optimus-go alternatives and similar packages
Based on the "Security" category.
Alternatively, view optimus-go alternatives based on common mentions on social networks and blogs.
-
Lean and Mean Docker containers
DockerSlim (docker-slim): Optimize and secure your Docker containers -
lego
Pure Go ACME client library and CLI tool (for use with Let's Encrypt) -
autocert
Auto provision Let's Encrypt certificates and start a TLS server. -
Cameradar
Tool and library to remotely hack RTSP streams from surveillance cameras. -
memguard
Secure software enclave for storage of sensitive information in memory. -
secure
HTTP middleware for Go that facilitates some quick security wins. -
Themis by Cossack Labs
Crypto library for storage and messaging for Swift, ObjC, Android, С++, JS, Python, Ruby, PHP, Go -
acra
Network encryption proxy to protect database-based applications from data leaks: strong selective encryption, SQL injections prevention, intrusion detection system. -
ToRat
ToRat is a Remote Administation tool written in Go using Tor as a transport mechanism and RPC for communication -
go-yara
Go Bindings for YARA, the "pattern matching swiss knife for malware researchers (and everyone else)" -
firewalld-rest
A rest application to dynamically update firewalld rules on a linux server. -
BadActor
An in-memory, application-driven jailer built in the spirit of fail2ban -
go-password-validator
Password validator based on raw cryptographic entropy values. -
simple-scrypt
an scrypt package with a simple, obvious API and automatic cost calibration built-in. -
argon2pw
Argon2 password hash generation with constant-time password comparison. -
goSecretBoxPassword
A probably paranoid package for securely hashing and encrypting passwords. -
Credman
A simple, powerful, cross-platform and military grade secure credential management. -
goArgonPass
Argon2 password hash and verification designed to be compatible with existing Python and PHP implementations. -
go-generate-password
Password generator that can be used on the cli or as a library. -
certificates
An opinionated tool for generating tls certificates. -
secureio
An keyexchanging+authenticating+encrypting wrapper and multiplexer for io.ReadWriteCloser based on XChaCha20-poly1305, ECDH and ED25519. -
argon2-hashing
light wrapper around Go's argon2 package that closely mirrors with Go's standard library Bcrypt and simple-scrypt package. -
sslmgr
SSL certificates made easy with a high level wrapper around acme/autocert. -
Go random string generator
Flexible and customizable random string generator
Scout APM - Leading-edge performance monitoring starting at $39/month
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README
ID Obfuscation/Hashing Transformer for Go

There are many times when you want to generate obfuscated ids. This package utilizes Knuth's Hashing Algorithm to transform your internal ids into another number to hide it from the general public.
An example may be your database table. You may have a primary key that points to a particular customer. For security reasons you don't want to expose that id to the outside world. That is exactly where this package becomes handy.
Optimus encodes your internal id to a number that is safe to expose. Finally it can decode that number back so you know which internal id it refers to.
⭐ the project to show your appreciation.
Installation
go get -u github.com/pjebs/optimus-go
Usage
Step 1
- Find or Calculate a PRIME number from somewhere. It must be smaller than
2147483647
(MAXID) - Calculate the Mod Inverse of the Prime number such that
(PRIME * INVERSE) & MAXID == 1
- Generate a Pure Random Integer less than
2147483647
(MAXID).
You can use the built-in generator.GenerateSeed()
function to generate all 3 required parameters if you want.
Step 2
package hello
import (
"fmt"
"github.com/pjebs/optimus-go"
)
o := optimus.New(1580030173, 59260789, 1163945558) // Prime Number: 1580030173, Mod Inverse: 59260789, Pure Random Number: 1163945558
new_id := o.Encode(15) // internal id of 15 being transformed to 1103647397
orig_id := o.Decode(1103647397) // Returns 15 back
Please note that in order for Optimus to transform the id back to the original, all 3 numbers of the constructor must be consistent. You will need to store it somewhere after generation and usage.
Methods
type Optimus struct {
prime uint64
modInverse uint64
random uint64
}
func New(prime uint64, modInverse uint64, random uint64) Optimus
New returns an Optimus struct that can be used to encode and decode integers.
A common use case is for obfuscating internal ids of database primary keys.
It is imperative that you keep a record of prime
, modInverse
and random
so that
you can decode an encoded integer correctly. random
must be an integer less than MAX_INT
.
WARNING: The function panics if prime is not a valid prime. It does a probability-based prime test using the MILLER-RABIN algorithm.
CAUTION: DO NOT DIVULGE prime, modInverse and random!
func NewCalculated(prime uint64, random uint64) Optimus
NewCalculated returns an Optimus struct that can be used to encode and decode integers.
random
must be an integer less than MAX_INT
.
It automatically calculates prime's mod inverse and then calls New.
func (o Optimus) Encode(n uint64) uint64
Encode is used to encode n using Knuth's hashing algorithm.
func (o Optimus) Decode(n uint64) uint64
Decode is used to decode n back to the original. It will only decode correctly if the Optimus struct is consistent with what was used to encode n.
func (o Optimus) Prime() uint64
Prime returns the associated prime.
CAUTION: DO NOT DIVULGE THIS NUMBER!
func (o Optimus) ModInverse() uint64
ModInverse returns the associated mod inverse.
CAUTION: DO NOT DIVULGE THIS NUMBER!
func (o Optimus) Random() uint64
Random returns the associated random integer.
CAUTION: DO NOT DIVULGE THIS NUMBER!
func ModInverse(n int64) uint64
ModInverse returns the modular inverse of a given prime number.
The modular inverse is defined such that (PRIME * MODULAR_INVERSE) & (MAX_INT_VALUE) = 1
.
See: http://en.wikipedia.org/wiki/Modular_multiplicative_inverse
NOTE: prime is assumed to be a valid prime. If prime is outside the bounds of an int64, then the function panics as it can not calculate the mod inverse.
func generator.GenerateSeed() (Optimus, error)
GenerateSeed will generate a valid optimus object which can be used for encoding and decoding values.
See http://godoc.org/github.com/pjebs/optimus-go/generator#GenerateSeed for details on how to use it.
Alternatives
There is the hashids package which is very popular. Out of the box, it produces obfuscated ids that can contain any number of characters.
However:
- Knuth's algorithm is 127 times faster in benchmarks
- Hashids produce strings that contain characters other than just numbers.
- If you were to modify the code (since the default minimum alphabet size is 16 characters) to allow only characters (0-9), it removes the first and last numbers to use as separators.
- If the character '0' by coincidence comes out at the front of the obfuscated id, then you can't convert it to an integer when you store it. An integer will remove the leading zero but you need it to decode the number back to the original id (since hashid deals with strings and not numbers).
Inspiration
This package is based on the PHP library by jenssegers.
Other useful packages
- dataframe-go - Statistics and data manipulation
- dbq - Zero boilerplate database operations for Go
- electron-alert - SweetAlert2 for Electron Applications
- igo - A Go transpiler with cool new syntax such as fordefer (defer for for-loops)
- mysql-go - Properly cancel slow MySQL queries
- react - Build front end applications using Go
- remember-go - Cache slow database queries
Final Notes
Feel free to fork and/or provide pull requests. Any bug reports will be warmly received.
© 2014-20 PJ Engineering and Business Solutions Pty. Ltd.