Digest Public Key

Standard Verilog-2005 introduces a new feature to support a protected intellectual property (IP). This function allows that the IP providers offer models in encrypted form. Provider can encrypt entire files or encrypt only the parts of a model. Learn more about protected envelopes are supported in article 28 of the IEEE 1364-2005 VeriLogger extreme the protective function of Verilog-2005 envelopes. Traditionally, encrypted Verilog source files have the extension. VP. Before encrypt your source, test the unencrypted VeriLogger extreme-code of source, to ensure that no errors occur. Because the end user of your IP address access to the source code has, won't he able, all problems and be error messages in encrypted sections of code to solve anything. Create a way easier and more often from protected protected envelopes use located source codes encrypted using the public key of the VeriLogger extreme. Thus any user VeriLogger can compile extremes and use the encrypted template, by you the file just to their project. VeriLogger extreme compile and no access to the source code that is encrypted with the encrypted code to simulate, but the user. Create an encrypted file model, proceed as follows: add ' pragma protect the source policy to limit what sections to encrypt to. Anything between a pragma protect starting line and a ' protect pragma end is encrypted. Anything outside these guidelines is literally copied to the output file. Here is a source code file SRAM. V with the ' pragma directives added to protect the contents of the SRAM module. Then run the Simx using the + protect the command to encrypt the source file. SIMx + protect SRAM. V cela generates a file called SRAM. VP content such as the following code. Keep in mind that the code outside to protect is still readable pragma directives, but the code between the directives is now encrypted:. Pragma Key_keyowner = Key_method = RSA protect 'Tla700' protection 'Pragma protect Key_keyname = Syncad' pragma' pragma protect begin. Pragma protect Key_keyowner = My_key_owner' Key_keyname = My_key_name, Key_method = RSA protect pragma' pragma protect begin. Generate private key RSA 1024 bits in length a module. ++++++. +++ e is 65537 (0 x 10001). Data_method3des-cbc protect pragma' pragma Key_keyowner = 'Tla700' protection ' pragma protect Key_keyname = Syncad, Key_method = RSA, start. Support for the encoding and encryption (implementation details) MethodsVeriLogger supports extreme methods of encoding base64 encoded encrypted data. UUEncode-format is not supported. CiphersVeriLogger extreme supports the following symmetric encryption (a symmetric encryption algorithm using the same key for encryption and decryption, while an asymmetric encryption algorithm of two keys: one for encryption and one for decryption process used): des-cbc: data encryption standard in CBC mode 3des-cbc: triple in CBC mode aes128-cbc: advanced encryption standard with 128-bit key aes192-cbc: advanced encryption standard with 192-bit key aes256-cbc: Advanced encryption standard with 256-bit key Blowfish-cbc: Blowfish in CBC mode cast128-CBC: CAST-128 in CBC mode and digest public key the following asymmetric encryption algorithm: RSA: encryption/decryption RSA VeriLogger improves process reliability, VeriLogger crypt actually blocks of the source code with a symmetric encryption algorithm protected (which is stronger than the) RSA encryption for long blocks of text), and then encrypt the symmetric key with asymmetric RSA public key. When the internal decryption of a block protected compilation purposes VeriLogger initially for protected decrypt an RSA private key-code blocks with the corresponding symmetric key and then uses this symmetric key to decrypt their blockades of the source code. Therefore, if you are viewing an encrypted version of a protected block, you will see two separate encrypted sections, with the encrypted symmetric key of key block and a block of data containing the source code for symmetric encrypted. Unsupported DirectivesThe ' pragma directives related to message summaries are not supported. It is Digest_keyowner, Digest_key_method, Digest_keyname, Digest_public_key, Digest_decrypt_key, Digest_method and Digest_block. Advanced directives, the license that change the available encrypted function models are not supported. Include directives not supported: Decrypt_license (allows to create encrypted templates, whose source code by an end user, was accessed with the correct key), Runtime_license (who can create models, which can be compiled but not simulated) and the display window (debugging user can access protected code covers more advanced, as capacity or defines the values of the signals in the protected envelope). Currently a proposal, all or nothing encryption and the encrypted source code will not be visible to the end user. .