digest

I need to digitally sign a String using the SHA-1 digest algorithm first and then apply the RSA algorithm, using a PrivateKey to sign it. I already have the PrivateKey stored in my database as data type char(250) in base64. My problem is that I don't know how to convert it into a PrivateKey for using it for signing in: Cipher cipher = Cipher.getInstance("RSA"); cipher.init(Cipher.ENCRYPT_MODE, privateKey); byte[] cipherText = cipher.doFinal(digest); Digest was an array of bytes to which I applied the SHA-1 digest algorithm: MessageDigest md = MessageDigest.getInstance("SHA-1"); byte [] ba =

I can't make MessageDigest work, the program gives me two error: UnsupportedEncodingException, NoSuchAlgorithmException byte[] bytesOfchat_key = "lol".getBytes("UTF-8"); MessageDigest md = MessageDigest.getInstance("MD5"); byte[] Digest = md.digest(bytesOfchat_key); If I throw the errors, it give me ﾜ￟ﾴ9ￇﾇnp>0xd￉z as response ( 16 chars ) PS: I have used to print the Digest for (byte b : Digest) { System.out.print((char)b); } md5 returns hexadecimal numbers, so for decoding it to a String you could use String plaintext = "lol"; MessageDigest m = MessageDigest.getInstance("MD5"); m.reset(); m

I am trying to build a working encrypted signature for the Amazon S3 web service, writing a connection library using Objective C. I have run into HMAC SHA-1 digest problems with the ObjC code, so I'm putting that to the side and looking at existing, working Perl code, to try to troubleshoot digest creation. I am testing HMAC SHA-1 digest output from the s3ls command of the Net::Amazon::S3 package and comparing that against the _encode subroutine that I pulled out and put into its own perl script: #!/usr/bin/perl -w use MIME::Base64 qw(encode_base64); use Digest::HMAC_SHA1; use String::Escape

I am trying to make hash a password value according to sha256. I already search this but there is no info about swift 2. This solution did not worked for me func sha256(data:String) -> String { let data = self.dataUsingEncoding(NSUTF8StringEncoding)! var digest = [UInt8](count:Int(CC_SHA256_DIGEST_LENGTH), repeatedValue: 0) CC_SHA256(data.bytes, CC_LONG(data.length), &digest) let hexBytes = digest.map { String(format: "%02hhx", $0) } return hexBytes.joinWithSeparator("") } It gives error: Use of unresolved identifier CC_SHA256_DIGEST_LENGTH Add a bridging header and add the import to it:

I want to use HTTP Digest Authentication with a central database that stores usernames and encrypted passwords. These data should be used by different servers like Apache httpd or Tomcat for example. The clients will be humans with browsers and other applications communicating in a RESTful way. As far as I understand I could not use a table with hashed passwords. It is only possibly to store HA1 = MD5(username:realm:password) where a clear text password is required - correct? On the other hand it seems to be possible to use hashed passwords with Apache httpd: Apache httpd doc says: The first