CBHDigestKit

Makes calculating digests easy.

Supports:

• SHA-224
• SHA-256
• SHA-386
• SHA-512
• SHA-1
• MD2
• MD4
• MD5

Use

CBHDigestKit extends NSData and NSString with a category adding methods for several digests and converting from bytesToHex.

Example:

Compute the SHA-256 digest of a NSString:

NSData *digest = [@"This is a string." sha256UsingEncoding:NSUTF8StringEncoding];

Compute the SHA-256 digest of a NSData:

NSData *digest = [[NSData dataWithContentsOfFile:@"/etc/hosts"] sha256];

Efficiently compute the SHA-256 digest of a file:

NSInputStream *fileStream = [NSInputStream inputStreamWithFileAtPath:@"/etc/hosts"];
NSData *digest = [CBHDigester digestStream:fileStream usingAlgorithm:CBHDigestAlgorithm_SHA256];

Compute and print a digest using an arbitrary algorithm:

CBHDigestAlgorithm algorithm = ...
NSData *data = [NSData dataWithContentsOfFile:@"/etc/hosts"];
NSData *digest = [data digestUsingAlgorithm:algorithm];
NSLog(@"0x%@", [digest encodeAsHexadecimal]);

Licence

CBHDigestKit is available under the ISC license.