signer

中文版本

signer

A high-performance Go(golang) signature algorithm package. Used to sign HTTP requests.

X509 RSA Signature Server

This is a signature server using RSA private key and x509 certifacate

How to use ?

• BEFORE ALL : Initialize S3 Options

    signer.InitS3Options(APIKEY, APUSECRET, REGION)

• Step 1 : Parse your root private key and certificate

    root, err := Parsex509RSACert(**root certificate bytes (asn1)**, **root private key bytes (asn1)**)

• Step 2 : Create a store instance as private key storage ** The Store Should Be Singleton, IT'S THREAD SAFE **

factory := NewRSAStoreFactory(** Tag (eg. dev) **, ** AWS S3 Bucket **, **Root cert from Step 1**, **x509 Subject (*signer.x509Subject)**)
store, err := factory.Create(x509RSAStore_OneToMany) //x509RSAStore_OneToMany: One private key to many client certificate 

• Step 3 : Create RSA Server and Client

server := Newx509RSAServer(**RSA Store from Step 2**)
client, err := server.CreateClient(**Client Identity SHOULD BE UNIQUEU**)

• Step 4 : Sign

signature, key, err := client.Sign([]byte("testing"))
//signature: the bytes value client should use x509 certificate to verfy
//key: key of x509 certificate uploaded to AWS S3 Service

• new Sign string array data as default encoding signature, key, err := client.ASN1Sign("Type Lable","section1","section2","section3","section4") //Arguments[0]: separator //Arguments[...]: strings need sign later, client will encode them to default(utf8) encoding.

• new Sign string array data as ASN.1 encoding

signature, key, err := client.StringsSign("\r\n","section1","section2","section3","section4")
//Arguments[0]: Type of ASN.1 Declaration, eg. 'SAMPLE MESSAGE'
//Arguments[...]: strings need sign later, client will encode them to ASN.1 encoding. 

How to verfy ?

We are using openssl signature, almost supported by any program launguage.

• Here is the parameters you may need :

• Root RSA Keysize : 2048

• Root RSA Key Encoding : ASN.1

• Root Certificate Format : x.509

• Root Certificate Encoding : ASN.1

• RSA Keysize : 2048

• RSA Key Encoding : ASN.1

• Client Certificate Format : x.509

• Client Certificate Encoding : ASN.1

• Here is the parameters of ASN1Sign :

• Separator: \r\n

• ASN.1 Declaration Type Auto Turn Upper : enabled

• Single line max length : 64 letters

How to get root certificates ?

• Run in bash

openssl genrsa -out rsakey.pem 2048 && \
openssl rsa -in rsakey.pem -pubout -out rsakey.pub && \
openssl req -x509 -new -days 365 -key rsakey.pem -out rootcert.crt