Sample code for 30+ languages & platforms
Tcl

Convert Certificate from DER to PEM.

See more Certificates Examples

Loads a digital certificate from any format, such as DER, and saves to PEM format.

Chilkat Tcl Downloads

Tcl

load ./chilkat.dll

set success 0

set cert [new_CkCert]

# LoadFromFile will load virtually any certificate format file.
# It will auto-recognize the format and load appropiately.
# In this case, load a DER format certificate and convert to PEM.
set success [CkCert_LoadFromFile $cert "qa_data/certs/testCert.cer"]
if {$success != 1} then {
    puts [CkCert_lastErrorText $cert]
    delete_CkCert $cert
    exit
}

set success [CkCert_ExportCertPemFile $cert "qa_data/certs/testCert.pem"]
if {$success != 1} then {
    puts [CkCert_lastErrorText $cert]
    delete_CkCert $cert
    exit
}

puts "Converted certificate from DER to PEM format."

delete_CkCert $cert