From: king.sabri@...
Date: 2018-01-03T19:54:01+00:00
Subject: [ruby-core:84620] [Ruby trunk Bug#14278] Ambiguous Exception for	OpenSSL::HMAC.digest

Issue #14278 has been reported by KINGSABRI (KING SABRI).

----------------------------------------
Bug #14278: Ambiguous Exception for OpenSSL::HMAC.digest
https://bugs.ruby-lang.org/issues/14278

* Author: KINGSABRI (KING SABRI)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.4.2p198 (2017-09-14 revision 59899) [x86_64-linux-gnu]
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN
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The `OpenSSL::HMAC.digest` shows unclear and ambiguous exception when key is nil.


~~~ ruby
require 'openssl'

key = nil
OpenSSL::HMAC.digest(OpenSSL::Digest.new('sha256'), key, 'RubyRuby')
TypeError: no implicit conversion of nil into String
`digest'
~~~

**Expected Behavior**
So clear and understandable issue, such: 

~~~ text
key argument cannot be nil for OpenSSL::HMAC.digest
~~~








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