JezK
Edit File: hmac.rb
# frozen_string_literal: true module OpenSSL class HMAC # Securely compare with another HMAC instance in constant time. def ==(other) return false unless HMAC === other return false unless self.digest.bytesize == other.digest.bytesize OpenSSL.fixed_length_secure_compare(self.digest, other.digest) end # :call-seq: # hmac.base64digest -> string # # Returns the authentication code an a Base64-encoded string. def base64digest [digest].pack("m0") end class << self # :call-seq: # HMAC.digest(digest, key, data) -> aString # # Returns the authentication code as a binary string. The _digest_ parameter # specifies the digest algorithm to use. This may be a String representing # the algorithm name or an instance of OpenSSL::Digest. # # === Example # key = 'key' # data = 'The quick brown fox jumps over the lazy dog' # # hmac = OpenSSL::HMAC.digest('SHA1', key, data) # #=> "\xDE|\x9B\x85\xB8\xB7\x8A\xA6\xBC\x8Az6\xF7\n\x90p\x1C\x9D\xB4\xD9" def digest(digest, key, data) hmac = new(key, digest) hmac << data hmac.digest end # :call-seq: # HMAC.hexdigest(digest, key, data) -> aString # # Returns the authentication code as a hex-encoded string. The _digest_ # parameter specifies the digest algorithm to use. This may be a String # representing the algorithm name or an instance of OpenSSL::Digest. # # === Example # key = 'key' # data = 'The quick brown fox jumps over the lazy dog' # # hmac = OpenSSL::HMAC.hexdigest('SHA1', key, data) # #=> "de7c9b85b8b78aa6bc8a7a36f70a90701c9db4d9" def hexdigest(digest, key, data) hmac = new(key, digest) hmac << data hmac.hexdigest end # :call-seq: # HMAC.base64digest(digest, key, data) -> aString # # Returns the authentication code as a Base64-encoded string. The _digest_ # parameter specifies the digest algorithm to use. This may be a String # representing the algorithm name or an instance of OpenSSL::Digest. # # === Example # key = 'key' # data = 'The quick brown fox jumps over the lazy dog' # # hmac = OpenSSL::HMAC.base64digest('SHA1', key, data) # #=> "3nybhbi3iqa8ino29wqQcBydtNk=" def base64digest(digest, key, data) [digest(digest, key, data)].pack("m0") end end end end