(Chilkat2-Python) Get ECC Public Key in JWK Format (JSON Web Key)

Demonstrates how to get an ECC public key in 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.

# Load a PEM file into memory.
sbPem = chilkat2.StringBuilder()
success = sbPem.LoadFile("qa_data/pem/ecc_public.pem","utf-8")
if (success != True):
    print("Failed to load PEM file.")
    sys.exit()

# Load the PEM into a public key object.
pubKey = chilkat2.PublicKey()
success = pubKey.LoadFromString(sbPem.GetAsString())
if (success != True):
    print(pubKey.LastErrorText)
    sys.exit()

# Get the public key in JWK format:
jwk = pubKey.GetJwk()

# The GetJwk method will return the JWK in the most compact JSON format possible,
# as a single line with no extra whitespace.  To get a more human-readable JWK (for this example),
# load into a Chilkat JSON object and emit non-compact:

json = chilkat2.JsonObject()
json.Load(jwk)
json.EmitCompact = False
print("ECC Public Key in JWK format:")
print(json.Emit())

# Sample output:
# { 
#   "kty": "EC",
#   "crv": "P-256",
#   "x": "oBUyo8CQAFPeYPvv78ylh5MwFZjTCLQeb042TjiMJxE",
#   "y": "vvQyxZkUjJQUPU_0bCy3Pj5qQdfu8jwEfqEeYGZ95CU"
# }
# 
# Additional information can be added like this:
json.AppendString("use","enc")
json.AppendString("kid","123ABC")

# Now examine the JSON:
print(json.Emit())

# { 
#   "kty": "EC",
#   "crv": "P-256",
#   "x": "oBUyo8CQAFPeYPvv78ylh5MwFZjTCLQeb042TjiMJxE",
#   "y": "vvQyxZkUjJQUPU_0bCy3Pj5qQdfu8jwEfqEeYGZ95CU",
#   "use": "enc",
#   "kid": "123ABC"
# }