CkPython

Load a JWE from a String

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.LoadJwe, which loads a JWE from its compact serialization string so it can be decrypted.

Background. JWE (JSON Web Encryption) protects content with a content-encryption algorithm (the header enc value) while the content-encryption key is managed by the key-management algorithm (the header alg value). This example uses AES key wrapping with a symmetric wrapping key.

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import sys
import chilkat

success = False

jwe = chilkat.CkJwe()

#  Load a JWE from its compact serialization string.
jweCompact = "eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>"
success = jwe.LoadJwe(jweCompact)
if (success == False):
    print(jwe.lastErrorText())
    sys.exit()

#  The 256-bit key-wrapping key (base64) for recipient index 0.  In production, obtain the key
#  from a secure source rather than hard-coding it.
base64Key = "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU="
success = jwe.SetWrappingKey(0,base64Key,"base64")
if (success == False):
    print(jwe.lastErrorText())
    sys.exit()

#  The loaded JWE can now be decrypted.
content = jwe.decrypt(0,"utf-8")
if (jwe.get_LastMethodSuccess() == False):
    print(jwe.lastErrorText())
    sys.exit()

print(content)