OC des encryption, so that with the Java cipher class with the Des/cbc/pkcs5padding method of encryption results same

Problem Description:

Des encryption is used recently and is consistent with the results of Java's cipher class encryption. The cliper of Java has not been studied, but in work cipher generates a string based on the Des/cbc/pkcs5padding encryption method.

In comparison, this string is formatted directly with the NSData generated by OC encryption ([NSString stringwithformat:@ "%@", data]). So I used it first.

The code is as follows:

#import "Commoncrypto/commoncryptor.h" + (NSString *) Encryptusedes: (NSString *) plaintext Andkey: (NSString *) AuthKey    Andiv: (NSString *) authiv{const void *IV = (const void *) [Authiv utf8string];    NSString *ciphertext = nil;    NSData *textdata = [plaintext datausingencoding:nsutf8stringencoding];    Nsuinteger datalength = [TextData length];    unsigned char buffer[1024];    memset (buffer, 0, sizeof (char));    size_t numbytesencrypted = 0;                                          Cccryptorstatus cryptstatus = Cccrypt (Kccencrypt, Kccalgorithmdes,                                          Kccoptionpkcs7padding, [AuthKey utf8string],                                          Kcckeysizedes, IV,                                          [TextData bytes], datalength,     Buffer, 1024,                                     &numbytesencrypted);         if (Cryptstatus = = kccsuccess) {NSData *data = [NSData datawithbytes:buffer length: (Nsuinteger) numbytesencrypted];        NSString *oristr = [NSString stringwithformat:@ "%@", data];        Nscharacterset *cset = [Nscharacterset charactersetwithcharactersinstring:@ "< >"];    ciphertext = [[Oristr Componentsseparatedbycharactersinset:cset] componentsjoinedbystring:@ ""]; } return ciphertext;}

OC des encryption, so that with the Java cipher class with the Des/cbc/pkcs5padding method of encryption results same