class Izokatu::Openssl::PrivateKey::Auth::Decrypter
OpenSSL private key decrypter for authenticated ciphers
Constants
- DEFAULT_AUTH_TAG_LENGTH
Attributes
auth_data[R]
@return [String] authenticated data
auth_tag[R]
@return [String] authentication tag
Public Class Methods
new(auth_data:, auth_tag:, cipher:, encrypted_data:, key:, nonce:)
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Initializing options for OpenSSL EC decryption
@param encrypted_data (encrypted_data
) @param cipher (cipher
) @param key (key
) @param nonce (nonce
) @param auth_data
(auth_data
) @param auth_tag
(auth_tag
)
@since 0.1.0
Calls superclass method
Izokatu::Openssl::PrivateKey::Default::Decrypter::new
# File lib/izokatu/openssl/private_key/auth/decrypter.rb, line 29 def initialize(auth_data:, auth_tag:, cipher:, encrypted_data:, key:, nonce:) @auth_data = auth_data @auth_tag = auth_tag super(cipher: cipher, encrypted_data: encrypted_data, key: key, nonce: nonce) end
Public Instance Methods
perform()
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Initializing decrypter
@return [OpenSSL::Cipher] decrypter instance
@since 0.1.0
Calls superclass method
Izokatu::Decrypter#perform
# File lib/izokatu/openssl/private_key/auth/decrypter.rb, line 41 def perform verify_tag_size! super end
Private Instance Methods
initialize_auth_decrypter_params!()
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Initializing decrypter auth params
@since 0.1.0
# File lib/izokatu/openssl/private_key/auth/decrypter.rb, line 61 def initialize_auth_decrypter_params! # unless added just for ARIA-***-CCM ciphers decrypter.auth_data = auth_data unless cipher.include?('ARIA') decrypter.auth_tag = auth_tag end
initialize_decrypter_params!()
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Initializing decrypter params
@since 0.1.0
Calls superclass method
Izokatu::Openssl::PrivateKey::Default::Decrypter#initialize_decrypter_params!
# File lib/izokatu/openssl/private_key/auth/decrypter.rb, line 52 def initialize_decrypter_params! super initialize_auth_decrypter_params! end
verify_tag_size!()
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Raising exception if auth tag is truncated
@raise RuntimeError
@since 0.1.0
# File lib/izokatu/openssl/private_key/auth/decrypter.rb, line 72 def verify_tag_size! raise 'tag is truncated!' unless auth_tag.bytesize == DEFAULT_AUTH_TAG_LENGTH end