Trace.IsEx itEnabled) | |||||
| 125 | { | |||||
| 126 | InfoWorld. Tracing.IW Trace.Exit (System.Re flection.M ethodBase. GetCurrent Method(), DateTime.U tcNow, ent ryInLogMet hodTime); | |||||
| 127 | } | |||||
| 128 | } | |||||
| 129 | } | |||||
| 130 | ||||||
| 131 | pu blic stati c string G etRandomSa lt(string userName) | |||||
| 132 | { | |||||
| 133 | DateTime entryInLo gMethodTim e = DateTi me.UtcNow; | |||||
| 134 | if (Info World.Trac ing.IWTrac e.IsEntryE nabled) | |||||
| 135 | { | |||||
| 136 | Info World.Trac ing.IWTrac e.Entry(Sy stem.Refle ction.Meth odBase.Get CurrentMet hod(), ent ryInLogMet hodTime); | |||||
| 137 | } | |||||
| 138 | try | |||||
| 139 | { | |||||
| 140 | retu rn Convert .ToBase64S tring(ASCI IEncoding. ASCII.GetB ytes(userN ame)); | |||||
| 141 | } | |||||
| 142 | finally | |||||
| 143 | { | |||||
| 144 | if ( InfoWorld. Tracing.IW Trace.IsEx itEnabled) | |||||
| 145 | { | |||||
| 146 | InfoWorld. Tracing.IW Trace.Exit (System.Re flection.M ethodBase. GetCurrent Method(), DateTime.U tcNow, ent ryInLogMet hodTime); | |||||
| 147 | } | |||||
| 148 | } | |||||
| 149 | } | |||||
| 150 | } | |||||
| 151 | } |
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