(Chilkat2-Python) Load ECC Private Key from JWK Format (JSON Web Key)

Demonstrates how to load an ECC private key from JWK (JSON Web Key) format.

Note: This example requires Chilkat v9.5.0.66 or later.

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS, Solaris

import sys
import chilkat2

# Note: This example requires Chilkat v9.5.0.66 or later.

# First build a JWK sample to load..
json = chilkat2.JsonObject()
json.UpdateString("kty","EC")
json.UpdateString("crv","P-256")
json.UpdateString("x","oBUyo8CQAFPeYPvv78ylh5MwFZjTCLQeb042TjiMJxE")
json.UpdateString("y","vvQyxZkUjJQUPU_0bCy3Pj5qQdfu8jwEfqEeYGZ95CU")
json.UpdateString("d","EbVzfPnZPxfAyxqEZV05laAoJAl-_6Xt2O4mOB611sM")

# The JSON contains the following:
# { 
#   "kty": "EC",
#   "crv": "P-256",
#   "x": "oBUyo8CQAFPeYPvv78ylh5MwFZjTCLQeb042TjiMJxE",
#   "y": "vvQyxZkUjJQUPU_0bCy3Pj5qQdfu8jwEfqEeYGZ95CU",
#   "d": "EbVzfPnZPxfAyxqEZV05laAoJAl-_6Xt2O4mOB611sM"
# }

# Note: The JSON can contain other members, such as "use", "kid", or anything else.  These will be ignored.
json.EmitCompact = False

# Show the JWK string to be loaded:
jwkStr = json.Emit()

privKey = chilkat2.PrivateKey()
success = privKey.LoadJwk(jwkStr)
if (success != True):
    print(privKey.LastErrorText)
    sys.exit()

# OK.. the JWK is loaded.  It can be used in whatever way desired...

# The key can be retrieved in any other format, such as XML or PEM..
print(privKey.GetXml())

# XML output:
# <ECCKeyValue curve="secp256r1">MHcCAQEEIBG1c3z52T8XwMsahGVdOZWgKCQJfv+l7djuJjgetdbDoAoGCCqGSM49AwEHoEQDQgAEoBUyo8CQAFPeYPvv78ylh5MwFZjTCLQeb042TjiMJxG+9DLFmRSMlBQ9T/RsLLc+PmpB1+7yPAR+oR5gZn3kJQ==</ECCKeyValue>

print(privKey.GetPkcs8EncryptedPem("secret"))

# PEM output
# 
# -----BEGIN ENCRYPTED PRIVATE KEY-----
# MIHFMEAGCSqGSIb3DQEFDTAzMBsGCSqGSIb3DQEFDDAOBAiku9rUjavLQQICCAAw
# FAYIKoZIhvcNAwcECGsl/5nLai+JBIGAVIqKAdfcRQNLl1t3x+n8OZ92d1H+qgjS
# Hs83wn2joJK4nlqy+rzosZxQ3e8NTJQyUEWZWcjqMj/N0phS3QWtcD/qbda5oEcv
# QgtU60cZ4ql3truefAmlZz2PdpOfqtYhxlvjJQxnyojn4ntj69OwLOt9SZbaBQQi
# KUL8KXT4Pq8=
# -----END ENCRYPTED PRIVATE KEY-----