Add function decryptData

[btnguyen2k]

Implement decryption function.

[ideawu]

Hi, it doesn't work. The function should be:

+ (NSString *)decryptString:(NSString *)enc privateKey:(NSString *)pubKey;

It should decrypt the result returned by

+ (NSString *)encryptString:(NSString *)str publicKey:(NSString *)pubKey;

[btnguyen2k]

@ideawu, I assume the following flow:

• iOS (encrypt with public key) --> PHP (decrypt with private key), and
• PHP (encrypt with private key) --> iOS (decrypt with public key).

Either case, the iOS app only has the public key to encrypt and decrypt. Hence, my decrypt function is "decryptWithPublicKey"

Test with this string, it should work: PUBLIC_KEY = "MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAJh+/sdLdlVVcM5V5/j/RbwM8SL++Sc3dMqMK1nP73XYKhvO63bxPkWwaY0kwcUU40+QducwjueVOzcPFvHf+fECAwEAAQ=="; PRIVATE_KEY = "MIIBVQIBADANBgkqhkiG9w0BAQEFAASCAT8wggE7AgEAAkEAmH7+x0t2VVVwzlXn+P9FvAzxIv75Jzd0yowrWc/vddgqG87rdvE+RbBpjSTBxRTjT5B25zCO55U7Nw8W8d/58QIDAQABAkBCNqIZlsKCut6IOPTIQM7eoB/zuhIk3QdxCvunu4mV+OIv00b6lN02ZsQ64nblu6dP9UuhlyclFaGlXtwqfkABAiEA0XQlb0mT5cZ8VpNNOqojeWoyrvQIRPGhdBrq3VroT4ECIQC6YoVd0yaT6lUDV+tgKtNbQN8m9hVIMgE/awRT/aXicQIhAK+jIbEMlgTcSG+g3eYPveeWciHbaQPHS4g8+i3ciWoBAiBddJsEwaQ9VKlN5N67uJ2DyxJZediP+6rOfr2L08pCsQIhAJLmeidBF0uJxNZiBgnkIHlRQ167qE1D0s5SQ2j5217G";

Encrypted String: "NpdBZEm3AasQO/AvFD/ss8HehniOy3nS5b85MwOexZTRoKqQbK+Nu5tWjr+ZIynaC5ij+XJ8+iqNoIpzHVQ/+A==" Decrypt that string should return "This is a test"

Edit: I am working on 2 more functions:

• encrypt with private key, and
• decrypt with private key But it should wait a bit more

[ideawu]

Good! I will wait for the other 2 functions.

[ideawu]

So we need:

+ (NSData *)encryptData:(NSData *)data privateKey:(NSString *)privKey;
+ (NSData *)decryptData:(NSData *)data publicKey:(NSString *)pubKey;
+ (NSData *)decryptData:(NSData *)data privateKey:(NSString *)privKey;

[ideawu]

And must use TAB to indent.