Results for: "OptionParser"

Returns the first number in this arithmetic sequence, or an array of the first n elements.

Returns the base64 encoded hash value of a given string. The return value is properly padded with ‘=’ and contains no line feeds.

Reset the digest to its initial state and return self.

Close this handle.

Calling close more than once will raise a Fiddle::DLError exception.

Returns a new Fiddle::Pointer instance that is a dereferenced pointer for this pointer.

Analogous to the star operator in C.

Fully resets the internal state of the Cipher. By using this, the same Cipher instance may be used several times for encryption or decryption tasks.

Internally calls EVP_CipherInit_ex(ctx, NULL, NULL, NULL, NULL, -1).

Initializes the Cipher for encryption.

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

• key=, iv=, random_key, random_iv, pkcs5_keyivgen

Internally calls EVP_CipherInit_ex(ctx, NULL, NULL, NULL, NULL, 1).

Initializes the Cipher for decryption.

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

• key=, iv=, random_key, random_iv, pkcs5_keyivgen

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

Indicated whether this Cipher instance uses an Authenticated Encryption mode.

Enables or disables padding. By default encryption operations are padded using standard block padding and the padding is checked and removed when decrypting. If the pad parameter is zero then no padding is performed, the total amount of data encrypted or decrypted must then be a multiple of the block size or an error will occur.

See EVP_CIPHER_CTX_set_padding for further information.

Resets the Digest in the sense that any Digest#update that has been performed is abandoned and the Digest is set to its initial state again.

Returns a new instance of OpenSSL::Cipher by name, if it is available in this engine.

An EngineError will be raised if the cipher is unavailable.

e = OpenSSL::Engine.by_id("openssl")
 => #<OpenSSL::Engine id="openssl" name="Software engine support">
e.cipher("RC4")
 => #<OpenSSL::Cipher:0x007fc5cacc3048>

Returns hmac as it was when it was first initialized, with all processed data cleared from it.

Example

data = "The quick brown fox jumps over the lazy dog"
instance = OpenSSL::HMAC.new('key', OpenSSL::Digest.new('sha1'))
#=> f42bb0eeb018ebbd4597ae7213711ec60760843f

instance.update(data)
#=> de7c9b85b8b78aa6bc8a7a36f70a90701c9db4d9
instance.reset
#=> f42bb0eeb018ebbd4597ae7213711ec60760843f