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.

Dim success As Boolean
success = False

Dim jwe As New Chilkat.Jwe

//  Load the JWE compact serialization to be decrypted.
Dim jweCompact As String
jweCompact = "eyJhbGciOiJBMjU2S1ciLCJlbmMiOiJBMjU2R0NNIn0.<...>.<iv>.<ciphertext>.<tag>"
success = jwe.LoadJwe(jweCompact)
If (success = False) Then
    System.DebugLog(jwe.LastErrorText)
    Return
End If

//  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.
Dim base64Key As String
base64Key = "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXowMTIzNDU="
success = jwe.SetWrappingKey(0,base64Key,"base64")
If (success = False) Then
    System.DebugLog(jwe.LastErrorText)
    Return
End If

//  Decrypt recipient index 0, writing the plaintext into a StringBuilder.
Dim sbContent As New Chilkat.StringBuilder
success = jwe.DecryptSb(0,"utf-8",sbContent)
If (success = False) Then
    System.DebugLog(jwe.LastErrorText)
    Return
End If

System.DebugLog(sbContent.GetAsString())