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Ethereum: PEM format for ECDSA
When working with cryptographic keys, including those for the Ethereum network, it is important to understand how you can safely format. An important aspect of key formatting is the use of public key encryption algorithms (PKE) such as digital signature algorithm (ECDSA).
In this article we will take a closer look at the PEM format and its application in ECDSA for Ethereum.
What is the PEM format?
The PEM format (very simple email) is a standard that is used on a large scale to encounter the couples of public-private keys. It is based on the ASCII sign set and uses a simple text -based syntax to present cryptographic keys.
ECDSA key formats
ECDSA keys are usually shown as a pair of bytes that can be encoded in PEM format using the following format:
`
----- Start the private key ECDSA -----
Miibijanbgkqhkkg9w0baqefafgtwjl6u4yzz/...
----- end the private key ECDSA ------
Here is a breakdown of each page:
- — The beginning shows the beginning of a block of public keys.
ECDSA is the name of the PKE algorithm used (in this case the digital signature algorithm with an elliptical curve).
- The "private key" encodes the private key in PEM format. With '' byties are preceded to indicate that they are part of an ECDSA signature.
- The next line is a control that confirms the integrity of the data.
Private key format
The private key is usually shown as a string that in PEM format with:
----- Start the private key ECDSA -----
Miibijanbgkqhkkg9w0baqefafgtwjl6u4yzz/...
This format contains the following elements:
- — The beginning shows the beginning of a block of public keys.
-ECDSA -" is the name of the PKE algorithm (in this case ECDSA).
- The "private key" encodes the private key in PEM format.
Public key format
The public key is usually as:
----- The public key begins ------
... ...
----- The completed public key -----
This format contains:
- — The beginning shows the beginning of a block of public keys.
Separate public and private keys.
- The next line is the public key itself, which in PEM format with:
... Public_Key_Here ...
Work with the PEM format in Python-Ecdsa **
When working with ECDSA for Ethereum, you need to import the "ECDSA" library and use their functions to work with private and public keys. Here is an example of a code fragment that shows how a private key is codified in PEM:
Python
Since the signing of the ECDSA import
By cryptography.hazmat.primative import erialization
Generate a new private key
Private_key = signing.signingkey.generate ()
Codified private chea in PEM format
pem_private_key = private_key.to_string (). Code ()
Print (PEM_Private_Key)
Charge the private key from a file (in PEM format)
Private_Key_from_file = serialization.load_pem_private_Key (
Pem_Private_Key,
Password = none ,,
Backend = 'secrets'
)))
Decor the private fee that was loaded in PEM format
Ladeed_Private_Key = private_Key_FROM_FILE.TO_STRING (). Decodes ()
Print (Laded_Private_Key)
This code fragment generates a new private key, codifies it in PEM format withto_string ()and prints the output. Then upload the private key from a file (in PEM format) underLoad_Pem_Private_Key ()` and decode the privately charged button to be displayed.
Diploma
In this article I examined the PEM format and its application in ECDSA for Ethereum. If you understand how private and public keys are encoded in PEM format, you can save and transmit cryptographic keys to your Ethereum projects. Remember to always use a safe authentication or authentication mechanism when working with private keys to prevent unauthorized access.