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    <p>1) Source of Blowfish routines from David Madore: <a href="ftp://quatramaran.ens.fr/pub/madore/misc/blowfish.c">ftp://quatramaran.ens.fr/pub/madore/misc/blowfish.c</a></p> <p>Pls note that in this source .h part should be separated from the .c file.</p> <p>2) To use Pandora API we have to use the passwords given by its wiki page here: <a href="http://pan-do-ra-api.wikia.com/wiki/Json/5/partners">http://pan-do-ra-api.wikia.com/wiki/Json/5/partners</a></p> <p>Currently decrypt password is: <code>20zE1E47BE57$51</code></p> <p>3) Use this code snippet (standing on great programmers' shoulders) - original Pandora API implementation is here: <a href="https://github.com/alexcrichton/hermes">https://github.com/alexcrichton/hermes</a></p> <p>In AppDelegate.h (for simplicity)</p> <pre><code>#define PARTNER_DECRYPT "20zE1E47BE57$51" ... -(NSData*) PandoraDecrypt:(NSString*) string; </code></pre> <p>In AppDelegate.m</p> <pre><code>static char h2i[256] = { ['0'] = 0, ['1'] = 1, ['2'] = 2, ['3'] = 3, ['4'] = 4, ['5'] = 5, ['6'] = 6, ['7'] = 7, ['8'] = 8, ['9'] = 9, ['a'] = 10, ['b'] = 11, ['c'] = 12, ['d'] = 13, ['e'] = 14, ['f'] = 15 }; static void appendByte(unsigned char byte, void *_data) { NSMutableData *data = (__bridge NSMutableData*) _data; NSLog(@"pre: %@", data); [data appendBytes:&amp;byte length:1]; NSLog(@"post: %@", data); } -(NSData*) PandoraDecrypt:(NSString*) string { struct blf_ecb_ctx ctx; NSMutableData *mut = [[NSMutableData alloc] init]; Blowfish_ecb_start(&amp;ctx, FALSE, (unsigned char*) PARTNER_DECRYPT, sizeof(PARTNER_DECRYPT) - 1, appendByte, (__bridge void*) mut); const char *bytes = [string cStringUsingEncoding:NSASCIIStringEncoding]; int len = [string lengthOfBytesUsingEncoding:NSASCIIStringEncoding]; int i; for (i = 0; i &lt; len; i += 2) { NSLog(@"%c, %c, %d, %d", bytes[i], bytes[i+1], h2i[(int) bytes[i]] * 16, h2i[(int) bytes[i + 1]]); Blowfish_ecb_feed(&amp;ctx, h2i[(int) bytes[i]] * 16 + h2i[(int) bytes[i + 1]]); } Blowfish_ecb_stop(&amp;ctx); return mut; } </code></pre> <p>And you can use this like:</p> <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { NSLog(@"%@", [NSString stringWithCString:[ [self PandoraDecrypt:@"aed5c110d793f850521a4dd3a56a70d9"] bytes] encoding:NSASCIIStringEncoding]); return YES; } </code></pre> <p>So it was mainly a research from my side, pls give credit to implementers of the Blowfish api and the pandora api ;-) Also my NSLogs are for research purpose, it highlights how the decryption works.</p>
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    1. COthanks your code help me alot. just one little problem. i am getting "aYzY1380188405 ~Ixÿ" few special characters at the end. can we remove these special characters from last? output should be "aYzY1380188405".
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    2. COi have to more dig into the blowfish code since this came from the second 8 character block's decryption.
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    3. COok, i am also doing researching on it
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