eldo_user

Eldo Netlist Setup
encrypt_eldo Tool
encrypt_eldo Tool
Use the encrypt_eldo tool to encrypt the libraries containing .SUBCKT definitions, .MODEL/
.PARAM cards, .PROTECT/.UNPROTECT blocks, and Verilog-A source files. It uses DES
encryption with an internal 56-bit key. The file will be automatically decrypted by Eldo at run
time, but no encrypted information is displayed in any output files generated by Eldo, such as
the ASCII output file (.chi). This guarantees the confidentiality of the data.
Usage
encrypt_eldo -i input_file [-o output_file] [-semi] [-nosemi]
[-compat|-veriloga] [-v]
Arguments
• -i input_file
Input filename. The file can contain model cards, parameter cards, subcircuit definitions,
and protected blocks for encryption.
• -o output_file
Output filename. If this is not specified, the filename will be input_file.crypt.
• -semi
Enables semi-transparency for encrypted blocks generated from subcircuit definitions and
.PROTECT/.UNPROTECT blocks. See “Semi-Transparent Encryption” on page 147.
• -nosemi
Disables semi-transparency for encrypted blocks, discarding any user annotation.
Equivalent to removing all .SEMITRANSPARENT commands from the input file before
encryption. See “Semi-Transparent Encryption” on page 147.
• -compat
Simulator compatibility argument, to encrypt HSPICE source files. When specified only
.PROTECT/.UNPROTECT blocks will be encrypted.
• -veriloga
Encrypt Verilog-A source files.
• -v
Returns the software version number. No encryption is performed.
Description
Notes for Verilog-A Usage
• When running the simulation multiple times, Eldo will not decrypt and recompile the
Verilog-A file each time if the file or the launching parameters are unchanged.
• .PROTECT/.UNPROTECT blocks have no effect with the -veriloga argument.
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Eldo® User's Manual, 15.3