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- Asymmetric encryption of an envelope
EncryptAsymmetricEnveloped (Function) In french: CrypteAsymétriqueEnveloppé
 Warning
From version 28, EncryptAsymmetricEnvelopped is kept for backward compatibility. This function is replaced by EncryptAsymmetricEnveloped.
Performs an asymmetric encryption of an envelope.
// Encrypting a character string
//---------------------------------------
bufToEncrypt is Buffer = "Message to encrypt"
bufEncryptedMessage is Buffer
sPublicKeyFile is string = fExeDir() + "\PublicKey.pem"
sPublicKeyPassword is string = "xxx"
bufEncryptedMessage = EncryptAsymmetricEnveloped(bufToEncrypt, sPublicKeyFile, ...
sPublicKeyPassword)
// Decryption
// -------------
bufEncryptedMessage is Buffer
bufDecryptedMessage is Buffer
sPrivateKeyFile is string = fExeDir() + "\PrivateKey.pem"
sPrivateKeyPassword is string = "xxx"
bufDecryptedMessage = DecryptAsymmetricEnveloped(bufEncryptedMessage, sPrivateKeyFile, ...
sPrivateKeyPassword)
 New in version 28
bufToEncrypt is Buffer = "Message to encrypt"
bufEncryptedMessage is Buffer
bufPublicKey is Buffer
bufPrivateKey is Buffer
(bufPrivateKey, bufPublicKey) = EncryptGenerateRSAKey(1024)
// Encrypting a character string
//---------------------------------------
bufEncryptedMessage = EncryptAsymmetricEnveloped(bufToEncrypt, bufPublicKey)
// Decryption
// -------------
bufEncryptedMessage is Buffer
bufDecryptedMessage is Buffer
bufDecryptedMessage = DecryptAsymmetricEnveloped(bufEncryptedMessage, bufPrivateKey)
Syntax
<Result> = EncryptAsymmetricEnveloped(<Content to encrypt> , <Public key file> [, <Password>])
<Result>: Buffer All the information necessary for decryption (algorithms used, encrypted key, initialization vector and encrypted buffer). <Content to encrypt>: Buffer Buffer to encrypt. <Public key file>: Character string or Buffer - Name and path of the file corresponding to the public key that will be used to encrypt. pem, der and p12 key formats are supported.
New in version 28Buffer containing the public key that will be used for the encryption.
<Password>: Optional character string Key file password (if required). Remarks Asymmetric encryption of an envelope EncryptAsymmetricEnveloped generates a random encryption key that will be used to encrypt <Content to encrypt> with a symmetric algorithm. The key is encrypted with the public key of <Public key file>. <Result> contains a buffer that concatenates all the necessary information for the decryption (algorithms used, encrypted key, initialization buffer and encrypted buffer). Remarks: - The private key is encrypted using OAEP padding.
- The message is encrypted using AES 256 in CBC with PKCS padding.
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