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(Objective-C) RSA Sign using Base64 Private KeySigns a string using a non-encrypted RSA private key in base64 encoding. Returns the RSA signature as a base64 string.
#import <CkoPrivateKey.h> #import <CkoStringBuilder.h> #import <CkoRsa.h> #import <NSString.h> // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkoPrivateKey *privKey = [[CkoPrivateKey alloc] init]; BOOL success; CkoStringBuilder *sbPem = [[CkoStringBuilder alloc] init]; [sbPem AppendLine: @"-----BEGIN RSA PRIVATE KEY-----" crlf: YES]; [sbPem AppendLine: @"MIIC .... j5A==" crlf: YES]; [sbPem AppendLine: @"-----END RSA PRIVATE KEY-----" crlf: YES]; success = [privKey LoadPem: [sbPem GetAsString]]; if (success != YES) { NSLog(@"%@",privKey.LastErrorText); return; } CkoRsa *rsa = [[CkoRsa alloc] init]; success = [rsa ImportPrivateKeyObj: privKey]; if (success != YES) { NSLog(@"%@",rsa.LastErrorText); return; } rsa.EncodingMode = @"base64"; NSString *strSigned = [rsa OpenSslSignStringENC: @"12345678"]; NSLog(@"%@",strSigned); NSString *strOriginal = [rsa OpenSslVerifyStringENC: strSigned]; NSLog(@"%@",strOriginal); |
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