Decrypt a JWE into a StringBuilder

See more JSON Web Encryption (JWE) Examples

Demonstrates Jwe.DecryptSb, which decrypts a recipient of a loaded JWE and writes the plaintext into a StringBuilder.

require 'chilkat'

success = false

jwe = Chilkat::CkJwe.new()

#  Load the JWE compact serialization to be decrypted.
jweCompact = "eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>"
success = jwe.LoadJwe(jweCompact)
if (success == false)
    print jwe.lastErrorText() + "\n";
    exit
end

#  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() + "\n";
    exit
end

#  Decrypt recipient index 0, writing the plaintext into a StringBuilder.
sbContent = Chilkat::CkStringBuilder.new()
success = jwe.DecryptSb(0,"utf-8",sbContent)
if (success == false)
    print jwe.lastErrorText() + "\n";
    exit
end

print sbContent.getAsString() + "\n";