(Objective-C) UN/EDIFACT Syntax Level A Encoding/Decoding

Demonstrates the new "eda" encoding that can be used throughout Chilkat starting in v9.5.0.65.

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#import <CkoStringBuilder.h>
#import <CkoCrypt2.h>
#import <NSString.h>

// Note: Requires Chilkat v9.5.0.65 or greater.

CkoStringBuilder *sb = [[CkoStringBuilder alloc] init];
[sb Append: @"The 5 men of 223rd St"];
NSLog(@"%@",[sb GetAsString]);

// Encode the utf-8 byte representation of the string in the 
// UN/EDIFACT syntax level A character set.
[sb Encode: @"eda" charset: @"utf-8"];
NSLog(@"%@",[sb GetAsString]);

// EDA Output should be: BTME027FCF6CFARFI94JT6.)F(14KJ2U

// Decode back to the original string.
[sb Decode: @"eda" charset: @"utf-8"];
NSLog(@"%@",[sb GetAsString]);
NSLog(@"%@",@"----");

// The following requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// The "eda" encoding can be used anywhere within Chilkat.
// For example, with the Crypt2 API
CkoCrypt2 *crypt = [[CkoCrypt2 alloc] init];
crypt.CryptAlgorithm = @"aes";
crypt.CipherMode = @"cbc";
crypt.KeyLength = [NSNumber numberWithInt:256];
crypt.EncodingMode = @"eda";

NSString *ivHex = @"000102030405060708090A0B0C0D0E0F";
[crypt SetEncodedIV: ivHex encoding: @"hex"];
NSString *keyHex = @"000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F";
[crypt SetEncodedKey: keyHex encoding: @"hex"];

NSString *encStr = [crypt EncryptStringENC: @"The quick brown fox jumps over the lazy dog."];
// The output is UN/EDIFACT syntax level A 
NSLog(@"%@",encStr);

// Now decrypt:
NSString *decStr = [crypt DecryptStringENC: encStr];
NSLog(@"%@",decStr);