Use OpenSSL to generate RSA keys

Install OpenSSL

Linux（Ubuntu）

sudo apt-get install openssl

Windows

Donwload from Official website Downloads

macOS

brew reinstall openssl

Generation of RSA key pair

Linux / macOS

openssl genrsa -out pay_rsa_private_key.pem 1024
openssl pkcs8 -topk8 -inform PEM -in pay_rsa_private_key.pem  -outform PEM -nocrypt
openssl rsa -in pay_rsa_private_key.pem -pubout -out  pay_rsa_public_key.pem

Windows in CMD

C:\OpenSSL-Win32\bin>openssl.exe
OpenSSL> genrsa -out pay_rsa_private_key.pem 1024
OpenSSL> pkcs8 -topk8 -inform PEM -in pay_rsa_private_key.pem  -outform PEM -nocrypt
OpenSSL> rsa -in pay_rsa_private_key.pem -pubout -out  pay_rsa_public_key.pem
OpenSSL> exit

Method

The RSA key pair generation will result in two files: pay_rsa_private_key.pem (private key) and pay_rsa_public_key.pem (public key) in the current directory. The former is to be kept secure by the merchant for signing critical interfaces, while the latter's uncommented content should be uploaded via the interface. EchoooPay's backend portal will then verify the interface using the provided public key.

PKCS8 Formatted Annotated Private Key File

-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----

Public Key

-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDWm7/UV5l23A9akyNM06oUX7Hn
umKOzp31wiNDTXnlCTAKs9LcLutLkyPzwye9BQO/rWfvQCWYb+vXToHTt2k8GCVa
FmHJnL49y6uMNymS+HWvVvM8ms2ByWZ9ISLP6WxDcwU/CYK51YMsDLhMNTDAYkkq
vx6UsO35Vpa/R65vSwIDAQAB
-----END PUBLIC KEY-----

Information for the Uploaded Public Key File

MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDWm7/UV5l23A9akyNM06oUX7Hn
umKOzp31wiNDTXnlCTAKs9LcLutLkyPzwye9BQO/rWfvQCWYb+vXToHTt2k8GCVa
FmHJnL49y6uMNymS+HWvVvM8ms2ByWZ9ISLP6WxDcwU/CYK51YMsDLhMNTDAYkkq
vx6UsO35Vpa/R65vSwIDAQAB