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(Lianja) Duplicate openssl dgst -md5 -sign myKey.pem something.txt | openssl enc -base64 -A

Demonstrates how to duplicate the creation of an RSA signature produced by this OpenSSL command:

openssl dgst -md5 -sign myKey.pem something.txt | openssl enc -base64 -A

Chilkat Lianja Extension Download

Chilkat Lianja Extension

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

loPkey = createobject("CkPrivateKey")

// Load the private key from an RSA PEM file:
llSuccess = loPkey.LoadPemFile("myKey.pem")

// Get the private key in XML format:
lcPkeyXml = loPkey.GetXml()

loRsa = createobject("CkRsa")

// Import the private key into the RSA component:
llSuccess = loRsa.ImportPrivateKey(lcPkeyXml)
if (llSuccess <> .T.) then
    ? loRsa.LastErrorText
    release loPkey
    release loRsa
    return
endif

// OpenSSL uses BigEndian byte ordering:
loRsa.LittleEndian = .F.

// The resulting signature will be a Base64 string:
loRsa.EncodingMode = "base64"

// For simplicity, we're not loading
// the data to be signed from a file.  We are instead simply
// using a literal string value.  
lcStrData = "This is the text to be signed."

// Hash the input using MD5, and then sign the hash:
// Other valid hash algorithm choices are "md2" and "sha-1".
lcBase64Sig = loRsa.SignStringENC(lcStrData,"md5")

? lcBase64Sig

? "Success!"


release loPkey
release loRsa

 

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