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(CkPython) Create JWS using the Flattened JSON Serialization FormatCreates a JSON Web Signature (JWS) containing 1 signature and output using the flattened JSON serialization format. Note: This example requires Chilkat v9.5.0.66 or greater.
import sys import chilkat # This requires the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. # Note: This example requires Chilkat v9.5.0.66 or greater. # The JWS to be created will contain one signature using an ECDSA key. sbEccJwk = chilkat.CkStringBuilder() sbEccJwk.Append("{\"kty\":\"EC\",") sbEccJwk.Append("\"crv\":\"P-256\",") sbEccJwk.Append("\"x\":\"f83OJ3D2xF1Bg8vub9tLe1gHMzV76e8Tus9uPHvRVEU\",") sbEccJwk.Append("\"y\":\"x_FEzRu9m36HLN_tue659LNpXW6pCyStikYjKIWI5a0\",") sbEccJwk.Append("\"d\":\"jpsQnnGQmL-YBIffH1136cspYG6-0iY7X1fCE9-E9LI\"") sbEccJwk.Append("}") eccKey = chilkat.CkPrivateKey() # Note: This example loads the ECDSA key from JWK format. Any format can be loaded # into the private key object. (See the online reference documentation..) success = eccKey.LoadJwk(sbEccJwk.getAsString()) if (success != True): print(eccKey.lastErrorText()) sys.exit() # --------------------------------------------------- # Prepare both a protected and unprotected header. jwsProtHdr = chilkat.CkJsonObject() jwsProtHdr.AppendString("alg","ES256") jwsUnprotHdr = chilkat.CkJsonObject() jwsUnprotHdr.AppendString("kid","myEcKey") # --------------------------------------------------- jws = chilkat.CkJws() jws.SetProtectedHeader(0,jwsProtHdr) jws.SetUnprotectedHeader(0,jwsUnprotHdr) jws.SetPrivateKey(0,eccKey) bIncludeBom = False payloadStr = "In our village, folks say God crumbles up the old moon into stars." jws.SetPayload(payloadStr,"utf-8",bIncludeBom) # --------------------------------------------------- # Create the JWS. # Indicate we prefer the non-compact, flattened serialization. jws.put_PreferCompact(False) jws.put_PreferFlattened(True) jwsStr = jws.createJws() if (jws.get_LastMethodSuccess() != True): print(jws.lastErrorText()) sys.exit() # The jwsStr is contains the flattened JSON in the smallest possible size, which is a single line. # To get in human-readable format, load into a Chilkat JSON object and emit.. json = chilkat.CkJsonObject() json.Load(jwsStr) json.put_EmitCompact(False) print(json.emit()) # Sample output: # { # "payload": "SW4gb3VyIHZpbGxhZ2UsIGZvbGtzIHNheSBHb2QgY3J1bWJsZXMgdXAgdGhlIG9sZCBtb29uIGludG8gc3RhcnMu", # "protected": "eyJhbGciOiJFUzI1NiJ9", # "header": { # "kid": "myEcKey" # }, # "signature": "b7V2UpDPytr-kMnM_YjiQ3E0J2ucOI9LYA7mt57vccrK1rb84j9areqgQcJwOA00aWGoz4hf6sMTBfobdcJEGg" # } |
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