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Maintenance Ruby 3.4 gets fixes, but no new features. Switch to Ruby 4.0 →

instance method

OpenSSL::Cipher#decrypt

() -> self
cipher.decrypt → self

Initializes the Cipher for decryption.

Make sure to call Cipher#encrypt or Cipher#decrypt before using any of the following methods:

Internally calls EVP_CipherInit_ex(ctx, NULL, NULL, NULL, NULL, 0).

See also #ccm_data_len= #encrypt #block_size #final also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0