Ruby OpenSSL Cipher -

when instantiate cipher aes gcm so, works:

openssl::cipher.new('aes-256-gcm')

however, unsupported cipher error when following (the way mentioned in docs):

openssl::cipher::aes.new(256, :gcm)

is there difference between 2 (i.e. former equivalent latter)?

>> openssl::openssl_version => "openssl 1.0.1e 11 feb 2013"

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