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(Objective-C) SSH Host Key FingerprintSee more SSH ExamplesDemonstrates how to get the SSH server's host key fingerprint after connecting.
#import <CkoSsh.h> #import <NSString.h> // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. CkoSsh *ssh = [[CkoSsh alloc] init]; NSString *hostname = @"ssh.example.com"; int port = 22; BOOL success = [ssh Connect: hostname port: [NSNumber numberWithInt: port]]; if (success != YES) { NSLog(@"%@",ssh.LastErrorText); return; } // Get the classic MD5 fingeprint NSString *md5_fingerprint = ssh.HostKeyFingerprint; NSLog(@"%@",md5_fingerprint); // Sample output: // ssh-rsa 3072 21:b0:d8:41:4e:ef:78:10:20:af:01:b7:71:5d:eb:94 // Starting in Chilkat v9.5.0.92, we can also get the SHA256 fingerprint. // (it is also possible to get fingerprints using other hash algorithms such as SHA384, SHA512, etc.) BOOL includeKeyType = YES; BOOL includeHashName = YES; NSString *sha256_fingerprint = [ssh GetHostKeyFP: @"SHA256" includeKeyType: includeKeyType includeHashName: includeHashName]; NSLog(@"%@",sha256_fingerprint); // Sample output: // ssh-rsa SHA256:Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY= // The key type and hash name can be optionally included or not. includeKeyType = NO; includeHashName = YES; sha256_fingerprint = [ssh GetHostKeyFP: @"SHA256" includeKeyType: includeKeyType includeHashName: includeHashName]; NSLog(@"%@",sha256_fingerprint); // SHA256:Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY= includeKeyType = YES; includeHashName = NO; sha256_fingerprint = [ssh GetHostKeyFP: @"SHA256" includeKeyType: includeKeyType includeHashName: includeHashName]; NSLog(@"%@",sha256_fingerprint); // ssh-rsa Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY= includeKeyType = NO; includeHashName = NO; sha256_fingerprint = [ssh GetHostKeyFP: @"SHA256" includeKeyType: includeKeyType includeHashName: includeHashName]; NSLog(@"%@",sha256_fingerprint); // Ufgj480OsdsCZRjj9sSNM6fpgIcSJ61RsIG8usndUIY= |
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