Chilkat Examples

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Tcl Examples

ASN.1
Amazon S3
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Amazon SES
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Azure Cloud Storage
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Java KeyStore (JKS)
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Twitter
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curl
eBay

 

 

 

(Tcl) Base64url Encoding

Base64url encoding is identical to base64 encoding except it uses non-reserved URL characters (e.g. '–' is used instead of '+', and '_' is used instead of '/') and it omits the padding characters. Chilkat adds support for "base64url" in version 9.5.0.56. (To be released Q1 2016.) The list of binary encodings supported by Chilkat are documented at Chilkat Binary Encodings For any supported encoding, such as base64, hex, url, quoted-printable, modbase64, base64url, etc., the encoding name may be used in any "EncodingMode" property or in any method argument that specifies a binary encoding. (Please note that a "binary encoding" is different than a "character encoding". Character encodings supported by Chilkat are listed at Chilkat Character Encodings.) This example demonstrates using base64url encoding by setting the RSA object's EncodingMode property equal to "base64url".

Chilkat Tcl Extension Downloads

Chilkat Tcl Extension Downloads

load ./chilkat.dll

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# Create an instance of a certificate store object, load a PFX file,
# locate the certificate we need, and use it for signing.
# (a PFX file may contain more than one certificate.)
set certStore [new_CkCertStore]

# The 1st argument is the filename, the 2nd arg is the 
# PFX file's password:
set success [CkCertStore_LoadPfxFile $certStore "chilkat.pfx" "test"]
if {[expr $success != 1]} then {
    puts [CkCertStore_lastErrorText $certStore]
    delete_CkCertStore $certStore
    exit
}

# cert is a CkCert
set cert [CkCertStore_FindCertBySubject $certStore "Chilkat Software, Inc."]
if {[expr [CkCertStore_get_LastMethodSuccess $certStore] == 0]} then {
    puts [CkCertStore_lastErrorText $certStore]
    delete_CkCertStore $certStore
    exit
}

# pkey is a CkPrivateKey

set pkey [CkCert_ExportPrivateKey $cert]
if {[expr [CkCert_get_LastMethodSuccess $cert] == 0]} then {
    puts [CkCert_lastErrorText $cert]
    delete_CkCert $cert

    delete_CkCertStore $certStore
    exit
}

delete_CkCert $cert

# Get the private key in XML format:
set pkeyXml [CkPrivateKey_getXml $pkey]

set rsa [new_CkRsa]

# Import the private key into the RSA component:
set success [CkRsa_ImportPrivateKey $rsa $pkeyXml]
if {[expr $success != 1]} then {
    puts [CkRsa_lastErrorText $rsa]
    delete_CkPrivateKey $pkey

    delete_CkCertStore $certStore
    delete_CkRsa $rsa
    exit
}

# This example will sign a string, and receive the signature
# as a base64url encoded string.  Therefore, set the encoding mode
# to "base64url":
CkRsa_put_EncodingMode $rsa "base64url"
CkRsa_put_LittleEndian $rsa 0

set strData "This is the string to be signed."
set strSig [CkRsa_signStringENC $rsa $strData "sha256"]

delete_CkPrivateKey $pkey

puts "$strSig"

delete_CkCertStore $certStore
delete_CkRsa $rsa

 

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